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greg |
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/* Copyright (c) 1986 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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/* |
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* lookamb.c - program to examine ambient components. |
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* |
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* 10/8/86 |
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*/ |
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#include <stdio.h> |
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#include "color.h" |
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typedef double FVECT[3]; |
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typedef struct ambval { |
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FVECT pos; /* position in space */ |
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FVECT dir; /* normal direction */ |
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int lvl; /* recursion level of parent ray */ |
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float weight; /* weight of parent ray */ |
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COLOR val; /* computed ambient value */ |
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float rad; /* validity radius */ |
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struct ambval *next; /* next in list */ |
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} AMBVAL; /* ambient value */ |
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int dataonly = 0; |
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int reverse = 0; |
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AMBVAL av; |
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main(argc, argv) /* load ambient values from a file */ |
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char *argv[]; |
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{ |
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FILE *fp; |
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int i; |
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'd': |
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dataonly = 1; |
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break; |
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case 'r': |
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reverse = 1; |
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break; |
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default: |
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fprintf(stderr, "%s: unknown option '%s'\n", |
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argv[0], argv[i]); |
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return(1); |
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} |
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else |
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break; |
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if (i >= argc) |
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fp = stdin; |
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else if ((fp = fopen(argv[i], "r")) == NULL) { |
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fprintf(stderr, "%s: file not found\n", argv[i]); |
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return(1); |
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} |
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if (reverse) |
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writamb(fp); |
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else |
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lookamb(fp); |
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fclose(fp); |
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return(0); |
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} |
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lookamb(fp) /* get ambient values from a file */ |
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FILE *fp; |
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{ |
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while (fread(&av, sizeof(AMBVAL), 1, fp) == 1) { |
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if (dataonly) { |
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printf("%f\t%f\t%f\t", av.pos[0], av.pos[1], av.pos[2]); |
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printf("%f\t%f\t%f\t", av.dir[0], av.dir[1], av.dir[2]); |
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printf("%d\t%f\t%f\t", av.lvl, av.weight, av.rad); |
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printf("%e\t%e\t%e\n", colval(av.val,RED), |
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colval(av.val,GRN), |
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colval(av.val,BLU)); |
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} else { |
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printf("\nPosition:\t%f\t%f\t%f\n", av.pos[0], |
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av.pos[1], av.pos[2]); |
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printf("Direction:\t%f\t%f\t%f\n", av.dir[0], |
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av.dir[1], av.dir[2]); |
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printf("Lvl,Wt,Rad:\t%d\t\t%f\t%f\n", av.lvl, |
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av.weight, av.rad); |
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printf("Value:\t\t%e\t%e\t%e\n", colval(av.val,RED), |
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colval(av.val,GRN), colval(av.val,BLU)); |
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} |
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if (ferror(stdout)) |
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exit(1); |
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} |
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} |
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writamb(fp) /* write binary ambient values */ |
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FILE *fp; |
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{ |
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for ( ; ; ) { |
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if (!dataonly) |
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fscanf(fp, "%*s"); |
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if (fscanf(fp, "%lf %lf %lf", |
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&av.pos[0], &av.pos[1], &av.pos[2]) != 3) |
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return; |
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if (!dataonly) |
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fscanf(fp, "%*s"); |
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if (fscanf(fp, "%lf %lf %lf", |
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&av.dir[0], &av.dir[1], &av.dir[2]) != 3) |
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return; |
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if (!dataonly) |
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fscanf(fp, "%*s"); |
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if (fscanf(fp, "%d %f %f", |
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&av.lvl, &av.weight, &av.rad) != 3) |
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return; |
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if (!dataonly) |
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fscanf(fp, "%*s"); |
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if (fscanf(fp, "%f %f %f", |
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&av.val[RED], &av.val[GRN], &av.val[BLU]) != 3) |
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return; |
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fwrite(&av, sizeof(AMBVAL), 1, stdout); |
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if (ferror(stdout)) |
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exit(1); |
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} |
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} |
