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Asked: 2026-05-26T20:50:39+00:00

I’m a beginner in quartz. I’m wonderring a way that recognize if CGPoint is

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I’m a beginner in quartz.

I’m wonderring a way that recognize if CGPoint is included in shape.

Please give me a help of Expert.

Follow is concept diagram.

enter image description here

In above three case,
Result I want is YES, Because three RED CGPoint is included in shape.

It is possible like follow way?

CGPoint RedPoint1 = {200,100};
CGPoint RedPoint2 = {200,200};
CGPoint RedPoint3 = {350,300};

BOOL includeRect;
includeRect = CGRectContainsPoint(RectCase, RedPoint1);

BOOL includeCircle;
includeCircle = CG ? ContainsPoint(CircleCase, RedPoint2)

BOOL includeBoldLine;
includeBoldLine = CG ? ContainsPoint(BoldLineCase, RedPoint3);
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1 Answer

  1. Editorial Team

    The ease of this all depends on how your shapes are defined.

    If you have these as CGPathRefs or NSBezierPaths there is a containsPoint: method you could use.

    If these are CGRects that have a transform applied to them, you can use the CGAffineTransformPoint methods to move the point into the same coordinate space and then use CGRectContainsPoint

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