home *** CD-ROM | disk | FTP | other *** search
- /** loadmap.c **/
-
-
- #include <stdio.h>
- #include <stdlib.h>
- #ifndef XFRACT
- #include <dos.h>
- #endif
- #include <string.h>
- #include "fractint.h"
- #include "prototyp.h"
-
- /***************************************************************************/
-
- #define dac ((Palettetype *)dacbox)
-
- void SetTgaColors() {
- unsigned r, g, b, index;
- if (tga16 != NULL)
- for( index = 0; index < 256; index++ ) {
- r = dac[index].red << 2;
- g = dac[index].green << 2;
- b = dac[index].blue << 2;
- tga16[index] = ((r&248)<<7) | ((g&248)<<2) | (b>>3);
- tga32[index] = ((long)r<<16) | (g<<8) | b;
- }
- }
-
- int ValidateLuts( char * fn )
- {
- FILE * f;
- unsigned r, g, b, index;
- char line[160];
- char temp[81];
- strcpy(temp,MAP_name);
- merge_pathnames(temp,fn,0);
- if (has_ext(temp) == NULL) /* Did name have an extension? */
- strcat(temp,".map"); /* No? Then add .map */
- findpath( temp, line); /* search the dos path */
- f = fopen( line, "r" );
- if (f == NULL) {
- sprintf(line,"Could not load color map %s",fn);
- stopmsg(0,line);
- return 1;
- }
- for( index = 0; index < 256; index++ ) {
- if (fgets(line,100,f) == NULL)
- break;
- sscanf( line, "%u %u %u", &r, &g, &b );
- /** load global dac values **/
- dac[index].red = (BYTE)((r%256) >> 2);/* maps default to 8 bits */
- dac[index].green = (BYTE)((g%256) >> 2);/* DAC wants 6 bits */
- dac[index].blue = (BYTE)((b%256) >> 2);
- }
- fclose( f );
- while (index < 256) { /* zap unset entries */
- dac[index].red = dac[index].blue = dac[index].green = 40;
- ++index;
- }
- SetTgaColors();
- colorstate = 2;
- strcpy(colorfile,fn);
- return 0;
- }
-
-
- /***************************************************************************/
-
- int SetColorPaletteName( char * fn )
- {
- if( ValidateLuts( fn ) != 0)
- return 1;
- if( mapdacbox == NULL && (mapdacbox = farmemalloc(768L)) == NULL) {
- static FCODE o_msg[]={"Insufficient memory for color map."};
- char msg[sizeof(o_msg)];
- far_strcpy(msg,o_msg);
- stopmsg(0,msg);
- return 1;
- }
- far_memcpy((char far *)mapdacbox,(char far *)dacbox,768);
- /* PB, 900829, removed atexit(RestoreMap) stuff, goodbye covers it */
- return 0;
- }
-
-