From: Martijn W. van der Lee (gmane_at_[hidden])
Date: 2002-05-15 11:50:42
Personally I gind the reverse you suggested more natural (if it's called
transparency, 1.0 should be fully transparent) but most graphics
applications use 0.0 for transparent, 1.0 for opaque. Perhaps you should
look into what OpenGL specifies.
Martijn van der Lee
> Thanks a lot.
> Two little questions. Is it a common practice to use value 0 for absolut
> opacity and 255 for absolut transparency?
> AGG uses 0.0 for transparency and 1.0 for opacity, i.e. contrariwise.
> What would you prefer?
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