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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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79
src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.h
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@@ -40,6 +40,15 @@ and swing 1 and 2 are along the z and y axes respectively.
#include "btJacobianEntry.h"
#include "btTypedConstraint.h"
#ifdef BT_USE_DOUBLE_PRECISION
#define btConeTwistConstraintData2 btConeTwistConstraintDoubleData
#define btConeTwistConstraintDataName "btConeTwistConstraintDoubleData"
#else
#define btConeTwistConstraintData2 btConeTwistConstraintFloatData
#define btConeTwistConstraintDataName "btConeTwistConstraintFloatData"
#endif //BT_USE_DOUBLE_PRECISION
class btRigidBody;
enum btConeTwistFlags
@@ -296,6 +305,48 @@ public:
};
///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64
struct btConeTwistConstraintFloatData
{
btTypedConstraintFloatData m_typeConstraintData;
btTransformFloatData m_rbAFrame;
btTransformFloatData m_rbBFrame;
//limits
float m_swingSpan1;
float m_swingSpan2;
float m_twistSpan;
float m_limitSoftness;
float m_biasFactor;
float m_relaxationFactor;
float m_damping;
char m_pad[4];
};
struct btConeTwistConstraintDoubleData
{
btTypedConstraintDoubleData m_typeConstraintData;
btTransformDoubleData m_rbAFrame;
btTransformDoubleData m_rbBFrame;
//limits
double m_swingSpan1;
double m_swingSpan2;
double m_twistSpan;
double m_limitSoftness;
double m_biasFactor;
double m_relaxationFactor;
double m_damping;
};
#ifdef BT_BACKWARDS_COMPATIBLE_SERIALIZATION
///this structure is not used, except for loading pre-2.82 .bullet files
struct btConeTwistConstraintData
{
btTypedConstraintData m_typeConstraintData;
@@ -315,12 +366,12 @@ struct btConeTwistConstraintData
char m_pad[4];
};
#endif //BT_BACKWARDS_COMPATIBLE_SERIALIZATION
//
SIMD_FORCE_INLINE int btConeTwistConstraint::calculateSerializeBufferSize() const
{
return sizeof(btConeTwistConstraintData);
return sizeof(btConeTwistConstraintData2);
}
@@ -328,21 +379,21 @@ SIMD_FORCE_INLINE int btConeTwistConstraint::calculateSerializeBufferSize() cons
///fills the dataBuffer and returns the struct name (and 0 on failure)
SIMD_FORCE_INLINE const char* btConeTwistConstraint::serialize(void* dataBuffer, btSerializer* serializer) const
{
btConeTwistConstraintData* cone = (btConeTwistConstraintData*) dataBuffer;
btConeTwistConstraintData2* cone = (btConeTwistConstraintData2*) dataBuffer;
btTypedConstraint::serialize(&cone->m_typeConstraintData,serializer);
m_rbAFrame.serializeFloat(cone->m_rbAFrame);
m_rbBFrame.serializeFloat(cone->m_rbBFrame);
m_rbAFrame.serialize(cone->m_rbAFrame);
m_rbBFrame.serialize(cone->m_rbBFrame);
cone->m_swingSpan1 = float(m_swingSpan1);
cone->m_swingSpan2 = float(m_swingSpan2);
cone->m_twistSpan = float(m_twistSpan);
cone->m_limitSoftness = float(m_limitSoftness);
cone->m_biasFactor = float(m_biasFactor);
cone->m_relaxationFactor = float(m_relaxationFactor);
cone->m_damping = float(m_damping);
cone->m_swingSpan1 = m_swingSpan1;
cone->m_swingSpan2 = m_swingSpan2;
cone->m_twistSpan = m_twistSpan;
cone->m_limitSoftness = m_limitSoftness;
cone->m_biasFactor = m_biasFactor;
cone->m_relaxationFactor = m_relaxationFactor;
cone->m_damping = m_damping;
return "btConeTwistConstraintData";
return btConeTwistConstraintDataName;
}