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fix the issue that compound objects's child does not get rotated in the material space in interpolationWorldTransform

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This commit is contained in:
Xuchen Han
2019-08-13 16:59:42 -07:00
parent 07bf736aeb
commit fce1296413
3 changed files with 12 additions and 5 deletions
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8
src/BulletCollision/CollisionDispatch/btCollisionObjectWrapper.h
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@@ -27,11 +27,17 @@ public:
const btCollisionShape* m_shape; const btCollisionShape* m_shape;
const btCollisionObject* m_collisionObject; const btCollisionObject* m_collisionObject;
const btTransform& m_worldTransform; const btTransform& m_worldTransform;
const btTransform* m_preTransform;
int m_partId; int m_partId;
int m_index; int m_index;
btCollisionObjectWrapper(const btCollisionObjectWrapper* parent, const btCollisionShape* shape, const btCollisionObject* collisionObject, const btTransform& worldTransform, int partId, int index) btCollisionObjectWrapper(const btCollisionObjectWrapper* parent, const btCollisionShape* shape, const btCollisionObject* collisionObject, const btTransform& worldTransform, int partId, int index)
: m_parent(parent), m_shape(shape), m_collisionObject(collisionObject), m_worldTransform(worldTransform), m_partId(partId), m_index(index) : m_parent(parent), m_shape(shape), m_collisionObject(collisionObject), m_worldTransform(worldTransform), m_preTransform(NULL), m_partId(partId), m_index(index)
{
}
btCollisionObjectWrapper(const btCollisionObjectWrapper* parent, const btCollisionShape* shape, const btCollisionObject* collisionObject, const btTransform& worldTransform, const btTransform& preTransform, int partId, int index)
: m_parent(parent), m_shape(shape), m_collisionObject(collisionObject), m_worldTransform(worldTransform), m_preTransform(&preTransform), m_partId(partId), m_index(index)
{ {
} }

2
src/BulletCollision/CollisionDispatch/btCompoundCollisionAlgorithm.cpp
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@@ -139,7 +139,7 @@ public:
if (TestAabbAgainstAabb2(aabbMin0, aabbMax0, aabbMin1, aabbMax1)) if (TestAabbAgainstAabb2(aabbMin0, aabbMax0, aabbMin1, aabbMax1))
{ {
btCollisionObjectWrapper compoundWrap(this->m_compoundColObjWrap, childShape, m_compoundColObjWrap->getCollisionObject(), newChildWorldTrans, -1, index); btCollisionObjectWrapper compoundWrap(this->m_compoundColObjWrap, childShape, m_compoundColObjWrap->getCollisionObject(), newChildWorldTrans, childTrans, -1, index);
btCollisionAlgorithm* algo = 0; btCollisionAlgorithm* algo = 0;
bool allocatedAlgorithm = false; bool allocatedAlgorithm = false;

7
src/BulletSoftBody/btSoftBody.cpp
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@@ -20,7 +20,7 @@ subject to the following restrictions:
#include "LinearMath/btSerializer.h" #include "LinearMath/btSerializer.h"
#include "BulletDynamics/Featherstone/btMultiBodyLinkCollider.h" #include "BulletDynamics/Featherstone/btMultiBodyLinkCollider.h"
#include "BulletDynamics/Featherstone/btMultiBodyConstraint.h" #include "BulletDynamics/Featherstone/btMultiBodyConstraint.h"
#include <iostream>
// //
btSoftBody::btSoftBody(btSoftBodyWorldInfo* worldInfo, int node_count, const btVector3* x, const btScalar* m) btSoftBody::btSoftBody(btSoftBodyWorldInfo* worldInfo, int node_count, const btVector3* x, const btScalar* m)
: m_softBodySolver(0), m_worldInfo(worldInfo) : m_softBodySolver(0), m_worldInfo(worldInfo)
@@ -2301,8 +2301,9 @@ bool btSoftBody::checkDeformableContact(const btCollisionObjectWrapper* colObjWr
const btCollisionObject* tmpCollisionObj = colObjWrap->getCollisionObject(); const btCollisionObject* tmpCollisionObj = colObjWrap->getCollisionObject();
// use the position x_{n+1}^* = x_n + dt * v_{n+1}^* where v_{n+1}^* = v_n + dtg for collision detect // use the position x_{n+1}^* = x_n + dt * v_{n+1}^* where v_{n+1}^* = v_n + dtg for collision detect
// but resolve contact at x_n // but resolve contact at x_n
const btTransform &wtr = (predict) ? tmpCollisionObj->getInterpolationWorldTransform() : colObjWrap->getWorldTransform(); btTransform wtr = (predict) ?
(colObjWrap->m_preTransform != NULL ? tmpCollisionObj->getInterpolationWorldTransform()*(*colObjWrap->m_preTransform) : tmpCollisionObj->getInterpolationWorldTransform())
: colObjWrap->getWorldTransform();
btScalar dst = btScalar dst =
m_worldInfo->m_sparsesdf.Evaluate( m_worldInfo->m_sparsesdf.Evaluate(
wtr.invXform(x), wtr.invXform(x),