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VC Term: Iterate over smaller steps instead of doubling over the horizontal axis #24

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VC Term: Iterate over smaller steps instead of doubling over the horizontal axis #24

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10 changes: 7 additions & 3 deletions demos/vc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -469,6 +469,10 @@ static uint32_t vc_term_compress_pixels_chunk(Olivec_Canvas oc)
#define VC_TERM_SCALE_DOWN_FACTOR 20
#endif // VC_TERM_SCALE_DOWN_FACTOR

#ifndef VC_TERM_ASPECT_RATIO
#define VC_TERM_ASPECT_RATIO 2
#endif // VC_TERM_ASPECT_RATIO

static void vc_term_resize_char_canvas(size_t new_width, size_t new_height)
{
// TODO: warn the user if vc_term_actual_width does not fit into the screen
Expand All @@ -479,7 +483,7 @@ static void vc_term_resize_char_canvas(size_t new_width, size_t new_height)
assert(new_height%VC_TERM_SCALE_DOWN_FACTOR == 0 && "Height must be divisible by VC_TERM_SCALE_DOWN_FACTOR");
vc_term_actual_width = new_width;
vc_term_actual_height = new_height;
vc_term_scaled_down_width = vc_term_actual_width/VC_TERM_SCALE_DOWN_FACTOR;
vc_term_scaled_down_width = (vc_term_actual_width*VC_TERM_ASPECT_RATIO)/VC_TERM_SCALE_DOWN_FACTOR;
vc_term_scaled_down_height = vc_term_actual_height/VC_TERM_SCALE_DOWN_FACTOR;
free(vc_term_char_canvas);
vc_term_char_canvas = malloc(sizeof(*vc_term_char_canvas)*vc_term_scaled_down_width*vc_term_scaled_down_height);
Expand Down Expand Up @@ -525,7 +529,7 @@ static void vc_term_compress_pixels(Olivec_Canvas oc)

for (size_t y = 0; y < vc_term_scaled_down_height; ++y) {
for (size_t x = 0; x < vc_term_scaled_down_width; ++x) {
Olivec_Canvas soc = olivec_subcanvas(oc, x*VC_TERM_SCALE_DOWN_FACTOR, y*VC_TERM_SCALE_DOWN_FACTOR, VC_TERM_SCALE_DOWN_FACTOR, VC_TERM_SCALE_DOWN_FACTOR);
Olivec_Canvas soc = olivec_subcanvas(oc, x*VC_TERM_SCALE_DOWN_FACTOR/VC_TERM_ASPECT_RATIO, y*VC_TERM_SCALE_DOWN_FACTOR, VC_TERM_SCALE_DOWN_FACTOR/VC_TERM_ASPECT_RATIO, VC_TERM_SCALE_DOWN_FACTOR);
uint32_t cp = vc_term_compress_pixels_chunk(soc);
int r = OLIVEC_RED(cp);
int g = OLIVEC_GREEN(cp);
Expand All @@ -548,7 +552,7 @@ int main(void)
for (size_t y = 0; y < vc_term_scaled_down_height; ++y) {
for (size_t x = 0; x < vc_term_scaled_down_width; ++x) {
// TODO: explore the idea of figuring out aspect ratio of the character using escape ANSI codes of the terminal and rendering the image accordingly
printf("\033[48;5;%dm ", vc_term_char_canvas[y*vc_term_scaled_down_width + x]);
printf("\033[48;5;%dm ", vc_term_char_canvas[y*vc_term_scaled_down_width + x]);
}
printf("\033[0m\n");
}
Expand Down