How to understand orthographic camera movement?

[Tricotou]

Hello

@renku

Is it that the orthoLeft etc properties are relative to the camera target coordinate?

Yes.

You can see the ortho camera as an infinite plane, with a center C :

Projecting the scene all parallel, along its normal. C will be the center of the image

In this context the image is “theorically” infinitely wide. So you have a 4 param to crop it :

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Then, when the camera moves, it changes only the point C (center of image), as well as the angle of the plane (and therefore, its normal projection vector).

So there is no reason for orthoLeft, etc … To change when you move the camera.