how can I get a pixel from a triImage?

[Heimdall]

I'm trying to use the triengine but I'm facing a dump problem when trying to read a simple pixel from the image.

I've load a png image, the image format reports it is IMG_FORMAT_8888 and the bits per pixel are 32. Now when i try to read a pixel in order to get it's color using:

triImage *collision = triImageLoadPng("collisionMap.png");

int bgColor = ((triU32*) collision->data)[collision->width
* y + x];

I'm geting wrong data (0 when it should be some gray value), what am i doing wrong?

[Torch]

Not a solution but shouldn't bgColor be unsigned 32 bit?

And put parentheses around color->data as well. Cast applies only to the parent structure on the left otherwise and not to 'data'.

[dridri]

I dont know the triEngine, but is there any colision->textureWidth ? or ->twidth ?

If yes, then :
triU32 bgColor = ((triU32*) collision->data)[collision->textureWidth * y +x];

[Heimdall]

yes i just went out for dinner and realized that i should be using image->stride instead of width. stride is the texture width on the triImage structure.

Thanks!