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How do I intersect two bezier paths?

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How do I intersect two bezier paths?

Subject: How do I intersect two bezier paths?
From: Scott Ellsworth <email@hidden>
Date: Thu, 1 Sep 2005 16:42:55 -0700

Hi, all.

I want to draw a partially filled circle. The path to fill is the intersection of

[worldCircle appendBezierPathWithArcWithCenter:NSMakePoint (centerX, centerY) radius:outerRadius startAngle:0.0 endAngle:360.0]; [worldCircle closePath];

and

centerY += 2*outerRadius*ratio; NSRect destRect = NSMakeRect(centerX-outerRadius, centerY- outerRadius, 2*outerRadius, 2*outerRadius); [worldCircle appendBezierPathWithRect:destRect];

I have looked through the basic drawing section of the docs, and it appears that I do this via the clip rect. Is that the best way to approach it?

(I am going to be drawing perhaps five hundred of these critters in a typical screen.)

Scott
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