void PLTestFilterResizeBilinear::createBmp(PLBmp& Bmp)
{
Bmp.Create (8, 8, PLPixelFormat::X8R8G8B8);
int x,y;
for (y=0; y<4; y++)
for (x=0; x<4; x++)
Bmp.SetPixel (x,y, PLPixel32 (255,0,0,0));
for (y=0; y<4; y++)
for (x=4; x<8; x++)
Bmp.SetPixel (x,y, PLPixel32 (0,255,0,0));
for (y=4; y<8; y++)
for (x=0; x<4; x++)
Bmp.SetPixel (x,y, PLPixel32 (0,0,255,0));
for (y=4; y<8; y++)
for (x=4; x<8; x++)
Bmp.SetPixel (x,y, PLPixel32 (255,255,255,0));
}
void
gaussianblur(PLBmpBase * theSource, PLBmp * theDestination, const KernelVec & theKernel, double theRadius,
unsigned theRealWidth, unsigned theRealHeight, double theSigma) {
int myIntRadius = int(ceil(double(theRadius)));
unsigned mySrcHeight = theSource->GetHeight();
unsigned mySrcWidth = theSource->GetWidth();
unsigned myDestWidth = mySrcWidth;
unsigned myDestHeight = mySrcHeight;
PLBmp * myTempBmp = new PLAnyBmp();
myTempBmp->Create(myDestWidth, mySrcHeight, theSource->GetPixelFormat());
theDestination->Create(myDestWidth, myDestHeight, theSource->GetPixelFormat());
// Convolve in x-direction
int myOffset = myIntRadius - 1;
{
// pass 1: Glur in x direction
for (unsigned y=0; y < mySrcHeight; ++y) {
for(unsigned x=0; x<myDestWidth; ++x) {
PIXELTYPE myColor;
clearPixel(myColor);
for(int w=0; w<myIntRadius; ++w) {
int xs = x + w - myOffset;
PIXELTYPE myKernelPixel;
if (xs>=0 && static_cast<unsigned>(xs)<theRealWidth) {
getPix<PIXELTYPE>(theSource, xs,y, myKernelPixel);
} else {
if (xs < 0) {
getPix<PIXELTYPE>(theSource, 0,y, myKernelPixel);
} else {
getPix<PIXELTYPE>(theSource, theRealWidth-1,y, myKernelPixel);
}
}
multAndStore(myColor, &myKernelPixel, theKernel[w]);
xs = x + w;
if (xs>=0 && static_cast<unsigned>(xs)<theRealWidth) {
getPix<PIXELTYPE>(theSource, xs,y, myKernelPixel);
} else {
if (xs < 0) {
getPix<PIXELTYPE>(theSource, 0,y, myKernelPixel);
} else {
getPix<PIXELTYPE>(theSource, theRealWidth-1,y, myKernelPixel);
}
}
multAndStore(myColor, &myKernelPixel, theKernel[w+myIntRadius]);
}
myTempBmp->SetPixel(x,y,myColor);
}
}
}
for(unsigned x=0; x<myDestWidth; ++x) {
for (unsigned y=0; y < myDestHeight; ++y) {
PIXELTYPE myColor;
clearPixel(myColor);
for(int w=0; w<myIntRadius; ++w) {
int ys = y + w - myOffset;
PIXELTYPE myKernelPixel;
if (ys>=0 && static_cast<unsigned>(ys)<theRealHeight) {
getPix<PIXELTYPE>(myTempBmp, x,ys, myKernelPixel);
} else {
if (ys < 0) {
getPix<PIXELTYPE>(myTempBmp, x,0, myKernelPixel);
} else {
getPix<PIXELTYPE>(myTempBmp, x,theRealHeight-1, myKernelPixel);
}
}
multAndStore(myColor, &myKernelPixel, theKernel[w]);
ys = y + w;
if (ys>=0 && static_cast<unsigned>(ys)<theRealHeight) {
getPix<PIXELTYPE>(myTempBmp, x,ys, myKernelPixel);
} else {
if (ys < 0) {
getPix<PIXELTYPE>(myTempBmp, x,0, myKernelPixel);
} else {
getPix<PIXELTYPE>(myTempBmp, x,theRealHeight-1, myKernelPixel);
}
}
multAndStore(myColor, &myKernelPixel, theKernel[w+myIntRadius]);
}
theDestination->SetPixel(x,y,myColor);
}
}
delete myTempBmp;
}