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#include "UnityPrefix.h"
#if ENABLE_PHYSICS
#include "SpringJoint.h"
#include "PhysicsManager.h"
#include "Runtime/Serialize/TransferFunctions/SerializeTransfer.h"
#include "External/PhysX/builds/SDKs/Physics/include/NxPhysics.h"
using namespace std;
namespace Unity
{
#define GET_JOINT() static_cast<NxDistanceJoint*> (m_Joint)
/*
- We awake the hingejoint only once. (AwakeFromLoad)
At this point we setup the axes. They are never changed afterwards
-> The perfect solution remembers the old position/rotation of the rigid bodies.
Then when changing axis/anchor is changed it generates axes that are rleative to the old position/rotation state!
*/
SpringJoint::SpringJoint (MemLabelId label, ObjectCreationMode mode)
: Super(label, mode)
{
}
SpringJoint::~SpringJoint ()
{
}
void SpringJoint::Reset()
{
Super::Reset();
m_MinDistance = 0.0F;
m_MaxDistance = 0.5F;
m_Spring = 2;
m_Damper = 0.2f;
}
void SpringJoint::Create ()
{
AssertIf (!IsActive ());
NxDistanceJointDesc desc;
if (m_Joint && m_Joint->getState () == NX_JS_SIMULATING)
GET_JOINT()->saveToDesc (desc);
desc.spring.spring = m_Spring;
desc.spring.damper = m_Damper;
if (desc.minDistance < m_MaxDistance)
{
desc.minDistance = m_MinDistance;
desc.maxDistance = m_MaxDistance;
}
else
{
desc.minDistance = m_MaxDistance;
desc.maxDistance = m_MinDistance;
}
desc.flags |= NX_DJF_SPRING_ENABLED | NX_DJF_MAX_DISTANCE_ENABLED | NX_DJF_MIN_DISTANCE_ENABLED;
FINALIZE_CREATE (desc, NxDistanceJointDesc);
}
void SpringJoint::SetSpring (float spring)
{
m_Spring = spring;
SetDirty();
if (GET_JOINT() != NULL)
{
NxDistanceJointDesc desc;
GET_JOINT()->saveToDesc (desc);
desc.spring.spring = m_Spring;
GET_JOINT()->loadFromDesc (desc);
}
}
void SpringJoint::SetDamper(float damper)
{
m_Damper = damper;
SetDirty();
if (GET_JOINT() != NULL)
{
NxDistanceJointDesc desc;
GET_JOINT()->saveToDesc (desc);
desc.spring.damper = m_Damper;
GET_JOINT()->loadFromDesc (desc);
}
}
void SpringJoint::SetMinDistance(float distance)
{
m_MinDistance = distance;
SetDirty();
if (GET_JOINT() != NULL)
{
NxDistanceJointDesc desc;
GET_JOINT()->saveToDesc (desc);
if (desc.minDistance < m_MaxDistance)
{
desc.minDistance = m_MinDistance;
desc.maxDistance = m_MaxDistance;
}
else
{
desc.minDistance = m_MaxDistance;
desc.maxDistance = m_MinDistance;
}
GET_JOINT()->loadFromDesc (desc);
}
}
void SpringJoint::SetMaxDistance(float distance)
{
m_MaxDistance = distance;
SetDirty();
if (GET_JOINT() != NULL)
{
NxDistanceJointDesc desc;
GET_JOINT()->saveToDesc (desc);
if (desc.minDistance < m_MaxDistance)
{
desc.minDistance = m_MinDistance;
desc.maxDistance = m_MaxDistance;
}
else
{
desc.minDistance = m_MaxDistance;
desc.maxDistance = m_MinDistance;
}
GET_JOINT()->loadFromDesc (desc);
}
}
IMPLEMENT_AXIS_ANCHOR(SpringJoint,NxDistanceJointDesc)
template<class TransferFunction>
void SpringJoint::Transfer (TransferFunction& transfer)
{
JointTransferPreNoAxis(transfer);
TRANSFER_SIMPLE (m_Spring);
TRANSFER_SIMPLE (m_Damper);
TRANSFER_SIMPLE (m_MinDistance);
TRANSFER_SIMPLE (m_MaxDistance);
JointTransferPost (transfer);
}
#undef GET_JOINT
}
IMPLEMENT_CLASS (SpringJoint)
IMPLEMENT_OBJECT_SERIALIZE (SpringJoint)
#endif //ENABLE_PHYSICS
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