//! get a filtered pixel
inline ColourValue CImage::getPixelBox(SINT32 x, SINT32 y, SINT32 fx, SINT32 fy, SINT32 bias) const
{
ColourValue c;
SINT32 a = 0, r = 0, g = 0, b = 0;
for (SINT32 dx = 0; dx != fx; ++dx)
{
for (SINT32 dy = 0; dy != fy; ++dy)
{
c = getPixel(SINT32_min(x + dx, Size.Width - 1),
SINT32_min(y + dy, Size.Height - 1)
);
a += c.getAlpha();
r += c.getRed();
g += c.getGreen();
b += c.getBlue();
}
}
SINT32 sdiv = s32_log2_f32(fx * fy);
a = SINT32_clamp((a >> sdiv) + bias, 0, 255);
r = SINT32_clamp((r >> sdiv) + bias, 0, 255);
g = SINT32_clamp((g >> sdiv) + bias, 0, 255);
b = SINT32_clamp((b >> sdiv) + bias, 0, 255);
c.setAlpha(a);
c.setRed(r);
c.setBlue(b);
c.setGreen(g);
//c.set(a, r, g, b);
return c;
}
//! returns a pixel
ColourValue CImage::getPixel(UINT32 x, UINT32 y) const
{
ColourValue c;
if (x >= Size.Width || y >= Size.Height)
return c;
switch (Format)
{
case ECF_A1R5G5B5:
c.setAsARGB(A1R5G5B5toA8R8G8B8(((UINT16*)Data)[y*Size.Width + x]));
return c; //A1R5G5B5toA8R8G8B8(((UINT16*)Data)[y*Size.Width + x]);
case ECF_R5G6B5:
c.setAsARGB(R5G6B5toA8R8G8B8(((UINT16*)Data)[y*Size.Width + x]));
return c;//R5G6B5toA8R8G8B8(((UINT16*)Data)[y*Size.Width + x]);
case ECF_A8R8G8B8:
c.setAsARGB(((UINT32*)Data)[y*Size.Width + x]);
return c;// ((UINT32*)Data)[y*Size.Width + x];
case ECF_R8G8B8:
{
UINT8* p = Data + (y * 3)*Size.Width + (x * 3);
c.setAlpha(255);
c.setRed(p[0]);
c.setBlue(p[1]);
c.setGreen(p[2]);
return c;
}
#ifndef _DEBUG
default:
break;
#endif
}
return ColourValue(0);
}
