Moved from ../Scenery
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curt
parent
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9 changed files with 2232 additions and 0 deletions
9
Objects/Makefile.am
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9
Objects/Makefile.am
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noinst_LIBRARIES = libObjects.a
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libObjects_a_SOURCES = \
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fragment.cxx fragment.hxx \
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material.cxx material.hxx \
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obj.cxx obj.hxx \
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texload.c texload.h
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INCLUDES += -I$(top_builddir) -I$(top_builddir)/Lib -I$(top_builddir)/Simulator
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412
Objects/fragment.cxx
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Objects/fragment.cxx
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// fragment.cxx -- routines to handle "atomic" display objects
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//
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// Written by Curtis Olson, started August 1998.
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//
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// Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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// (Log is kept at end of this file)
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#include <Include/fg_constants.h>
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#include <Include/fg_types.h>
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#include <Math/mat3.h>
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#include <Scenery/tile.hxx>
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#include "fragment.hxx"
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// return the sign of a value
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#define FG_SIGN( x ) ((x) < 0 ? -1 : 1)
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// return min or max of two values
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#define FG_MIN(A,B) ((A) < (B) ? (A) : (B))
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#define FG_MAX(A,B) ((A) > (B) ? (A) : (B))
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fgFACE :: fgFACE () :
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n1(0), n2(0), n3(0)
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{
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}
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fgFACE :: ~fgFACE()
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{
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}
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fgFACE :: fgFACE( const fgFACE & image ) :
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n1( image.n1), n2( image.n2), n3( image.n3)
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{
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}
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bool fgFACE :: operator < (const fgFACE & rhs )
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{
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return ( n1 < rhs.n1 ? true : false);
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}
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bool fgFACE :: operator == (const fgFACE & rhs )
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{
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return ((n1 == rhs.n1) && (n2 == rhs.n2) && ( n3 == rhs.n3));
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}
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// Constructor
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fgFRAGMENT::fgFRAGMENT ( void ) {
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}
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// Copy constructor
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fgFRAGMENT :: fgFRAGMENT ( const fgFRAGMENT & rhs ) :
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center ( rhs.center ),
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bounding_radius( rhs.bounding_radius ),
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material_ptr ( rhs.material_ptr ),
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tile_ptr ( rhs.tile_ptr ),
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display_list ( rhs.display_list ),
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faces ( rhs.faces ),
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num_faces ( rhs.num_faces )
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{
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}
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fgFRAGMENT & fgFRAGMENT :: operator = ( const fgFRAGMENT & rhs )
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{
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if(!(this == &rhs )) {
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center = rhs.center;
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bounding_radius = rhs.bounding_radius;
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material_ptr = rhs.material_ptr;
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tile_ptr = rhs.tile_ptr;
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// display_list = rhs.display_list;
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faces = rhs.faces;
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}
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return *this;
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}
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// Add a face to the face list
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void fgFRAGMENT::add_face(int n1, int n2, int n3) {
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fgFACE face;
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face.n1 = n1;
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face.n2 = n2;
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face.n3 = n3;
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faces.push_back(face);
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num_faces++;
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}
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// return the minimum of the three values
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static double fg_min3 (double a, double b, double c)
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{
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return (a > b ? FG_MIN (b, c) : FG_MIN (a, c));
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}
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// return the maximum of the three values
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static double fg_max3 (double a, double b, double c)
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{
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return (a < b ? FG_MAX (b, c) : FG_MAX (a, c));
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}
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// test if line intesects with this fragment. p0 and p1 are the two
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// line end points of the line. If side_flag is true, check to see
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// that end points are on opposite sides of face. Returns 1 if it
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// intersection found, 0 otherwise. If it intesects, result is the
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// point of intersection
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int fgFRAGMENT::intersect( fgPoint3d *end0, fgPoint3d *end1, int side_flag,
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fgPoint3d *result)
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{
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fgTILE *t;
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fgFACE face;
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MAT3vec v1, v2, n, center;
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double p1[3], p2[3], p3[3];
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double x, y, z; // temporary holding spot for result
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double a, b, c, d;
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double x0, y0, z0, x1, y1, z1, a1, b1, c1;
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double t1, t2, t3;
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double xmin, xmax, ymin, ymax, zmin, zmax;
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double dx, dy, dz, min_dim, x2, y2, x3, y3, rx, ry;
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int side1, side2;
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list < fgFACE > :: iterator current;
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list < fgFACE > :: iterator last;
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// find the associated tile
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t = tile_ptr;
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// printf("Intersecting\n");
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// traverse the face list for this fragment
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current = faces.begin();
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last = faces.end();
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while ( current != last ) {
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face = *current;
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current++;
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// printf(".");
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// get face vertex coordinates
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center[0] = t->center.x;
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center[1] = t->center.y;
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center[2] = t->center.z;
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MAT3_ADD_VEC(p1, t->nodes[face.n1], center);
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MAT3_ADD_VEC(p2, t->nodes[face.n2], center);
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MAT3_ADD_VEC(p3, t->nodes[face.n3], center);
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// printf("point 1 = %.2f %.2f %.2f\n", p1[0], p1[1], p1[2]);
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// printf("point 2 = %.2f %.2f %.2f\n", p2[0], p2[1], p2[2]);
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// printf("point 3 = %.2f %.2f %.2f\n", p3[0], p3[1], p3[2]);
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// calculate two edge vectors, and the face normal
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MAT3_SUB_VEC(v1, p2, p1);
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MAT3_SUB_VEC(v2, p3, p1);
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MAT3cross_product(n, v1, v2);
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// calculate the plane coefficients for the plane defined by
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// this face. If n is the normal vector, n = (a, b, c) and p1
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// is a point on the plane, p1 = (x0, y0, z0), then the
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// equation of the line is a(x-x0) + b(y-y0) + c(z-z0) = 0
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a = n[0];
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b = n[1];
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c = n[2];
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d = a * p1[0] + b * p1[1] + c * p1[2];
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// printf("a, b, c, d = %.2f %.2f %.2f %.2f\n", a, b, c, d);
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// printf("p1(d) = %.2f\n", a * p1[0] + b * p1[1] + c * p1[2]);
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// printf("p2(d) = %.2f\n", a * p2[0] + b * p2[1] + c * p2[2]);
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// printf("p3(d) = %.2f\n", a * p3[0] + b * p3[1] + c * p3[2]);
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// calculate the line coefficients for the specified line
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x0 = end0->x; x1 = end1->x;
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y0 = end0->y; y1 = end1->y;
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z0 = end0->z; z1 = end1->z;
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if ( fabs(x1 - x0) > FG_EPSILON ) {
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a1 = 1.0 / (x1 - x0);
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} else {
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// we got a big divide by zero problem here
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a1 = 0.0;
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}
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b1 = y1 - y0;
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c1 = z1 - z0;
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// intersect the specified line with this plane
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t1 = b * b1 * a1;
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t2 = c * c1 * a1;
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// printf("a = %.2f t1 = %.2f t2 = %.2f\n", a, t1, t2);
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if ( fabs(a + t1 + t2) > FG_EPSILON ) {
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x = (t1*x0 - b*y0 + t2*x0 - c*z0 + d) / (a + t1 + t2);
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t3 = a1 * (x - x0);
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y = b1 * t3 + y0;
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z = c1 * t3 + z0;
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// printf("result(d) = %.2f\n", a * x + b * y + c * z);
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} else {
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// no intersection point
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continue;
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}
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if ( side_flag ) {
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// check to see if end0 and end1 are on opposite sides of
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// plane
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if ( (x - x0) > FG_EPSILON ) {
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t1 = x;
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t2 = x0;
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t3 = x1;
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} else if ( (y - y0) > FG_EPSILON ) {
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t1 = y;
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t2 = y0;
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t3 = y1;
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} else if ( (z - z0) > FG_EPSILON ) {
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t1 = z;
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t2 = z0;
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t3 = z1;
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} else {
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// everything is too close together to tell the difference
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// so the current intersection point should work as good
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// as any
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result->x = x;
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result->y = y;
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result->z = z;
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return(1);
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}
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side1 = FG_SIGN (t1 - t2);
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side2 = FG_SIGN (t1 - t3);
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if ( side1 == side2 ) {
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// same side, punt
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continue;
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}
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}
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// check to see if intersection point is in the bounding
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// cube of the face
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#ifdef XTRA_DEBUG_STUFF
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xmin = fg_min3 (p1[0], p2[0], p3[0]);
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xmax = fg_max3 (p1[0], p2[0], p3[0]);
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ymin = fg_min3 (p1[1], p2[1], p3[1]);
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ymax = fg_max3 (p1[1], p2[1], p3[1]);
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zmin = fg_min3 (p1[2], p2[2], p3[2]);
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zmax = fg_max3 (p1[2], p2[2], p3[2]);
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printf("bounding cube = %.2f,%.2f,%.2f %.2f,%.2f,%.2f\n",
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xmin, ymin, zmin, xmax, ymax, zmax);
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#endif
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// punt if outside bouding cube
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if ( x < (xmin = fg_min3 (p1[0], p2[0], p3[0])) ) {
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continue;
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} else if ( x > (xmax = fg_max3 (p1[0], p2[0], p3[0])) ) {
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continue;
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} else if ( y < (ymin = fg_min3 (p1[1], p2[1], p3[1])) ) {
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continue;
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} else if ( y > (ymax = fg_max3 (p1[1], p2[1], p3[1])) ) {
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continue;
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} else if ( z < (zmin = fg_min3 (p1[2], p2[2], p3[2])) ) {
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continue;
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} else if ( z > (zmax = fg_max3 (p1[2], p2[2], p3[2])) ) {
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continue;
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}
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// (finally) check to see if the intersection point is
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// actually inside this face
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//first, drop the smallest dimension so we only have to work
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//in 2d.
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dx = xmax - xmin;
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dy = ymax - ymin;
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dz = zmax - zmin;
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min_dim = fg_min3 (dx, dy, dz);
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if ( fabs(min_dim - dx) <= FG_EPSILON ) {
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// x is the smallest dimension
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x1 = p1[1];
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y1 = p1[2];
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x2 = p2[1];
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y2 = p2[2];
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x3 = p3[1];
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y3 = p3[2];
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rx = y;
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ry = z;
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} else if ( fabs(min_dim - dy) <= FG_EPSILON ) {
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// y is the smallest dimension
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x1 = p1[0];
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y1 = p1[2];
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x2 = p2[0];
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y2 = p2[2];
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x3 = p3[0];
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y3 = p3[2];
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rx = x;
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ry = z;
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} else if ( fabs(min_dim - dz) <= FG_EPSILON ) {
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// z is the smallest dimension
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x1 = p1[0];
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y1 = p1[1];
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x2 = p2[0];
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y2 = p2[1];
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x3 = p3[0];
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y3 = p3[1];
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rx = x;
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ry = y;
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} else {
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// all dimensions are really small so lets call it close
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// enough and return a successful match
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result->x = x;
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result->y = y;
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result->z = z;
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return(1);
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}
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// check if intersection point is on the same side of p1 <-> p2 as p3
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t1 = (y1 - y2) / (x1 - x2);
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side1 = FG_SIGN (t1 * ((x3) - x2) + y2 - (y3));
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side2 = FG_SIGN (t1 * ((rx) - x2) + y2 - (ry));
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if ( side1 != side2 ) {
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// printf("failed side 1 check\n");
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continue;
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}
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// check if intersection point is on correct side of p2 <-> p3 as p1
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t1 = (y2 - y3) / (x2 - x3);
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side1 = FG_SIGN (t1 * ((x1) - x3) + y3 - (y1));
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side2 = FG_SIGN (t1 * ((rx) - x3) + y3 - (ry));
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if ( side1 != side2 ) {
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// printf("failed side 2 check\n");
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continue;
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}
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// check if intersection point is on correct side of p1 <-> p3 as p2
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||||||
|
t1 = (y1 - y3) / (x1 - x3);
|
||||||
|
side1 = FG_SIGN (t1 * ((x2) - x3) + y3 - (y2));
|
||||||
|
side2 = FG_SIGN (t1 * ((rx) - x3) + y3 - (ry));
|
||||||
|
if ( side1 != side2 ) {
|
||||||
|
// printf("failed side 3 check\n");
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
// printf( "intersection point = %.2f %.2f %.2f\n", x, y, z);
|
||||||
|
result->x = x;
|
||||||
|
result->y = y;
|
||||||
|
result->z = z;
|
||||||
|
return(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
// printf("\n");
|
||||||
|
|
||||||
|
return(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Destructor
|
||||||
|
fgFRAGMENT::~fgFRAGMENT ( void ) {
|
||||||
|
// Step through the face list deleting the items until the list is
|
||||||
|
// empty
|
||||||
|
|
||||||
|
// printf("destructing a fragment with %d faces\n", faces.size());
|
||||||
|
|
||||||
|
while ( faces.size() ) {
|
||||||
|
// printf("emptying face list\n");
|
||||||
|
faces.pop_front();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// equality operator
|
||||||
|
bool fgFRAGMENT :: operator == ( const fgFRAGMENT & rhs)
|
||||||
|
{
|
||||||
|
if(( center.x - rhs.center.x ) < FG_EPSILON) {
|
||||||
|
if(( center.y - rhs.center.y) < FG_EPSILON) {
|
||||||
|
if(( center.z - rhs.center.z) < FG_EPSILON) {
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
// comparison operator
|
||||||
|
bool fgFRAGMENT :: operator < ( const fgFRAGMENT &rhs)
|
||||||
|
{
|
||||||
|
// This is completely arbitrary. It satisfies RW's STL implementation
|
||||||
|
|
||||||
|
return bounding_radius < rhs.bounding_radius;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// $Log$
|
||||||
|
// Revision 1.1 1998/08/25 16:51:23 curt
|
||||||
|
// Moved from ../Scenery
|
||||||
|
//
|
||||||
|
//
|
||||||
|
|
||||||
146
Objects/fragment.hxx
Normal file
146
Objects/fragment.hxx
Normal file
|
|
@ -0,0 +1,146 @@
|
||||||
|
// fragment.hxx -- routines to handle "atomic" display objects
|
||||||
|
//
|
||||||
|
// Written by Curtis Olson, started August 1998.
|
||||||
|
//
|
||||||
|
// Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
|
||||||
|
//
|
||||||
|
// This program is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU General Public License as
|
||||||
|
// published by the Free Software Foundation; either version 2 of the
|
||||||
|
// License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This program is distributed in the hope that it will be useful, but
|
||||||
|
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU General Public License
|
||||||
|
// along with this program; if not, write to the Free Software
|
||||||
|
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||||
|
//
|
||||||
|
// $Id$
|
||||||
|
// (Log is kept at end of this file)
|
||||||
|
|
||||||
|
|
||||||
|
#ifndef _FRAGMENT_HXX
|
||||||
|
#define _FRAGMENT_HXX
|
||||||
|
|
||||||
|
|
||||||
|
#ifndef __cplusplus
|
||||||
|
# error This library requires C++
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
# include <config.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_WINDOWS_H
|
||||||
|
# include <windows.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <GL/glut.h>
|
||||||
|
#include <XGL/xgl.h>
|
||||||
|
|
||||||
|
#if defined ( __sun__ )
|
||||||
|
extern "C" void *memmove(void *, const void *, size_t);
|
||||||
|
extern "C" void *memset(void *, int, size_t);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <list> // STL list
|
||||||
|
|
||||||
|
#include <Bucket/bucketutils.h>
|
||||||
|
#include <Include/fg_types.h>
|
||||||
|
#include <Math/mat3.h>
|
||||||
|
|
||||||
|
#ifdef NEEDNAMESPACESTD
|
||||||
|
using namespace std;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
// Maximum nodes per tile
|
||||||
|
#define MAX_NODES 2000
|
||||||
|
|
||||||
|
|
||||||
|
// Forward declarations
|
||||||
|
class fgTILE;
|
||||||
|
class fgMATERIAL;
|
||||||
|
|
||||||
|
|
||||||
|
class fgFACE {
|
||||||
|
public:
|
||||||
|
int n1, n2, n3;
|
||||||
|
|
||||||
|
fgFACE();
|
||||||
|
~fgFACE();
|
||||||
|
fgFACE( const fgFACE & image );
|
||||||
|
bool operator < ( const fgFACE & rhs );
|
||||||
|
bool operator == ( const fgFACE & rhs );
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
// Object fragment data class
|
||||||
|
class fgFRAGMENT {
|
||||||
|
|
||||||
|
public:
|
||||||
|
// culling data for this object fragment (fine grain culling)
|
||||||
|
fgPoint3d center;
|
||||||
|
double bounding_radius;
|
||||||
|
|
||||||
|
// variable offset data for this object fragment for this frame
|
||||||
|
// fgCartesianPoint3d tile_offset;
|
||||||
|
|
||||||
|
// saved transformation matrix for this fragment (used by renderer)
|
||||||
|
// GLfloat matrix[16];
|
||||||
|
|
||||||
|
// tile_ptr & material_ptr are set so that when we traverse the
|
||||||
|
// list of fragments we can quickly reference back the tile or
|
||||||
|
// material property this fragment is assigned to.
|
||||||
|
|
||||||
|
// material property pointer
|
||||||
|
fgMATERIAL *material_ptr;
|
||||||
|
|
||||||
|
// tile pointer
|
||||||
|
fgTILE *tile_ptr;
|
||||||
|
|
||||||
|
// OpenGL display list for fragment data
|
||||||
|
GLint display_list;
|
||||||
|
|
||||||
|
// face list (this indexes into the master tile vertex list)
|
||||||
|
list < fgFACE > faces;
|
||||||
|
|
||||||
|
// number of faces in this fragment
|
||||||
|
int num_faces;
|
||||||
|
|
||||||
|
// Add a face to the face list
|
||||||
|
void add_face(int n1, int n2, int n3);
|
||||||
|
|
||||||
|
// test if line intesects with this fragment. p0 and p1 are the
|
||||||
|
// two line end points of the line. If side_flag is true, check
|
||||||
|
// to see that end points are on opposite sides of face. Returns
|
||||||
|
// 1 if it intersection found, 0 otherwise. If it intesects,
|
||||||
|
// result is the point of intersection
|
||||||
|
int intersect( fgPoint3d *end0, fgPoint3d *end1, int side_flag,
|
||||||
|
fgPoint3d *result);
|
||||||
|
|
||||||
|
// Constructors
|
||||||
|
fgFRAGMENT ();
|
||||||
|
fgFRAGMENT ( const fgFRAGMENT &image );
|
||||||
|
|
||||||
|
// Destructor
|
||||||
|
~fgFRAGMENT ( );
|
||||||
|
|
||||||
|
// operators
|
||||||
|
fgFRAGMENT & operator = ( const fgFRAGMENT & rhs );
|
||||||
|
bool operator == ( const fgFRAGMENT & rhs );
|
||||||
|
bool operator < ( const fgFRAGMENT & rhs );
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
#endif // _FRAGMENT_HXX
|
||||||
|
|
||||||
|
|
||||||
|
// $Log$
|
||||||
|
// Revision 1.1 1998/08/25 16:51:23 curt
|
||||||
|
// Moved from ../Scenery
|
||||||
|
//
|
||||||
|
//
|
||||||
366
Objects/material.cxx
Normal file
366
Objects/material.cxx
Normal file
|
|
@ -0,0 +1,366 @@
|
||||||
|
// material.cxx -- class to handle material properties
|
||||||
|
//
|
||||||
|
// Written by Curtis Olson, started May 1998.
|
||||||
|
//
|
||||||
|
// Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
|
||||||
|
//
|
||||||
|
// This program is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU General Public License as
|
||||||
|
// published by the Free Software Foundation; either version 2 of the
|
||||||
|
// License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This program is distributed in the hope that it will be useful, but
|
||||||
|
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU General Public License
|
||||||
|
// along with this program; if not, write to the Free Software
|
||||||
|
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||||
|
//
|
||||||
|
// $Id$
|
||||||
|
// (Log is kept at end of this file)
|
||||||
|
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
# include <config.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_WINDOWS_H
|
||||||
|
# include <windows.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <GL/glut.h>
|
||||||
|
#include <XGL/xgl.h>
|
||||||
|
|
||||||
|
#include <string.h>
|
||||||
|
|
||||||
|
#include <Debug/fg_debug.h>
|
||||||
|
#include <Include/fg_zlib.h>
|
||||||
|
#include <Main/options.hxx>
|
||||||
|
|
||||||
|
#include "material.hxx"
|
||||||
|
#include "texload.h"
|
||||||
|
|
||||||
|
// global material management class
|
||||||
|
fgMATERIAL_MGR material_mgr;
|
||||||
|
|
||||||
|
|
||||||
|
// Constructor
|
||||||
|
fgMATERIAL::fgMATERIAL ( void ) {
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Sorting routines
|
||||||
|
void fgMATERIAL::init_sort_list( void ) {
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
int fgMATERIAL::append_sort_list( fgFRAGMENT *object ) {
|
||||||
|
return(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Destructor
|
||||||
|
fgMATERIAL::~fgMATERIAL ( void ) {
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Constructor
|
||||||
|
fgMATERIAL_MGR::fgMATERIAL_MGR ( void ) {
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Load a library of material properties
|
||||||
|
int fgMATERIAL_MGR::load_lib ( void ) {
|
||||||
|
fgMATERIAL m;
|
||||||
|
char material_name[256];
|
||||||
|
char mpath[256], fg_mpath[256], tpath[256], fg_tpath[256];
|
||||||
|
char line[256], *line_ptr, value[256];
|
||||||
|
GLubyte *texbuf;
|
||||||
|
fgFile f;
|
||||||
|
int width, height;
|
||||||
|
int alpha;
|
||||||
|
|
||||||
|
// build the path name to the material db
|
||||||
|
current_options.get_fg_root(mpath);
|
||||||
|
strcat(mpath, "/Scenery/");
|
||||||
|
strcat(mpath, "Materials");
|
||||||
|
strcpy(fg_mpath, mpath);
|
||||||
|
strcat(fg_mpath, ".gz");
|
||||||
|
|
||||||
|
// first try "path.gz"
|
||||||
|
if ( (f = fgopen(fg_mpath, "rb")) == NULL ) {
|
||||||
|
// next try "path"
|
||||||
|
if ( (f = fgopen(mpath, "rb")) == NULL ) {
|
||||||
|
fgPrintf(FG_GENERAL, FG_EXIT, "Cannot open file: %s\n", mpath);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
while ( fggets(f, line, 250) != NULL ) {
|
||||||
|
// printf("%s", line);
|
||||||
|
|
||||||
|
// strip leading white space
|
||||||
|
line_ptr = line;
|
||||||
|
while ( ( (line_ptr[0] == ' ') || (line_ptr[0] == '\t') ) &&
|
||||||
|
(line_ptr[0] != '\n') ) {
|
||||||
|
line_ptr++;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
if ( line_ptr[0] == '#' ) {
|
||||||
|
// ignore lines that start with '#'
|
||||||
|
} else if ( line_ptr[0] == '\n' ) {
|
||||||
|
// ignore blank lines
|
||||||
|
} else if ( strstr(line_ptr, "{") ) {
|
||||||
|
// start of record
|
||||||
|
alpha = 0;
|
||||||
|
m.ambient[0] = m.ambient[1] = m.ambient[2] = m.ambient[3] = 0.0;
|
||||||
|
m.diffuse[0] = m.diffuse[1] = m.diffuse[2] = m.diffuse[3] = 0.0;
|
||||||
|
m.specular[0] = m.specular[1] = m.specular[2] = m.specular[3] = 0.0;
|
||||||
|
m.emissive[0] = m.emissive[1] = m.emissive[2] = m.emissive[3] = 0.0;
|
||||||
|
|
||||||
|
material_name[0] = '\0';
|
||||||
|
sscanf(line_ptr, "%s", material_name);
|
||||||
|
if ( ! strlen(material_name) ) {
|
||||||
|
fgPrintf( FG_TERRAIN, FG_INFO, "Bad material name in '%s'\n",
|
||||||
|
line );
|
||||||
|
}
|
||||||
|
printf(" Loading material = %s\n", material_name);
|
||||||
|
} else if ( strncmp(line_ptr, "alpha", 5) == 0 ) {
|
||||||
|
line_ptr += 5;
|
||||||
|
while ( ( (line_ptr[0] == ' ') || (line_ptr[0] == '\t') ||
|
||||||
|
(line_ptr[0] == '=') ) &&
|
||||||
|
(line_ptr[0] != '\n') ) {
|
||||||
|
line_ptr++;
|
||||||
|
}
|
||||||
|
sscanf(line_ptr, "%s\n", value);
|
||||||
|
if ( strcmp(value, "no") == 0 ) {
|
||||||
|
alpha = 0;
|
||||||
|
} else if ( strcmp(value, "yes") == 0 ) {
|
||||||
|
alpha = 1;
|
||||||
|
} else {
|
||||||
|
fgPrintf( FG_TERRAIN, FG_INFO, "Bad alpha value '%s'\n", line );
|
||||||
|
}
|
||||||
|
} else if ( (strncmp(line_ptr, "texture", 7) == 0) &&
|
||||||
|
!current_options.get_textures() ) {
|
||||||
|
// do nothing
|
||||||
|
} else if ( strncmp(line_ptr, "texture", 7) == 0 ) {
|
||||||
|
line_ptr += 7;
|
||||||
|
while ( ( (line_ptr[0] == ' ') || (line_ptr[0] == '\t') ||
|
||||||
|
(line_ptr[0] == '=') ) &&
|
||||||
|
(line_ptr[0] != '\n') ) {
|
||||||
|
line_ptr++;
|
||||||
|
}
|
||||||
|
// printf("texture name = %s\n", line_ptr);
|
||||||
|
sscanf(line_ptr, "%s\n", m.texture_name);
|
||||||
|
|
||||||
|
// create the texture object and bind it
|
||||||
|
#ifdef GL_VERSION_1_1
|
||||||
|
xglGenTextures(1, &m.texture_id);
|
||||||
|
xglBindTexture(GL_TEXTURE_2D, m.texture_id);
|
||||||
|
#elif GL_EXT_texture_object
|
||||||
|
xglGenTexturesEXT(1, &m.texture_id);
|
||||||
|
xglBindTextureEXT(GL_TEXTURE_2D, m.texture_id);
|
||||||
|
#else
|
||||||
|
# error port me
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// set the texture parameters for this texture
|
||||||
|
xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ) ;
|
||||||
|
xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ) ;
|
||||||
|
xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
|
||||||
|
GL_LINEAR );
|
||||||
|
// xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
|
||||||
|
// GL_NEAREST_MIPMAP_NEAREST );
|
||||||
|
xglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
|
||||||
|
/* GL_LINEAR */
|
||||||
|
/* GL_NEAREST_MIPMAP_LINEAR */
|
||||||
|
GL_LINEAR_MIPMAP_LINEAR ) ;
|
||||||
|
|
||||||
|
/* load in the texture data */
|
||||||
|
current_options.get_fg_root(tpath);
|
||||||
|
strcat(tpath, "/Textures/");
|
||||||
|
strcat(tpath, m.texture_name);
|
||||||
|
strcat(tpath, ".rgb");
|
||||||
|
|
||||||
|
if ( alpha == 0 ) {
|
||||||
|
// load rgb texture
|
||||||
|
|
||||||
|
// Try uncompressed
|
||||||
|
if ( (texbuf = read_rgb_texture(tpath, &width, &height))
|
||||||
|
== NULL ) {
|
||||||
|
// Try compressed
|
||||||
|
strcpy(fg_tpath, tpath);
|
||||||
|
strcat(fg_tpath, ".gz");
|
||||||
|
if ( (texbuf = read_rgb_texture(fg_tpath, &width, &height))
|
||||||
|
== NULL ) {
|
||||||
|
fgPrintf( FG_GENERAL, FG_EXIT,
|
||||||
|
"Error in loading texture %s\n", tpath );
|
||||||
|
return(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* xglTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0,
|
||||||
|
GL_RGB, GL_UNSIGNED_BYTE, texbuf); */
|
||||||
|
|
||||||
|
gluBuild2DMipmaps( GL_TEXTURE_2D, GL_RGB, width, height,
|
||||||
|
GL_RGB, GL_UNSIGNED_BYTE, texbuf );
|
||||||
|
} else if ( alpha == 1 ) {
|
||||||
|
// load rgba (alpha) texture
|
||||||
|
|
||||||
|
// Try uncompressed
|
||||||
|
if ( (texbuf = read_alpha_texture(tpath, &width, &height))
|
||||||
|
== NULL ) {
|
||||||
|
// Try compressed
|
||||||
|
strcpy(fg_tpath, tpath);
|
||||||
|
strcat(fg_tpath, ".gz");
|
||||||
|
if ((texbuf = read_alpha_texture(fg_tpath, &width, &height))
|
||||||
|
== NULL ) {
|
||||||
|
fgPrintf( FG_GENERAL, FG_EXIT,
|
||||||
|
"Error in loading texture %s\n", tpath );
|
||||||
|
return(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
xglTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
|
||||||
|
GL_RGBA, GL_UNSIGNED_BYTE, texbuf);
|
||||||
|
}
|
||||||
|
|
||||||
|
} else if ( strncmp(line_ptr, "ambient", 7) == 0 ) {
|
||||||
|
line_ptr += 7;
|
||||||
|
while ( ( (line_ptr[0] == ' ') || (line_ptr[0] == '\t') ||
|
||||||
|
(line_ptr[0] == '=') ) &&
|
||||||
|
(line_ptr[0] != '\n') ) {
|
||||||
|
line_ptr++;
|
||||||
|
}
|
||||||
|
sscanf( line_ptr, "%f %f %f %f",
|
||||||
|
&m.ambient[0], &m.ambient[1], &m.ambient[2], &m.ambient[3]);
|
||||||
|
} else if ( strncmp(line_ptr, "diffuse", 7) == 0 ) {
|
||||||
|
line_ptr += 7;
|
||||||
|
while ( ( (line_ptr[0] == ' ') || (line_ptr[0] == '\t') ||
|
||||||
|
(line_ptr[0] == '=') ) &&
|
||||||
|
(line_ptr[0] != '\n') ) {
|
||||||
|
line_ptr++;
|
||||||
|
}
|
||||||
|
sscanf( line_ptr, "%f %f %f %f",
|
||||||
|
&m.diffuse[0], &m.diffuse[1], &m.diffuse[2], &m.diffuse[3]);
|
||||||
|
} else if ( strncmp(line_ptr, "specular", 8) == 0 ) {
|
||||||
|
line_ptr += 8;
|
||||||
|
while ( ( (line_ptr[0] == ' ') || (line_ptr[0] == '\t') ||
|
||||||
|
(line_ptr[0] == '=') ) &&
|
||||||
|
(line_ptr[0] != '\n') ) {
|
||||||
|
line_ptr++;
|
||||||
|
}
|
||||||
|
sscanf( line_ptr, "%f %f %f %f",
|
||||||
|
&m.specular[0], &m.specular[1],
|
||||||
|
&m.specular[2], &m.specular[3]);
|
||||||
|
} else if ( strncmp(line_ptr, "emissive", 8) == 0 ) {
|
||||||
|
line_ptr += 8;
|
||||||
|
while ( ( (line_ptr[0] == ' ') || (line_ptr[0] == '\t') ||
|
||||||
|
(line_ptr[0] == '=') ) &&
|
||||||
|
(line_ptr[0] != '\n') ) {
|
||||||
|
line_ptr++;
|
||||||
|
}
|
||||||
|
sscanf( line_ptr, "%f %f %f %f",
|
||||||
|
&m.emissive[0], &m.emissive[1],
|
||||||
|
&m.emissive[2], &m.emissive[3]);
|
||||||
|
} else if ( line_ptr[0] == '}' ) {
|
||||||
|
// end of record, lets add this one to the list
|
||||||
|
material_mgr.material_map[material_name] = m;
|
||||||
|
} else {
|
||||||
|
fgPrintf(FG_TERRAIN, FG_INFO,
|
||||||
|
"Unknown line in material properties file\n");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fgclose(f);
|
||||||
|
|
||||||
|
return(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Initialize the transient list of fragments for each material property
|
||||||
|
void fgMATERIAL_MGR::init_transient_material_lists( void ) {
|
||||||
|
map < string, fgMATERIAL, less<string> > :: iterator mapcurrent =
|
||||||
|
material_mgr.material_map.begin();
|
||||||
|
map < string, fgMATERIAL, less<string> > :: iterator maplast =
|
||||||
|
material_mgr.material_map.end();
|
||||||
|
|
||||||
|
while ( mapcurrent != maplast ) {
|
||||||
|
// (char *)key = (*mapcurrent).first;
|
||||||
|
// (fgMATERIAL)value = (*mapcurrent).second;
|
||||||
|
(*mapcurrent).second.list_size = 0;
|
||||||
|
|
||||||
|
*mapcurrent++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Destructor
|
||||||
|
fgMATERIAL_MGR::~fgMATERIAL_MGR ( void ) {
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// $Log$
|
||||||
|
// Revision 1.1 1998/08/25 16:51:24 curt
|
||||||
|
// Moved from ../Scenery
|
||||||
|
//
|
||||||
|
// Revision 1.13 1998/08/24 20:11:39 curt
|
||||||
|
// Tweaks ...
|
||||||
|
//
|
||||||
|
// Revision 1.12 1998/08/12 21:41:27 curt
|
||||||
|
// Need to negate the test for textures so that textures aren't loaded when
|
||||||
|
// they are disabled rather than visa versa ... :-)
|
||||||
|
//
|
||||||
|
// Revision 1.11 1998/08/12 21:13:03 curt
|
||||||
|
// material.cxx: don't load textures if they are disabled
|
||||||
|
// obj.cxx: optimizations from Norman Vine
|
||||||
|
// tile.cxx: minor tweaks
|
||||||
|
// tile.hxx: addition of num_faces
|
||||||
|
// tilemgr.cxx: minor tweaks
|
||||||
|
//
|
||||||
|
// Revision 1.10 1998/07/24 21:42:06 curt
|
||||||
|
// material.cxx: whups, double method declaration with no definition.
|
||||||
|
// obj.cxx: tweaks to avoid errors in SGI's CC.
|
||||||
|
// tile.cxx: optimizations by Norman Vine.
|
||||||
|
// tilemgr.cxx: optimizations by Norman Vine.
|
||||||
|
//
|
||||||
|
// Revision 1.9 1998/07/13 21:01:57 curt
|
||||||
|
// Wrote access functions for current fgOPTIONS.
|
||||||
|
//
|
||||||
|
// Revision 1.8 1998/07/08 14:47:20 curt
|
||||||
|
// Fix GL_MODULATE vs. GL_DECAL problem introduced by splash screen.
|
||||||
|
// polare3d.h renamed to polar3d.hxx
|
||||||
|
// fg{Cartesian,Polar}Point3d consolodated.
|
||||||
|
// Added some initial support for calculating local current ground elevation.
|
||||||
|
//
|
||||||
|
// Revision 1.7 1998/07/04 00:54:28 curt
|
||||||
|
// Added automatic mipmap generation.
|
||||||
|
//
|
||||||
|
// When rendering fragments, use saved model view matrix from associated tile
|
||||||
|
// rather than recalculating it with push() translate() pop().
|
||||||
|
//
|
||||||
|
// Revision 1.6 1998/06/27 16:54:59 curt
|
||||||
|
// Check for GL_VERSION_1_1 or GL_EXT_texture_object to decide whether to use
|
||||||
|
// "EXT" versions of texture management routines.
|
||||||
|
//
|
||||||
|
// Revision 1.5 1998/06/17 21:36:39 curt
|
||||||
|
// Load and manage multiple textures defined in the Materials library.
|
||||||
|
// Boost max material fagments for each material property to 800.
|
||||||
|
// Multiple texture support when rendering.
|
||||||
|
//
|
||||||
|
// Revision 1.4 1998/06/12 00:58:04 curt
|
||||||
|
// Build only static libraries.
|
||||||
|
// Declare memmove/memset for Sloaris.
|
||||||
|
//
|
||||||
|
// Revision 1.3 1998/06/05 22:39:53 curt
|
||||||
|
// Working on sorting by, and rendering by material properties.
|
||||||
|
//
|
||||||
|
// Revision 1.2 1998/06/01 17:56:20 curt
|
||||||
|
// Incremental additions to material.cxx (not fully functional)
|
||||||
|
// Tweaked vfc_ratio math to avoid divide by zero.
|
||||||
|
//
|
||||||
|
// Revision 1.1 1998/05/30 01:56:45 curt
|
||||||
|
// Added material.cxx material.hxx
|
||||||
|
//
|
||||||
164
Objects/material.hxx
Normal file
164
Objects/material.hxx
Normal file
|
|
@ -0,0 +1,164 @@
|
||||||
|
// material.hxx -- class to handle material properties
|
||||||
|
//
|
||||||
|
// Written by Curtis Olson, started May 1998.
|
||||||
|
//
|
||||||
|
// Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
|
||||||
|
//
|
||||||
|
// This program is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU General Public License as
|
||||||
|
// published by the Free Software Foundation; either version 2 of the
|
||||||
|
// License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This program is distributed in the hope that it will be useful, but
|
||||||
|
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU General Public License
|
||||||
|
// along with this program; if not, write to the Free Software
|
||||||
|
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||||
|
//
|
||||||
|
// $Id$
|
||||||
|
// (Log is kept at end of this file)
|
||||||
|
|
||||||
|
|
||||||
|
#ifndef _MATERIAL_HXX
|
||||||
|
#define _MATERIAL_HXX
|
||||||
|
|
||||||
|
|
||||||
|
#ifndef __cplusplus
|
||||||
|
# error This library requires C++
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
# include <config.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_WINDOWS_H
|
||||||
|
# include <windows.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <GL/glut.h>
|
||||||
|
#include <XGL/xgl.h>
|
||||||
|
|
||||||
|
#if defined ( __sun__ )
|
||||||
|
extern "C" void *memmove(void *, const void *, size_t);
|
||||||
|
extern "C" void *memset(void *, int, size_t);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <string> // Standard C++ string library
|
||||||
|
#include <map> // STL associative "array"
|
||||||
|
|
||||||
|
#ifdef NEEDNAMESPACESTD
|
||||||
|
using namespace std;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include "fragment.hxx"
|
||||||
|
|
||||||
|
|
||||||
|
#define FG_MAX_MATERIAL_FRAGS 800
|
||||||
|
|
||||||
|
|
||||||
|
// Material property class
|
||||||
|
class fgMATERIAL {
|
||||||
|
|
||||||
|
public:
|
||||||
|
// OpenGL texture name
|
||||||
|
GLuint texture_id;
|
||||||
|
|
||||||
|
// file name of texture
|
||||||
|
char texture_name[256];
|
||||||
|
|
||||||
|
// material properties
|
||||||
|
GLfloat ambient[4], diffuse[4], specular[4], emissive[4];
|
||||||
|
GLint texture_ptr;
|
||||||
|
|
||||||
|
// transient list of objects with this material type (used for sorting
|
||||||
|
// by material to reduce GL state changes when rendering the scene
|
||||||
|
fgFRAGMENT * list[FG_MAX_MATERIAL_FRAGS];
|
||||||
|
int list_size;
|
||||||
|
|
||||||
|
// Constructor
|
||||||
|
fgMATERIAL ( void );
|
||||||
|
|
||||||
|
// Sorting routines
|
||||||
|
void init_sort_list( void );
|
||||||
|
int append_sort_list( fgFRAGMENT *object );
|
||||||
|
|
||||||
|
// Destructor
|
||||||
|
~fgMATERIAL ( void );
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
// Material management class
|
||||||
|
class fgMATERIAL_MGR {
|
||||||
|
|
||||||
|
public:
|
||||||
|
|
||||||
|
// associative array of materials
|
||||||
|
map < string, fgMATERIAL, less<string> > material_map;
|
||||||
|
|
||||||
|
// Constructor
|
||||||
|
fgMATERIAL_MGR ( void );
|
||||||
|
|
||||||
|
// Load a library of material properties
|
||||||
|
int load_lib ( void );
|
||||||
|
|
||||||
|
// Initialize the transient list of fragments for each material property
|
||||||
|
void init_transient_material_lists( void );
|
||||||
|
|
||||||
|
// Destructor
|
||||||
|
~fgMATERIAL_MGR ( void );
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
// global material management class
|
||||||
|
extern fgMATERIAL_MGR material_mgr;
|
||||||
|
|
||||||
|
|
||||||
|
#endif // _MATERIAL_HXX
|
||||||
|
|
||||||
|
|
||||||
|
// $Log$
|
||||||
|
// Revision 1.1 1998/08/25 16:51:24 curt
|
||||||
|
// Moved from ../Scenery
|
||||||
|
//
|
||||||
|
// Revision 1.10 1998/07/24 21:42:06 curt
|
||||||
|
// material.cxx: whups, double method declaration with no definition.
|
||||||
|
// obj.cxx: tweaks to avoid errors in SGI's CC.
|
||||||
|
// tile.cxx: optimizations by Norman Vine.
|
||||||
|
// tilemgr.cxx: optimizations by Norman Vine.
|
||||||
|
//
|
||||||
|
// Revision 1.9 1998/07/06 21:34:33 curt
|
||||||
|
// Added using namespace std for compilers that support this.
|
||||||
|
//
|
||||||
|
// Revision 1.8 1998/06/17 21:36:39 curt
|
||||||
|
// Load and manage multiple textures defined in the Materials library.
|
||||||
|
// Boost max material fagments for each material property to 800.
|
||||||
|
// Multiple texture support when rendering.
|
||||||
|
//
|
||||||
|
// Revision 1.7 1998/06/12 00:58:04 curt
|
||||||
|
// Build only static libraries.
|
||||||
|
// Declare memmove/memset for Sloaris.
|
||||||
|
//
|
||||||
|
// Revision 1.6 1998/06/06 01:09:31 curt
|
||||||
|
// I goofed on the log message in the last commit ... now fixed.
|
||||||
|
//
|
||||||
|
// Revision 1.5 1998/06/06 01:07:17 curt
|
||||||
|
// Increased per material fragment list size from 100 to 400.
|
||||||
|
// Now correctly draw viewable fragments in per material order.
|
||||||
|
//
|
||||||
|
// Revision 1.4 1998/06/05 22:39:53 curt
|
||||||
|
// Working on sorting by, and rendering by material properties.
|
||||||
|
//
|
||||||
|
// Revision 1.3 1998/06/03 00:47:50 curt
|
||||||
|
// No .h for STL includes.
|
||||||
|
// Minor view culling optimizations.
|
||||||
|
//
|
||||||
|
// Revision 1.2 1998/06/01 17:56:20 curt
|
||||||
|
// Incremental additions to material.cxx (not fully functional)
|
||||||
|
// Tweaked vfc_ratio math to avoid divide by zero.
|
||||||
|
//
|
||||||
|
// Revision 1.1 1998/05/30 01:56:45 curt
|
||||||
|
// Added material.cxx material.hxx
|
||||||
|
//
|
||||||
720
Objects/obj.cxx
Normal file
720
Objects/obj.cxx
Normal file
|
|
@ -0,0 +1,720 @@
|
||||||
|
// obj.cxx -- routines to handle "sorta" WaveFront .obj format files.
|
||||||
|
//
|
||||||
|
// Written by Curtis Olson, started October 1997.
|
||||||
|
//
|
||||||
|
// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
|
||||||
|
//
|
||||||
|
// This program is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU General Public License as
|
||||||
|
// published by the Free Software Foundation; either version 2 of the
|
||||||
|
// License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This program is distributed in the hope that it will be useful, but
|
||||||
|
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU General Public License
|
||||||
|
// along with this program; if not, write to the Free Software
|
||||||
|
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||||
|
//
|
||||||
|
// $Id$
|
||||||
|
// (Log is kept at end of this file)
|
||||||
|
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
# include <config.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_WINDOWS_H
|
||||||
|
# include <windows.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <string.h>
|
||||||
|
#include <GL/glut.h>
|
||||||
|
#include <XGL/xgl.h>
|
||||||
|
|
||||||
|
#if defined ( __sun__ )
|
||||||
|
extern "C" void *memmove(void *, const void *, size_t);
|
||||||
|
extern "C" void *memset(void *, int, size_t);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <string> // Standard C++ library
|
||||||
|
#include <map> // STL
|
||||||
|
|
||||||
|
#ifdef NEEDNAMESPACESTD
|
||||||
|
using namespace std;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <Debug/fg_debug.h>
|
||||||
|
#include <Include/fg_constants.h>
|
||||||
|
#include <Include/fg_zlib.h>
|
||||||
|
#include <Main/options.hxx>
|
||||||
|
#include <Math/mat3.h>
|
||||||
|
#include <Math/fg_random.h>
|
||||||
|
#include <Math/polar3d.hxx>
|
||||||
|
#include <Scenery/tile.hxx>
|
||||||
|
|
||||||
|
#include "material.hxx"
|
||||||
|
#include "obj.hxx"
|
||||||
|
|
||||||
|
|
||||||
|
static double normals[MAX_NODES][3];
|
||||||
|
|
||||||
|
|
||||||
|
// given three points defining a triangle, calculate the normal
|
||||||
|
static void calc_normal(double p1[3], double p2[3],
|
||||||
|
double p3[3], double normal[3])
|
||||||
|
{
|
||||||
|
double v1[3], v2[3];
|
||||||
|
double temp;
|
||||||
|
|
||||||
|
v1[0] = p2[0] - p1[0]; v1[1] = p2[1] - p1[1]; v1[2] = p2[2] - p1[2];
|
||||||
|
v2[0] = p3[0] - p1[0]; v2[1] = p3[1] - p1[1]; v2[2] = p3[2] - p1[2];
|
||||||
|
|
||||||
|
MAT3cross_product(normal, v1, v2);
|
||||||
|
MAT3_NORMALIZE_VEC(normal,temp);
|
||||||
|
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, " Normal = %.2f %.2f %.2f\n",
|
||||||
|
// normal[0], normal[1], normal[2]);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
#define FG_TEX_CONSTANT 128.0
|
||||||
|
|
||||||
|
|
||||||
|
// Calculate texture coordinates for a given point.
|
||||||
|
fgPoint3d calc_tex_coords(double *node, fgPoint3d *ref) {
|
||||||
|
fgPoint3d cp;
|
||||||
|
fgPoint3d pp;
|
||||||
|
|
||||||
|
cp.x = node[0] + ref->x;
|
||||||
|
cp.y = node[1] + ref->y;
|
||||||
|
cp.z = node[2] + ref->z;
|
||||||
|
|
||||||
|
pp = fgCartToPolar3d(cp);
|
||||||
|
|
||||||
|
pp.lon = fmod(RAD_TO_DEG * FG_TEX_CONSTANT * pp.lon, 25.0);
|
||||||
|
pp.lat = fmod(RAD_TO_DEG * FG_TEX_CONSTANT * pp.lat, 25.0);
|
||||||
|
|
||||||
|
return(pp);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Load a .obj file and build the GL fragment list
|
||||||
|
int fgObjLoad(char *path, fgTILE *t) {
|
||||||
|
fgFRAGMENT fragment;
|
||||||
|
fgPoint3d pp;
|
||||||
|
char fgpath[256], line[256], material[256];
|
||||||
|
double approx_normal[3], normal[3], scale;
|
||||||
|
// double x, y, z, xmax, xmin, ymax, ymin, zmax, zmin;
|
||||||
|
// GLfloat sgenparams[] = { 1.0, 0.0, 0.0, 0.0 };
|
||||||
|
GLint display_list;
|
||||||
|
fgFile f;
|
||||||
|
int shading;
|
||||||
|
int in_fragment, in_faces, vncount, n1, n2, n3, n4;
|
||||||
|
int last1, last2, odd;
|
||||||
|
double (*nodes)[3];
|
||||||
|
fgPoint3d *center;
|
||||||
|
|
||||||
|
// First try "path.gz" (compressed format)
|
||||||
|
strcpy(fgpath, path);
|
||||||
|
strcat(fgpath, ".gz");
|
||||||
|
if ( (f = fgopen(fgpath, "rb")) == NULL ) {
|
||||||
|
// Next try "path" (uncompressed format)
|
||||||
|
strcpy(fgpath, path);
|
||||||
|
if ( (f = fgopen(fgpath, "rb")) == NULL ) {
|
||||||
|
// Next try "path.obj" (uncompressed format)
|
||||||
|
strcat(fgpath, ".gz");
|
||||||
|
if ( (f = fgopen(fgpath, "rb")) == NULL ) {
|
||||||
|
strcpy(fgpath, path);
|
||||||
|
fgPrintf( FG_TERRAIN, FG_ALERT,
|
||||||
|
"Cannot open file: %s\n", fgpath );
|
||||||
|
return(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
shading = current_options.get_shading();
|
||||||
|
|
||||||
|
in_fragment = 0;
|
||||||
|
t->ncount = 1;
|
||||||
|
vncount = 1;
|
||||||
|
t->bounding_radius = 0.0;
|
||||||
|
nodes = t->nodes;
|
||||||
|
center = &t->center;
|
||||||
|
|
||||||
|
while ( fggets(f, line, 250) != NULL ) {
|
||||||
|
if ( line[0] == '#' ) {
|
||||||
|
// comment -- ignore
|
||||||
|
} else if ( line[0] == '\n' ) {
|
||||||
|
// empty line -- ignore
|
||||||
|
} else if ( strncmp(line, "gbs ", 4) == 0 ) {
|
||||||
|
// reference point (center offset)
|
||||||
|
sscanf(line, "gbs %lf %lf %lf %lf\n",
|
||||||
|
&t->center.x, &t->center.y, &t->center.z,
|
||||||
|
&t->bounding_radius);
|
||||||
|
} else if ( strncmp(line, "bs ", 3) == 0 ) {
|
||||||
|
// reference point (center offset)
|
||||||
|
sscanf(line, "bs %lf %lf %lf %lf\n",
|
||||||
|
&fragment.center.x, &fragment.center.y, &fragment.center.z,
|
||||||
|
&fragment.bounding_radius);
|
||||||
|
} else if ( strncmp(line, "v ", 2) == 0 ) {
|
||||||
|
// node (vertex)
|
||||||
|
if ( t->ncount < MAX_NODES ) {
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, "vertex = %s", line);
|
||||||
|
sscanf(line, "v %lf %lf %lf\n",
|
||||||
|
&(t->nodes[t->ncount][0]), &(t->nodes[t->ncount][1]),
|
||||||
|
&(t->nodes[t->ncount][2]));
|
||||||
|
|
||||||
|
t->ncount++;
|
||||||
|
|
||||||
|
} else {
|
||||||
|
fgPrintf( FG_TERRAIN, FG_EXIT,
|
||||||
|
"Read too many nodes ... dying :-(\n");
|
||||||
|
}
|
||||||
|
} else if ( strncmp(line, "vn ", 3) == 0 ) {
|
||||||
|
// vertex normal
|
||||||
|
if ( vncount < MAX_NODES ) {
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, "vertex normal = %s", line);
|
||||||
|
sscanf(line, "vn %lf %lf %lf\n",
|
||||||
|
&normals[vncount][0], &normals[vncount][1],
|
||||||
|
&normals[vncount][2]);
|
||||||
|
vncount++;
|
||||||
|
} else {
|
||||||
|
fgPrintf( FG_TERRAIN, FG_EXIT,
|
||||||
|
"Read too many vertex normals ... dying :-(\n");
|
||||||
|
}
|
||||||
|
} else if ( strncmp(line, "usemtl ", 7) == 0 ) {
|
||||||
|
// material property specification
|
||||||
|
|
||||||
|
// this also signals the start of a new fragment
|
||||||
|
if ( in_fragment ) {
|
||||||
|
// close out the previous structure and start the next
|
||||||
|
xglEnd();
|
||||||
|
xglEndList();
|
||||||
|
|
||||||
|
// update fragment
|
||||||
|
fragment.display_list = display_list;
|
||||||
|
|
||||||
|
// push this fragment onto the tile's object list
|
||||||
|
t->fragment_list.push_back(fragment);
|
||||||
|
} else {
|
||||||
|
in_fragment = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
display_list = xglGenLists(1);
|
||||||
|
xglNewList(display_list, GL_COMPILE);
|
||||||
|
in_faces = 0;
|
||||||
|
|
||||||
|
// reset the existing face list
|
||||||
|
// printf("cleaning a fragment with %d faces\n",
|
||||||
|
// fragment.faces.size());
|
||||||
|
while ( fragment.faces.size() ) {
|
||||||
|
// printf("emptying face list\n");
|
||||||
|
fragment.faces.pop_front();
|
||||||
|
}
|
||||||
|
|
||||||
|
// scan the material line
|
||||||
|
sscanf(line, "usemtl %s\n", material);
|
||||||
|
|
||||||
|
// give the fragment a pointer back to the tile
|
||||||
|
fragment.tile_ptr = t;
|
||||||
|
|
||||||
|
// find this material in the properties list
|
||||||
|
map < string, fgMATERIAL, less<string> > :: iterator myfind =
|
||||||
|
material_mgr.material_map.find(material);
|
||||||
|
if ( myfind == material_mgr.material_map.end() ) {
|
||||||
|
fgPrintf( FG_TERRAIN, FG_ALERT,
|
||||||
|
"Ack! unknown usemtl name = %s in %s\n",
|
||||||
|
material, path);
|
||||||
|
} else {
|
||||||
|
fragment.material_ptr = &((*myfind).second);
|
||||||
|
}
|
||||||
|
|
||||||
|
// initialize the fragment transformation matrix
|
||||||
|
/*
|
||||||
|
for ( i = 0; i < 16; i++ ) {
|
||||||
|
fragment.matrix[i] = 0.0;
|
||||||
|
}
|
||||||
|
fragment.matrix[0] = fragment.matrix[5] =
|
||||||
|
fragment.matrix[10] = fragment.matrix[15] = 1.0;
|
||||||
|
*/
|
||||||
|
|
||||||
|
// initialize fragment face counter
|
||||||
|
fragment.num_faces = 0;
|
||||||
|
|
||||||
|
} else if ( line[0] == 't' ) {
|
||||||
|
// start a new triangle strip
|
||||||
|
|
||||||
|
n1 = n2 = n3 = n4 = 0;
|
||||||
|
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, " new tri strip = %s", line);
|
||||||
|
sscanf(line, "t %d %d %d %d\n", &n1, &n2, &n3, &n4);
|
||||||
|
|
||||||
|
fragment.add_face(n1, n2, n3);
|
||||||
|
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, "(t) = ");
|
||||||
|
|
||||||
|
xglBegin(GL_TRIANGLE_STRIP);
|
||||||
|
|
||||||
|
odd = 1;
|
||||||
|
scale = 1.0;
|
||||||
|
|
||||||
|
if ( shading ) {
|
||||||
|
// Shading model is "GL_SMOOTH" so use precalculated
|
||||||
|
// (averaged) normals
|
||||||
|
MAT3_SCALE_VEC(normal, normals[n1], scale);
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
pp = calc_tex_coords(nodes[n1], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n1][0],t->nodes[n1][1],t->nodes[n1][2]);
|
||||||
|
xglVertex3dv(nodes[n1]);
|
||||||
|
|
||||||
|
MAT3_SCALE_VEC(normal, normals[n2], scale);
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
pp = calc_tex_coords(nodes[n2], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
//xglVertex3d(t->nodes[n2][0],t->nodes[n2][1],t->nodes[n2][2]);
|
||||||
|
xglVertex3dv(nodes[n2]);
|
||||||
|
|
||||||
|
MAT3_SCALE_VEC(normal, normals[n3], scale);
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
pp = calc_tex_coords(nodes[n3], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n3][0],t->nodes[n3][1],t->nodes[n3][2]);
|
||||||
|
xglVertex3dv(nodes[n3]);
|
||||||
|
} else {
|
||||||
|
// Shading model is "GL_FLAT" so calculate per face
|
||||||
|
// normals on the fly.
|
||||||
|
if ( odd ) {
|
||||||
|
calc_normal(nodes[n1], nodes[n2],
|
||||||
|
nodes[n3], approx_normal);
|
||||||
|
} else {
|
||||||
|
calc_normal(nodes[n2], nodes[n1],
|
||||||
|
nodes[n3], approx_normal);
|
||||||
|
}
|
||||||
|
MAT3_SCALE_VEC(normal, approx_normal, scale);
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
|
||||||
|
pp = calc_tex_coords(nodes[n1], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n1][0],t->nodes[n1][1],t->nodes[n1][2]);
|
||||||
|
xglVertex3dv(nodes[n1]);
|
||||||
|
|
||||||
|
pp = calc_tex_coords(nodes[n2], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n2][0],t->nodes[n2][1],t->nodes[n2][2]);
|
||||||
|
xglVertex3dv(nodes[n2]);
|
||||||
|
|
||||||
|
pp = calc_tex_coords(nodes[n3], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n3][0],t->nodes[n3][1],t->nodes[n3][2]);
|
||||||
|
xglVertex3dv(nodes[n3]);
|
||||||
|
}
|
||||||
|
|
||||||
|
odd = 1 - odd;
|
||||||
|
last1 = n2;
|
||||||
|
last2 = n3;
|
||||||
|
|
||||||
|
if ( n4 > 0 ) {
|
||||||
|
fragment.add_face(n3, n2, n4);
|
||||||
|
|
||||||
|
if ( shading ) {
|
||||||
|
// Shading model is "GL_SMOOTH"
|
||||||
|
MAT3_SCALE_VEC(normal, normals[n4], scale);
|
||||||
|
} else {
|
||||||
|
// Shading model is "GL_FLAT"
|
||||||
|
calc_normal(nodes[n3], nodes[n2], nodes[n4],
|
||||||
|
approx_normal);
|
||||||
|
MAT3_SCALE_VEC(normal, approx_normal, scale);
|
||||||
|
}
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
pp = calc_tex_coords(nodes[n4], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n4][0],t->nodes[n4][1],t->nodes[n4][2]);
|
||||||
|
xglVertex3dv(nodes[n4]);
|
||||||
|
|
||||||
|
odd = 1 - odd;
|
||||||
|
last1 = n3;
|
||||||
|
last2 = n4;
|
||||||
|
}
|
||||||
|
} else if ( line[0] == 'f' ) {
|
||||||
|
// unoptimized face
|
||||||
|
|
||||||
|
if ( !in_faces ) {
|
||||||
|
xglBegin(GL_TRIANGLES);
|
||||||
|
in_faces = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, "new triangle = %s", line);*/
|
||||||
|
sscanf(line, "f %d %d %d\n", &n1, &n2, &n3);
|
||||||
|
|
||||||
|
fragment.add_face(n1, n2, n3);
|
||||||
|
|
||||||
|
// xglNormal3d(normals[n1][0], normals[n1][1], normals[n1][2]);
|
||||||
|
xglNormal3dv(normals[n1]);
|
||||||
|
pp = calc_tex_coords(nodes[n1], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n1][0], t->nodes[n1][1], t->nodes[n1][2]);
|
||||||
|
xglVertex3dv(nodes[n1]);
|
||||||
|
|
||||||
|
// xglNormal3d(normals[n2][0], normals[n2][1], normals[n2][2]);
|
||||||
|
xglNormal3dv(normals[n2]);
|
||||||
|
pp = calc_tex_coords(nodes[n2], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n2][0], t->nodes[n2][1], t->nodes[n2][2]);
|
||||||
|
xglVertex3dv(nodes[n2]);
|
||||||
|
|
||||||
|
// xglNormal3d(normals[n3][0], normals[n3][1], normals[n3][2]);
|
||||||
|
xglNormal3dv(normals[n3]);
|
||||||
|
pp = calc_tex_coords(nodes[n3], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n3][0], t->nodes[n3][1], t->nodes[n3][2]);
|
||||||
|
xglVertex3dv(nodes[n3]);
|
||||||
|
} else if ( line[0] == 'q' ) {
|
||||||
|
// continue a triangle strip
|
||||||
|
n1 = n2 = 0;
|
||||||
|
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, "continued tri strip = %s ",
|
||||||
|
// line);
|
||||||
|
sscanf(line, "q %d %d\n", &n1, &n2);
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, "read %d %d\n", n1, n2);
|
||||||
|
|
||||||
|
if ( odd ) {
|
||||||
|
fragment.add_face(last1, last2, n1);
|
||||||
|
} else {
|
||||||
|
fragment.add_face(last2, last1, n1);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ( shading ) {
|
||||||
|
// Shading model is "GL_SMOOTH"
|
||||||
|
MAT3_SCALE_VEC(normal, normals[n1], scale);
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
} else {
|
||||||
|
// Shading model is "GL_FLAT"
|
||||||
|
if ( odd ) {
|
||||||
|
calc_normal(nodes[last1], nodes[last2], nodes[n1],
|
||||||
|
approx_normal);
|
||||||
|
} else {
|
||||||
|
calc_normal(nodes[last2], nodes[last1], nodes[n1],
|
||||||
|
approx_normal);
|
||||||
|
}
|
||||||
|
MAT3_SCALE_VEC(normal, approx_normal, scale);
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
}
|
||||||
|
|
||||||
|
pp = calc_tex_coords(nodes[n1], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n1][0], t->nodes[n1][1], t->nodes[n1][2]);
|
||||||
|
xglVertex3dv(nodes[n1]);
|
||||||
|
|
||||||
|
odd = 1 - odd;
|
||||||
|
last1 = last2;
|
||||||
|
last2 = n1;
|
||||||
|
|
||||||
|
if ( n2 > 0 ) {
|
||||||
|
// fgPrintf( FG_TERRAIN, FG_DEBUG, " (cont)\n");
|
||||||
|
|
||||||
|
if ( odd ) {
|
||||||
|
fragment.add_face(last1, last2, n2);
|
||||||
|
} else {
|
||||||
|
fragment.add_face(last2, last1, n2);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ( shading ) {
|
||||||
|
// Shading model is "GL_SMOOTH"
|
||||||
|
MAT3_SCALE_VEC(normal, normals[n2], scale);
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
} else {
|
||||||
|
// Shading model is "GL_FLAT"
|
||||||
|
if ( odd ) {
|
||||||
|
calc_normal(nodes[last1], nodes[last2],
|
||||||
|
nodes[n2], approx_normal);
|
||||||
|
} else {
|
||||||
|
calc_normal(nodes[last2], nodes[last1],
|
||||||
|
nodes[n2], approx_normal);
|
||||||
|
}
|
||||||
|
MAT3_SCALE_VEC(normal, approx_normal, scale);
|
||||||
|
xglNormal3dv(normal);
|
||||||
|
}
|
||||||
|
|
||||||
|
pp = calc_tex_coords(nodes[n2], center);
|
||||||
|
xglTexCoord2f(pp.lon, pp.lat);
|
||||||
|
// xglVertex3d(t->nodes[n2][0],t->nodes[n2][1],t->nodes[n2][2]);
|
||||||
|
xglVertex3dv(nodes[n2]);
|
||||||
|
|
||||||
|
odd = 1 -odd;
|
||||||
|
last1 = last2;
|
||||||
|
last2 = n2;
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
fgPrintf( FG_TERRAIN, FG_WARN, "Unknown line in %s = %s\n",
|
||||||
|
path, line);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if ( in_fragment ) {
|
||||||
|
// close out the previous structure and start the next
|
||||||
|
xglEnd();
|
||||||
|
xglEndList();
|
||||||
|
|
||||||
|
// update fragment
|
||||||
|
fragment.display_list = display_list;
|
||||||
|
|
||||||
|
// push this fragment onto the tile's object list
|
||||||
|
t->fragment_list.push_back(fragment);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Draw normal vectors (for visually verifying normals)
|
||||||
|
/*
|
||||||
|
xglBegin(GL_LINES);
|
||||||
|
xglColor3f(0.0, 0.0, 0.0);
|
||||||
|
for ( i = 0; i < t->ncount; i++ ) {
|
||||||
|
xglVertex3d(t->nodes[i][0],
|
||||||
|
t->nodes[i][1] ,
|
||||||
|
t->nodes[i][2]);
|
||||||
|
xglVertex3d(t->nodes[i][0] + 500*normals[i][0],
|
||||||
|
t->nodes[i][1] + 500*normals[i][1],
|
||||||
|
t->nodes[i][2] + 500*normals[i][2]);
|
||||||
|
}
|
||||||
|
xglEnd();
|
||||||
|
*/
|
||||||
|
|
||||||
|
fgclose(f);
|
||||||
|
|
||||||
|
return(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// $Log$
|
||||||
|
// Revision 1.1 1998/08/25 16:51:25 curt
|
||||||
|
// Moved from ../Scenery
|
||||||
|
//
|
||||||
|
// Revision 1.23 1998/08/20 15:16:43 curt
|
||||||
|
// obj.cxx: use more explicit parenthases.
|
||||||
|
// texload.[ch]: use const in function definitions where appropriate.
|
||||||
|
//
|
||||||
|
// Revision 1.22 1998/08/20 15:12:03 curt
|
||||||
|
// Used a forward declaration of classes fgTILE and fgMATERIAL to eliminate
|
||||||
|
// the need for "void" pointers and casts.
|
||||||
|
// Quick hack to count the number of scenery polygons that are being drawn.
|
||||||
|
//
|
||||||
|
// Revision 1.21 1998/08/12 21:13:04 curt
|
||||||
|
// material.cxx: don't load textures if they are disabled
|
||||||
|
// obj.cxx: optimizations from Norman Vine
|
||||||
|
// tile.cxx: minor tweaks
|
||||||
|
// tile.hxx: addition of num_faces
|
||||||
|
// tilemgr.cxx: minor tweaks
|
||||||
|
//
|
||||||
|
// Revision 1.20 1998/07/24 21:42:07 curt
|
||||||
|
// material.cxx: whups, double method declaration with no definition.
|
||||||
|
// obj.cxx: tweaks to avoid errors in SGI's CC.
|
||||||
|
// tile.cxx: optimizations by Norman Vine.
|
||||||
|
// tilemgr.cxx: optimizations by Norman Vine.
|
||||||
|
//
|
||||||
|
// Revision 1.19 1998/07/13 21:01:58 curt
|
||||||
|
// Wrote access functions for current fgOPTIONS.
|
||||||
|
//
|
||||||
|
// Revision 1.18 1998/07/12 03:18:27 curt
|
||||||
|
// Added ground collision detection. This involved:
|
||||||
|
// - saving the entire vertex list for each tile with the tile records.
|
||||||
|
// - saving the face list for each fragment with the fragment records.
|
||||||
|
// - code to intersect the current vertical line with the proper face in
|
||||||
|
// an efficient manner as possible.
|
||||||
|
// Fixed a bug where the tiles weren't being shifted to "near" (0,0,0)
|
||||||
|
//
|
||||||
|
// Revision 1.17 1998/07/08 14:47:21 curt
|
||||||
|
// Fix GL_MODULATE vs. GL_DECAL problem introduced by splash screen.
|
||||||
|
// polare3d.h renamed to polar3d.hxx
|
||||||
|
// fg{Cartesian,Polar}Point3d consolodated.
|
||||||
|
// Added some initial support for calculating local current ground elevation.
|
||||||
|
//
|
||||||
|
// Revision 1.16 1998/07/06 21:34:33 curt
|
||||||
|
// Added using namespace std for compilers that support this.
|
||||||
|
//
|
||||||
|
// Revision 1.15 1998/07/04 00:54:28 curt
|
||||||
|
// Added automatic mipmap generation.
|
||||||
|
//
|
||||||
|
// When rendering fragments, use saved model view matrix from associated tile
|
||||||
|
// rather than recalculating it with push() translate() pop().
|
||||||
|
//
|
||||||
|
// Revision 1.14 1998/06/17 21:36:40 curt
|
||||||
|
// Load and manage multiple textures defined in the Materials library.
|
||||||
|
// Boost max material fagments for each material property to 800.
|
||||||
|
// Multiple texture support when rendering.
|
||||||
|
//
|
||||||
|
// Revision 1.13 1998/06/12 00:58:05 curt
|
||||||
|
// Build only static libraries.
|
||||||
|
// Declare memmove/memset for Sloaris.
|
||||||
|
//
|
||||||
|
// Revision 1.12 1998/06/08 17:57:54 curt
|
||||||
|
// Working first pass at material proporty sorting.
|
||||||
|
//
|
||||||
|
// Revision 1.11 1998/06/06 01:09:31 curt
|
||||||
|
// I goofed on the log message in the last commit ... now fixed.
|
||||||
|
//
|
||||||
|
// Revision 1.10 1998/06/06 01:07:17 curt
|
||||||
|
// Increased per material fragment list size from 100 to 400.
|
||||||
|
// Now correctly draw viewable fragments in per material order.
|
||||||
|
//
|
||||||
|
// Revision 1.9 1998/06/05 22:39:54 curt
|
||||||
|
// Working on sorting by, and rendering by material properties.
|
||||||
|
//
|
||||||
|
// Revision 1.8 1998/06/05 18:19:18 curt
|
||||||
|
// Recognize file, file.gz, and file.obj as scenery object files.
|
||||||
|
//
|
||||||
|
// Revision 1.7 1998/05/24 02:49:09 curt
|
||||||
|
// Implimented fragment level view frustum culling.
|
||||||
|
//
|
||||||
|
// Revision 1.6 1998/05/23 14:09:20 curt
|
||||||
|
// Added tile.cxx and tile.hxx.
|
||||||
|
// Working on rewriting the tile management system so a tile is just a list
|
||||||
|
// fragments, and the fragment record contains the display list for that
|
||||||
|
// fragment.
|
||||||
|
//
|
||||||
|
// Revision 1.5 1998/05/20 20:53:53 curt
|
||||||
|
// Moved global ref point and radius (bounding sphere info, and offset) to
|
||||||
|
// data file rather than calculating it on the fly.
|
||||||
|
// Fixed polygon winding problem in scenery generation stage rather than
|
||||||
|
// compensating for it on the fly.
|
||||||
|
// Made a fgTILECACHE class.
|
||||||
|
//
|
||||||
|
// Revision 1.4 1998/05/16 13:09:57 curt
|
||||||
|
// Beginning to add support for view frustum culling.
|
||||||
|
// Added some temporary code to calculate bouding radius, until the
|
||||||
|
// scenery generation tools and scenery can be updated.
|
||||||
|
//
|
||||||
|
// Revision 1.3 1998/05/03 00:48:01 curt
|
||||||
|
// Updated texture coordinate fmod() parameter.
|
||||||
|
//
|
||||||
|
// Revision 1.2 1998/05/02 01:52:14 curt
|
||||||
|
// Playing around with texture coordinates.
|
||||||
|
//
|
||||||
|
// Revision 1.1 1998/04/30 12:35:28 curt
|
||||||
|
// Added a command line rendering option specify smooth/flat shading.
|
||||||
|
//
|
||||||
|
// Revision 1.35 1998/04/28 21:43:26 curt
|
||||||
|
// Wrapped zlib calls up so we can conditionally comment out zlib support.
|
||||||
|
//
|
||||||
|
// Revision 1.34 1998/04/28 01:21:42 curt
|
||||||
|
// Tweaked texture parameter calculations to keep the number smaller. This
|
||||||
|
// avoids the "swimming" problem.
|
||||||
|
// Type-ified fgTIME and fgVIEW.
|
||||||
|
//
|
||||||
|
// Revision 1.33 1998/04/27 15:58:15 curt
|
||||||
|
// Screwing around with texture coordinate generation ... still needs work.
|
||||||
|
//
|
||||||
|
// Revision 1.32 1998/04/27 03:30:13 curt
|
||||||
|
// Minor transformation adjustments to try to keep scenery tiles closer to
|
||||||
|
// (0, 0, 0) GLfloats run out of precision at the distances we need to model
|
||||||
|
// the earth, but we can do a bunch of pre-transformations using double math
|
||||||
|
// and then cast to GLfloat once everything is close in where we have less
|
||||||
|
// precision problems.
|
||||||
|
//
|
||||||
|
// Revision 1.31 1998/04/25 15:09:57 curt
|
||||||
|
// Changed "r" to "rb" in gzopen() options. This fixes bad behavior in win32.
|
||||||
|
//
|
||||||
|
// Revision 1.30 1998/04/24 14:21:08 curt
|
||||||
|
// Added "file.obj.gz" support.
|
||||||
|
//
|
||||||
|
// Revision 1.29 1998/04/24 00:51:07 curt
|
||||||
|
// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
|
||||||
|
// Tweaked the scenery file extentions to be "file.obj" (uncompressed)
|
||||||
|
// or "file.obz" (compressed.)
|
||||||
|
//
|
||||||
|
// Revision 1.28 1998/04/22 13:22:44 curt
|
||||||
|
// C++ - ifing the code a bit.
|
||||||
|
//
|
||||||
|
// Revision 1.27 1998/04/18 04:13:17 curt
|
||||||
|
// Added zlib on the fly decompression support for loading scenery objects.
|
||||||
|
//
|
||||||
|
// Revision 1.26 1998/04/03 22:11:36 curt
|
||||||
|
// Converting to Gnu autoconf system.
|
||||||
|
//
|
||||||
|
// Revision 1.25 1998/03/14 00:30:50 curt
|
||||||
|
// Beginning initial terrain texturing experiments.
|
||||||
|
//
|
||||||
|
// Revision 1.24 1998/02/09 21:30:18 curt
|
||||||
|
// Fixed a nagging problem with terrain tiles not "quite" matching up perfectly.
|
||||||
|
//
|
||||||
|
// Revision 1.23 1998/02/09 15:07:52 curt
|
||||||
|
// Minor tweaks.
|
||||||
|
//
|
||||||
|
// Revision 1.22 1998/02/01 03:39:54 curt
|
||||||
|
// Minor tweaks.
|
||||||
|
//
|
||||||
|
// Revision 1.21 1998/01/31 00:43:25 curt
|
||||||
|
// Added MetroWorks patches from Carmen Volpe.
|
||||||
|
//
|
||||||
|
// Revision 1.20 1998/01/29 00:51:39 curt
|
||||||
|
// First pass at tile cache, dynamic tile loading and tile unloading now works.
|
||||||
|
//
|
||||||
|
// Revision 1.19 1998/01/27 03:26:42 curt
|
||||||
|
// Playing with new fgPrintf command.
|
||||||
|
//
|
||||||
|
// Revision 1.18 1998/01/19 19:27:16 curt
|
||||||
|
// Merged in make system changes from Bob Kuehne <rpk@sgi.com>
|
||||||
|
// This should simplify things tremendously.
|
||||||
|
//
|
||||||
|
// Revision 1.17 1998/01/13 00:23:10 curt
|
||||||
|
// Initial changes to support loading and management of scenery tiles. Note,
|
||||||
|
// there's still a fair amount of work left to be done.
|
||||||
|
//
|
||||||
|
// Revision 1.16 1997/12/30 23:09:40 curt
|
||||||
|
// Worked on winding problem without luck, so back to calling glFrontFace()
|
||||||
|
// 3 times for each scenery area.
|
||||||
|
//
|
||||||
|
// Revision 1.15 1997/12/30 20:47:51 curt
|
||||||
|
// Integrated new event manager with subsystem initializations.
|
||||||
|
//
|
||||||
|
// Revision 1.14 1997/12/30 01:38:46 curt
|
||||||
|
// Switched back to per vertex normals and smooth shading for terrain.
|
||||||
|
//
|
||||||
|
// Revision 1.13 1997/12/18 23:32:36 curt
|
||||||
|
// First stab at sky dome actually starting to look reasonable. :-)
|
||||||
|
//
|
||||||
|
// Revision 1.12 1997/12/17 23:13:47 curt
|
||||||
|
// Began working on rendering the sky.
|
||||||
|
//
|
||||||
|
// Revision 1.11 1997/12/15 23:55:01 curt
|
||||||
|
// Add xgl wrappers for debugging.
|
||||||
|
// Generate terrain normals on the fly.
|
||||||
|
//
|
||||||
|
// Revision 1.10 1997/12/12 21:41:28 curt
|
||||||
|
// More light/material property tweaking ... still a ways off.
|
||||||
|
//
|
||||||
|
// Revision 1.9 1997/12/12 19:52:57 curt
|
||||||
|
// Working on lightling and material properties.
|
||||||
|
//
|
||||||
|
// Revision 1.8 1997/12/10 01:19:51 curt
|
||||||
|
// Tweaks for verion 0.15 release.
|
||||||
|
//
|
||||||
|
// Revision 1.7 1997/12/08 22:51:17 curt
|
||||||
|
// Enhanced to handle ccw and cw tri-stripe winding. This is a temporary
|
||||||
|
// admission of defeat. I will eventually go back and get all the stripes
|
||||||
|
// wound the same way (ccw).
|
||||||
|
//
|
||||||
|
// Revision 1.6 1997/11/25 19:25:35 curt
|
||||||
|
// Changes to integrate Durk's moon/sun code updates + clean up.
|
||||||
|
//
|
||||||
|
// Revision 1.5 1997/11/15 18:16:39 curt
|
||||||
|
// minor tweaks.
|
||||||
|
//
|
||||||
|
// Revision 1.4 1997/11/14 00:26:49 curt
|
||||||
|
// Transform scenery coordinates earlier in pipeline when scenery is being
|
||||||
|
// created, not when it is being loaded. Precalculate normals for each node
|
||||||
|
// as average of the normals of each containing polygon so Garoude shading is
|
||||||
|
// now supportable.
|
||||||
|
//
|
||||||
|
// Revision 1.3 1997/10/31 04:49:12 curt
|
||||||
|
// Tweaking vertex orders.
|
||||||
|
//
|
||||||
|
// Revision 1.2 1997/10/30 12:38:45 curt
|
||||||
|
// Working on new scenery subsystem.
|
||||||
|
//
|
||||||
|
// Revision 1.1 1997/10/28 21:14:54 curt
|
||||||
|
// Initial revision.
|
||||||
|
|
||||||
|
|
||||||
112
Objects/obj.hxx
Normal file
112
Objects/obj.hxx
Normal file
|
|
@ -0,0 +1,112 @@
|
||||||
|
// obj.hxx -- routines to handle WaveFront .obj-ish format files.
|
||||||
|
//
|
||||||
|
// Written by Curtis Olson, started October 1997.
|
||||||
|
//
|
||||||
|
// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
|
||||||
|
//
|
||||||
|
// This program is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU General Public License as
|
||||||
|
// published by the Free Software Foundation; either version 2 of the
|
||||||
|
// License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This program is distributed in the hope that it will be useful, but
|
||||||
|
// WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU General Public License
|
||||||
|
// along with this program; if not, write to the Free Software
|
||||||
|
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||||
|
//
|
||||||
|
// $Id$
|
||||||
|
// (Log is kept at end of this file)
|
||||||
|
|
||||||
|
|
||||||
|
#ifndef _OBJ_HXX
|
||||||
|
#define _OBJ_HXX
|
||||||
|
|
||||||
|
|
||||||
|
#ifndef __cplusplus
|
||||||
|
# error This library requires C++
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
# include <config.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_WINDOWS_H
|
||||||
|
# include <windows.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <GL/glut.h>
|
||||||
|
|
||||||
|
#include <Include/fg_types.h>
|
||||||
|
|
||||||
|
#include <Scenery/tile.hxx>
|
||||||
|
|
||||||
|
|
||||||
|
// Load a .obj file and build the GL fragment list
|
||||||
|
int fgObjLoad(char *path, fgTILE *tile);
|
||||||
|
|
||||||
|
|
||||||
|
#endif // _OBJ_HXX
|
||||||
|
|
||||||
|
|
||||||
|
// $Log$
|
||||||
|
// Revision 1.1 1998/08/25 16:51:26 curt
|
||||||
|
// Moved from ../Scenery
|
||||||
|
//
|
||||||
|
// Revision 1.4 1998/05/24 02:49:10 curt
|
||||||
|
// Implimented fragment level view frustum culling.
|
||||||
|
//
|
||||||
|
// Revision 1.3 1998/05/23 14:09:21 curt
|
||||||
|
// Added tile.cxx and tile.hxx.
|
||||||
|
// Working on rewriting the tile management system so a tile is just a list
|
||||||
|
// fragments, and the fragment record contains the display list for that
|
||||||
|
// fragment.
|
||||||
|
//
|
||||||
|
// Revision 1.2 1998/05/02 01:52:15 curt
|
||||||
|
// Playing around with texture coordinates.
|
||||||
|
//
|
||||||
|
// Revision 1.1 1998/04/30 12:35:29 curt
|
||||||
|
// Added a command line rendering option specify smooth/flat shading.
|
||||||
|
//
|
||||||
|
// Revision 1.11 1998/04/25 22:06:31 curt
|
||||||
|
// Edited cvs log messages in source files ... bad bad bad!
|
||||||
|
//
|
||||||
|
// Revision 1.10 1998/04/24 00:51:07 curt
|
||||||
|
// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
|
||||||
|
// Tweaked the scenery file extentions to be "file.obj" (uncompressed)
|
||||||
|
// or "file.obz" (compressed.)
|
||||||
|
//
|
||||||
|
// Revision 1.9 1998/04/22 13:22:45 curt
|
||||||
|
// C++ - ifing the code a bit.
|
||||||
|
//
|
||||||
|
// Revision 1.8 1998/04/21 17:02:43 curt
|
||||||
|
// Prepairing for C++ integration.
|
||||||
|
//
|
||||||
|
// Revision 1.7 1998/04/03 22:11:37 curt
|
||||||
|
// Converting to Gnu autoconf system.
|
||||||
|
//
|
||||||
|
// Revision 1.6 1998/01/31 00:43:25 curt
|
||||||
|
// Added MetroWorks patches from Carmen Volpe.
|
||||||
|
//
|
||||||
|
// Revision 1.5 1998/01/27 00:48:03 curt
|
||||||
|
// Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
|
||||||
|
// system and commandline/config file processing code.
|
||||||
|
//
|
||||||
|
// Revision 1.4 1998/01/22 02:59:41 curt
|
||||||
|
// Changed #ifdef FILE_H to #ifdef _FILE_H
|
||||||
|
//
|
||||||
|
// Revision 1.3 1998/01/19 19:27:17 curt
|
||||||
|
// Merged in make system changes from Bob Kuehne <rpk@sgi.com>
|
||||||
|
// This should simplify things tremendously.
|
||||||
|
//
|
||||||
|
// Revision 1.2 1998/01/13 00:23:10 curt
|
||||||
|
// Initial changes to support loading and management of scenery tiles. Note,
|
||||||
|
// there's still a fair amount of work left to be done.
|
||||||
|
//
|
||||||
|
// Revision 1.1 1997/10/28 21:14:55 curt
|
||||||
|
// Initial revision.
|
||||||
|
|
||||||
273
Objects/texload.c
Normal file
273
Objects/texload.c
Normal file
|
|
@ -0,0 +1,273 @@
|
||||||
|
|
||||||
|
/* texture.c - by David Blythe, SGI */
|
||||||
|
|
||||||
|
/* texload is a simplistic routine for reading an SGI .rgb image file. */
|
||||||
|
|
||||||
|
#ifdef HAVE_CONFIG_H
|
||||||
|
# include <config.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef HAVE_WINDOWS_H
|
||||||
|
# include <windows.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <string.h>
|
||||||
|
|
||||||
|
#include <Include/fg_zlib.h>
|
||||||
|
|
||||||
|
#include "texload.h"
|
||||||
|
|
||||||
|
typedef struct _ImageRec {
|
||||||
|
unsigned short imagic;
|
||||||
|
unsigned short type;
|
||||||
|
unsigned short dim;
|
||||||
|
unsigned short xsize, ysize, zsize;
|
||||||
|
unsigned int min, max;
|
||||||
|
unsigned int wasteBytes;
|
||||||
|
char name[80];
|
||||||
|
unsigned long colorMap;
|
||||||
|
fgFile file;
|
||||||
|
unsigned char *tmp;
|
||||||
|
unsigned long rleEnd;
|
||||||
|
unsigned int *rowStart;
|
||||||
|
int *rowSize;
|
||||||
|
} ImageRec;
|
||||||
|
|
||||||
|
void
|
||||||
|
rgbtorgb(unsigned char *r,unsigned char *g,unsigned char *b,unsigned char *l,int n) {
|
||||||
|
while(n--) {
|
||||||
|
l[0] = r[0];
|
||||||
|
l[1] = g[0];
|
||||||
|
l[2] = b[0];
|
||||||
|
l += 3; r++; g++; b++;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
ConvertShort(unsigned short *array, unsigned int length) {
|
||||||
|
unsigned short b1, b2;
|
||||||
|
unsigned char *ptr;
|
||||||
|
|
||||||
|
ptr = (unsigned char *)array;
|
||||||
|
while (length--) {
|
||||||
|
b1 = *ptr++;
|
||||||
|
b2 = *ptr++;
|
||||||
|
*array++ = (b1 << 8) | (b2);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
ConvertUint(unsigned *array, unsigned int length) {
|
||||||
|
unsigned int b1, b2, b3, b4;
|
||||||
|
unsigned char *ptr;
|
||||||
|
|
||||||
|
ptr = (unsigned char *)array;
|
||||||
|
while (length--) {
|
||||||
|
b1 = *ptr++;
|
||||||
|
b2 = *ptr++;
|
||||||
|
b3 = *ptr++;
|
||||||
|
b4 = *ptr++;
|
||||||
|
*array++ = (b1 << 24) | (b2 << 16) | (b3 << 8) | (b4);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static ImageRec *ImageOpen(const char *fileName)
|
||||||
|
{
|
||||||
|
union {
|
||||||
|
int testWord;
|
||||||
|
char testByte[4];
|
||||||
|
} endianTest;
|
||||||
|
|
||||||
|
ImageRec *image;
|
||||||
|
int swapFlag;
|
||||||
|
int x;
|
||||||
|
|
||||||
|
endianTest.testWord = 1;
|
||||||
|
if (endianTest.testByte[0] == 1) {
|
||||||
|
swapFlag = 1;
|
||||||
|
} else {
|
||||||
|
swapFlag = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
image = (ImageRec *)malloc(sizeof(ImageRec));
|
||||||
|
if (image == NULL) {
|
||||||
|
fprintf(stderr, "Out of memory!\n");
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
if ((image->file = fgopen(fileName, "rb")) == NULL) {
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
// fread(image, 1, 12, image->file);
|
||||||
|
fgread(image->file, image, 12);
|
||||||
|
|
||||||
|
if (swapFlag) {
|
||||||
|
ConvertShort(&image->imagic, 6);
|
||||||
|
}
|
||||||
|
|
||||||
|
image->tmp = (unsigned char *)malloc(image->xsize*256);
|
||||||
|
if (image->tmp == NULL) {
|
||||||
|
fprintf(stderr, "\nOut of memory!\n");
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((image->type & 0xFF00) == 0x0100) {
|
||||||
|
x = image->ysize * image->zsize * (int) sizeof(unsigned);
|
||||||
|
image->rowStart = (unsigned *)malloc(x);
|
||||||
|
image->rowSize = (int *)malloc(x);
|
||||||
|
if (image->rowStart == NULL || image->rowSize == NULL) {
|
||||||
|
fprintf(stderr, "\nOut of memory!\n");
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
image->rleEnd = 512 + (2 * x);
|
||||||
|
fgseek(image->file, 512, SEEK_SET);
|
||||||
|
// fread(image->rowStart, 1, x, image->file);
|
||||||
|
fgread(image->file, image->rowStart, x);
|
||||||
|
// fread(image->rowSize, 1, x, image->file);
|
||||||
|
fgread(image->file, image->rowSize, x);
|
||||||
|
if (swapFlag) {
|
||||||
|
ConvertUint(image->rowStart, x/(int) sizeof(unsigned));
|
||||||
|
ConvertUint((unsigned *)image->rowSize, x/(int) sizeof(int));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return image;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
ImageClose(ImageRec *image) {
|
||||||
|
fgclose(image->file);
|
||||||
|
free(image->tmp);
|
||||||
|
free(image);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
ImageGetRow(ImageRec *image, unsigned char *buf, int y, int z) {
|
||||||
|
unsigned char *iPtr, *oPtr, pixel;
|
||||||
|
int count;
|
||||||
|
|
||||||
|
if ((image->type & 0xFF00) == 0x0100) {
|
||||||
|
fgseek(image->file, (long) image->rowStart[y+z*image->ysize], SEEK_SET);
|
||||||
|
// fread(image->tmp, 1, (unsigned int)image->rowSize[y+z*image->ysize],
|
||||||
|
// image->file);
|
||||||
|
fgread(image->file, image->tmp,
|
||||||
|
(unsigned int)image->rowSize[y+z*image->ysize]);
|
||||||
|
|
||||||
|
iPtr = image->tmp;
|
||||||
|
oPtr = buf;
|
||||||
|
for (;;) {
|
||||||
|
pixel = *iPtr++;
|
||||||
|
count = (int)(pixel & 0x7F);
|
||||||
|
if (!count) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (pixel & 0x80) {
|
||||||
|
while (count--) {
|
||||||
|
*oPtr++ = *iPtr++;
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
pixel = *iPtr++;
|
||||||
|
while (count--) {
|
||||||
|
*oPtr++ = pixel;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
fgseek(image->file, 512+(y*image->xsize)+(z*image->xsize*image->ysize),
|
||||||
|
SEEK_SET);
|
||||||
|
// fread(buf, 1, image->xsize, image->file);
|
||||||
|
fgread(image->file, buf, image->xsize);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
GLubyte *
|
||||||
|
read_alpha_texture(const char *name, int *width, int *height)
|
||||||
|
{
|
||||||
|
unsigned char *base, *lptr;
|
||||||
|
ImageRec *image;
|
||||||
|
int y;
|
||||||
|
|
||||||
|
image = ImageOpen(name);
|
||||||
|
if(!image) {
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
(*width)=image->xsize;
|
||||||
|
(*height)=image->ysize;
|
||||||
|
|
||||||
|
printf("image->zsize = %d\n", image->zsize);
|
||||||
|
|
||||||
|
if (image->zsize != 1) {
|
||||||
|
ImageClose(image);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
base = (unsigned char *)malloc(image->xsize*image->ysize*sizeof(unsigned char));
|
||||||
|
lptr = base;
|
||||||
|
for(y=0; y<image->ysize; y++) {
|
||||||
|
ImageGetRow(image,lptr,y,0);
|
||||||
|
lptr += image->xsize;
|
||||||
|
}
|
||||||
|
ImageClose(image);
|
||||||
|
|
||||||
|
return (unsigned char *) base;
|
||||||
|
}
|
||||||
|
|
||||||
|
GLubyte *
|
||||||
|
read_rgb_texture(const char *name, int *width, int *height)
|
||||||
|
{
|
||||||
|
unsigned char *base, *ptr;
|
||||||
|
unsigned char *rbuf, *gbuf, *bbuf, *abuf;
|
||||||
|
ImageRec *image;
|
||||||
|
int y;
|
||||||
|
|
||||||
|
image = ImageOpen(name);
|
||||||
|
|
||||||
|
if(!image)
|
||||||
|
return NULL;
|
||||||
|
(*width)=image->xsize;
|
||||||
|
(*height)=image->ysize;
|
||||||
|
if (image->zsize != 3 && image->zsize != 4) {
|
||||||
|
ImageClose(image);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
base = (unsigned char*)malloc(image->xsize*image->ysize*sizeof(unsigned int)*3);
|
||||||
|
rbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
|
||||||
|
gbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
|
||||||
|
bbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
|
||||||
|
abuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
|
||||||
|
if(!base || !rbuf || !gbuf || !bbuf || !abuf) {
|
||||||
|
if (base) free(base);
|
||||||
|
if (rbuf) free(rbuf);
|
||||||
|
if (gbuf) free(gbuf);
|
||||||
|
if (bbuf) free(bbuf);
|
||||||
|
if (abuf) free(abuf);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
ptr = base;
|
||||||
|
for(y=0; y<image->ysize; y++) {
|
||||||
|
if(image->zsize == 4) {
|
||||||
|
ImageGetRow(image,rbuf,y,0);
|
||||||
|
ImageGetRow(image,gbuf,y,1);
|
||||||
|
ImageGetRow(image,bbuf,y,2);
|
||||||
|
ImageGetRow(image,abuf,y,3); /* Discard. */
|
||||||
|
rgbtorgb(rbuf,gbuf,bbuf,ptr,image->xsize);
|
||||||
|
ptr += (image->xsize * 3);
|
||||||
|
} else {
|
||||||
|
ImageGetRow(image,rbuf,y,0);
|
||||||
|
ImageGetRow(image,gbuf,y,1);
|
||||||
|
ImageGetRow(image,bbuf,y,2);
|
||||||
|
rgbtorgb(rbuf,gbuf,bbuf,ptr,image->xsize);
|
||||||
|
ptr += (image->xsize * 3);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
ImageClose(image);
|
||||||
|
free(rbuf);
|
||||||
|
free(gbuf);
|
||||||
|
free(bbuf);
|
||||||
|
free(abuf);
|
||||||
|
|
||||||
|
return (GLubyte *) base;
|
||||||
|
}
|
||||||
30
Objects/texload.h
Normal file
30
Objects/texload.h
Normal file
|
|
@ -0,0 +1,30 @@
|
||||||
|
|
||||||
|
/* Copyright (c) Mark J. Kilgard, 1997. */
|
||||||
|
|
||||||
|
/* This program is freely distributable without licensing fees
|
||||||
|
and is provided without guarantee or warrantee expressed or
|
||||||
|
implied. This program is -not- in the public domain. */
|
||||||
|
|
||||||
|
|
||||||
|
#ifndef _TEXLOAD_H
|
||||||
|
#define _TEXLOAD_H
|
||||||
|
|
||||||
|
|
||||||
|
#include <GL/glut.h>
|
||||||
|
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
extern "C" {
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
extern GLubyte *read_alpha_texture(const char *name, int *width, int *height);
|
||||||
|
extern GLubyte * read_rgb_texture(const char *name, int *width, int *height);
|
||||||
|
|
||||||
|
|
||||||
|
#ifdef __cplusplus
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
|
||||||
|
#endif /* _TEXLOAD_H */
|
||||||
Loading…
Add table
Reference in a new issue