1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/common/color.cpp	Thu Oct 23 01:46:07 2014 +0300
     1.3 @@ -0,0 +1,125 @@
     1.4 +#include <cmath>
     1.5 +#include "color.h"
     1.6 +
     1.7 +template <class T>
     1.8 +const T &clamp(const T &val, const T &low, const T &high) {
     1.9 +	if(val > high) return high;
    1.10 +	if(val < low) return low;
    1.11 +	return val;
    1.12 +}
    1.13 +
    1.14 +Color::Color(float_t intensity) {
    1.15 +	r = g = b = clamp<float_t>(intensity, 0.0f, 1.0f);
    1.16 +	a = 1.0f;
    1.17 +}
    1.18 +
    1.19 +Color::Color(float_t r, float_t g, float_t b, float_t a) {
    1.20 +	this->r = clamp<float_t>(r, 0.0f, 1.0f);
    1.21 +	this->g = clamp<float_t>(g, 0.0f, 1.0f);
    1.22 +	this->b = clamp<float_t>(b, 0.0f, 1.0f);
    1.23 +	this->a = clamp<float_t>(a, 0.0f, 1.0f);
    1.24 +}
    1.25 +
    1.26 +Color::Color(unsigned int r, unsigned int g, unsigned int b, unsigned int a) {
    1.27 +	this->r = (float_t)clamp<unsigned int>(r, 0, 255) / 255.0f;
    1.28 +	this->g = (float_t)clamp<unsigned int>(g, 0, 255) / 255.0f;
    1.29 +	this->b = (float_t)clamp<unsigned int>(b, 0, 255) / 255.0f;
    1.30 +	this->a = (float_t)clamp<unsigned int>(a, 0, 255) / 255.0f;
    1.31 +}
    1.32 +
    1.33 +Color::Color(int r, int g, int b, int a) {
    1.34 +	this->r = (float_t)clamp<int>(r, 0, 255) / 255.0f;
    1.35 +	this->g = (float_t)clamp<int>(g, 0, 255) / 255.0f;
    1.36 +	this->b = (float_t)clamp<int>(b, 0, 255) / 255.0f;
    1.37 +	this->a = (float_t)clamp<int>(a, 0, 255) / 255.0f;
    1.38 +}
    1.39 +
    1.40 +Color::Color(long pcol) {
    1.41 +	a = (float_t)(((dword)pcol >> 24) & 0xff) / 255.0f;
    1.42 +	r = (float_t)(((dword)pcol >> 16) & 0xff) / 255.0f;
    1.43 +	g = (float_t)(((dword)pcol >> 8) & 0xff) / 255.0f;
    1.44 +	b = (float_t)((dword)pcol & 0xff) / 255.0f;
    1.45 +}
    1.46 +
    1.47 +Color::Color(dword pcol) {
    1.48 +	a = (float_t)((pcol >> 24) & 0xff) / 255.0f;
    1.49 +	r = (float_t)((pcol >> 16) & 0xff) / 255.0f;
    1.50 +	g = (float_t)((pcol >> 8) & 0xff) / 255.0f;
    1.51 +	b = (float_t)(pcol & 0xff) / 255.0f;
    1.52 +}
    1.53 +
    1.54 +dword Color::GetPacked32() const {
    1.55 +	return	(((dword)(a * 255.0f) << 24) & 0xff000000) | 
    1.56 +			(((dword)(r * 255.0f) << 16) & 0x00ff0000) | 
    1.57 +			(((dword)(g * 255.0f) << 8) & 0x0000ff00) | 
    1.58 +			((dword)(b * 255.0f) & 0x000000ff);
    1.59 +}
    1.60 +
    1.61 +word Color::GetPacked16() const {
    1.62 +	return (word)(r * 32.0f) << 11 | (word)(g * 64.0f) << 5 | (word)(b * 32.0f);
    1.63 +}
    1.64 +
    1.65 +word Color::GetPacked15() const {
    1.66 +	return (word)a << 15 | (word)(r * 32.0f) << 10 | (word)(g * 32.0f) << 5 | (word)(b * 32.0f);
    1.67 +}
    1.68 +
    1.69 +#ifndef HalfPi
    1.70 +const float_t HalfPi = 1.5707963268f;
    1.71 +#endif	// HalfPi
    1.72 +
    1.73 +byte Color::GetNearest8(const byte **pal) const {
    1.74 +	float_t Score[256];
    1.75 +	for(int i=0; i<256; i++) {
    1.76 +		Color palcol = Color(pal[i][0], pal[i][1], pal[i][2]);
    1.77 +		float_t NearR = (float_t)cos(fabs(r - palcol.r) * HalfPi);
    1.78 +		float_t NearG = (float_t)cos(fabs(g - palcol.g) * HalfPi);
    1.79 +		float_t NearB = (float_t)cos(fabs(b - palcol.b) * HalfPi);
    1.80 +		Score[i] = NearR + NearG + NearB;
    1.81 +	}
    1.82 +
    1.83 +	int nearest = 0;
    1.84 +	for(int i=0; i<256; i++) {
    1.85 +		if(Score[i] > Score[nearest]) nearest = i;
    1.86 +	}
    1.87 +	return nearest;
    1.88 +}
    1.89 +
    1.90 +Color Color::operator +(const Color &col) const {
    1.91 +	return Color(r + col.r, g + col.g, b + col.b, a + col.a);
    1.92 +}
    1.93 +
    1.94 +Color Color::operator -(const Color &col) const {
    1.95 +	return Color(r - col.r, g - col.g, b - col.b, a - col.a);
    1.96 +}
    1.97 +
    1.98 +Color Color::operator *(const Color &col) const {
    1.99 +	return Color(r * col.r, g * col.g, b * col.b, a * col.a);
   1.100 +}
   1.101 +	
   1.102 +Color Color::operator *(float_t scalar) const {
   1.103 +	return Color(r * scalar, g * scalar, b * scalar, a);
   1.104 +}
   1.105 +
   1.106 +
   1.107 +void Color::operator +=(const Color &col) {
   1.108 +	*this = Color(r + col.r, g + col.g, b + col.b, a + col.a);
   1.109 +}
   1.110 +
   1.111 +void Color::operator -=(const Color &col) {
   1.112 +	*this = Color(r - col.r, g - col.g, b - col.b, a - col.a);
   1.113 +}
   1.114 +
   1.115 +void Color::operator *=(const Color &col) {
   1.116 +	*this = Color(r * col.r, g * col.g, b * col.b, a * col.a);
   1.117 +}
   1.118 +
   1.119 +void Color::operator *=(float_t scalar) {
   1.120 +	*this = Color(r * scalar, g * scalar, b * scalar, a);
   1.121 +}
   1.122 +
   1.123 +Color BlendColors(const Color &c1, const Color &c2, float_t t) {
   1.124 +	float_t r = c1.r + (c2.r - c1.r) * t;
   1.125 +	float_t g = c1.g + (c2.g - c1.g) * t;
   1.126 +	float_t b = c1.b + (c2.b - c1.b) * t;
   1.127 +	return Color(r, g, b);
   1.128 +}