Messages

1

Support / Re: Check texture alpha at RaycastHit...

« on: September 04, 2012, 11:02:37 am »

OK, I've figured it out in the meantime (and did it the way you suggest).

The problem that I am facing now is the following:

if I don't disable alpha trimming in atlas and the sprites get trimmed the following bug occurs:
1) sprite bounds are calculated for trimmed sprite - this is OK
2) but the gameobject.transform.InverseTransformPoint transforms according to the original, untrimmed size of the object.

This problem is shown here in detai:

2

Support / Check texture alpha at RaycastHit...

« on: August 31, 2012, 10:06:14 am »

Hi,

I'm trying to pick an object pixel-perfect. But I don't want mesh colliders of any kind on the object, because I have lot of theese objects. So what I want is to do Raycast and then check texture alpha value at RaycastHit position. But the problem is, the textureCoord field has value of (0;0) no matter where the hit occurs. This is due to the fact that the object has no mesh collider (according to Unity documentation).

How do I calculate UV values for the atlas texture and get the correct pixel alpha value at the hit position?