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91 lines
3.9 KiB
Markdown
91 lines
3.9 KiB
Markdown
# Mixbox for Godot
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```gdscript
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var Mixbox = preload("res://addons/mixbox/mixbox.gd")
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var color1 = Color(0.0, 0.129, 0.522) # blue
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var color2 = Color(0.988, 0.827, 0.0) # yellow
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var t = 0.5 # mixing ratio
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var color_mix = Mixbox.lerp(color1, color2, t)
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print(color_mix)
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```
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## Mixing Multiple Colors
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```gdscript
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var z1 = Mixbox.rgb_to_latent(color1)
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var z2 = Mixbox.rgb_to_latent(color2)
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var z3 = Mixbox.rgb_to_latent(color3)
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var z_mix = []
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z_mix.resize(Mixbox.LATENT_SIZE)
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for i in z_mix.size(): # mix together:
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z_mix[i] = (0.3*z1[i] + # 30% of color1
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0.6*z2[i] + # 60% of color2
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0.1*z3[i]) # 10% of color3
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var color_mix = Mixbox.latent_to_rgb(z_mix)
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```
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# Shader
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```c++
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shader_type canvas_item;
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uniform sampler2D mixbox_lut; // attach "addons/mixbox/mixbox_lut.png" here
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uniform vec4 color1 : hint_color = vec4(0.0, 0.129, 0.522, 1.0); // blue
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uniform vec4 color2 : hint_color = vec4(0.988, 0.827, 0.0, 1.0); // yellow
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// #include only works in Godot 4, if you are on Godot 3.X
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// you will need to paste the Mixbox code here manually.
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#include "addons/mixbox/mixbox.gdshaderinc"
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void fragment() {
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COLOR = mixbox_lerp(color1, color2, UV.x);
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}
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```
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<p align="center">
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<img src="https://scrtwpns.com/mixbox/godot/mixboxlut-howto.png"/>
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</p>
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## Mixing Multiple Colors
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```glsl
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mat3 z1 = mixbox_rgb_to_latent(color1.rgb);
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mat3 z2 = mixbox_rgb_to_latent(color2.rgb);
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mat3 z3 = mixbox_rgb_to_latent(color3.rgb);
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// mix together 30% of color1, 60% of color2, and 10% of color3
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mat3 z_mix = 0.3*z1 + 0.6*z2 + 0.1*z3;
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vec3 rgb_mix = mixbox_latent_to_rgb(z_mix);
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```
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# VisualShader
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<p align="center">
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<img src="https://scrtwpns.com/mixbox/godot/visualshader_.png"/>
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</p>
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## Pigment Colors
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| Pigment | | RGB | Float RGB | Linear RGB |
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| --- | --- |:----:|:----:|:----:|
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| Cadmium Yellow | <img src="https://scrtwpns.com/mixbox/pigments/cadmium_yellow.png"/> | 254, 236, 0 | 0.996, 0.925, 0.0 | 0.991, 0.839, 0.0 |
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| Hansa Yellow | <img src="https://scrtwpns.com/mixbox/pigments/hansa_yellow.png"/> | 252, 211, 0 | 0.988, 0.827, 0.0 | 0.973, 0.651, 0.0 |
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| Cadmium Orange | <img src="https://scrtwpns.com/mixbox/pigments/cadmium_orange.png"/> | 255, 105, 0 | 1.0, 0.412, 0.0 | 1.0, 0.141, 0.0 |
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| Cadmium Red | <img src="https://scrtwpns.com/mixbox/pigments/cadmium_red.png"/> | 255, 39, 2 | 1.0, 0.153, 0.008 | 1.0, 0.02, 0.001 |
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| Quinacridone Magenta | <img src="https://scrtwpns.com/mixbox/pigments/quinacridone_magenta.png"/> | 128, 2, 46 | 0.502, 0.008, 0.18 | 0.216, 0.001, 0.027 |
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| Cobalt Violet | <img src="https://scrtwpns.com/mixbox/pigments/cobalt_violet.png"/> | 78, 0, 66 | 0.306, 0.0, 0.259 | 0.076, 0.0, 0.054 |
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| Ultramarine Blue | <img src="https://scrtwpns.com/mixbox/pigments/ultramarine_blue.png"/> | 25, 0, 89 | 0.098, 0.0, 0.349 | 0.01, 0.0, 0.1 |
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| Cobalt Blue | <img src="https://scrtwpns.com/mixbox/pigments/cobalt_blue.png"/> | 0, 33, 133 | 0.0, 0.129, 0.522 | 0.0, 0.015, 0.235 |
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| Phthalo Blue | <img src="https://scrtwpns.com/mixbox/pigments/phthalo_blue.png"/> | 13, 27, 68 | 0.051, 0.106, 0.267 | 0.004, 0.011, 0.058 |
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| Phthalo Green | <img src="https://scrtwpns.com/mixbox/pigments/phthalo_green.png"/> | 0, 60, 50 | 0.0, 0.235, 0.196 | 0.0, 0.045, 0.032 |
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| Permanent Green | <img src="https://scrtwpns.com/mixbox/pigments/permanent_green.png"/> | 7, 109, 22 | 0.027, 0.427, 0.086 | 0.002, 0.153, 0.008 |
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| Sap Green | <img src="https://scrtwpns.com/mixbox/pigments/sap_green.png"/> | 107, 148, 4 | 0.42, 0.58, 0.016 | 0.147, 0.296, 0.001 |
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| Burnt Sienna | <img src="https://scrtwpns.com/mixbox/pigments/burnt_sienna.png"/> | 123, 72, 0 | 0.482, 0.282, 0.0 | 0.198, 0.065, 0.0 |
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## License
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Copyright (c) 2022, Secret Weapons. All rights reserved.<br>
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Mixbox is provided under the CC BY-NC 4.0 license for non-commercial use only.<br>
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If you want to obtain commercial license, please contact: mixbox@scrtwpns.com
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