Zooming in and out in Direct3D

I have a 3D scene and I want to开发者_运维问答 be able to zoom in and out. What implementations are good, and which has some flaws? Will I be changing viewport, clipping panes? I totally don't know.

Thanks

If you want a camera-like zoom, just change the camera viewing angle. This is usually set to around 45 degrees, but making it smaller will zoom into the image.

I think "zooming" refers to adjusting the view of a 2d image.

In a 3d scene I do not know what you mean with zooming. Probably moving the camera is what you are looking for? http://www.toymaker.info/Games/html/camera.html