# Tagged Questions

86 views

### How do I compute the point of a triangle-ray intersection?

I have a line (the direction vector of the player) and a triangle representing the face of a model (so composed of 3 points). I can't find the mathematical operation to check if that vector is ...
73 views

### Tennis game algorithm and maths

Tennis courts are real dimensions and game is 3D Ball has position (x,y,z), speed(vx,vy,vz) and acceleration (ax,ay,az) Game has 30 fps and on each update (1/30sec) it has these properties vx +=ax; ...
187 views

### Performing intersection testing in world's or object's space?

Am adding basic ray casting and collision detection for my game, also adding bounding volumes/collision mesh. Given that the ray is cast in world space and each mesh's node can track world ...
303 views

### How can I remove the view and projection matrix from ray position to get only the ray model?

I've got a little problem with my picking module and I need your help. I have a method to project a ray from the camera to a fixed point when I click somewhere. The computed ray looks good, it go to ...
408 views

### Fast method of detecting whether point is inside mesh

I'm trying to construct a 3d object from a large number of particles. I think this is called BVH (Bounding volume hierarchy). I figured the best way is to draw the particles inside the mesh, then let ...