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EasyAndFastMod/Colors.mqh

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2026-01-15 07:23:17 -05:00
<EFBFBD><EFBFBD>//+------------------------------------------------------------------+
//| Colors.mqh |
//| Copyright 2015, MetaQuotes Software Corp. |
//| http://www.mql5.com |
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+
//| ;0AA 4;O @01>BK A F25B>< |
//+------------------------------------------------------------------+
class CColors
{
private:
double Arctan2(const double x,const double y);
double Hue_To_RGB(double v1,double v2,double vH);
public:
CColors();
~CColors();
//--- !?8A>: DC=:F89 A A09B0 > http://www.easyrgb.com/index.php?X=MATH
// start of list <
void RGBtoXYZ(const double aR,const double aG,const double aB,double &oX,double &oY,double &oZ);
void XYZtoRGB(const double aX,const double aY,const double aZ,double &oR,double &oG,double &oB);
void XYZtoYxy(const double aX,const double aY,const double aZ,double &oY,double &ox,double &oy);
void YxyToXYZ(const double aY,const double ax,const double ay,double &oX,double &oY,double &oZ);
void XYZtoHunterLab(const double aX,const double aY,const double aZ,double &oL,double &oa,double &ob);
void HunterLabToXYZ(const double aL,const double aa,const double ab,double &oX,double &oY,double &oZ);
void XYZtoCIELab(const double aX,const double aY,const double aZ,double &oCIEL,double &oCIEa,double &oCIEb);
void CIELabToXYZ(const double aCIEL,const double aCIEa,const double aCIEb,double &oX,double &oY,double &oZ);
void CIELabToCIELCH(const double aCIEL,const double aCIEa,const double aCIEb,double &oCIEL,double &oCIEC,double &oCIEH);
void CIELCHtoCIELab(const double aCIEL,const double aCIEC,const double aCIEH,double &oCIEL,double &oCIEa,double &oCIEb);
void XYZtoCIELuv(const double aX,const double aY,const double aZ,double &oCIEL,double &oCIEu,double &oCIEv);
void CIELuvToXYZ(const double aCIEL,const double aCIEu,const double aCIEv,double &oX,double &oY,double &oZ);
void RGBtoHSL(const double aR,const double aG,const double aB,double &oH,double &oS,double &oL);
void HSLtoRGB(const double aH,const double aS,const double aL,double &oR,double &oG,double &oB);
void RGBtoHSV(const double aR,const double aG,const double aB,double &oH,double &oS,double &oV);
void HSVtoRGB(const double aH,const double aS,const double aV,double &oR,double &oG,double &oB);
void RGBtoCMY(const double aR,const double aG,const double aB,double &oC,double &oM,double &oY);
void CMYtoRGB(const double aC,const double aM,const double aY,double &oR,double &oG,double &oB);
void CMYtoCMYK(const double aC,const double aM,const double aY,double &oC,double &oM,double &oY,double &oK);
void CMYKtoCMY(const double aC,const double aM,const double aY,const double aK,double &oC,double &oM,double &oY);
//--- > end of list
//
void ColorToRGB(const color aColor,double &aR,double &aG,double &aB);
double GetR(const color aColor);
double GetG(const color aColor);
double GetB(const color aColor);
double GetA(const color aColor);
color RGBToColor(const double aR,const double aG,const double aB);
color MixColors(const color aCol1,const color aCol2,const double aK);
color BlendColors(const uint lower_color,const uint upper_color);
void Gradient(color &aColors[],color &aOut[],int aOutCount,bool aCycle=false);
void RGBtoXYZsimple(double aR,double aG,double aB,double &oX,double &oY,double &oZ);
void XYZtoRGBsimple(const double aX,const double aY,const double aZ,double &oR,double &oG,double &oB);
color Negative(const color aColor);
color StandardColor(const color aColor,int &aIndex);
double RGBtoGray(double aR,double aG,double aB);
double RGBtoGraySimple(double aR,double aG,double aB);
};
//+------------------------------------------------------------------+
//| Constructor |
//+------------------------------------------------------------------+
CColors::CColors(void)
{
}
//+------------------------------------------------------------------+
//| Destructor |
//+------------------------------------------------------------------+
CColors::~CColors(void)
{
}
//+------------------------------------------------------------------+
//| Arctan2 |
//+------------------------------------------------------------------+
double CColors::Arctan2(const double x,const double y)
{
if(y==0)
{
if(x<0)
return(M_PI);
//---
return(0);
}
else
{
if(x>0)
return(::MathArctan(y/x));
//---
if(x<0)
{
if(y>0)
return(::MathArctan(y/x)+M_PI);
//---
return(::MathArctan(y/x)-M_PI);
}
else
{
if(y<0)
return(-M_PI_2);
//---
return(M_PI_2);
}
}
}
//+------------------------------------------------------------------+
//| Hue_To_RGB |
//+------------------------------------------------------------------+
double CColors::Hue_To_RGB(double v1,double v2,double vH)
{
if(vH<0)
vH+=1.0;
if(vH>1.0)
vH-=1;
if((6.0*vH)<1.0)
return(v1+(v2-v1)*6.0*vH);
if((2.0*vH)<1.0)
return(v2);
if((3.0*vH)<2.0)
return(v1+(v2-v1)*((2.0/3.0)-vH)*6.0);
//---
return(v1);
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 RGB 2 XYZ |
//+------------------------------------------------------------------+
void CColors::RGBtoXYZ(const double aR,const double aG,const double aB,double &oX,double &oY,double &oZ)
{
double var_R=aR/255;
double var_G=aG/255;
double var_B=aB/255;
//---
if(var_R>0.04045)
var_R=::MathPow((var_R+0.055)/1.055,2.4);
else
var_R=var_R/12.92;
//---
if(var_G>0.04045)
var_G=::MathPow((var_G+0.055)/1.055,2.4);
else
var_G=var_G/12.92;
//---
if(var_B>0.04045)
var_B=::MathPow((var_B+0.055)/1.055,2.4);
else
var_B=var_B/12.92;
//---
var_R =var_R*100.0;
var_G =var_G*100.0;
var_B =var_B*100.0;
oX =var_R*0.4124+var_G*0.3576+var_B*0.1805;
oY =var_R*0.2126+var_G*0.7152+var_B*0.0722;
oZ =var_R*0.0193+var_G*0.1192+var_B*0.9505;
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 XYZ 2 RGB |
//+------------------------------------------------------------------+
void CColors::XYZtoRGB(const double aX,const double aY,const double aZ,double &oR,double &oG,double &oB)
{
double var_X =aX/100;
double var_Y =aY/100;
double var_Z =aZ/100;
double var_R =var_X*3.2406+var_Y*-1.5372+var_Z*-0.4986;
double var_G =var_X*(-0.9689)+var_Y*1.8758+var_Z*0.0415;
double var_B =var_X*0.0557+var_Y*(-0.2040)+var_Z*1.0570;
//---
if(var_R>0.0031308)
var_R=1.055*(::MathPow(var_R,1.0/2.4))-0.055;
else
var_R=12.92*var_R;
//---
if(var_G>0.0031308)
var_G=1.055*(::MathPow(var_G,1.0/2.4))-0.055;
else
var_G=12.92*var_G;
//---
if(var_B>0.0031308)
var_B=1.055*(::MathPow(var_B,1.0/2.4))-0.055;
else
var_B=12.92*var_B;
//---
oR =var_R*255.0;
oG =var_G*255.0;
oB =var_B*255.0;
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 XYZ 2 Yxy |
//+------------------------------------------------------------------+
void CColors::XYZtoYxy(const double aX,const double aY,const double aZ,double &oY,double &ox,double &oy)
{
oY =aY;
ox =aX/(aX+aY+aZ);
oy =aY/(aX+aY+aZ);
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 Yxy 2 XYZ |
//+------------------------------------------------------------------+
void CColors::YxyToXYZ(const double aY,const double ax,const double ay,double &oX,double &oY,double &oZ)
{
oX =ax*(aY/ay);
oY =aY;
oZ =(1.0-ax-ay)*(aY/ay);
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 XYZ 2 HunterLab |
//+------------------------------------------------------------------+
void CColors::XYZtoHunterLab(const double aX,const double aY,const double aZ,double &oL,double &oa,double &ob)
{
oL =10.0*::MathSqrt(aY);
oa =17.5*(((1.02*aX)-aY)/::MathSqrt(aY));
ob =7.0*((aY-(0.847*aZ))/::MathSqrt(aY));
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 HunterLab 2 XYZ |
//+------------------------------------------------------------------+
void CColors::HunterLabToXYZ(const double aL,const double aa,const double ab,double &oX,double &oY,double &oZ)
{
double var_Y =aL/10.0;
double var_X =aa/17.5*aL/10.0;
double var_Z =ab/7.0*aL/10.0;
//---
oY =::MathPow(var_Y,2);
oX =(var_X+oY)/1.02;
oZ =-(var_Z-oY)/0.847;
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 XYZ 2 CIELab |
//+------------------------------------------------------------------+
void CColors::XYZtoCIELab(const double aX,const double aY,const double aZ,double &oCIEL,double &oCIEa,double &oCIEb)
{
double ref_X =95.047;
double ref_Y =100.0;
double ref_Z =108.883;
double var_X =aX/ref_X;
double var_Y =aY/ref_Y;
double var_Z =aZ/ref_Z;
//---
if(var_X>0.008856)
var_X=::MathPow(var_X,1.0/3.0);
else
var_X=(7.787*var_X)+(16.0/116.0);
//---
if(var_Y>0.008856)
var_Y=::MathPow(var_Y,1.0/3.0);
else
var_Y=(7.787*var_Y)+(16.0/116.0);
//---
if(var_Z>0.008856)
var_Z=::MathPow(var_Z,1.0/3.0);
else
var_Z=(7.787*var_Z)+(16.0/116.0);
//---
oCIEL =(116.0*var_Y)-16.0;
oCIEa =500.0*(var_X-var_Y);
oCIEb =200*(var_Y-var_Z);
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 CIELab 2 ToXYZ |
//+------------------------------------------------------------------+
void CColors::CIELabToXYZ(const double aCIEL,const double aCIEa,const double aCIEb,double &oX,double &oY,double &oZ)
{
double var_Y =(aCIEL+16.0)/116.0;
double var_X =aCIEa/500.0+var_Y;
double var_Z =var_Y-aCIEb/200.0;
//---
if(::MathPow(var_Y,3)>0.008856)
var_Y=::MathPow(var_Y,3);
else
var_Y=(var_Y-16.0/116.0)/7.787;
//---
if(::MathPow(var_X,3)>0.008856)
var_X=::MathPow(var_X,3);
else
var_X=(var_X-16.0/116.0)/7.787;
//---
if(::MathPow(var_Z,3)>0.008856)
var_Z=::MathPow(var_Z,3);
else
var_Z=(var_Z-16.0/116.0)/7.787;
//---
double ref_X =95.047;
double ref_Y =100.0;
double ref_Z =108.883;
//---
oX =ref_X*var_X;
oY =ref_Y*var_Y;
oZ =ref_Z*var_Z;
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 CIELab 2 CIELCH |
//+------------------------------------------------------------------+
void CColors::CIELabToCIELCH(const double aCIEL,const double aCIEa,const double aCIEb,double &oCIEL,double &oCIEC,double &oCIEH)
{
double var_H=this.Arctan2(aCIEb,aCIEa);
//---
if(var_H>0)
var_H=(var_H/M_PI)*180.0;
else
var_H=360.0-(::MathAbs(var_H)/M_PI)*180.0;
//---
oCIEL =aCIEL;
oCIEC =::MathSqrt(::MathPow(aCIEa,2)+::MathPow(aCIEb,2));
oCIEH =var_H;
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 CIELCH 2 CIELab |
//+------------------------------------------------------------------+
void CColors::CIELCHtoCIELab(const double aCIEL,const double aCIEC,const double aCIEH,double &oCIEL,double &oCIEa,double &oCIEb)
{
//--- @3C<5=BK from 0 to 360<EFBFBD>
oCIEL =aCIEL;
oCIEa =::MathCos(M_PI*aCIEH/180.0)*aCIEC;
oCIEb =::MathSin(M_PI*aCIEH/180)*aCIEC;
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 XYZ 2 CIELuv |
//+------------------------------------------------------------------+
void CColors::XYZtoCIELuv(const double aX,const double aY,const double aZ,double &oCIEL,double &oCIEu,double &oCIEv)
{
double var_U =(4.0*aX)/(aX+(15.0*aY)+(3.0*aZ));
double var_V =(9.0*aY)/(aX+(15.0*aY)+(3.0*aZ));
double var_Y =aY/100.0;
//---
if(var_Y>0.008856)
var_Y=::MathPow(var_Y,1.0/3.0);
else
var_Y=(7.787*var_Y)+(16.0/116.0);
//---
double ref_X =95.047;
double ref_Y =100.000;
double ref_Z =108.883;
double ref_U =(4.0*ref_X)/(ref_X+(15.0*ref_Y)+(3.0*ref_Z));
double ref_V =(9.0*ref_Y)/(ref_X+(15.0*ref_Y)+(3.0*ref_Z));
//---
oCIEL =(116.0*var_Y)-16.0;
oCIEu =13.0*oCIEL*(var_U-ref_U);
oCIEv =13.0*oCIEL*(var_V-ref_V);
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 CIELuv 2 XYZ |
//+------------------------------------------------------------------+
void CColors::CIELuvToXYZ(const double aCIEL,const double aCIEu,const double aCIEv,double &oX,double &oY,double &oZ)
{
double var_Y=(aCIEL+16.0)/116.0;
//---
if(::MathPow(var_Y,3)>0.008856)
var_Y=::MathPow(var_Y,3);
else
var_Y=(var_Y-16.0/116.0)/7.787;
//---
double ref_X =95.047;
double ref_Y =100.000;
double ref_Z =108.883;
double ref_U =(4.0*ref_X)/(ref_X+(15.0*ref_Y)+(3.0*ref_Z));
double ref_V =(9.0*ref_Y)/(ref_X+(15.0*ref_Y)+(3.0*ref_Z));
double var_U =aCIEu/(13.0*aCIEL)+ref_U;
double var_V =aCIEv/(13.0*aCIEL)+ref_V;
//---
oY=var_Y*100.0;
oX=-(9.0*oY*var_U)/((var_U-4.0)*var_V-var_U*var_V);
oZ=(9.0*oY-(15.0*var_V*oY)-(var_V*oX))/(3.0*var_V);
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 RGB 2 HSL |
//+------------------------------------------------------------------+
void CColors::RGBtoHSL(const double aR,const double aG,const double aB,double &oH,double &oS,double &oL)
{
double var_R =(aR/255);
double var_G =(aG/255);
double var_B =(aB/255);
double var_Min =::MathMin(var_R,::MathMin(var_G,var_B));
double var_Max =::MathMax(var_R,::MathMax(var_G,var_B));
double del_Max =var_Max-var_Min;
//---
oL=(var_Max+var_Min)/2;
//---
if(del_Max==0)
{
oH=0;
oS=0;
}
else
{
if(oL<0.5)
oS=del_Max/(var_Max+var_Min);
else
oS=del_Max/(2.0-var_Max-var_Min);
//---
double del_R =(((var_Max-var_R)/6.0)+(del_Max/2.0))/del_Max;
double del_G =(((var_Max-var_G)/6.0)+(del_Max/2.0))/del_Max;
double del_B =(((var_Max-var_B)/6.0)+(del_Max/2.0))/del_Max;
//---
if(var_R==var_Max)
oH=del_B-del_G;
else if(var_G==var_Max)
oH=(1.0/3.0)+del_R-del_B;
else if(var_B==var_Max)
oH=(2.0/3.0)+del_G-del_R;
//---
if(oH<0)
oH+=1.0;
//---
if(oH>1)
oH-=1.0;
}
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 HSL 2 RGB |
//+------------------------------------------------------------------+
void CColors::HSLtoRGB(const double aH,const double aS,const double aL,double &oR,double &oG,double &oB)
{
if(aS==0)
{
oR=aL*255;
oG=aL*255;
oB=aL*255;
}
else
{
double var_2=0.0;
//---
if(aL<0.5)
var_2=aL*(1.0+aS);
else
var_2=(aL+aS)-(aS*aL);
//---
double var_1=2.0*aL-var_2;
oR =255.0*Hue_To_RGB(var_1,var_2,aH+(1.0/3.0));
oG =255.0*Hue_To_RGB(var_1,var_2,aH);
oB =255.0*Hue_To_RGB(var_1,var_2,aH-(1.0/3.0));
}
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 RGB 2 HSV |
//+------------------------------------------------------------------+
void CColors::RGBtoHSV(const double aR,const double aG,const double aB,double &oH,double &oS,double &oV)
{
const double var_R =(aR/255.0);
const double var_G =(aG/255.0);
const double var_B =(aB/255.0);
const double var_Min =::MathMin(var_R,::MathMin(var_G, var_B));
const double var_Max =::MathMax(var_R,::MathMax(var_G,var_B));
const double del_Max =var_Max-var_Min;
//---
oV=var_Max;
//---
if(del_Max==0)
{
oH=0;
oS=0;
}
else
{
oS=del_Max/var_Max;
const double del_R =(((var_Max-var_R)/6.0)+(del_Max/2))/del_Max;
const double del_G =(((var_Max-var_G)/6.0)+(del_Max/2))/del_Max;
const double del_B =(((var_Max-var_B)/6.0)+(del_Max/2))/del_Max;
//---
if(var_R==var_Max)
oH=del_B-del_G;
else if(var_G==var_Max)
oH=(1.0/3.0)+del_R-del_B;
else if(var_B==var_Max)
oH=(2.0/3.0)+del_G-del_R;
//---
if(oH<0)
oH+=1.0;
//---
if(oH>1.0)
oH-=1.0;
}
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 HSV 2 RGB |
//+------------------------------------------------------------------+
void CColors::HSVtoRGB(const double aH,const double aS,const double aV,double &oR,double &oG,double &oB)
{
if(aS==0)
{
oR =aV*255.0;
oG =aV*255.0;
oB =aV*255.0;
}
else
{
double var_h=aH*6.0;
//---
if(var_h==6)
var_h=0;
//---
int var_i =int(var_h);
double var_1 =aV*(1.0-aS);
double var_2 =aV*(1.0-aS*(var_h-var_i));
double var_3 =aV*(1.0-aS*(1.0-(var_h-var_i)));
double var_r =0.0;
double var_g =0.0;
double var_b =0.0;
//---
if(var_i==0)
{
var_r =aV;
var_g =var_3;
var_b =var_1;
}
else if(var_i==1.0)
{
var_r=var_2;
var_g=aV;
var_b=var_1;
}
else if(var_i==2.0)
{
var_r=var_1;
var_g=aV;
var_b=var_3;
}
else if(var_i==3)
{
var_r=var_1;
var_g=var_2;
var_b=aV;
}
else if(var_i==4)
{
var_r=var_3;
var_g=var_1;
var_b=aV;
}
else
{
var_r=aV;
var_g=var_1;
var_b=var_2;
}
//---
oR =var_r*255.0;
oG =var_g*255.0;
oB =var_b*255.0;
}
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 RGB 2 CMY |
//+------------------------------------------------------------------+
void CColors::RGBtoCMY(const double aR,const double aG,const double aB,double &oC,double &oM,double &oY)
{
oC =1.0-(aR/255.0);
oM =1.0-(aG/255.0);
oY =1.0-(aB/255.0);
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 CMY 2 RGB |
//+------------------------------------------------------------------+
void CColors::CMYtoRGB(const double aC,const double aM,const double aY,double &oR,double &oG,double &oB)
{
oR =(1.0-aC)*255.0;
oG =(1.0-aM)*255.0;
oB =(1.0-aY)*255.0;
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 CMY 2 CMYK |
//+------------------------------------------------------------------+
void CColors::CMYtoCMYK(const double aC,const double aM,const double aY,double &oC,double &oM,double &oY,double &oK)
{
double var_K=1;
//---
if(aC<var_K)
var_K=aC;
if(aM<var_K)
var_K=aM;
if(aY<var_K)
var_K=aY;
//---
if(var_K==1.0)
{
oC =0;
oM =0;
oY =0;
}
else
{
oC =(aC-var_K)/(1.0-var_K);
oM =(aM-var_K)/(1.0-var_K);
oY =(aY-var_K)/(1.0-var_K);
}
//---
oK=var_K;
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 CMYK 2 CMY |
//+------------------------------------------------------------------+
void CColors::CMYKtoCMY(const double aC,const double aM,const double aY,const double aK,double &oC,double &oM,double &oY)
{
oC =(aC*(1.0-aK)+aK);
oM =(aM*(1.0-aK)+aK);
oY =(aY*(1.0-aK)+aK);
}
//+------------------------------------------------------------------+
//| >;CG5=85 7=0G5=89 :><?>=5=B>2 RGB |
//+------------------------------------------------------------------+
void CColors::ColorToRGB(const color aColor,double &aR,double &aG,double &aB)
{
aR =GetR(aColor);
aG =GetG(aColor);
aB =GetB(aColor);
}
//+------------------------------------------------------------------+
//| >;CG5=85 7=0G5=8O :><?>=5=B0 R |
//+------------------------------------------------------------------+
double CColors::GetR(const color aColor)
{
return(aColor&0xff);
}
//+------------------------------------------------------------------+
//| >;CG5=85 7=0G5=8O :><?>=5=B0 G |
//+------------------------------------------------------------------+
double CColors::GetG(const color aColor)
{
return((aColor>>8)&0xff);
}
//+------------------------------------------------------------------+
//| >;CG5=85 7=0G5=8O :><?>=5=B0 B |
//+------------------------------------------------------------------+
double CColors::GetB(const color aColor)
{
return((aColor>>16)&0xff);
}
//+------------------------------------------------------------------+
//| >;CG5=85 7=0G5=8O :><?>=5=B0 A |
//+------------------------------------------------------------------+
double CColors::GetA(const color aColor)
{
return(double(uchar((aColor)>>24)));
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 RGB 2 const color |
//+------------------------------------------------------------------+
color CColors::RGBToColor(const double aR,const double aG,const double aB)
{
int int_r =(int)::MathRound(aR);
int int_g =(int)::MathRound(aG);
int int_b =(int)::MathRound(aB);
int Color =0;
//---
Color=int_b;
Color<<=8;
Color|=int_g;
Color<<=8;
Color|=int_r;
//---
return((color)Color);
}
//+------------------------------------------------------------------+
//| >;CG5=85 7=0G5=8 ?@><56CB>G=>3> F25B0 <564C 42CE F25B>2 |
//+------------------------------------------------------------------+
color CColors::MixColors(const color aCol1,const color aCol2,const double aK)
{
//--- aK - >B 0 4> 1
double R1=0.0,G1=0.0,B1=0.0,R2=0.0,G2=0.0,B2=0.0;
//---
ColorToRGB(aCol1,R1,G1,B1);
ColorToRGB(aCol2,R2,G2,B2);
//---
R1+=(int)::MathRound(aK*(R2-R1));
G1+=(int)::MathRound(aK*(G2-G1));
B1+=(int)::MathRound(aK*(B2-B1));
//---
return(RGBToColor(R1,G1,B1));
}
//+------------------------------------------------------------------+
//| !<5H820=85 42CE F25B>2 A CGQB>< ?@>7@0G=>AB8 25@E=53> |
//+------------------------------------------------------------------+
color CColors::BlendColors(const uint lower_color,const uint upper_color)
{
double r1=0,g1=0,b1=0;
double r2=0,g2=0,b2=0,alpha=0;
double r3=0,g3=0,b3=0;
//--- >=25@B0F8O F25B0 2 D>@<0B ARGB
uint pixel_color=::ColorToARGB(upper_color);
//--- >;CG8< :><?>=5=BK =86=53> 8 25@E=53> F25B>2
ColorToRGB(lower_color,r1,g1,b1);
ColorToRGB(pixel_color,r2,g2,b2);
//--- >;CG8< ?@>F5=B ?@>7@0G=>AB8 >B 0.00 4> 1.00
alpha=GetA(upper_color)/255.0;
//--- A;8 5ABL ?@>7@0G=>ABL
if(alpha<1.0)
{
//--- !<5H8205< :><?>=5=BK A CGQB>< 0;LD0-:0=0;0
r3=(r1*(1-alpha))+(r2*alpha);
g3=(g1*(1-alpha))+(g2*alpha);
b3=(b1*(1-alpha))+(b2*alpha);
//--- >@@5:F8O ?>;CG5==KE 7=0G5=89
r3=(r3>255)? 255 : r3;
g3=(g3>255)? 255 : g3;
b3=(b3>255)? 255 : b3;
}
else
{
r3=r2;
g3=g2;
b3=b2;
}
//--- !>548=8BL ?>;CG5==K5 :><?>=5=BK 8 25@=CBL F25B
return(RGBToColor(r3,g3,b3));
}
//+------------------------------------------------------------------+
//| >;CG5=85 <0AA820 7040==>3> @07<5@0 A F25B>2K< 3@0485=B>< |
//+------------------------------------------------------------------+
void CColors::Gradient(color &aColors[], // !?8A>: F25B>2
color &aOut[], // >72@0I05<K9 <0AA82
int aOutCount, // #AB0=>2:0 @07<5@0 2>72@0I05<>3> <0AA820
bool aCycle=false) // 0<:=CBK9 F8:;. >72@0I05<K9 <0AA82 70:0=G8205BAO B0:8< 65 F25B><, A :>B>@>3> =0G8=05BAO
{
::ArrayResize(aOut,aOutCount);
//---
int InCount =::ArraySize(aColors)+aCycle;
int PrevJ =0;
int nci =0;
double K =0.0;
//---
for(int i=1; i<InCount; i++)
{
int J=(aOutCount-1)*i/(InCount-1);
//---
for(int j=PrevJ; j<=J; j++)
{
if(aCycle && i==InCount-1)
{
nci =0;
K =1.0*(j-PrevJ)/(J-PrevJ+1);
}
else
{
nci =i;
K =1.0*(j-PrevJ)/(J-PrevJ);
}
aOut[j]=MixColors(aColors[i-1],aColors[nci],K);
}
PrevJ=J;
}
}
//+------------------------------------------------------------------+
//| I5 >48= 20@80=B ?@5>1@07>20=8O RGB 2 XYZ 8 |
//| A>>B25BAB2CNI55 5<C ?@5>1@07>20=85 XYZ 2 RGB |
//+------------------------------------------------------------------+
void CColors::RGBtoXYZsimple(double aR,double aG,double aB,double &oX,double &oY,double &oZ)
{
aR/=255;
aG/=255;
aB/=255;
aR*=100;
aG*=100;
aB*=100;
//---
oX=0.431*aR+0.342*aG+0.178*aB;
oY=0.222*aR+0.707*aG+0.071*aB;
oZ=0.020*aR+0.130*aG+0.939*aB;
}
//+------------------------------------------------------------------+
//| XYZtoRGBsimple |
//+------------------------------------------------------------------+
void CColors::XYZtoRGBsimple(const double aX,const double aY,const double aZ,double &oR,double &oG,double &oB)
{
oR=3.063*aX-1.393*aY-0.476*aZ;
oG=-0.969*aX+1.876*aY+0.042*aZ;
oB=0.068*aX-0.229*aY+1.069*aZ;
}
//+------------------------------------------------------------------+
//| 530B82=K9 F25B |
//+------------------------------------------------------------------+
color CColors::Negative(const color aColor)
{
double R=0.0,G=0.0,B=0.0;
ColorToRGB(aColor,R,G,B);
//---
return(RGBToColor(255-R,255-G,255-B));
}
//+------------------------------------------------------------------+
//| >8A: =081>;55 ?>E>653> F25B0 |
//| 2 =01>@5 AB0=40@B=KE F25B>2 B5@<8=0;0 |
//+------------------------------------------------------------------+
color CColors::StandardColor(const color aColor,int &aIndex)
{
color m_c[]=
{
clrBlack,clrDarkGreen,clrDarkSlateGray,clrOlive,clrGreen,clrTeal,clrNavy,clrPurple,clrMaroon,clrIndigo,
clrMidnightBlue,clrDarkBlue,clrDarkOliveGreen,clrSaddleBrown,clrForestGreen,clrOliveDrab,clrSeaGreen,
clrDarkGoldenrod,clrDarkSlateBlue,clrSienna,clrMediumBlue,clrBrown,clrDarkTurquoise,clrDimGray,
clrLightSeaGreen,clrDarkViolet,clrFireBrick,clrMediumVioletRed,clrMediumSeaGreen,clrChocolate,clrCrimson,
clrSteelBlue,clrGoldenrod,clrMediumSpringGreen,clrLawnGreen,clrCadetBlue,clrDarkOrchid,clrYellowGreen,
clrLimeGreen,clrOrangeRed,clrDarkOrange,clrOrange,clrGold,clrYellow,clrChartreuse,clrLime,clrSpringGreen,
clrAqua,clrDeepSkyBlue,clrBlue,clrFuchsia,clrRed,clrGray,clrSlateGray,clrPeru,clrBlueViolet,clrLightSlateGray,
clrDeepPink,clrMediumTurquoise,clrDodgerBlue,clrTurquoise,clrRoyalBlue,clrSlateBlue,clrDarkKhaki,clrIndianRed,
clrMediumOrchid,clrGreenYellow,clrMediumAquamarine,clrDarkSeaGreen,clrTomato,clrRosyBrown,clrOrchid,
clrMediumPurple,clrPaleVioletRed,clrCoral,clrCornflowerBlue,clrDarkGray,clrSandyBrown,clrMediumSlateBlue,
clrTan,clrDarkSalmon,clrBurlyWood,clrHotPink,clrSalmon,clrViolet,clrLightCoral,clrSkyBlue,clrLightSalmon,
clrPlum,clrKhaki,clrLightGreen,clrAquamarine,clrSilver,clrLightSkyBlue,clrLightSteelBlue,clrLightBlue,
clrPaleGreen,clrThistle,clrPowderBlue,clrPaleGoldenrod,clrPaleTurquoise,clrLightGray,clrWheat,clrNavajoWhite,
clrMoccasin,clrLightPink,clrGainsboro,clrPeachPuff,clrPink,clrBisque,clrLightGoldenrod,clrBlanchedAlmond,
clrLemonChiffon,clrBeige,clrAntiqueWhite,clrPapayaWhip,clrCornsilk,clrLightYellow,clrLightCyan,clrLinen,
clrLavender,clrMistyRose,clrOldLace,clrWhiteSmoke,clrSeashell,clrIvory,clrHoneydew,clrAliceBlue,clrLavenderBlush,
clrMintCream,clrSnow,clrWhite,clrDarkCyan,clrDarkRed,clrDarkMagenta,clrAzure,clrGhostWhite,clrFloralWhite
};
//---
double m_rv=0.0,m_gv=0.0,m_bv=0.0;
//---
ColorToRGB(aColor,m_rv,m_gv,m_bv);
//---
double m_md=0.3*::MathPow(255,2)+0.59*::MathPow(255,2)+0.11*::MathPow(255,2)+1;
aIndex=0;
//---
for(int i=0; i<138; i++)
{
double m_d=0.3*::MathPow(GetR(m_c[i])-m_rv,2)+0.59*::MathPow(GetG(m_c[i])-m_gv,2)+0.11*::MathPow(GetB(m_c[i])-m_bv,2);
//---
if(m_d<m_md)
{
m_md =m_d;
aIndex =i;
}
}
//---
return(m_c[aIndex]);
}
//+------------------------------------------------------------------+
//| @5>1@07>20=85 2 A5@K9 F25B |
//+------------------------------------------------------------------+
double CColors::RGBtoGray(double aR,double aG,double aB)
{
aR/=255;
aG/=255;
aB/=255;
//---
aR=::MathPow(aR,2.2);
aG=::MathPow(aG,2.2);
aB=::MathPow(aB,2.2);
//---
double rY=0.21*aR+0.72*aG+0.07*aB;
rY=::MathPow(rY,1.0/2.2);
//---
return(rY);
}
//+------------------------------------------------------------------+
//| @>AB>5 ?@5>1@07>20=85 2 A5@K9 F25B |
//+------------------------------------------------------------------+
double CColors::RGBtoGraySimple(double aR,double aG,double aB)
{
aR/=255;
aG/=255;
aB/=255;
double rY=0.3*aR+0.59*aG+0.11*aB;
//---
return(rY);
}
//+------------------------------------------------------------------+
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