Anthony Thyssen skrev:
| 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.
|
| // 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;
| }
|
You should be able to set a color with a 'matte' value (0 = opaque,
MaxRGB for transparent. Not sure of the syntax for Magick++
On the command line you can use...
-background '#FFFF8880'
Yes, that's what I thought I did with the last value in the color value.
As I said, I got it to work using the MagickWand API (and also from the
command line client). But not yet using Magick++. I'm sure there is some
small stupid thing that need to be added to my program, but what?
/Dennis
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