I want to rotate an image using Magick++ and I want the
background color (for the parts that are filled in by the rotation)
to have some alpha value.
I wrote the following program but it only fill in the new areas using the
color without the alpha value. When I do a similar program using the wand
api I get the result that I want. What did I do wrong in my Magick++
program?
/Dennis
// g++ `Magick++-config --cppflags --cxxflags --ldflags --libs` test.cc
#include <Magick++.h>
using namespace Magick;
int
main (int argc,
char **argv)
{
Image im;
Color c (0xffff, 0, 0xffff, 0x8888);
im.read ("cat.jpg"); // change to some image you have
im.matte(true);
im.backgroundColor (c);
im.rotate(20);
im.write ("out.png");
return 0;
}
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