Hello all!

I've got a simple problem to which i can't find a simple answer...

PROBLEM: i'm developing a multitouch environment with the typical scale, rotate, move actions using OpenGL for speed. When i rotate an image and try to test if a finger (or TUIO cursor in this case) is on top of it i can't find a simple way of testing the intersection of the rotated rectangular bounding box with the cursor coordinates.

This could be easily solved using the Rectangle java2d object and it's contains(x, y) function, but in order to apply transforms to this Rectangle i need to cast PGraphicsOpenGL to Graphics2D, which unfortunately is impossible.  

So: how can i perform this test, in an easy way (ie. no separating axis theorem, vectors, etc) without having to choose PGraphics instead of PGraphicsOpenGL??

I'm hoping you coding wizards can help me solve this, since i've lost a whole working day struggling with this issue...

Thanks!
Pedro.

Obrigado!!

This is exactly what i needed! And since i have loads of objects at a time, i generated the color ids like this (might be useful for someone else!):

id = (int)random(0xFFFFFF) | 0xFF000000;

this way there's 16777216 different ids so there's a 0,000006% chance of repeating an id

Obrigadao Rui! E parabens pelo teu interface no moda lisboa, tive a ver o teu blog e curti mt!