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BUILT-IN MATHEMATICA SYMBOL
Opacity
Opacity[a]
is a graphics directive which specifies that graphical objects which follow are to be displayed, if possible, with opacity a.
Opacity[a, color]
uses the specified color with opacity a.
Details
- Opacity runs from 0 to 1, with 0 representing perfect transparency.
- If an opacity a object with color
is placed in front of an object with color 
, the resulting color will be the blend 
. - If red and blue with opacity 0.5 are combined, the result is purple—not black, as it would be with physical monochromatic filters. »
- Opacity works in both 2D and 3D graphics.
- It may take significantly longer to render 3D graphics that involve transparent surfaces.
- Graphics that involve transparency may need to be printed as high-resolution bitmaps.
- On many computer systems, objects with opacity a will appear completely transparent if a is too small. »
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