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3d beam effect using expressions
I need a beam effect in 3d space instead of 2d space.
3d comp. Camera is tracking past 2 shapes. I want to draw a line between them as the camera passes them . I want to use the position of the 2 shapes to define the start and end point of the line/beam.
Can this be done with an expression?
Something that converts 3d position of object plus camera position to 2d position?
Or find the central point between the two shapes and orientate /rotate a very thin layer to go between them?
Beyond my maths capabilities…. Anyone done this before?
Trying to avoid tracking in 2d as there are actually MANY shapes that I want to do this with..
Cheers
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2 Replies
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Should have searched the forum more thoroughly.
Just adapt the expression from here.
The cow just saved me a day’s work. Sweet!
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Create 2 nulls (I’ll call one SPoint and the other EPoint). Apply the following to the Starting Point position:
L = thisComp.layer(“SPoint”);
L.toComp (L.anchorPoint);And just change the first line to L = thisComp.layer(“EPoint”); in the Ending Point and you are done!
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