Steven Osborn on wrote...
| I'm trying to create a composite image. The main image is a jpeg read
| from a file and the sub image is created during run time and I draw a
| circle on perform various other filters to it then combine it with the
| main image, but it leaves a white square background around the circle.
| I've tried a dozen different things to make the background transparent,
| but haven't had any luck. Can anyone give me a hint as to what I need
| to do. I've include simplified code to help give an idea of what I'm
| trying to do.
|
| Image image("image.jpg");
| Image bubble(Geometry(50,50),ColorRGB(60,179,113));
| list<Drawable> drawList;
|
| drawList.push_back(DrawableCircle(25,25,40,40));
| drawList.push_back(DrawablePointSize(_fontSize));
| // Do a lot of other stuff to circle
| bubble.draw(drawList);
|
| image.draw(DrawableCompositeImage(_bubbleX,_bubbleY,bubble));
| // "bubble" needs a transparent background
I am not certian how to set a color with an alpha channel in Magick++
probaly as a guess it follows the RGBA style... ColorRGBA(0,0,0,.0)
Check the manual.
If you can use a named color use "none" or "transparent".
Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]>
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Grok (vb) :- To drink in all the knowledge.
[ From the martian meaning: To Drink ]
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Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/
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