Ref<Image> loadMagick(const FileName& fileName)
{
Magick::Image image(fileName.c_str());
Image* out = new Image4uc(image.columns(),image.rows(),fileName);
float rcpMaxRGB = 1.0f/float(MaxRGB);
Magick::Pixels pixel_cache(image);
Magick::PixelPacket* pixels = pixel_cache.get(0,0,out->width,out->height);
switch (image.orientation())
{
case UndefinedOrientation:
case TopLeftOrientation: {
for (size_t y=0; y<out->height; y++) {
for (size_t x=0; x<out->width; x++) {
Color4 c;
c.r = float(pixels[y*out->width+x].red)*rcpMaxRGB;
c.g = float(pixels[y*out->width+x].green)*rcpMaxRGB;
c.b = float(pixels[y*out->width+x].blue)*rcpMaxRGB;
c.a = float(pixels[y*out->width+x].opacity)*rcpMaxRGB;
out->set(x,out->height-y-1,c);
}
}
break;
}
case BottomLeftOrientation: {
for (size_t y=0; y<out->height; y++) {
for (size_t x=0; x<out->width; x++) {
Color4 c;
c.r = float(pixels[y*out->width+x].red)*rcpMaxRGB;
c.g = float(pixels[y*out->width+x].green)*rcpMaxRGB;
c.b = float(pixels[y*out->width+x].blue)*rcpMaxRGB;
c.a = float(pixels[y*out->width+x].opacity)*rcpMaxRGB;
out->set(x,y,c);
}
}
break;
}
default: {
throw std::runtime_error("not supported image orientation");
}
}
return out;
}
void storeMagick(const Ref<Image>& img, const FileName& fileName)
{
Magick::Image image(Magick::Geometry(img->width,img->height),
Magick::ColorRGB(0,0,0));
image.modifyImage();
Magick::Pixels pixel_cache(image);
Magick::PixelPacket* pixels = pixel_cache.get(0,0,img->width,img->height);
for (size_t y=0; y<img->height; y++) {
for (size_t x=0; x<img->width; x++) {
Color4 c = img->get(x,y);
pixels[y*img->width+x] = Magick::ColorRGB(Magick::Quantum(clamp(c.r)*MaxRGB),
Magick::Quantum(clamp(c.g)*MaxRGB),
Magick::Quantum(clamp(c.b)*MaxRGB));
}
}
pixel_cache.sync();
image.write(fileName.c_str());
}
Ref<Image> loadMagick(const FileName& fileName)
{
Magick::Image image(fileName.c_str());
Image* out = new Image4c(image.columns(),image.rows(),fileName);
float rcpMaxRGB = 1.0f/float(MaxRGB);
Magick::Pixels pixel_cache(image);
Magick::PixelPacket* pixels = pixel_cache.get(0,0,out->width,out->height);
for (size_t y=0; y<out->height; y++) {
for (size_t x=0; x<out->width; x++) {
Color4 c;
c.r = float(pixels[y*out->width+x].red )*rcpMaxRGB;
c.g = float(pixels[y*out->width+x].green )*rcpMaxRGB;
c.b = float(pixels[y*out->width+x].blue )*rcpMaxRGB;
c.a = float(pixels[y*out->width+x].opacity)*rcpMaxRGB;
out->set(x,y,c);
}
}
return out;
}
