// 0 <= n < 1
void RgbEffects::GetMultiColorBlend(double n, bool circular, xlColour &color)
{
size_t colorcnt=GetColorCount();
if (colorcnt <= 1)
{
palette.GetColor(0,color);
return;
}
if (n >= 1.0) n=0.99999;
if (n < 0.0) n=0.0;
double realidx=circular ? n*colorcnt : n*(colorcnt-1);
int coloridx1=floor(realidx);
int coloridx2=(coloridx1+1) % colorcnt;
double ratio=realidx-double(coloridx1);
Get2ColorBlend(coloridx1,coloridx2,ratio,color);
}
// 0 <= n < 1
void RenderBuffer::GetMultiColorBlend(float n, bool circular, xlColor &color)
{
size_t colorcnt=GetColorCount();
if (colorcnt <= 1)
{
palette.GetColor(0,color);
return;
}
if (n >= 1.0) n=0.99999f;
if (n < 0.0) n=0.0f;
float realidx=circular ? n*colorcnt : n*(colorcnt-1);
int coloridx1=floor(realidx);
int coloridx2=(coloridx1+1) % colorcnt;
float ratio=realidx-float(coloridx1);
Get2ColorBlend(coloridx1,coloridx2,ratio,color);
}
// 0 <= n < 1
void PixelBufferClass::GetMultiColorBlend(int layer, double n, bool circular, wxColour &color)
{
/*
// debug
wxClientDC dc(DrawWindow);
wxString msg=wxString::Format(wxT("%6.4f"),n);
wxColour txtcolor(255,255,255);
dc.Clear();
dc.SetTextForeground(txtcolor);
dc.DrawText(msg,0,0);
*/
size_t colorcnt=GetColorCount(layer);
if (colorcnt <= 1) {
palette[layer].GetColor(0,color);
return;
}
if (n >= 1.0) n=0.99999;
if (n < 0.0) n=0.0;
double realidx=circular ? n*colorcnt : n*(colorcnt-1);
int coloridx1=floor(realidx);
int coloridx2=(coloridx1+1) % colorcnt;
double ratio=realidx-double(coloridx1);
Get2ColorBlend(layer,coloridx1,coloridx2,ratio,color);
}
void RenderBuffer::Get2ColorBlend(int coloridx1, int coloridx2, float ratio, xlColor &color)
{
color = palette.GetColor(coloridx1);
const xlColor &c2 = palette.GetColor(coloridx2);
Get2ColorBlend(color, c2, ratio);
}