Search found 8 matches

by ananas
Fri Nov 21, 2014 10:22 pm
Forum: General Bullet Physics Support and Feedback
Topic: hampered rotation
Replies: 0
Views: 2301

hampered rotation

I have a btCompoundShape obtained from a appHACDDemo (and Convex Decomposition tool) after processing a concave mesh. I attached three cuboids (btConvexHull's) to the rim of the rotating wheel (the decomposed shape) by using btGeneric6DofConstraint's and set angular and linear limits to 0 to make th...
by ananas
Sat Sep 28, 2013 8:58 pm
Forum: General Bullet Physics Support and Feedback
Topic: sphere attached with a rope to a rotating wheel
Replies: 2
Views: 6125

Re: sphere attached with a rope to a rotating wheel

Erwin Coumans wrote:The two-way interaction might not work properly between rigid body and soft body.

You could try to replace the rope with rigid body spheres attached by btPoint2PointConstraint.
Thanks for the advice. I will try it out.
by ananas
Fri Sep 27, 2013 9:30 pm
Forum: General Bullet Physics Support and Feedback
Topic: sphere attached with a rope to a rotating wheel
Replies: 2
Views: 6125

sphere attached with a rope to a rotating wheel

Hi all, There is a wheel rigid body orientated vertically, with a constraint set on its central axis on some height over ground. There is also a sphere rigid body attached with a rope soft body to a single point on the rim of the wheel. If I set angular velocity to the wheel rigid body everything lo...
by ananas
Sun Jun 16, 2013 9:09 pm
Forum: Applications, Games, Demos or Movies using Bullet
Topic: appHACDDemo (and Convex Decomposition tool)
Replies: 21
Views: 35389

Re: appHACDDemo (and Convex Decomposition tool)

After increasing nClusters param my mesh got decomposed succesfuly. But collission of the two btCompoundShapes produced by the HACDdemo has malfunctions - objects penetrate each other and intensive shaking occurs. The issue doesn't appear when I test collision of this btCompoundShape with btConvexHu...
by ananas
Fri Jun 14, 2013 9:35 pm
Forum: General Bullet Physics Support and Feedback
Topic: btCompoundShape - btCompoundShape collision - penetration
Replies: 0
Views: 2095

btCompoundShape - btCompoundShape collision - penetration

Hi all, I am testing collision of two mug shapes created with HACD convex decomposition. In a result the two objects penetrate each other and shake. But when I assign btConvexHullShape to one of the objects the collision looks well. Are there some limitations regarding collisions of two compound sha...
by ananas
Mon Jun 03, 2013 9:05 pm
Forum: Applications, Games, Demos or Movies using Bullet
Topic: appHACDDemo (and Convex Decomposition tool)
Replies: 21
Views: 35389

Re: appHACDDemo (and Convex Decomposition tool)

I've manged to successfully compile and launch HACDdemo, but I am struggling with decomposition of a torus-like mesh. I see that BulletDefaultTorusMesh.off gets decomposed properly for all but one objects in the torus demo, but if I replace it with my torus mesh created in blender with "spin" tool, ...
by ananas
Tue May 07, 2013 8:38 pm
Forum: Applications, Games, Demos or Movies using Bullet
Topic: appHACDDemo (and Convex Decomposition tool)
Replies: 21
Views: 35389

Re: appHACDDemo (and Convex Decomposition tool)

I did the suggested modifications but the application hangs up in the middle of the first demo. Nevertheless, I realized that bullet2.81 also includes ConvexDecomposition demo. I replaced the mesh shipped with the bullet demo with my "mug" mesh. Unfortunately convex decomposition seems not to work p...
by ananas
Wed Apr 24, 2013 8:13 pm
Forum: Applications, Games, Demos or Movies using Bullet
Topic: appHACDDemo (and Convex Decomposition tool)
Replies: 21
Views: 35389

Re: appHACDDemo (and Convex Decomposition tool)

I was trying to compile the HACDDemo against bullet2.81, but I got following compilation errors: HACDDemo.cpp:110: error: ‘const class btCollisionObject’ has no member named ‘getRootCollisionShape’ HACDDemo.cpp:119: error: ‘const class btCollisionObject’ has no member named ‘getRootCollisionShape’ H...