Real-Time Physics Simulation Forum 2011-10-18T03:25:14+00:00 https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/7543 2011-10-18T03:25:14+00:00 2011-10-18T03:25:14+00:00 https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=25880#p25880 <![CDATA[Least Distance Calculation Between Compound Shapes]]>
I am trying to use Bullet Engine to calculate the least distances between two objects. I do this using contactPairTest. This seems to work with two convex objects at least. However, when I try to find the minimum distance between a convex object and a compound shape, Bullet produces a segmentation fault. I know that Bullet can't compute the positive distance between a convex and a concave shape but seeing that a compound shape is composed of convex shapes, shouldn't finding the least distance between a compound and a convex shape be possible?

Thanks in advance!

Code: 

btDefaultCollisionConfiguration collisionConfiguration;btCollisionDispatcher dispatcher(&collisionConfiguration);btDbvtBroadphase pairCache;btCollisionWorld world(&dispatcher, &pairCache, &collisionConfiguration);world.getDispatchInfo().m_convexMaxDistanceUseCPT = true; MyContactResultCallback result; result.drawMinDistance = drawMinDistance;btCollisionObject obA;obA.setCollisionShape(bds[nodeID0]->shape);obA.setWorldTransform(*(bds[nodeID0]->transShapeAbsolute));btCollisionObject obB;obB.setCollisionShape(bds[nodeID1]->shape);obB.setWorldTransform(*(bds[nodeID1]->transShapeAbsolute));result.collisionWorld = collisionWorld;cout<<"calculating minimum distance"<<endl;world.contactPairTest(&obA, &obB, result);

Statistics: Posted by hintse — Tue Oct 18, 2011 3:25 am

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