199 lines
4.5 KiB
C++
199 lines
4.5 KiB
C++
#define COLOR_INLINE_CPP
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#ifndef NDEBUG
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#include <cmath>
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#include <cassert>
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#endif
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#ifdef COLOR_H
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# define METHSPEC inline
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#else
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# include "Color.h"
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# define METHSPEC
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#endif
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METHSPEC Color::Color(double r, double g, double b, double a):
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r(r), g(g), b(b), a(a)
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{
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}
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METHSPEC Color::Color(const Color &col):
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r(col.r), g(col.g), b(col.b), a(col.a)
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{
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}
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METHSPEC unsigned int Color::to32BitRGBA() const
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{
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return (((unsigned int) (a * 255.0)) << 24) | (((unsigned int) (b * 255.0)) << 16) | (((unsigned int) (g * 255.0)) << 8) | ((unsigned int) (r * 255.0));
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}
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METHSPEC unsigned int Color::to32BitBGRA() const
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{
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return (((unsigned int) (a * 255.0)) << 24) | (((unsigned int) (r * 255.0)) << 16) | (((unsigned int) (g * 255.0)) << 8) | ((unsigned int) (b * 255.0));
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}
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METHSPEC unsigned int Color::to32BitARGB() const
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{
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return (((unsigned int) (b * 255.0)) << 24) | (((unsigned int) (g * 255.0)) << 16) | (((unsigned int) (r * 255.0)) << 8) | ((unsigned int) (a * 255.0));
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}
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METHSPEC unsigned int Color::to32BitABGR() const
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{
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return (((unsigned int) (r * 255.0)) << 24) | (((unsigned int) (g * 255.0)) << 16) | (((unsigned int) (b * 255.0)) << 8) | ((unsigned int) (a * 255.0));
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}
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METHSPEC Color Color::from32BitRGBA(unsigned int col)
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{
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return Color(
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((double) (col & 0x000000FF)) / 255.0,
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((double) ((col & 0x0000FF00) >> 8)) / 255.0,
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((double) ((col & 0x00FF0000) >> 16)) / 255.0,
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((double) ((col & 0xFF000000) >> 24)) / 255.0
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);
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}
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METHSPEC Color Color::from32BitBGRA(unsigned int col)
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{
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return Color(
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((double) (col & 0x000000FF)) / 255.0,
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((double) ((col & 0x0000FF00) >> 8)) / 255.0,
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((double) ((col & 0x00FF0000) >> 16)) / 255.0,
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((double) ((col & 0xFF000000) >> 24)) / 255.0
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);
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}
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METHSPEC Color Color::from32BitARGB(unsigned int col)
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{
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return Color(
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((double) (col & 0x000000FF)) / 255.0,
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((double) ((col & 0x0000FF00) >> 8)) / 255.0,
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((double) ((col & 0x00FF0000) >> 16)) / 255.0,
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((double) ((col & 0xFF000000) >> 24)) / 255.0
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);
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}
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METHSPEC Color Color::from32BitABGR(unsigned int col)
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{
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return Color(
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((double) (col & 0x000000FF)) / 255.0,
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((double) ((col & 0x0000FF00) >> 8)) / 255.0,
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((double) ((col & 0x00FF0000) >> 16)) / 255.0,
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((double) ((col & 0xFF000000) >> 24)) / 255.0
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);
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}
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METHSPEC void Color::mask(const Color& mask)
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{
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double new_a;
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new_a = a + mask.a - (a * mask.a);
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r = (mask.r * mask.a + r * a - r * a * mask.a) / new_a;
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g = (mask.g * mask.a + g * a - g * a * mask.a) / new_a;
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b = (mask.b * mask.a + b * a - b * a * mask.a) / new_a;
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a = new_a;
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/*double mask_weight = mask->a;
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double base_weight = 1.0 - mask_weight;
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base->r = mask->r * mask_weight + base->r * base_weight;
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base->g = mask->g * mask_weight + base->g * base_weight;
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base->b = mask->b * mask_weight + base->b * base_weight;
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base->a = base->a + mask_weight * (1.0 - base->a);*/
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}
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METHSPEC double Color::normalize()
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{
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#ifndef NDEBUG
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assert(r >= 0.0);
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assert(g >= 0.0);
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assert(b >= 0.0);
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assert(a >= 0.0);
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#ifdef isnan
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assert(!isnan(r));
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assert(!isnan(g));
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assert(!isnan(b));
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assert(!isnan(a));
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#endif
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#ifdef isfinite
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assert(isfinite(r));
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assert(isfinite(g));
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assert(isfinite(b));
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assert(isfinite(a));
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#endif
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#endif
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if (r > 1.0)
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{
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r = 1.0;
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}
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if (g > 1.0)
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{
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g = 1.0;
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}
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if (b > 1.0)
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{
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b = 1.0;
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}
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return 1.0;
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/*double max = colorGetValue(col);
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assert(max >= 0.0);
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if (max > 1.0)
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{
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col->r /= max;
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col->g /= max;
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col->b /= max;
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}
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return max;*/
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}
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METHSPEC double Color::getValue() const
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{
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double max;
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max = r;
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if (g > max)
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{
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max = g;
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}
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if (b > max)
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{
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max = b;
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}
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return max;
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}
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METHSPEC double Color::getPower() const
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{
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return r + g + b;
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}
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METHSPEC void Color::limitPower(double max_power)
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{
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double power = r + g + b;
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if (power > max_power)
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{
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double factor = max_power / power;
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r *= factor;
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g *= factor;
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b *= factor;
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}
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}
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METHSPEC Color Color::add(const Color& other) const
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{
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return Color(r + other.r, g + other.g, b + other.b, a);
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}
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METHSPEC Color Color::lerp(const Color& other, double f) const
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{
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Color result(
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r * (1.0 - f) + other.r * f,
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g * (1.0 - f) + other.g * f,
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b * (1.0 - f) + other.b * f,
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a * (1.0 - f) + other.a * f
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);
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return result;
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}
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