How to realize two point perspective such as formit

Questions
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1

How to realize two point perspective such as formit？every vertical line parallel
projection matrix？
cameracontrol？
THANKS！！！ :grinning:

2pp
2pp1600×905 141 KB

2

The projection matrix and its inverse matrix are managed within the camera. If you need a custom projection, the best approach might be to define a new type of camera with updateProjectionMatrix method that prepares the matrix the way you need. Of course, you need some Math to get the correct values in the matrix.

3

Look for offset properties. You need to skew the perspective matrix.

https://threejs.org/docs/#api/en/cameras/PerspectiveCamera.setViewOffset

1 Like
4

THANKS
but i dont find 2 point perspective ProjectionMatrix from online
terrible :dizzy_face:

5

this property can skew the perspective matrix？Can you show me some demo？
THANKS！

6

Here are the canonical matrices of 1-, 2- and 3-point perspectives:
https://people.eecs.berkeley.edu/~barsky/perspective.html

But you still need some math, in order to adjust the values, based on the actual frustum size.