# Questions tagged [camera]

Game worlds are viewed from a camera, which is the viewpoint from which the game world is observed from.

908 questions
2k views

### 3D camera implementation

I've been bashing my head against the concept of a 'camera' for my 3D world for some time now, and I'm not sure I'm doing this right anymore. Maybe I've been working on this for too long and have ...
2k 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 ...
8k views

### Camera Rotation using angles

I currently try to rotate a camera (using gluLookAt()) around a point , i successfully do it for rotating around one global axis. But when i want to use more than one axis , I'm stuck . I've ...
509 views

### Size of the world and clipping area

I have a 32x32x32 cube (I say 32 because that's the size of the texture). I can make the vertices of this cube go from (0,0,0) to (32,32,32). This mean the camera will be moving += 1 when ever a key ...
1k views

### FPS Camera Look Direction

I'm using XNA to create an FPS camera that uses a Direction vector instead of a Target vector control the camera's orientation. I'm having trouble with the math for looking up and down when the ...
4k views

### Camera field of view: 3D projections & trigonometry

Okay, here goes. I have a camera at (Xc, Yc, Zc.) The Xc and Yc coordinates are latitude/longitude, and the Zc coordinate is an altitude in metres. I have a point at (Xp, Yp, Zp) and a field of view ...