UIImageView and CGRectIntersectRect

[bublen]

Hi everybody, I have a question not so easy to explain. I try and sorry for my bad english

I have 2 UIImageViews which size are 50x50 and 60x60 pixel.

I use CGRectIntersectRect method to determinate when one image touches the other. but these 2 images are 2 balls and sometimes code determinates that these images are touching themselves when "with your eyes" you can see they don't touch. This happens because balls don't "cover" all spaces of image. so same corners of images are clear, but of course code doesn't matter about this.

The question is: how can I solve? how can I determinate frame of images that follow perfectly the circonference of balls?

I hope it's clear.

Thanks to all,

hello

[rocotilos]

Use.. er.. i think it is called.. Pythogoras Theorem?

You are having balls, so it is easy to check more accurate collision, since the objects are circles.

for eg,

uiimageview ball1,ball2

dist = sqrt(ball1.posx*ball1.posx + ball2.posx*ball2.posx);

// then do same for disty

then they collide, when dist< (ball1.radius+ball2.radius).

[bublen]

Originally Posted by rocotilos

Use.. er.. i think it is called.. Pythogoras Theorem?

You are having balls, so it is easy to check more accurate collision, since the objects are circles.

for eg,

uiimageview ball1,ball2

dist = sqrt(ball1.posx*ball1.posx + ball2.posx*ball2.posx);

// then do same for disty

then they collide, when dist< (ball1.radius+ball2.radius).

I just say balls for example

[rocotilos]

but these 2 images are 2 balls

You are saying they are balls. And not an "example".

You need to be specific when asking questions because answers
will vary according to your details. If you have a character of a person
instead, then I can't help u. If it is just circles, then that's the answer
I posted before.

Pls state your question properly next time.

[bublen]

Originally Posted by rocotilos

You are saying they are balls. And not an "example".

You need to be specific when asking questions because answers
will vary according to your details. If you have a character of a person
instead, then I can't help u. If it is just circles, then that's the answer
I posted before.

Pls state your question properly next time.

Yes sorry, I didn't think to that. Does anyone know how can I solve if we're talking about 2 characters?