1 files changed, 120 insertions, 0 deletions
diff --git a/ColorSpacesConversions.cpp b/ColorSpacesConversions.cpp
new file mode 100644
index 0000000..5078953
--- /dev/null
+++ b/ColorSpacesConversions.cpp
@@ -0,0 +1,120 @@
+//---------------------------------------------------------------------------
+
+#include "ColorSpacesConversions.h"
+
+#define max(a,b) (a>b?a:b)
+#define min(a,b) (a<b?a:b)
+
+void HSLfromRGB(unsigned char* cHSL,unsigned char* cRGB)
+{
+    unsigned char iR=cRGB[0];
+    unsigned char iG=cRGB[1];
+    unsigned char iB=cRGB[2];
+    float fR = ((float)iR)/255;
+    float fG = ((float)iG)/255;
+    float fB = ((float)iB)/255;
+    float fL,fH,fS;
+    char iL,iH,iS;
+
+    float minRGB=min(fR,min(fG,fB));
+    float maxRGB=max(fR,max(fG,fB));
+    float deltaRGB=maxRGB - minRGB;
+
+    float deltaR = (((maxRGB-fR)/6)+(deltaRGB/2))/deltaRGB;
+    float deltaG = (((maxRGB-fG)/6)+(deltaRGB/2))/deltaRGB;
+    float deltaB = (((maxRGB-fB)/6)+(deltaRGB/2))/deltaRGB;
+
+
+    fL = (minRGB+maxRGB)/2;
+
+    if(deltaRGB==0)
+        fH=fS=0;
+    else
+    {
+        if(fL<0.5)
+            fS = deltaRGB/(minRGB+maxRGB);
+        else
+            fS = deltaRGB/(2.0-minRGB-maxRGB);
+
+        if(fR==maxRGB)
+            fH = deltaB - deltaG;
+        else if(fG==maxRGB)
+            fH = (1.0/3)+deltaR-deltaB;
+        else if (fB==maxRGB)
+            fH = (2.0/3)+deltaG-deltaR;
+        else
+            fH = 0;
+
+        if(fH<0)
+            fH+=1;
+        if(fH>1)
+            fH-=1;
+    }
+
+    iH=(unsigned char)(fH*255);
+    iS=(unsigned char)(fS*255);
+    iL=(unsigned char)(fL*255);
+
+    cHSL[0]=iH;
+    cHSL[1]=iS;
+    cHSL[2]=iL;
+}
+
+
+float SubFunForRGBfromHSL(float v1,float v2,float v3)
+{
+    float vH=v3;
+    if(vH<0)
+        vH+=1;
+    if(vH>1)
+        vH-=1;
+    if((6*vH)<1.0)
+        return v1+(v2-v1)*6*vH;
+    if((2*vH)<1)
+        return v2;
+    if((3*vH)<2.0)
+        return v1+(v2-v1)*((2.0/3)-vH)*6;
+    return v1;
+}
+
+
+void RGBfromHSL(unsigned char* cRGB,unsigned char* cHSL)
+{
+    unsigned char iH=cHSL[0];
+    unsigned char iS=cHSL[1];
+    unsigned char iL=cHSL[2];
+    float fH = ((float)iH)/255;
+    float fS = ((float)iS)/255;
+    float fL = ((float)iL)/255;
+    float v1,v2;
+    float fR,fG,fB;
+    char iR,iG,iB;
+
+    if(fS==0)
+    {
+        fR=fL;
+        fG=fL;
+        fB=fL;
+    }
+    else
+    {
+        if (fL<0.5)
+            v2=fL*(1.0+fS);
+        else
+            v2=(fL+fS)-(fS*fL);
+        v1=2*fL-v2;
+        fR=SubFunForRGBfromHSL(v1,v2,fH+(1.0/3));
+        fG=SubFunForRGBfromHSL(v1,v2,fH);
+        fB=SubFunForRGBfromHSL(v1,v2,fH-(1.0/3));
+    }
+
+    iR=(unsigned char)(fR*255);
+    iG=(unsigned char)(fG*255);
+    iB=(unsigned char)(fB*255);
+
+    cRGB[0]=iR;
+    cRGB[1]=iG;
+    cRGB[2]=iB;
+}
+
+//---------------------------------------------------------------------------