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-   -   Opacity of a grouped image (http://forums.omnigroup.com/showthread.php?t=31456)

MrNiceGuy 2014-04-15 09:20 PM

Opacity of a grouped image
 
Simple scenario: Draw a filled circle of some size, then draw another filled circle of a smaller size, and center the smaller circle inside the bigger circle. You now have a "stylized" letter O, except for the center part - which is filled.

My question is: How do I make the outer union of the two circles filled, while the center part is clear, i.e. transparent? I can set the opacity of either circle, but it doesn't do what I want. I want the smaller circle to essentially "cut out" the inner part of the bigger circle.

Andrew 2014-04-19 10:36 AM

"Edit -> Shapes -> Subtract Shapes" should let you "cut" the inner circle out of the outer one.

ronb 2014-05-07 11:01 PM

[QUOTE=Andrew;130189]"Edit -> Shapes -> Subtract Shapes" should let you "cut" the inner circle out of the outer one.[/QUOTE]

This is definitely the way to go if you've got an Omnigraffle Pro license. If not you'll have to hack your way to something. Either just use a really fat line around a single circle instead of a filled shape, or manually draw a shape that curves around itself to form a donut. (hard to describe in words but hopefully that makes sense)


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