add concave shapes and Gears to 3D engine

[applePi]

i suggest a concave shapes for the physics engine so we can use Gears and holes dynamically, an example of a dynamic hole i have posted here before
http://www.purebasic.fr/english/viewtop ... 15#p414129
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concave = xCreateTorus(16, 1, 0.5)
xEntityAddConcaveShape(concave, 100.0)

a possible usage: a more natural approach than tranfering force like this
http://www.purebasic.fr/english/viewtop ... 36&t=55915

[DK_PETER]

+1

[Olby]

Bullet (physics engine used in PB) doesn't have a built in support for dynamic concave shapes. What you need instead is a dynamic compound object. These are built by combining a number of smaller primitives (spheres, cubes, cylinders, etc.) into one big physics collision body.

The btCompoundShape allows to store multiple other btCollisionShapes This allows for moving concave collision objects.

http://bulletphysics.com/Bullet/BulletF ... ml#details

[Bananenfreak]

+1