Jettisoned old bucketutils.[ch] for newbucket.[ch]xx
This commit is contained in:
curt
parent
79e6c529ea
commit
22d4058564
5 changed files with 22 additions and 564 deletions
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@ -1,7 +1,6 @@
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noinst_LIBRARIES = libBucket.a
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libBucket_a_SOURCES = bucketutils.cxx bucketutils.h bucketutils.hxx \
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newbucket.cxx newbucket.hxx
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libBucket_a_SOURCES = newbucket.cxx newbucket.hxx
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bin_PROGRAMS = testbucket
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@ -1,332 +0,0 @@
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// bucketutils.c -- support routines to handle fgBUCKET operations
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//
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// Written by Curtis Olson, started January 1998.
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//
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// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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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 <math.h>
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#include <stdio.h>
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#include <Include/fg_constants.h>
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#include "bucketutils.h"
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/* Generate the unique scenery tile index containing the specified
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lon/lat parameters.
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The index is constructed as follows:
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9 bits - to represent 360 degrees of longitude (-180 to 179)
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8 bits - to represent 180 degrees of latitude (-90 to 89)
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Each 1 degree by 1 degree tile is further broken down into an 8x8
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grid. So we also need:
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3 bits - to represent x (0 to 7)
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3 bits - to represent y (0 to 7) */
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long int fgBucketGenIndex( const fgBUCKET *p) {
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long index = 0;
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index = ((p->lon + 180) << 14) + ((p->lat + 90) << 6) + (p->y << 3) + p->x;
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// printf(" generated index = %ld\n", index);
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return(index);
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}
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// Parse a unique scenery tile index and find the lon, lat, x, and y
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void fgBucketParseIndex(long int index, fgBUCKET *p) {
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p->lon = index >> 14;
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index -= p->lon << 14;
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p->lon -= 180;
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p->lat = index >> 6;
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index -= p->lat << 6;
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p->lat -= 90;
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p->y = index >> 3;
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index -= p->y << 3;
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p->x = index;
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}
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// Build a path name from an tile index
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void fgBucketGenBasePath( const fgBUCKET *p, char *path) {
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// long int index;
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int top_lon, top_lat, main_lon, main_lat;
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char hem, pole;
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// index = fgBucketGenIndex(p);
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path[0] = '\0';
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top_lon = p->lon / 10;
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main_lon = p->lon;
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if ( (p->lon < 0) && (top_lon * 10 != p->lon) ) {
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top_lon -= 1;
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}
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top_lon *= 10;
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if ( top_lon >= 0 ) {
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hem = 'e';
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} else {
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hem = 'w';
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top_lon *= -1;
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}
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if ( main_lon < 0 ) {
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main_lon *= -1;
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}
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top_lat = p->lat / 10;
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main_lat = p->lat;
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if ( (p->lat < 0) && (top_lat * 10 != p->lat) ) {
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top_lat -= 1;
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}
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top_lat *= 10;
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if ( top_lat >= 0 ) {
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pole = 'n';
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} else {
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pole = 's';
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top_lat *= -1;
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}
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if ( main_lat < 0 ) {
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main_lat *= -1;
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}
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sprintf(path, "%c%03d%c%03d/%c%03d%c%03d",
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hem, top_lon, pole, top_lat,
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hem, main_lon, pole, main_lat);
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}
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// offset an bucket struct by the specified amounts in the X & Y direction
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void fgBucketOffset(fgBUCKET *in, fgBUCKET *out, int x, int y) {
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int diff, temp;
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int dist_lat;
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out->lon = in->lon;
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out->lat = in->lat;
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out->x = in->x;
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out->y = in->y;
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// do X direction
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diff = out->x + x;
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// printf(" reducing x (%d)\n", diff);
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if ( diff >= 0 ) {
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temp = diff / 8;
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} else if ( diff < -7 ) {
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temp = (diff + 1) / 8 - 1;
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} else {
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temp = diff / 8 - 1;
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}
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out->x = ((diff % 8) + 8) % 8;
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out->lon = ( (out->lon + 180 + 360 + temp) % 360 ) - 180;
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// do Y direction
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diff = out->y + y;
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// printf(" reducing x (%d)\n", diff);
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if ( diff >= 0 ) {
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temp = diff / 8;
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} else if ( diff < -7 ) {
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temp = (diff + 1) / 8 - 1;
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} else {
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temp = diff / 8 - 1;
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}
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out->y = ((diff % 8) + 8) % 8;
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out->lat = out->lat + temp;
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if ( out->lat >= 90 ) {
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dist_lat = out->lat - 90;
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// printf(" +lat = %d +y = %d\n", dist_lat, out->y);
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out->lat = 90 - (dist_lat + 1);
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out->lon = ( (out->lon + 180 + 180) % 360 ) - 180;
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out->y = 7 - out->y;
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}
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if ( out->lat < -90 ) {
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dist_lat = -90 - out->lat;
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// printf(" +lat = %d +y = %d\n", dist_lat, out->y);
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out->lat = -90 + (dist_lat - 1);
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out->lon = ( (out->lon + 180 + 180) % 360 ) - 180;
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out->y = 7 - out->y;
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}
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}
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// Given a lat/lon in degrees, find the "bucket" or tile that it falls
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// within
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void fgBucketFind(double lon, double lat, fgBUCKET *p) {
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double diff;
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diff = lon - (double)(int)lon;
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// printf("diff = %.2f\n", diff);
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if ( (lon >= 0) || (fabs(diff) < FG_EPSILON) ) {
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p->lon = (int)lon;
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} else {
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p->lon = (int)lon - 1;
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}
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// printf(" p->lon = %d\n", p->lon);
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diff = lat - (double)(int)lat;
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// printf("diff = %.2f\n", diff);
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if ( (lat >= 0) || (fabs(diff) < FG_EPSILON) ) {
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p->lat = (int)lat;
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} else {
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p->lat = (int)lat - 1;
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}
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// printf(" p->lat = %d\n", p->lat);
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p->x = (int)((lon - p->lon) * 8);
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p->y = (int)((lat - p->lat) * 8);
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// printf( "Bucket = lon,lat = %d,%d x,y index = %d,%d\n",
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// p->lon, p->lat, p->x, p->y);
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}
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// Given a lat/lon, fill in the local tile index array
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void fgBucketGenIdxArray(fgBUCKET *p1, fgBUCKET *tiles, int width, int height) {
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// fgBUCKET *p2;
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int dw, dh, i, j;
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dh = height / 2;
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dw = width / 2;
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for ( j = 0; j < height; j++ ) {
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for ( i = 0; i < width; i++ ) {
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fgBucketOffset(p1, &tiles[(j*width)+i], i - dw, j - dh);
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// p2 = &tiles[(j*width)+i];
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/* printf( " bucket = %d %d %d %d index = %ld\n",
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p2->lon, p2->lat, p2->x, p2->y,
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fgBucketGenIndex(&tiles[(j*width)+i])); */
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}
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}
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}
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/* sample main for testing
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int main() {
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fgBUCKET p1;
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long int tile[49];
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char path[256];
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double lon, lat;
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int i, j;
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p1.lon = 180;
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p1.lat = 90;
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p1.x = 7;
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p1.y = 7;
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printf("Max index = %ld\n", gen_index(&p1));
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lon = -50.0;
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lat = -50.0;
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find_bucket(lon, lat, &p1);
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gen_idx_array(&p1, tile, 7, 7);
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for ( j = 0; j < 7; j++ ) {
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for ( i = 0; i < 7; i++ ) {
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gen_path(tile[(j*7)+i], path);
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printf(" path = %s\n", path);
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}
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}
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lon = 50.0;
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lat = 50.0;
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find_bucket(lon, lat, &p1);
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gen_idx_array(&p1, tile, 7, 7);
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for ( j = 0; j < 7; j++ ) {
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for ( i = 0; i < 7; i++ ) {
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gen_path(tile[(j*7)+i], path);
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printf(" path = %s\n", path);
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}
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}
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return(1);
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} */
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// $Log$
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// Revision 1.2 1999/02/26 22:07:53 curt
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// Added initial support for native SGI compilers.
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//
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// Revision 1.1 1999/02/17 20:52:05 curt
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// Renamed bucketutils.c -> bucketutils.cxx
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//
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// Revision 1.5 1998/12/09 18:48:08 curt
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// Use C++ style comments.
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//
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// Revision 1.4 1998/12/07 21:08:01 curt
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// Added a const in a couple places to get rid of annoying compiler warnings.
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//
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// Revision 1.3 1998/07/04 00:46:47 curt
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// typedef'd struct fgBUCKET.
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//
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// Revision 1.2 1998/04/25 22:06:22 curt
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// Edited cvs log messages in source files ... bad bad bad!
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//
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// Revision 1.1 1998/04/08 23:28:58 curt
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// Adopted Gnu automake/autoconf system.
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//
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// Revision 1.6 1998/02/09 15:07:51 curt
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// Minor tweaks.
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//
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// Revision 1.5 1998/01/29 00:51:38 curt
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// First pass at tile cache, dynamic tile loading and tile unloading now works.
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//
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// Revision 1.4 1998/01/27 03:26:41 curt
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// Playing with new fgPrintf command.
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//
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// Revision 1.3 1998/01/27 00:48:01 curt
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// Incorporated Paul Bleisch's <pbleisch@acm.org> new debug message
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// system and commandline/config file processing code.
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//
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// Revision 1.2 1998/01/24 00:03:28 curt
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// Initial revision.
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//
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// Revision 1.1 1998/01/23 20:06:51 curt
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// tileutils.* renamed to bucketutils.*
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//
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// Revision 1.6 1998/01/19 19:27:18 curt
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// Merged in make system changes from Bob Kuehne <rpk@sgi.com>
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// This should simplify things tremendously.
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//
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// Revision 1.5 1998/01/14 02:19:04 curt
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// Makde offset_bucket visible to outside.
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//
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// Revision 1.4 1998/01/13 00:23:12 curt
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// Initial changes to support loading and management of scenery tiles. Note,
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// there's still a fair amount of work left to be done.
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//
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// Revision 1.3 1998/01/10 00:01:47 curt
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// Misc api changes and tweaks.
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//
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// Revision 1.2 1998/01/08 02:22:28 curt
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// Continue working on basic features.
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//
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// Revision 1.1 1998/01/07 23:50:52 curt
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// "area" renamed to "tile"
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//
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// Revision 1.1 1998/01/07 23:23:40 curt
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// Initial revision.
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//
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@ -1,135 +0,0 @@
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// bucketutils.h -- support routines to handle fgBUCKET operations
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//
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// Written by Curtis Olson, started January 1998.
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//
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// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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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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#ifndef _BUCKETUTILS_H
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#define _BUCKETUTILS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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int lon; // longitude (-180 to 179)
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int lat; // latitude (-90 to 89)
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int x; // x (0 to 7)
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int y; // y (0 to 7)
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} fgBUCKET;
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/* Generate the unique scenery tile index containing the specified
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lon/lat parameters.
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The index is constructed as follows:
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9 bits - to represent 360 degrees of longitude (-180 to 179)
|
||||
8 bits - to represent 180 degrees of latitude (-90 to 89)
|
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|
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Each 1 degree by 1 degree tile is further broken down into an 8x8
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grid. So we also need:
|
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|
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3 bits - to represent x (0 to 7)
|
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3 bits - to represent y (0 to 7) */
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long int fgBucketGenIndex( const fgBUCKET *p);
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// Parse a unique scenery tile index and find the lon, lat, x, and y
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void fgBucketParseIndex(long int index, fgBUCKET *p);
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// Build a path name from an tile index
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void fgBucketGenBasePath( const fgBUCKET *p, char *path);
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// offset a bucket struct by the specified amounts in the X & Y direction
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void fgBucketOffset(fgBUCKET *in, fgBUCKET *out, int x, int y);
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// Given a lat/lon in degrees, find the "bucket" or tile that it falls
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// within
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void fgBucketFind(double lon, double lat, fgBUCKET *p);
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// Given a lat/lon, fill in the local tile index array
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void fgBucketGenIdxArray(fgBUCKET *p1, fgBUCKET *tiles, int width, int height);
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#ifdef __cplusplus
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}
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#endif
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#endif // _BUCKETUTILS_H
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// $Log$
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// Revision 1.5 1999/02/08 23:52:15 curt
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// Added a new "newbucket.[ch]xx" FGBucket class to replace the old
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// fgBUCKET struct and C routines. This FGBucket class adjusts the tile
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// width towards the poles to ensure the tiles are at least 8 miles wide.
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//
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// Revision 1.4 1998/12/09 18:48:09 curt
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// Use C++ style comments.
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//
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// Revision 1.3 1998/12/07 21:08:03 curt
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// Added a const in a couple places to get rid of annoying compiler warnings.
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//
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// Revision 1.2 1998/07/04 00:46:48 curt
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// typedef'd struct fgBUCKET.
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//
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// Revision 1.1 1998/04/08 23:28:59 curt
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||||
// Adopted Gnu automake/autoconf system.
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//
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||||
// Revision 1.2 1998/01/24 00:03:28 curt
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// Initial revision.
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//
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// Revision 1.1 1998/01/23 20:06:52 curt
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// tileutils.* renamed to bucketutils.*
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//
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// Revision 1.6 1998/01/22 02:59:42 curt
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// Changed #ifdef FILE_H to #ifdef _FILE_H
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//
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// Revision 1.5 1998/01/14 02:19:05 curt
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// Makde offset_bucket visible to outside.
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//
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||||
// Revision 1.4 1998/01/13 00:23:12 curt
|
||||
// Initial changes to support loading and management of scenery tiles. Note,
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// there's still a fair amount of work left to be done.
|
||||
//
|
||||
// Revision 1.3 1998/01/10 00:01:48 curt
|
||||
// Misc api changes and tweaks.
|
||||
//
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||||
// Revision 1.2 1998/01/08 02:22:28 curt
|
||||
// Continue working on basic features.
|
||||
//
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||||
// Revision 1.1 1998/01/07 23:50:52 curt
|
||||
// "area" renamed to "tile"
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//
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||||
// Revision 1.1 1998/01/07 23:23:40 curt
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||||
// Initial revision.
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||||
//
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||||
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||||
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@ -1,83 +0,0 @@
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/**************************************************************************
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* bucketutils.hxx -- support routines to handle fgBUCKET operations
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||||
*
|
||||
* Written by Bernie Bright, started January 1998.
|
||||
*
|
||||
* Copyright (C) 1998 Bernie Bright - bbright@c031.aone.net.au
|
||||
*
|
||||
* 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 _BUCKETUTILS_HXX
|
||||
#define _BUCKETUTILS_HXX
|
||||
|
||||
#include <Include/compiler.h>
|
||||
|
||||
#include STL_STRING
|
||||
|
||||
#include "bucketutils.h"
|
||||
|
||||
FG_USING_STD(string);
|
||||
|
||||
inline bool
|
||||
operator== ( const fgBUCKET& b1, const fgBUCKET& b2 )
|
||||
{
|
||||
return ( b1.lon == b2.lon &&
|
||||
b1.lat == b2.lat &&
|
||||
b1.x == b2.x &&
|
||||
b1.y == b2.y );
|
||||
}
|
||||
|
||||
inline string
|
||||
fgBucketGenIndex( const fgBUCKET& p )
|
||||
{
|
||||
char index_str[256];
|
||||
sprintf( index_str, "%ld", fgBucketGenIndex( &p ) );
|
||||
return string( index_str );
|
||||
}
|
||||
|
||||
inline string
|
||||
fgBucketGenBasePath( const fgBUCKET& p )
|
||||
{
|
||||
char base_path[256];
|
||||
fgBucketGenBasePath( &p, base_path );
|
||||
return string( base_path );
|
||||
}
|
||||
|
||||
inline ostream&
|
||||
operator<< ( ostream& out, const fgBUCKET& b )
|
||||
{
|
||||
return out << b.lon << "," << b.lat << " " << b.x << "," << b.y;
|
||||
}
|
||||
|
||||
#endif /* _BUCKETUTILS_HXX */
|
||||
|
||||
|
||||
// $Log$
|
||||
// Revision 1.3 1999/03/02 01:01:42 curt
|
||||
// Tweaks for compiling with native SGI compilers.
|
||||
//
|
||||
// Revision 1.2 1999/01/19 20:56:53 curt
|
||||
// MacOS portability changes contributed by "Robert Puyol" <puyol@abvent.fr>
|
||||
//
|
||||
// Revision 1.1 1998/11/09 23:42:12 curt
|
||||
// Initial revision.
|
||||
//
|
||||
|
||||
|
||||
|
|
@ -72,6 +72,9 @@ public:
|
|||
// create a bucket based on "long int" index
|
||||
FGBucket(const long int bindex);
|
||||
|
||||
// create an impossible bucket if false
|
||||
FGBucket(const bool is_good);
|
||||
|
||||
~FGBucket();
|
||||
|
||||
// Set the bucket params for the specified lat and lon
|
||||
|
|
@ -79,6 +82,7 @@ public:
|
|||
|
||||
// Generate the unique scenery tile index for this bucket
|
||||
long int gen_index();
|
||||
string gen_index_str();
|
||||
|
||||
// Build the path name for this bucket
|
||||
string gen_base_path();
|
||||
|
|
@ -203,6 +207,14 @@ inline FGBucket::FGBucket(const double dlon, const double dlat) {
|
|||
set_bucket(dlon, dlat);
|
||||
}
|
||||
|
||||
// create an impossible bucket if false
|
||||
inline FGBucket::FGBucket(const bool is_good) {
|
||||
set_bucket(0.0, 0.0);
|
||||
if ( !is_good ) {
|
||||
lon = -1000;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// Parse a unique scenery tile index and find the lon, lat, x, and y
|
||||
inline FGBucket::FGBucket(const long int bindex) {
|
||||
|
|
@ -244,6 +256,12 @@ inline long int FGBucket::gen_index() {
|
|||
return ((lon + 180) << 14) + ((lat + 90) << 6) + (y << 3) + x;
|
||||
}
|
||||
|
||||
inline string FGBucket::gen_index_str() {
|
||||
char tmp[20];
|
||||
sprintf(tmp, "%ld", (((long)lon + 180) << 14) + ((lat + 90) << 6) + (y << 3) + x);
|
||||
return (string)tmp;
|
||||
}
|
||||
|
||||
|
||||
// return the center lon of a tile
|
||||
inline double FGBucket::get_center_lon() const {
|
||||
|
|
@ -306,23 +324,14 @@ operator== ( const FGBucket& b1, const FGBucket& b2 )
|
|||
b1.y == b2.y );
|
||||
}
|
||||
|
||||
/*
|
||||
inline string
|
||||
fgBucketGenIndex( const fgBUCKET& p )
|
||||
{
|
||||
char index_str[256];
|
||||
sprintf( index_str, "%ld", fgBucketGenIndex( &p ) );
|
||||
return string( index_str );
|
||||
}
|
||||
|
||||
*/
|
||||
|
||||
|
||||
|
||||
#endif // _NEWBUCKET_HXX
|
||||
|
||||
|
||||
// $Log$
|
||||
// Revision 1.7 1999/03/25 19:01:51 curt
|
||||
// Jettisoned old bucketutils.[ch] for newbucket.[ch]xx
|
||||
//
|
||||
// Revision 1.6 1999/03/15 17:58:41 curt
|
||||
// MSVC++ portability tweaks contributed by Bernie Bright.
|
||||
// Added using std::ostream declaration.
|
||||
|
|
|
|||
Loading…
Reference in a new issue