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#include <cmath>
#include "colorizer.h"
const int ColorSwitch::playerAngles[9] = { 0, 35, 67, 120, 170, 225, 270, 320, 0 };
// const int ColorSwitch::playerAngles[9] = { 0, 240, 55, 120, 298, 225, 240, 36, 0 };
const bool ColorSwitch::sat[9] = { true, true, true, true, true, true, true, true, false };
void ColorSwitch::generate()
{
delete cache;
cache = new Cache();
for ( int r = 0; r < 256; ++r )
for ( int g = 0; g < 256; ++g )
if ( g < r ) {
HSV hsv = rgb2hsv(r,g);
for ( int player = 0; player < 9; ++player ) {
if ( sat[player] == true )
cache->col[player][r][g] = hsv2rgb( HSV(playerAngles[player], hsv.s, hsv.v) );
else
cache->col[player][r][g] = hsv2rgb( HSV(playerAngles[player], 0, hsv.v) );
}
}
}
ColorSwitch::HSV ColorSwitch::rgb2hsv( int r, int g)
{
float max = float(r) / 255.0;
float min = float(g) / 255.0;
float delta = max - min;
HSV hsv;
hsv.s = int(ceil((delta / max) * 255));
hsv.v = r;
return hsv;
}
DI_Color ColorSwitch::hsv2rgb( HSV hsv)
{
float h = float(hsv.h) / 360;
float s = float(hsv.s) / 255;
float v = float(hsv.v) / 255;
if (hsv.s == 0) { // grey
return DI_Color(hsv.v, hsv.v, hsv.v);
} else {
float h2 = h * 6;
if (h2 >= 6)
h2 = 0; //muss kleiner als 1 sein
float var_i = floor(h2);
float var_1 = v * (1 - s);
float var_2 = v * (1 - s * (h2 - var_i));
float var_3 = v * (1 - s * (1 - (h2 - var_i)));
float var_r, var_g, var_b;
if ( var_i == 0) {
var_r = v;
var_g = var_3;
var_b = var_1;
} else if (var_i == 1) {
var_r = var_2;
var_g = v;
var_b = var_1;
} else if (var_i == 2) {
var_r = var_1;
var_g = v;
var_b = var_3;
} else if (var_i == 3) {
var_r = var_1;
var_g = var_2;
var_b = v;
} else if (var_i == 4) {
var_r = var_3;
var_g = var_1;
var_b = v;
} else {
var_r = v;
var_g = var_1;
var_b = var_2;
}
return DI_Color( int( ceil( var_r * 255 )),
int( ceil( var_g * 255 )),
int( ceil( var_b * 255 )));
}
}
ColorSwitch::ColorSwitch() : cache(NULL)
{
}
/*
DI_Color ColorSwitch::switchC( int player, int r, int g, int b)
{
if ( g == b && r > g) {
if ( !cache )
generate();
return cache->col[player][r][g];
} else {
return DI_Color(r,g,b);
}
}
*/
ColorSwitch colorSwitch;
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