SowinskiBraeden/image-processing
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cycle colors

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SowinskiBraeden committed 2025-11-17 18:53:50 -08:00
1 parent a21c6c4d71
commit c193bc918f
2 files changed
+38 -37
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.gitignore
+1
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@@ -1,2 +1,3 @@
main.o
processing
stb_image.h
main.c
+37 -37
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@@ -141,16 +141,16 @@ int main(int argc, char *argv[])
uint8_t b;
uint8_t a;
r = (src >> 24) & 0xFF;
g = (src >> 16) & 0xFF;
b = (src >> 8) & 0xFF;
a = src & 0xFF;
// r = (src >> 24) & 0xFF;
// g = (src >> 16) & 0xFF;
// b = (src >> 8) & 0xFF;
// a = src & 0xFF;
uint8_t gray;
// uint8_t gray;
gray = (r + g + b) / 3;
// gray = (r + g + b) / 3;
pixels[i] = (gray << 24) | (gray << 16) | (gray << 8) | a;
// pixels[i] = (gray << 24) | (gray << 16) | (gray << 8) | a;
// uint32_t src;
// src = original_pixels[i];
@@ -160,41 +160,41 @@ int main(int argc, char *argv[])
// uint8_t b;
// uint8_t a;
// r = (src >> 24) & 0xFF;
// g = (src >> 16) & 0xFF;
// b = (src >> 8) & 0xFF;
// a = src & 0xFF;
r = (src >> 24) & 0xFF;
g = (src >> 16) & 0xFF;
b = (src >> 8) & 0xFF;
a = src & 0xFF;
// float mr; float mg; float mb;
float mr; float mg; float mb;
// if (seg == 0) // red → green
// {
// mr = 1.0f - t;
// mg = t;
// mb = 0.0f;
// }
// else if (seg == 1) // green → blue
// {
// mr = 0.0f;
// mg = 1.0f - t;
// mb = t;
// }
// else // blue → red
// {
// mr = t;
// mg = 0.0f;
// mb = 1.0f - t;
// }
if (seg == 0) // red → green
{
mr = 1.0f - t;
mg = t;
mb = 0.0f;
}
else if (seg == 1) // green → blue
{
mr = 0.0f;
mg = 1.0f - t;
mb = t;
}
else // blue → red
{
mr = t;
mg = 0.0f;
mb = 1.0f - t;
}
// uint8_t nr;
// uint8_t ng;
// uint8_t nb;
uint8_t nr;
uint8_t ng;
uint8_t nb;
// nr = (uint8_t)(r * mr);
// ng = (uint8_t)(g * mg);
// nb = (uint8_t)(b * mb);
nr = (uint8_t)(r * mr);
ng = (uint8_t)(g * mg);
nb = (uint8_t)(b * mb);
// pixels[i] = (nr << 24) | (ng << 16) | (nb << 8) | a;
pixels[i] = (nr << 24) | (ng << 16) | (nb << 8) | a;
}
SDL_UpdateTexture(texture, NULL, pixels, w * sizeof(uint32_t));