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error 404 addOver | revDocs | RunRev
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Product Edition
Version
addOver
Basics
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Type
Keyword
Syntax
Introduced
1.0
Environment
Desktop, Web and Server
Platform Support
MacOS,Mac OS X
Security
None required
Summary
Specifies one of the transfer modes that can be used with the ink property.
Examples

set the ink of button 2 to addOver

Additional Comments
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Use the addOver keyword to combine an object's color with the colors underneath it.

Comments:

The ink property determines how an object's colors combine with the colors of the pixels underneath the object to control how the object's color is displayed. When the addOver mode is used, each component of the object color--red, green, and blue--is added to the corresponding component of the color underneath. If the result is greater than 255, the component rolls over, back to zero.

For example, suppose an object's color is 25,220,150, and the color of the pixels under the object is 60,40,100. If the addOver mode is used, the object's displayed color is 85,4,250.

The addOver mode can be used only on Mac OS systems. On Unix and Windows systems, objects whose ink property is set to this mode appears as though their ink were set to srcCopy.

User Comments
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