Initial revision.
Begin work on rendering the sky. (Rather than just using a clear screen.)
This commit is contained in:
curt
parent
b22a4d27db
commit
9dbcf67b4c
2 changed files with 207 additions and 0 deletions
168
Scenery/sky.c
Normal file
168
Scenery/sky.c
Normal file
|
|
@ -0,0 +1,168 @@
|
|||
/**************************************************************************
|
||||
* sky.c -- model sky with an upside down "bowl"
|
||||
*
|
||||
* Written by Curtis Olson, started December 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 WIN32
|
||||
# include <windows.h>
|
||||
#endif
|
||||
|
||||
#include <math.h>
|
||||
/*
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
*/
|
||||
|
||||
#include <GL/glut.h>
|
||||
#include "../XGL/xgl.h"
|
||||
|
||||
#include "sky.h"
|
||||
|
||||
#include "../Time/fg_time.h"
|
||||
|
||||
#include "../Include/constants.h"
|
||||
#include "../Main/views.h"
|
||||
/*
|
||||
#include "../Include/general.h"
|
||||
#include "../Aircraft/aircraft.h"
|
||||
*/
|
||||
|
||||
/* in meters of course */
|
||||
#define INNER_RADIUS 50000.0
|
||||
#define INNER_ELEV 20000.0
|
||||
#define MIDDLE_RADIUS 70000.0
|
||||
#define MIDDLE_ELEV 10000.0
|
||||
#define OUTER_RADIUS 80000.0
|
||||
#define OUTER_ELEV 0.0
|
||||
|
||||
|
||||
static GLint sky; /* sky display list */
|
||||
static float sky_center[12][3];
|
||||
static float sky_middle[12][3];
|
||||
static float sky_outer[12][3];
|
||||
|
||||
/* (Re)generate the display list */
|
||||
void fgSkyInit() {
|
||||
struct fgLIGHT *l;
|
||||
static int dl_exists = 0;
|
||||
float theta;
|
||||
int i;
|
||||
|
||||
l = &cur_light_params;
|
||||
|
||||
if ( dl_exists ) {
|
||||
xglDeleteLists(sky, 1);
|
||||
} else {
|
||||
dl_exists = 1;
|
||||
|
||||
/* first time through, calculate sky vertices */
|
||||
for ( i = 0; i < 12; i++ ) {
|
||||
theta = (i * 30.0) * DEG_TO_RAD;
|
||||
|
||||
sky_center[i][0] = cos(theta) * INNER_RADIUS;
|
||||
sky_center[i][1] = sin(theta) * INNER_RADIUS;
|
||||
sky_center[i][2] = INNER_ELEV;
|
||||
|
||||
printf(" %.2f %.2f\n", cos(theta) * INNER_RADIUS,
|
||||
sin(theta) * INNER_RADIUS);
|
||||
|
||||
sky_middle[i][0] = cos((double)theta) * MIDDLE_RADIUS;
|
||||
sky_middle[i][1] = sin((double)theta) * MIDDLE_RADIUS;
|
||||
sky_middle[i][2] = MIDDLE_ELEV;
|
||||
|
||||
sky_outer[i][0] = cos((double)theta) * OUTER_RADIUS;
|
||||
sky_outer[i][1] = sin((double)theta) * OUTER_RADIUS;
|
||||
sky_outer[i][2] = OUTER_ELEV;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
printf("Creating the sky\n");
|
||||
|
||||
sky = xglGenLists(1);
|
||||
xglNewList(sky, GL_COMPILE );
|
||||
|
||||
/* xglMaterialfv(GL_FRONT, GL_AMBIENT, l->scene_clear);
|
||||
xglMaterialfv(GL_FRONT, GL_DIFFUSE, moon_color); */
|
||||
|
||||
/* Draw inner section */
|
||||
xglBegin( GL_TRIANGLE_FAN );
|
||||
|
||||
xglVertex3f(0.0, 0.0, INNER_ELEV);
|
||||
|
||||
for ( i = 0; i < 12; i++ ) {
|
||||
xglVertex3fv( sky_center[i] );
|
||||
}
|
||||
|
||||
xglEnd();
|
||||
|
||||
xglEndList();
|
||||
}
|
||||
|
||||
|
||||
/* Draw the Sky */
|
||||
void fgSkyRender() {
|
||||
struct fgVIEW *v;
|
||||
/*
|
||||
struct fgFLIGHT *f;
|
||||
struct fgLIGHT *l;
|
||||
struct fgTIME *t;
|
||||
int i;
|
||||
*/
|
||||
|
||||
v = ¤t_view;
|
||||
/*
|
||||
f = ¤t_aircraft.flight;
|
||||
l = &cur_light_params;
|
||||
t = &cur_time_params;
|
||||
*/
|
||||
|
||||
/* FG_PI_2 + 0.1 is about 6 degrees after sundown and before sunrise */
|
||||
|
||||
/* t->sun_angle = 3.0; */ /* to force stars to be drawn (for testing) */
|
||||
|
||||
printf("Rendering the sky.\n");
|
||||
|
||||
xglDisable( GL_LIGHTING );
|
||||
|
||||
xglPushMatrix();
|
||||
|
||||
/* Translate to view position */
|
||||
xglTranslatef( v->cur_zero_elev.x, v->cur_zero_elev.y, v->cur_zero_elev.z );
|
||||
|
||||
xglCallList( sky );
|
||||
|
||||
xglPopMatrix();
|
||||
|
||||
xglEnable( GL_LIGHTING );
|
||||
}
|
||||
|
||||
|
||||
/* $Log$
|
||||
/* Revision 1.1 1997/12/17 23:14:30 curt
|
||||
/* Initial revision.
|
||||
/* Begin work on rendering the sky. (Rather than just using a clear screen.)
|
||||
/*
|
||||
*/
|
||||
39
Scenery/sky.h
Normal file
39
Scenery/sky.h
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
/**************************************************************************
|
||||
* sky.h -- model sky with an upside down "bowl"
|
||||
*
|
||||
* Written by Curtis Olson, started December 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)
|
||||
**************************************************************************/
|
||||
|
||||
|
||||
/* (Re)generate the display list */
|
||||
void fgSkyInit();
|
||||
|
||||
/* Draw the Sky */
|
||||
void fgSkyRender();
|
||||
|
||||
|
||||
/* $Log$
|
||||
/* Revision 1.1 1997/12/17 23:14:31 curt
|
||||
/* Initial revision.
|
||||
/* Begin work on rendering the sky. (Rather than just using a clear screen.)
|
||||
/*
|
||||
*/
|
||||
Loading…
Reference in a new issue