0
votes
1answer
88 views

3D drawing precision problem. XNA

I have a simple scrolling camera positioned 2000 units about the 3D 'floor' that moves forward by 1 unit every frame and looks down on the floor at a point that also moves forward by 1 unit every ...
9
votes
4answers
2k views

Cast ray to select block in voxel game

I am developing a game with a Minecraft-like terrain made out of blocks. Since basic rendering and chunk loading is done now, I want to implement block selecting. Therefore I need to find out what ...
3
votes
1answer
5k views

3D Ray Casting / Picking

I am not sure if I should post this link, but I feel this falls into game development just as much as it does math. I have a ray cast's far and near values and I am trying to calculate the end point ...
3
votes
3answers
954 views

How to determine what triangle in a mesh the cursor is pointing to?

I have a game I'm working on in which items are "placed" and "selected". In order to do this, I need to determine what triangle in a mesh the cursor is pointing to. I have no trouble with getting ...