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refactor constraint serialization, so that double precision is maintained,

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changes are backwards compatible (btBulletWorldImporter can load old .bullet files)
but not forwards compatible (constraints in new .bullet files are ignored/unrecognized by old Bullet SDK)
This commit is for Issue 734. Some more work needs to be done for btGImpactMeshShapeDoubleData and thus btStridingMeshInterfaceDoubleData and btMeshPartDoubleData
This commit is contained in:
erwin.coumans
2013-09-14 06:08:50 +00:00
parent e94a2137b0
commit 1aac33f6b6
16 changed files with 1523 additions and 665 deletions
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44
src/BulletDynamics/ConstraintSolver/btSliderConstraint.h
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@@ -25,7 +25,13 @@ TODO:
#ifndef BT_SLIDER_CONSTRAINT_H
#define BT_SLIDER_CONSTRAINT_H
#ifdef BT_USE_DOUBLE_PRECISION
#define btSliderConstraintData2 btSliderConstraintDoubleData
#define btSliderConstraintDataName "btSliderConstraintDoubleData"
#else
#define btSliderConstraintData2 btSliderConstraintData //not btSliderConstraintFloatData for backward compatibility
#define btSliderConstraintDataName "btSliderConstraintData" //not "btSliderConstraintFloatData" for backward compatibility
#endif //BT_USE_DOUBLE_PRECISION
#include "LinearMath/btVector3.h"
#include "btJacobianEntry.h"
@@ -286,7 +292,7 @@ public:
///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64
struct btSliderConstraintData
{
btTypedConstraintData m_typeConstraintData;
btTypedConstraintFloatData m_typeConstraintData;
btTransformFloatData m_rbAFrame; // constraint axii. Assumes z is hinge axis.
btTransformFloatData m_rbBFrame;
@@ -301,32 +307,48 @@ struct btSliderConstraintData
};
struct btSliderConstraintDoubleData
{
btTypedConstraintDoubleData m_typeConstraintData;
btTransformDoubleData m_rbAFrame; // constraint axii. Assumes z is hinge axis.
btTransformDoubleData m_rbBFrame;
double m_linearUpperLimit;
double m_linearLowerLimit;
double m_angularUpperLimit;
double m_angularLowerLimit;
int m_useLinearReferenceFrameA;
int m_useOffsetForConstraintFrame;
};
SIMD_FORCE_INLINE int btSliderConstraint::calculateSerializeBufferSize() const
{
return sizeof(btSliderConstraintData);
return sizeof(btSliderConstraintData2);
}
///fills the dataBuffer and returns the struct name (and 0 on failure)
SIMD_FORCE_INLINE const char* btSliderConstraint::serialize(void* dataBuffer, btSerializer* serializer) const
{
btSliderConstraintData* sliderData = (btSliderConstraintData*) dataBuffer;
btSliderConstraintData2* sliderData = (btSliderConstraintData2*) dataBuffer;
btTypedConstraint::serialize(&sliderData->m_typeConstraintData,serializer);
m_frameInA.serializeFloat(sliderData->m_rbAFrame);
m_frameInB.serializeFloat(sliderData->m_rbBFrame);
m_frameInA.serialize(sliderData->m_rbAFrame);
m_frameInB.serialize(sliderData->m_rbBFrame);
sliderData->m_linearUpperLimit = float(m_upperLinLimit);
sliderData->m_linearLowerLimit = float(m_lowerLinLimit);
sliderData->m_linearUpperLimit = m_upperLinLimit;
sliderData->m_linearLowerLimit = m_lowerLinLimit;
sliderData->m_angularUpperLimit = float(m_upperAngLimit);
sliderData->m_angularLowerLimit = float(m_lowerAngLimit);
sliderData->m_angularUpperLimit = m_upperAngLimit;
sliderData->m_angularLowerLimit = m_lowerAngLimit;
sliderData->m_useLinearReferenceFrameA = m_useLinearReferenceFrameA;
sliderData->m_useOffsetForConstraintFrame = m_useOffsetForConstraintFrame;
return "btSliderConstraintData";
return btSliderConstraintDataName;
}