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This is an example of a collision mesh. A collision mesh is used by the physics engines to calculate
the dynamic interactions of the part with the physical environment. It is part of the rigid body used in the biomechanical model.
The mesh that will be draw on
the screen (graphical mesh) is outlined in black. The mesh that will be
used for collision testing (collision mesh) is outlined in pink. Notice
how many faces are in the graphical mesh and how many are in the collision mesh.
Figure 1: A snapshot from Blender showing both the graphical mesh used for drawing and the
collision mesh used for physics computation
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