genesis-3d_engine/Engine/app/physXfeature/physicsCore/PhysicsBoxShape.cc

/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU

http://www.genesis-3d.com.cn

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#if __USE_PHYSX__ || __GENESIS_EDITOR__
#include "stdneb.h"
#include "appframework/actor.h"
#include "PhysicsBoxShape.h"
#include "PhysicsMaterial.h"
#include "PhysicsUtil.h"
#include "PhysicsServer.h"
#include "PxShape.h"
#include "PxBoxGeometry.h"
#include "PxRigidActor.h"
#include "PxGeometry.h"
#include "PxMat44.h"
#include "PxVec3.h"
#include "physXfeature/PhysicsBodyComponent.h"
using namespace physx;
using namespace App;
namespace App
{
	__ImplementClass(App::PhysicsBoxShape, 'PYSB', App::PhysicsShape);


	PhysicsBoxShape::PhysicsBoxShape()
		:m_Dimension(1.0f,1.0f,1.0f)
		,m_ActorScale(1.0f,1.0f,1.0f)
	{
		m_ShapeType = BOXSHAPE;
	}

	PhysicsBoxShape::~PhysicsBoxShape()
	{
		OnDestory();
	}

	bool PhysicsBoxShape::OnCreate(GPtr<PhysicsBodyComponent> component)
	{
		m_ActorScale = component->GetActor()->GetWorldScale();
		if (m_bInheritActor)
		{
			OnResize(component->GetActor()->GetLocalBoundingBox());
			m_bInheritActor = false;
		}
		Math::float3 _realDimension = _GetRealDemension() / 2;
		m_pGeometry = new PxBoxGeometry(Math::n_max(_realDimension.x(), 0.1f), Math::n_max(_realDimension.y(), 0.1f), Math::n_max(_realDimension.z(), 0.1f));
		n_assert(m_pGeometry)
			return true;
	}

	void PhysicsBoxShape::OnResize(const Math::bbox& bb)
	{
		const Math::bbox& _box = bb;
		Math::vector _value = _box.size();
		if (!Math::n_nearequal(_value.length(),0.0f,0.001f))
		{
			m_Dimension.set(_value.x(), _value.y(), _value.z());
		}
		Math::vector _center(_box.center().x(), _box.center().y(), _box.center().z());
		_value = _center*m_ActorScale;
		m_Center.set(_value.x(), _value.y(), _value.z());
	}

	void PhysicsBoxShape::SetDimension( const Math::float3& dimension )
	{
		if ( m_Dimension == dimension )
		{
			return;
		}
		m_Dimension = dimension.abs();

		if (m_pGeometry)
		{
			SetDimensionDo(_GetRealDemension());
		}
	}

	//------------------------------------------------------------------------
	void PhysicsBoxShape::SetDimensionDo( const Math::float3& dimension )
	{
		PxVec3 nxV3(dimension.x(),dimension.y(),dimension.z());
		if (m_pGeometry && m_pGeometry->getType() == PxGeometryType::eBOX)
		{
			PxBoxGeometry* pBoxShape = static_cast<PxBoxGeometry*>(m_pGeometry);
			n_assert(pBoxShape);
			pBoxShape->halfExtents = nxV3 / 2;
			if ( m_pShape && m_pShape->getGeometryType() == m_pGeometry->getType() )
			{
				m_pShape->setGeometry(*m_pGeometry);
				m_bMassUpdate = true;
			}
		}
	}
	//------------------------------------------------------------------------
	void PhysicsBoxShape::CreateRenderShape()
	{
	}
	//------------------------------------------------------------------------
	bool PhysicsBoxShape::CopyFrom( const GPtr<PhysicsShape>& pShape )
	{
		if ( !pShape.isvalid() || pShape->GetType() != m_ShapeType )
		{
			return false;
		}
		Super::CopyFrom(pShape);
		SetDimension(pShape.downcast<PhysicsBoxShape>()->GetDimension());
		return true;
	}

	Math::scalar PhysicsBoxShape::CaculateVolume()
	{
		Math::float3 dim = GetDimension();
		return dim.x()*dim.y()*dim.z()*8;
	}

	void PhysicsBoxShape::ScaleWithActor(const Math::vector& scale)
	{
		m_ActorScale = scale;
		SetDimensionDo(_GetRealDemension());
	}

	Math::float3 PhysicsBoxShape::_GetRealDemension()
	{
		Math::float3 _scale;
		_scale.x() = Math::n_abs(m_ActorScale.x()* m_Dimension.x());
		_scale.y() = Math::n_abs(m_ActorScale.y()* m_Dimension.y());
		_scale.z() = Math::n_abs(m_ActorScale.z()* m_Dimension.z());
		_scale.x() = Math::n_nearequal(_scale.x(), 0.0f, MinPrecision)? MinPrecision:_scale.x();
		_scale.y() = Math::n_nearequal(_scale.y(), 0.0f, MinPrecision)? MinPrecision:_scale.y();
		_scale.z() = Math::n_nearequal(_scale.z(), 0.0f, MinPrecision)? MinPrecision:_scale.z();

		return _scale;
	}

	void PhysicsBoxShape::Save( AppWriter* pSerialize )
	{
		Super::Save(pSerialize);
		pSerialize->SerializeFloat3("Dimension", m_Dimension);
	}

	void PhysicsBoxShape::Load( Version ver, AppReader* pReader )
	{
		Super::Load(ver,pReader);
		pReader->SerializeFloat3("Dimension", m_Dimension);
	}

	bool PhysicsBoxShape::IsGeometryValid()
	{
		return IsValid() && ((PxBoxGeometry*)m_pGeometry)->isValid();
	}

}
#endif