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Usage

#include <stdio.h>
#include "mixbox.h"

int main() {
  unsigned char r1 =   0, g1 = 33,  b1 = 133; // blue
  unsigned char r2 = 252, g2 = 211, b2 = 0;   // yellow
  float t = 0.5;
  unsigned char r, g, b;

  mixbox_lerp(r1, g1, b1,  // first color
              r2, g2, b2,  // second color
              t,           // mixing ratio
              &r, &g, &b); // result

  printf("%d %d %d\n", r, g, b);
}

Mixing Multiple Colors

mixbox_latent z1, z2, z3, z_mix;

mixbox_rgb_to_latent(r1, g1, b1, z1);
mixbox_rgb_to_latent(r2, g2, b2, z2);
mixbox_rgb_to_latent(r3, g3, b3, z3);

for (int i = 0; i < MIXBOX_LATENT_SIZE; i++) {
  // mix 30% of rgb1, 60% of rgb2, and 10% of rgb3
  z_mix[i] = 0.3f*z1[i] + 0.6f*z2[i] + 0.1f*z3[i];
}

mixbox_latent_to_rgb(z_mix, &r, &g, &b);

Pigment Colors

Pigment RGB Float RGB Linear RGB
Cadmium Yellow 254, 236, 0 0.996, 0.925, 0.0 0.991, 0.839, 0.0
Hansa Yellow 252, 211, 0 0.988, 0.827, 0.0 0.973, 0.651, 0.0
Cadmium Orange 255, 105, 0 1.0, 0.412, 0.0 1.0, 0.141, 0.0
Cadmium Red 255, 39, 2 1.0, 0.153, 0.008 1.0, 0.02, 0.001
Quinacridone Magenta 128, 2, 46 0.502, 0.008, 0.18 0.216, 0.001, 0.027
Cobalt Violet 78, 0, 66 0.306, 0.0, 0.259 0.076, 0.0, 0.054
Ultramarine Blue 25, 0, 89 0.098, 0.0, 0.349 0.01, 0.0, 0.1
Cobalt Blue 0, 33, 133 0.0, 0.129, 0.522 0.0, 0.015, 0.235
Phthalo Blue 13, 27, 68 0.051, 0.106, 0.267 0.004, 0.011, 0.058
Phthalo Green 0, 60, 50 0.0, 0.235, 0.196 0.0, 0.045, 0.032
Permanent Green 7, 109, 22 0.027, 0.427, 0.086 0.002, 0.153, 0.008
Sap Green 107, 148, 4 0.42, 0.58, 0.016 0.147, 0.296, 0.001
Burnt Sienna 123, 72, 0 0.482, 0.282, 0.0 0.198, 0.065, 0.0

License

Copyright (c) 2022, Secret Weapons. All rights reserved.
Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.
If you want to obtain commercial license, please contact: [email protected]