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2D effect for a 3D object with 3D camera
Hi, I want to use a 2D distortion object on my 3D cube, and (it wasn’t complicated enough)I’ve got a camera. For this, I need the position, and the size of my object on the screen.
I’m too tired to do the math, and it’s really difficult – camera position, rotation, orientation + object position, rotation, orientation… google doesn’t help. Maybe you know a secret place, where I can find the expression for this. 🙂
Thank you!
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2 Replies
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Hi
find 3DM_3d_2_2d.jsx for that or use “PB 3D to 2D Positions.jsx”
you can attach any 2d pbject on 3d.thanks
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One possible idea is to attach a 3D null to each corner of the cube and calculate their 2D positions, then derive the bounding box from the x and y minimum and maximum values of the nulls.
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