Soft-Body Objects fall apart
Posted: Fri Sep 23, 2016 9:45 am
I'm trying to create a simple Soft-Body plane-shape, which works great, except for the collisions:
https://youtu.be/PO6sNKpmRfA
On contact, the entire thing just falls apart triangle by triangle. It's a nice effect, but not exactly what I'm aiming for...
What could be causing that? Here's my code for the creation of the soft-body object:
https://youtu.be/PO6sNKpmRfA
On contact, the entire thing just falls apart triangle by triangle. It's a nice effect, but not exactly what I'm aiming for...
What could be causing that? Here's my code for the creation of the soft-body object:
Code: Select all
PhysSoftBody *PhysEnv::CreateSoftBody(const std::vector<Vector3> &verts,const std::vector<uint16_t> &indices)
{
btAlignedObjectArray<btVector3> vtx;
vtx.reserve(verts.size());
for(auto &v : verts)
vtx.push_back({v.x *PhysEnv::WORLD_SCALE,v.y *PhysEnv::WORLD_SCALE,v.z *PhysEnv::WORLD_SCALE});
auto *psb = new btSoftBody(m_softBodyWorldInfo.get(),vtx.size(),&vtx[0],0);
auto *pm = psb->appendMaterial();
pm->m_kLST = 0.55;
pm->m_kAST = 0.2;
pm->m_kVST = 0.55;
for(auto i=decltype(indices.size()){0};i<indices.size();i+=3)
{
psb->appendLink(indices[i +2],indices[i],pm,true);
psb->appendLink(indices[i],indices[i +1],pm,true);
psb->appendLink(indices[i +1],indices[i +2],pm,true);
psb->appendFace(indices[i],indices[i +1],indices[i +2],pm);
}
psb->generateBendingConstraints(2,pm);
psb->m_cfg.piterations = 2;
psb->m_cfg.collisions |= btSoftBody::fCollision::VF_SS;
psb->randomizeConstraints();
Vector3 origin {471.f,68.f,82.f};
btTransform trans;
trans.setIdentity();
trans.setOrigin(uvec::create_bt(origin) *PhysEnv::WORLD_SCALE);
psb->transform(trans);
psb->setTotalMass(1.0,true);
psb->generateClusters(64);
m_btWorld->addSoftBody(psb);
auto *softBody = new PhysSoftBody(this,psb);
softBody->Initialize();
AddSoftBody(softBody);
return softBody;
}