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- /*
- THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
- SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
- END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
- ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
- IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
- SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
- FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
- CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
- AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
- COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
- */
- /*
- * $Source: f:/miner/source/2d/rcs/testg.c $
- * $Revision: 1.19 $
- * $Author: john $
- * $Date: 1994/09/12 19:28:10 $
- *
- * Program to test the graphics package.
- *
- */
- #include <stdlib.h>
- #include <stdio.h>
- #include <conio.h>
- #include <math.h>
- #include <string.h>
- #include "gr.h"
- #include "key.h"
- #include "timer.h"
- #include "grdef.h"
- #include "mono.h"
- #include "fix.h"
- #include "iff.h"
- #include "palette.h"
- #include "rle.h"
- #include "pcx.h"
- void ReadBitmap( char * filename, grs_bitmap * bmp, ubyte * palette )
- {
- int iff_error;
- iff_error=iff_read_bitmap( filename, bmp, BM_LINEAR, palette );
- if (iff_error != IFF_NO_ERROR) {
- printf("Error loading bitmap <%s>, error=%d",filename,iff_error);
- exit(1);
- }
-
- }
- ubyte getpixel( grs_bitmap * bmp, int x, int y )
- {
- return bmp->bm_data[y*320+x];
- }
- #define EPSILON (0.0000001)
- float cfactor = 1.57;
- int myx = 0;
- ubyte getpixel1( grs_bitmap * bmp, int x, int y )
- {
- float xmid, ymid, xx, yy, delta, dist, factor;
-
- xmid = (bmp->bm_w - 1 ) / 2.0; xx = x - xmid;
- ymid = (bmp->bm_h - 1 ) / 2.0; yy = y - ymid;
- delta = xx*xx + yy*yy;
- if ( delta < EPSILON )
- dist = 0.0;
- else
- dist = 1.01 * sqrt(delta) / min(xmid,ymid);
-
- if ( dist > 1.0 )
- return 0;
- else if ( dist < EPSILON )
- factor = 1.0 / cfactor;
- else
- factor = asin(dist) / (dist * cfactor );
-
- xx = xx * factor; yy = yy * factor;
- x = xx + xmid + myx; y = yy+ymid;
- x = x % bmp->bm_w;
-
- return bmp->bm_data[y*320+x];
- }
- void circle_in_bitmap( grs_bitmap * bmp )
- {
- int i, x, y;
- for ( i=0; i < 10; i++ ) {
- for ( y=0; y<200; y++ ) {
- for ( x=0; x<319; x++ ) {
- gr_setcolor(getpixel1(bmp,x,y));
- gr_pixel( x, y );
- }
- }
- myx += 2;
- getch();
- }
- }
- int descent_critical_error;
- main(int argc, char * argv[] )
- {
- int x, y;
- grs_bitmap bmp;
- grs_bitmap bmp1;
- ubyte palette[768];
- minit();
- printf( "Reading %s...\n", "john.pcx" );
- gr_init( SM_320x200U );
- bmp.bm_data = NULL;
- pcx_read_bitmap( "big.pcx", &bmp, BM_LINEAR, palette );
- gr_palette_load( palette );
- key_init();
- x = y = 0;
- while(!keyd_pressed[KEY_ESC]) {
- y += keyd_pressed[KEY_UP] - keyd_pressed[KEY_DOWN];
- x += keyd_pressed[KEY_LEFT] - keyd_pressed[KEY_RIGHT];
- gr_bitmap( x, y, &bmp );
- }
- }
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