Implement meshing for Capsule2d
#11639
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Jondolf
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# Objective The `Capsule2d` primitive was added in bevyengine#11585. It should support meshing like the other 2D primitives. ## Solution Implement meshing for `Capsule2d`. It doesn't currently support "rings" like Bevy's `Capsule` shape (not `Capsule3d`), but it does support resolution to control the number of vertices used for one hemicircle. The total vertex count is two times the resolution; if we allowed setting the full vertex count, odd numbers would lead to uneven vertex counts for the top and bottom hemicircles and produce potentially unwanted results. The capsule looks like this (with UV visualization and wireframe) using resolutions of 16, 8, and 3:    The `2d_shapes` example now includes the capsule, so we also get one more color of the rainbow 🌈 
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Objective
The
Capsule2dprimitive was added in #11585. It should support meshing like the other 2D primitives.Solution
Implement meshing for
Capsule2d.It doesn't currently support "rings" like Bevy's
Capsuleshape (notCapsule3d), but it does support resolution to control the number of vertices used for one hemicircle. The total vertex count is two times the resolution; if we allowed setting the full vertex count, odd numbers would lead to uneven vertex counts for the top and bottom hemicircles and produce potentially unwanted results.The capsule looks like this (with UV visualization and wireframe) using resolutions of 16, 8, and 3:
The
2d_shapesexample now includes the capsule, so we also get one more color of the rainbow 🌈