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Hi,
newbie question:
How can I generate an image (PNG file) with transparency?
I can make objects in a povray scene transparent, but not the
background. Whatever I do, every single pixel of the resulting pictures
becomes any solid color. If the ray hits just nothing, it is black.
I can have any color with the background command or by defining a plane,
but not transparency.
Would I would like to do:
- Have rays hitting the background result in a transparent pixel.
E.g. when tracing a cube, everything outside the cube becomes
transparent.
- More complicated: Have shadows on transparent background, i.e. turn
the full transparency into black with alpha channnel between 0 and 1
I'd like to use that to render objects to be put on web pages.
rectangular images are useless, I need to have PNGs with just the object
(and a drop shadow).
Any hint how to do it?
regards
Hadmut
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