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/**
*
* This file is part of Tulip (www.tulip-software.org)
*
* Authors: David Auber and the Tulip development Team
* from LaBRI, University of Bordeaux
*
* Tulip is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* Tulip is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
*/
#include "LinearMappingColor.h"
/*static void HSVtoRGB( float *r, float *g, float *b, float h, float s, float v ) {
int i;
float f, p, q, t;
if( s == 0 ) { // achromatic (grey)
*r = *g = *b = v;
return;
}
h /= 60; // sector 0 to 5
i = (int)floor( h );
f = h - (float)i; // factorial part of h
p = v * ( 1 - s );
q = v * ( 1 - s * f );
t = v * ( 1 - s * ( 1 - f ) );
switch( i ) {
case 0:
*r = v;
*g = t;
*b = p;
break;
case 1:
*r = q;
*g = v;
*b = p;
break;
case 2:
*r = p;
*g = v;
*b = t;
break;
case 3:
*r = p;
*g = q;
*b = v;
break;
case 4:
*r = t;
*g = p;
*b = v;
break;
default: // case 5:
*r = v;
*g = p;
*b = q;
break;
}
}*/
namespace pocore {
LinearMappingColor::LinearMappingColor(const double &min, const double &max) :
_min(min),
_max(max) {
startColor[0] = 255;
startColor[1] = 255;
startColor[2] = 0;
endColor[0] = 0;
endColor[1] = 0;
endColor[2] = 255;
}
RGBA LinearMappingColor::getColor(const double &value, unsigned int) const {
double ratio = (value - _min) / (_max - _min);
RGBA color;
for (unsigned int i = 0; i<3 ; ++i) {
color[i] = (unsigned char)(double(startColor[i]) + (double(endColor[i]) - double(startColor[i])) * ratio);
}
color[3] = 255;
return color;
}
}
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