129 lines
1.8 KiB
C++
129 lines
1.8 KiB
C++
#ifndef COLOR_H
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#include "util.h"
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#include <cstdint>
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struct ColorU32
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{
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union
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{
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struct
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{
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uint8_t b, g, r, a;
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};
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uint32_t u32;
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};
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};
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struct ColorF32
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{
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float b, g, r, a;
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};
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// OPERATORS
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// c1 + c2
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inline ColorF32 operator+(ColorF32 c1, ColorF32 c2)
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{
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ColorF32 result;
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result.b = c1.b + c2.b;
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result.g = c1.g + c2.g;
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result.r = c1.r + c2.r;
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result.a = c1.a + c2.a;
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return result;
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}
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// c1 += c2
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inline ColorF32 &operator+=(ColorF32 &c1, ColorF32 c2)
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{
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c1 = c1 + c2;
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return c1;
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}
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// c * f
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inline ColorF32 operator*(ColorF32 c, float f)
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{
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ColorF32 result;
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result.b = f * c.b;
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result.g = f * c.g;
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result.r = f * c.r;
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result.a = f * c.a;
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return result;
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}
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// f * c
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inline ColorF32 operator*(float f, ColorF32 c)
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{
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ColorF32 result;
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result = c * f;
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return result;
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}
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// c1 * c2
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inline ColorF32 operator*(ColorF32 c1, ColorF32 c2)
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{
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ColorF32 result;
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result.b = c1.b * c2.b;
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result.g = c1.g * c2.g;
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result.r = c1.r * c2.r;
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result.a = c1.a * c2.a;
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return result;
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}
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// c / f
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inline ColorF32 operator/(ColorF32 c, float f)
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{
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ColorF32 result;
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float invF = 1.0f / f;
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result.b = c.b * invF;
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result.g = c.g * invF;
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result.r = c.r * invF;
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result.a = c.a * invF;
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return result;
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}
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// c /= f
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inline ColorF32 &operator/=(ColorF32 &c, float f)
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{
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c = c / f;
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return c;
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}
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inline void ScaleColor(ColorF32 &c)
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{
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float blue = MAX(c.b, 0.0f);
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float green = MAX(c.g, 0.0f);
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float red = MAX(c.r, 0.0f);
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float alpha = MAX(c.a, 0.0f);
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float max = MAX(MAX(MAX(blue,green),red),1.0f);
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ColorF32 scaled = {blue, green, red, alpha};
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scaled /= max;
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c.b = scaled.b;
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c.g = scaled.g;
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c.r = scaled.r;
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c.a = scaled.a;
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}
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#define COLOR_H
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#endif
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