genesis-3d_engine/Engine/graphicsystem/Projector/CollisionModel.cc

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

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

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#ifndef __PROJECTOR_COMMIT__
#include "stdneb.h"
#include "CollisionModel.h"
#include "resource/meshres.h"
#include "rendersystem/base/PrimitiveGroup.h"
#include "rendersystem/base/VertexBuffer.h"
#include "rendersystem/base/IndexBuffer.h"
#include "resource/resourcemanager.h"

#define ICE_NO_DLL
#if __ANDROID__
#include <OPCODEA/Opcode.h>
#elif __WIN32__
#include <OPCODE/Opcode.h>
#elif __OSX__
#include "Opcode.h"
#endif
namespace Graphic
{

	class OpModelImp
	{
		Opcode::Model             m_OpModel;
		Opcode::MeshInterface     m_OpMeshInterface;

		friend class CollisionModel;
	};

	__ImplementClass(CollisionModel, 'CLMD', Core::RefCounted);

	CollisionModel::CollisionModel()
		: m_pOpModelImp(NULL),
		m_nMemoryUsage(0),
		m_bIndex16(true)
	{

	}

	CollisionModel::~CollisionModel()
	{
		n_delete(m_pOpModelImp);
		m_pOpModelImp = NULL;

		m_Vertices.Clear();
		m_Indices.Clear();
		m_FaceNormals.Clear();
		m_nMemoryUsage = 0;
	}

	const Opcode::Model& CollisionModel::GetOpCodeModel() const
	{
		return m_pOpModelImp->m_OpModel;
	}

	void CollisionModel::SetPrimitveInfo( const Util::String& name)
	{
		// TODO : ά<><CEAC>Mesh<73><68><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
		GPtr<Resources::PrimitiveResInfo> primitiveResInfo = Resources::ResourceManager::Instance()->CreatePrimitiveInfo(name, 0);

		if (primitiveResInfo.isvalid())
		{
			const GPtr<Resources::MeshRes>& meshRes = primitiveResInfo->GetRes().downcast<Resources::MeshRes>();

			if (meshRes.isvalid() && meshRes->GetState() == Resources::Resource::Loaded)
			{
				Resources::PositionData::Elem* pPosData = meshRes->GetVertexData<Resources::PositionData>();
				SizeT vertexCount = meshRes->GetVertexCount();

				m_Vertices.Resize( vertexCount, Math::float3(0.0f, 0.0f, 0.0f));

				for (IndexT iVert = 0; iVert < vertexCount; ++iVert)
				{
					m_Vertices[iVert] = Math::float3( pPosData[iVert].x(), pPosData[iVert].y(), pPosData[iVert].z());
				}

				const Resources::Index16Container::value_type* pIndex16;
				const Resources::Index32Container::value_type* pIndex32;

				SizeT indexCount = meshRes->GetIndexCount();
				m_Indices.Resize(indexCount, 0);

				if (indexCount > 65535)
				{
					pIndex32 = meshRes->GetIndex32();

					for (IndexT i = 0; i < indexCount; ++i)
					{
						m_Indices[i] = pIndex32[i];
					}
				} 
				else
				{
					pIndex16 = meshRes->GetIndex16();

					for (IndexT i = 0; i < indexCount; ++i)
					{
						m_Indices[i] = static_cast<uint>(pIndex16[i]);
					}
				}
			}
		}

		primitiveResInfo = NULL;
	}

	void CollisionModel::CreateOpModel()
	{
		m_pOpModelImp = n_new(OpModelImp);

		m_pOpModelImp->m_OpMeshInterface.SetNbVertices(m_Vertices.Size());
		m_pOpModelImp->m_OpMeshInterface.SetNbTriangles(m_Indices.Size() / 3);
		m_pOpModelImp->m_OpMeshInterface.SetPointers(
			reinterpret_cast<const IceMaths::IndexedTriangle*>(&m_Indices[0]),
			reinterpret_cast<const IceMaths::Point*>(&m_Vertices[0])
			);

		if (! m_pOpModelImp->m_OpMeshInterface.IsValid() )
		{
			n_error("Opcode MeshInterface is invalid!");
		}

		Opcode::OPCODECREATE buildInfo;
		buildInfo.mIMesh            = &m_pOpModelImp->m_OpMeshInterface;
		buildInfo.mSettings.mLimit  = 1;
		buildInfo.mSettings.mRules  = Opcode::SPLIT_BALANCED | Opcode::SPLIT_GEOM_CENTER;
		buildInfo.mNoLeaf           = true;
		buildInfo.mQuantized        = true;
		buildInfo.mKeepOriginal     = false;
		buildInfo.mCanRemap         = false;

		if (! m_pOpModelImp->m_OpModel.Build(buildInfo))
		{
			n_error("Can not build Opcode Model");
		}

		// Compute triangle face normals
		SizeT numTriangles = m_Indices.Size() / 3;
		m_FaceNormals.Reserve(numTriangles);
		for ( SizeT i = 0; i < numTriangles; ++i)
		{
			const Math::float3& v0 = m_Vertices[m_Indices[i*3 + 0]];
			const Math::float3& v1 = m_Vertices[m_Indices[i*3 + 1]];
			const Math::float3& v2 = m_Vertices[m_Indices[i*3 + 2]];

			m_FaceNormals.Append(
				Math::float3::calculateFaceNormalWithoutNormalize(v0,v1,v2));
		}

		// Calculate used memory
		m_nMemoryUsage = m_pOpModelImp->m_OpModel.GetUsedBytes() +
			m_Vertices.Size() * sizeof(Math::float3) +
			m_FaceNormals.Size() * sizeof(m_FaceNormals[0]) +
			m_Indices.Size()  * m_bIndex16 ? sizeof(uint16) : sizeof(uint);
	}

}
#endif // __PROJECTOR_COMMIT__