#include <cstring></cstring>

#include "tcolorfunctions.h"

#include "tpixelutils.h"

TPixel32 TColorFader::operator()(const TPixel32 &color) const

{

	TPixel32 ret = blend(color, m_color, m_fade);

	return ret;

}

bool TColorFader::getParameters(Parameters &p) const

{

	p.m_mR = p.m_mG = p.m_mB = p.m_mM = (1 - m_fade);

	p.m_cR = m_fade * m_color.r;

	p.m_cG = m_fade * m_color.g;

	p.m_cB = m_fade * m_color.b;

	p.m_cM = m_fade * m_color.m;

	return true;

}

//---------------------------------------

TGenericColorFunction::TGenericColorFunction(const double m[4], const double c[4])

{

	memcpy(m_m, m, 4 * sizeof(double));

	memcpy(m_c, c, 4 * sizeof(double));

}

//---------------------------------------

TPixel32 TGenericColorFunction::operator()(const TPixel32 &color) const

{

	return TPixel32(tcrop(m_m[0] * color.r + m_c[0], 0.0, 255.0),

					tcrop(m_m[1] * color.g + m_c[1], 0.0, 255.0),

					tcrop(m_m[2] * color.b + m_c[2], 0.0, 255.0),

					tcrop(m_m[3] * color.m + m_c[3], 0.0, 255.0));

}

//---------------------------------------

bool TGenericColorFunction::getParameters(Parameters &p) const

{

	p.m_mR = m_m[0], p.m_mG = m_m[1], p.m_mB = m_m[2], p.m_mM = m_m[3];

	p.m_cR = m_c[0], p.m_cG = m_c[1], p.m_cB = m_c[2], p.m_cM = m_c[3];

	return true;

}

//---------------------------------------

TPixel32 TTranspFader::operator()(const TPixel32 &color) const

{

	return TPixel32(color.r, color.g, color.b, m_transp * color.m);

}

//---------------------------------------

bool TTranspFader::getParameters(Parameters &p) const

{

	assert(false);

	return true;

}

//----------------------------------

TPixel32 TOnionFader::operator()(const TPixel32 &color) const

{

	if (color.m == 0)

		return color;

	TPixel32 blendColor = blend(color, m_color, m_fade);

	blendColor.m = 180;

	return blendColor;

}

bool TOnionFader::getParameters(Parameters &p) const

{

	p.m_mR = p.m_mG = p.m_mB = (1 - m_fade);

	p.m_mM = 1;

	p.m_cR = m_fade * m_color.r;

	p.m_cG = m_fade * m_color.g;

	p.m_cB = m_fade * m_color.b;

	p.m_cM = m_color.m;

	return true;

}