GuCookingTriangleMesh.h

// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//  * Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//  * Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//  * Neither the name of NVIDIA CORPORATION nor the names of its
//    contributors may be used to endorse or promote products derived
//    from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2022 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.  
 
#ifndef GU_COOKING_TRIANGLE_MESH_H
#define GU_COOKING_TRIANGLE_MESH_H
 
#include "GuMeshData.h"
#include "cooking/PxCooking.h"
 
namespace physx
{
    namespace Gu
    {
        class EdgeList;
    }
 
    class TriangleMeshBuilder
    {
        public:
                                            TriangleMeshBuilder(Gu::TriangleMeshData& mesh, const PxCookingParams& params);
        virtual                             ~TriangleMeshBuilder();
 
        virtual PxMeshMidPhase::Enum        getMidphaseID()                                 const   = 0;
        // Called by base code when midphase structure should be built
        virtual void                        createMidPhaseStructure()                               = 0;
 
        // Called by base code when midphase structure should be saved
        virtual void                        saveMidPhaseStructure(PxOutputStream& stream, bool mismatch)    const   = 0;
        // Called by base code when mesh index format has changed and the change should be reflected in midphase structure
        virtual void                        onMeshIndexFormatChange()                               {}
 
                bool                        cleanMesh(bool validate, PxTriangleMeshCookingResult::Enum* condition);
                void                        remapTopology(const PxU32* order);
        
                void                        createVertMapping();
                void                        createSharedEdgeData(bool buildAdjacencies, bool buildActiveEdges);
 
                void                        recordTriangleIndices();
                void                        createGRBMidPhaseAndData(const PxU32 originalTriangleCount);
                void                        createGRBData();
 
                bool                        loadFromDesc(const PxTriangleMeshDesc&, PxTriangleMeshCookingResult::Enum* condition, bool validate = false);
                
                bool                        save(PxOutputStream& stream, bool platformMismatch, const PxCookingParams& params) const;
                void                        checkMeshIndicesSize();
    PX_FORCE_INLINE Gu::TriangleMeshData&   getMeshData()   { return mMeshData; }
    protected:
                //void                      computeLocalBounds();
                bool                        importMesh(const PxTriangleMeshDesc& desc, const PxCookingParams& params, PxTriangleMeshCookingResult::Enum* condition, bool validate = false);
                
 
                bool                        loadFromDescInternal(PxTriangleMeshDesc&, PxTriangleMeshCookingResult::Enum* condition, bool validate = false);
 
                void                        buildInertiaTensor();
                void                        buildInertiaTensorFromSDF();
 
                TriangleMeshBuilder& operator=(const TriangleMeshBuilder&);
                Gu::EdgeList*               mEdgeList;
                const PxCookingParams&      mParams;
                Gu::TriangleMeshData&       mMeshData;
    };
 
    class RTreeTriangleMeshBuilder : public TriangleMeshBuilder
    {
        public:
                                            RTreeTriangleMeshBuilder(const PxCookingParams& params);
        virtual                             ~RTreeTriangleMeshBuilder();
 
        virtual PxMeshMidPhase::Enum        getMidphaseID() const   { return PxMeshMidPhase::eBVH33;    }
        virtual void                        createMidPhaseStructure();
        virtual void                        saveMidPhaseStructure(PxOutputStream& stream, bool mismatch)    const;
 
                Gu::RTreeTriangleData       mData;
    };
 
    class BV4TriangleMeshBuilder : public TriangleMeshBuilder
    {
        public:
                                            BV4TriangleMeshBuilder(const PxCookingParams& params);
        virtual                             ~BV4TriangleMeshBuilder();
 
        virtual PxMeshMidPhase::Enum        getMidphaseID() const   { return PxMeshMidPhase::eBVH34;    }
        virtual void                        createMidPhaseStructure();
        virtual void                        saveMidPhaseStructure(PxOutputStream& stream, bool mismatch)    const;
        virtual void                        onMeshIndexFormatChange();
 
                Gu::BV4TriangleData         mData;
    };
 
    class BV32TriangleMeshBuilder
    {
    public:
        static  void                        createMidPhaseStructure(const PxCookingParams& params, Gu::TriangleMeshData& meshData, Gu::BV32Tree& bv32Tree);
        static  void                        saveMidPhaseStructure(Gu::BV32Tree* tree, PxOutputStream& stream, bool mismatch);
    };
 
}
 
#endif