3d Perspective Corretion

Martijn · Post by **Martijn** » Sun Apr 10, 2005 8:31 am

Hello everyone!

I would like to now if someone could help me with finding some information about the perspective correction on the wireframe in 3D engine's.

I have googled for information about it for several hours but it looks like perspective correction has been intergrated in the intel CPU as I found nothing usefull.

If you could point me to the place in the IRRLight source code where the perspective correction is done I would be very pleased!

Or even better if you could provide me with an tutorial/doc about it!

Thanks in advance!

Martijn

PS: I am not looking for information about Perspective Texture Mapping. But the real correction on the wireframe.

saigumi · Post by **saigumi** » Sun Apr 10, 2005 11:08 am

Do you mean field of view, aspect ratio, and near/far plane adjustment? Or do you mean orthogonal?

Martijn · Post by **Martijn** » Sun Apr 10, 2005 1:52 pm

saigumi wrote:....field of view, aspect ratio, and near/far plane adjustmen?....

The effects normally done with vanishing points in drawings.

djceejay · Post by **djceejay** » Sun Apr 10, 2005 3:30 pm

I think Martijn means the matrix operation to projection/perspective coordinates - where points converge as they move further away from the camera.

The pipeline is:
local->world->camera->projection/perspective->clip->screen/rasterisation

Have a google for "graphics pipeline".

Martijn · Post by **Martijn** » Sun Apr 10, 2005 4:30 pm

Exactly djceejay.

I'll try your tip, thanks!

JoeWright · Post by **JoeWright** » Sun Apr 10, 2005 9:31 pm

Perspective transformation

Joe