Difficulties when using the camera.

[suyufeng]

invalidateViewport();
invalidateVisualization();
deprecate3DLayer();

When I was sorting out the code, after seeing a lot of setcameraposs, I entered these three codes, and I couldn't understand what these three codes do. I have seen your comment, but I don't understand what it does.

[daniel]

It tells CC to recompute these various matrices / information the next time it will render the 3D view.

[suyufeng]

Thank you for your answer