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Asked: 2026-06-11T17:44:13+00:00

Total newbie question about XNA (probably 3D in general). When I render a simple

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Total newbie question about XNA (probably 3D in general).

When I render a simple Blender made cube using the following code everything looks good: 

proj = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(90), 800f / 480f, 1f, 4000.0f);
view = Matrix.CreateLookAt(new Vector3(0, 0, -10), new Vector3(0, 0, 10), Vector3.Up);
world = Matrix.CreateTranslation(new Vector3(0, 0, 0));

But when I change the world’s X value to 9 (or any other value that moves it fairly off center) the cube stretches horizontally and looks terrible:

This links shows the problem:

What I am doing wrong to get that stretching? Thanks in advance for any help on this!

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1 Answer

  1. Editorial Team

    You can reduce the perspective distortion by using a narrower field of view. Try using, say, a 45 degree angle instead of a 90 degree angle. Since this “zooms in”, you will have to place the viewMatrix further away to compensate.

    edit: I just tried out how much “perspective” distortion you get with a 45 degree angle of view. I’m not sure I see any problematic distortion here.

    enter image description here

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