All Questions
Tagged with projections mathematics
6
questions
1
vote
3
answers
500
views
What projection matrix and world transformation do I need to have an isometric projection?
I'm doing my own engine in college to display a wireframe on screen with an isometric projection but I literally can't find any literature about maths behind doing it by hand just for game engines ...
- 111
2
votes
1
answer
256
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Is it possible to make a projection matrix to not project in the center?
I have the following projection matrix:
and I need to make a hole in the center of my matrix, something like that: (I don't want to project a custom W and H)
Is that possible ? Thanks.
- 23
0
votes
1
answer
66
views
Moving a vertex through the cursor
There is a way to move a selected point in a mesh with a cursor(assuming a camera that doesn;t change between frames).
The way I remember the algorithm (but seems to be wrong) is:
Unproject the ...
- 1,736
1
vote
0
answers
253
views
Model View Projection Matrix Multiplcation Order
I'm working on a simple software renderer and have a working implementation so far. I'm curious as to why it's actually working since I would expect the multiplication ordering for my world, view and ...
- 11
1
vote
0
answers
90
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Why does my self-written rendering engine make further away objects look larger?
I am writing a very simple rendering engine. I have already made a few tests, but somehow the images it creates look wrong. Objects that are further away from the camera look larger than objects ...
- 111
9
votes
2
answers
3k
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How am I able to perform perspective projection without a near plane?
I'm learning about 3D computer graphics, but I'm having a hard time understanding why the near plane of a viewing frustum can not be placed at z position $0$ (right at the camera).
I can understand ...
