Apple-2-SW/dos33fsprogs
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second: more code commenting

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This commit is contained in:
Vince Weaver 2023-10-04 15:04:07 -04:00
parent 089ed1c103
commit 6e36d12be4
1 changed files with 9 additions and 2 deletions
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11
demos/second/part18_3d/auto/box_convert.c
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@ -883,18 +883,25 @@ int main(int argc, char **argv) {
exit(1);
}
/* convert "packed" lo-res data to easier to use 40x48 array */
/* (on Apple II two rows of colors are combined in hi/lo nybble) */
for(row=0;row<24;row++) {
for(col=0;col<40;col++) {
/* get packed color */
pixel=(image[row*40+col]);
/* Update histogram data */
color_lookup[pixel&0xf].count++;
color_lookup[(pixel>>4)&0xf].count++;
/* unpack color */
framebuffer[col][row*2]=pixel&0xf;
framebuffer[col][(row*2)+1]=(pixel>>4)&0xf;
}
}
/* save copy of framebuffer data as getting boxes is destructive */
memcpy(framebuffer_saved,framebuffer,40*48*sizeof(int));
/* sort histogram data */
qsort(&(color_lookup[1]),15,
sizeof(struct color_lookup_t),compare_color);
@ -903,11 +910,11 @@ int main(int argc, char **argv) {
// printf("; $%02X %s: %d\n",color_lookup[i].color,color_names[color_lookup[i].color],color_lookup[i].count);
// }
/* backup color data as well */
memcpy(color_backup,color_lookup,16*sizeof(struct color_lookup_t));
int result;
minimal_size=2096;
minimal_size=4096;
for(i=0;i<24;i++) {
permute_colors(i);
result=generate_frame(0);