hi guys. I'm a newbie and learning physx 3.2.2.
Now i meet a problem that I use PxTriangleMesh function to create a simple cube. We have also used PxSphereGeometry function and created a sphere. We create also a plane. The sphere can successfully drops down, touch the plane and stop, but the cube which created by triangle mesh directly fall down and over the plane. There may be something wrong with the collision detection part but I don't know why and how.
Here is the code that create the cube with triangle mesh:
// create triangle mesh
PxTransform transform(PxVec3(0.0f, 15.0f, 0.0f), PxQuat::createIdentity());
PxRigidDynamic *actor = gPhysicsSDK->createRigidDynamic(transform);
//actor->setRigidDynamicFlag(PxRigidDynamicFlag::eKINEMATIC,true);
if (!actor)
cerr<<"create actor failed!"<<endl;
PxTriangleMeshDesc meshDesc;
PxVec3 data[8]={
PxVec3(-1.0,-1.0,-1.0),
PxVec3(1.0,-1.0,-1.0),
PxVec3(-1.0,1.0,-1.0),
PxVec3(1.0,1.0,-1.0),
PxVec3(-1.0,-1.0,1.0),
PxVec3(1.0,-1.0,1.0),
PxVec3(-1.0,1.0,1.0),
PxVec3(1.0,1.0,1.0)
};
PxU32 indices[12*3] = {
1,2,3,
0,2,1,
5,7,6,
4,5,6,
5,4,1,
1,4,0,
1,3,5,
3,7,5,
3,2,7,
2,6,7,
2,0,6,
4,6,0
};
meshDesc.points.count = 8;
meshDesc.points.stride = sizeof(PxVec3);
meshDesc.points.data = data;
meshDesc.triangles.count = 12;
meshDesc.triangles.stride = 3 * sizeof(PxU32);
meshDesc.triangles.data = indices;
meshDesc.flags = PxMeshFlags(0);
PxToolkit::MemoryOutputStream writeBuffer;
PxCookingParams cookingP;
cookingP.suppressTriangleMeshRemapTable = true;
cookingP.buildTriangleAdjacencies = true;
cooking->setParams(cookingP);
bool status = cooking->cookTriangleMesh(meshDesc, writeBuffer);
if(!status)
cerr<<"fail cooking";
PxToolkit::MemoryInputData readBuffer(writeBuffer.getData(), writeBuffer.getSize());
PxTriangleMesh* triangleMesh = gPhysicsSDK->createTriangleMesh(readBuffer);
PxTriangleMeshGeometry geom(triangleMesh);
PxShape *aTriMeshShape = actor->createShape(geom, *mMaterial,PxTransform(PxVec3(0.0f, 0.0f, 0.0f), PxQuat::createIdentity()));
actor->setAngularDamping(0.0);
actor->setLinearVelocity(PxVec3(0,-1.0,0));
actor->setLinearVelocity(PxVec3(0,-1.0f,0), true);
actor->userData = (void*) 1;
actor->setRigidDynamicFlag(PxRigidDynamicFlag::eUSE_KINEMATIC_TARGET_FOR_SCENE_QUERIES,true);
actor->setActorFlag(PxActorFlag::eVISUALIZATION,true);
gScene->addActor(*actor);
thank you!! I add " actor->setRigidDynamicFlag(PxRigidDynamicFlag::eKINEMATIC,true); " to change the triangle dynamic actor to kinematic actor, I use boxgeometry create a set of cubes and those are the dynamic actors. Then use them to hit kinematic actor--triangle mesh cube. The kinematic actor cube can intercept dynamic actor cubes, it seems that the collision detection happened, but now a new problem appeared, the kinematic actor cube can not fall down, it just hang on the air even though I have set the kinematic target and linear velocity. So what's the problem here?
