| #include "rive/shapes/paint/color.hpp" |
| #include <stdio.h> |
| |
| namespace rive { |
| unsigned int colorARGB(int a, int r, int g, int b) { |
| return (((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | ((b & 0xff) << 0)) & |
| 0xFFFFFFFF; |
| } |
| |
| unsigned int colorRed(ColorInt value) { return (0x00ff0000 & value) >> 16; } |
| |
| unsigned int colorGreen(ColorInt value) { return (0x0000ff00 & value) >> 8; } |
| |
| unsigned int colorBlue(ColorInt value) { return (0x000000ff & value) >> 0; } |
| |
| unsigned int colorAlpha(ColorInt value) { return (0xff000000 & value) >> 24; } |
| |
| float colorOpacity(ColorInt value) { return (float)colorAlpha(value) / 0xFF; } |
| |
| ColorInt colorWithAlpha(ColorInt value, unsigned int a) { |
| return colorARGB(a, colorRed(value), colorGreen(value), colorBlue(value)); |
| } |
| |
| ColorInt colorWithOpacity(ColorInt value, float opacity) { |
| return colorWithAlpha(value, std::round(255.0 * opacity)); |
| } |
| |
| ColorInt colorModulateOpacity(ColorInt value, float opacity) { |
| return colorWithAlpha(value, std::round(255.0f * colorOpacity(value) * opacity)); |
| } |
| |
| static unsigned int lerp(unsigned int a, unsigned int b, float mix) { |
| return a * (1.0f - mix) + b * mix; |
| } |
| |
| ColorInt colorLerp(ColorInt from, ColorInt to, float mix) { |
| return colorARGB(lerp(colorAlpha(from), colorAlpha(to), mix), |
| lerp(colorRed(from), colorRed(to), mix), |
| lerp(colorGreen(from), colorGreen(to), mix), |
| lerp(colorBlue(from), colorBlue(to), mix)); |
| } |
| } // namespace rive |