I would like to create an instancedMesh that can handle morphing. I need morph targets because each instance should have different shape so morph targets seems handy. Also each instance should detect rays because I need mouse events on each instance.
instancedMesh is needed because I want to draw large number of objects with the same material but different size.
Mesh approach
First I create a mesh with a geometry that has morph targets to make sure the morphing works as it expected.
The base geometry have four morph targets top, bottom, left and right. Each morph target just move the edges in the given direction.
I manually calculated the boundingBox and boundingSphere to be able to detect cursor on the morphed parts.
InstancedMesh approach
With a single mesh works well the morphing however if I try to use the same geometry it does not work the same.
First issue
Only the original geometry can detect ray intersection. It was a problem on the first example as well but I manually calculated the boundingBox and boundingSphere which is fixed the problem. On instancedMesh does not matter if I change the bounds or not it will work the same.
The first rectangle is the original geometry shape. The second rectangle top and bottom morph targets is 0.5. That means moves the top and bottom edges with 0.5 on the y axes.
Second issue
When I move the second instance out of the original bounding box it somehow still detects ray in the original geometry shape.
My question is how can I detect rays on instancedMesh in morphed parts? My desired result should be a solution that works the same as the first example.
My stackoverflow question: https://stackoverflow.com/q/79566244/19284873