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Editorial Team
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Asked: 2026-05-14T04:34:14+00:00

In my UIView’s drawRect, there’s a parameter rect, which is a CGRect, where would

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In my UIView’s drawRect, there’s a parameter rect, which is a CGRect, where would I change this rect?

I’d like to use it as a camera for a game that I am making,

such as

rect.origin.x = myCamera.x;
rect.origin.y = myCamera.y;

and then my drawing functions should draw it where the camera is placed…

How would I change the rect?

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1 Answer

  1. Editorial Team

    You can’t control this value. The underlying framework decides what area of the view needs to be drawn and sets the value accordingly.

    You can call setNeedsDisplayinRect: and the framework might pass the rect you supply as the rect parameter to drawRect, but there are no guarantees, AFAIK.

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