CGPoint inside CGImageRef

Question

Can I know if a CGPoint is inside a CGImageRef? Or I should convert CGImageRef in other format?

UPDATE

maskcontext = CGBitmapContextCreate(currentM, w, 
                                               h,
                                               bitsPerComponent, bytesPerRow, colorSpace,
                                               kCGImageAlphaNone);
maskImage = CGBitmapContextCreateImage(maskcontext);

where currentM is an unsigned char, maskcontext is a CGContextRef and maskImage is a CGImageRef and I want to know its rect.

I have a cgimageref where I color this image; and I want to know when i touch the device; if the touch is inside this cgimageref or not — cyclingIsBetter, Mar 08 '12 at 09:51

score 2 · Accepted Answer · answered Mar 08 '12 at 09:51

2

Can you get the frame of your image? Then you could do:

CGRectContainsPoint ( CGRect rect, CGPoint point )

To see if that point is inside that frame.

answered Mar 08 '12 at 09:51

Antonio MG

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Your image has to be inside of some view or something, take it from there – Antonio MG Mar 08 '12 at 09:59
I don't know how to do it...can you help me? – cyclingIsBetter Mar 08 '12 at 10:03
Yes, tell me how do you draw the image and I will tell you how to get the frame – Antonio MG Mar 08 '12 at 10:05
w and h are the withd and the hegith of your image, so you can create a CGRect frame with that and the X and Y of the origing, do you know what are they? – Antonio MG Mar 08 '12 at 10:27

CGPoint inside CGImageRef

1 Answers1