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PxCooking.h

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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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#ifndef PX_COOKING_H
#define PX_COOKING_H

#include "common/PxPhysXCommonConfig.h"
#include "common/PxTolerancesScale.h"
#include "cooking/Pxc.h"

#include "cooking/PxConvexMeshDesc.h"
#include "cooking/PxTriangleMeshDesc.h"
#include "cooking/PxMidphaseDesc.h"
#include "geometry/PxTriangleMesh.h"

#if !PX_DOXYGEN
namespace physx
{
#endif

class PxBinaryConverter;
class PxPhysicsInsertionCallback;
class PxFoundation;

struct PX_DEPRECATED PxPlatform
{
    enum Enum
    {
        ePC,
        eARM
    };
};

PX_DEPRECATED PX_FORCE_INLINE PxU32 PxGetGaussMapVertexLimitForPlatform(PxPlatform::Enum targetPlatform)
{
    PX_ASSERT_WITH_MESSAGE( (targetPlatform >= PxPlatform::ePC) && 
                            (targetPlatform <= PxPlatform::eARM),
                            "Unexpected platform in PxGetGaussMapVertexLimitForPlatform");

    PxU32 limit = 0;
    switch(targetPlatform)
    {
        case PxPlatform::ePC:
            limit = 32;     break;
        case PxPlatform::eARM:
            limit = 32;     break;
    }
    return limit;
}

struct PxConvexMeshCookingResult
{
    enum Enum
    {
        eSUCCESS,

        eZERO_AREA_TEST_FAILED,

        ePOLYGONS_LIMIT_REACHED,

        eFAILURE
    };
};

struct PxConvexMeshCookingType
{
    enum Enum
    {
        eINFLATION_INCREMENTAL_HULL PX_DEPRECATED = 0,

        eQUICKHULL
    };
};

struct PxTriangleMeshCookingResult
{
    enum Enum
    {
        eSUCCESS            = 0,

        eLARGE_TRIANGLE,

        eFAILURE
    };
};

struct PxMeshPreprocessingFlag
{
    enum Enum
    {
        eWELD_VERTICES                  =   1 << 0, 

        eDISABLE_CLEAN_MESH                             =   1 << 1, 

        eDISABLE_ACTIVE_EDGES_PRECOMPUTE                =   1 << 2,

        eFORCE_32BIT_INDICES                            =   1 << 3
    };
};

typedef PxFlags<PxMeshPreprocessingFlag::Enum,PxU32> PxMeshPreprocessingFlags;

struct PxCookingParams
{
    PxPlatform::Enum    targetPlatform;
    PX_DEPRECATED float     skinWidth;

    float       areaTestEpsilon;

    PxConvexMeshCookingType::Enum convexMeshCookingType;

    bool        suppressTriangleMeshRemapTable;

    bool        buildTriangleAdjacencies;

    bool        buildGPUData;

    PxTolerancesScale scale;

    PxMeshPreprocessingFlags    meshPreprocessParams;

    PX_DEPRECATED PxMeshCookingHint::Enum           meshCookingHint;

    PX_DEPRECATED PxF32 meshSizePerformanceTradeOff;

    PxReal      meshWeldTolerance;

    PxMidphaseDesc midphaseDesc;

    PxU32   gaussMapLimit;

    PxCookingParams(const PxTolerancesScale& sc):
        skinWidth                       (0.025f*sc.length),
        areaTestEpsilon                 (0.06f*sc.length*sc.length),
        convexMeshCookingType           (PxConvexMeshCookingType::eQUICKHULL),
        suppressTriangleMeshRemapTable  (false),
        buildTriangleAdjacencies        (false),
        buildGPUData                    (false),
        scale                           (sc),
        meshPreprocessParams            (0),
        meshCookingHint                 (PxMeshCookingHint::eSIM_PERFORMANCE),
        meshSizePerformanceTradeOff     (0.55f),
        meshWeldTolerance               (0.f)
    {
#if PX_INTEL_FAMILY
        targetPlatform = PxPlatform::ePC;
#elif PX_ARM_FAMILY
        targetPlatform = PxPlatform::eARM;
#else
#error Unknown platform
#endif
        gaussMapLimit = PxGetGaussMapVertexLimitForPlatform(targetPlatform);
    }
};

class PxCooking
{
public:
    virtual void  release() = 0;

    virtual void  setParams(const PxCookingParams& params) = 0;

    virtual const PxCookingParams& getParams() = 0;

    virtual bool  platformMismatch() = 0;

    virtual bool  cookTriangleMesh(const PxTriangleMeshDesc& desc, PxOutputStream& stream, PxTriangleMeshCookingResult::Enum* condition = NULL) = 0;

    virtual PxTriangleMesh*    createTriangleMesh(const PxTriangleMeshDesc& desc, PxPhysicsInsertionCallback& insertionCallback) = 0;

    virtual bool  validateTriangleMesh(const PxTriangleMeshDesc& desc) = 0;

    virtual bool  cookConvexMesh(const PxConvexMeshDesc& desc, PxOutputStream& stream, PxConvexMeshCookingResult::Enum* condition = NULL) = 0;

    virtual PxConvexMesh*    createConvexMesh(const PxConvexMeshDesc& desc, PxPhysicsInsertionCallback& insertionCallback) = 0;

    virtual bool  validateConvexMesh(const PxConvexMeshDesc& desc) = 0;


    virtual bool  computeHullPolygons(const PxSimpleTriangleMesh& mesh, PxAllocatorCallback& inCallback, PxU32& nbVerts, PxVec3*& vertices,
                                            PxU32& nbIndices, PxU32*& indices, PxU32& nbPolygons, PxHullPolygon*& hullPolygons) = 0;

    virtual bool  cookHeightField(const PxHeightFieldDesc& desc, PxOutputStream& stream) = 0;

    virtual PxHeightField*    createHeightField(const PxHeightFieldDesc& desc, PxPhysicsInsertionCallback& insertionCallback) = 0;


protected:
    virtual ~PxCooking(){}
};

#if !PX_DOXYGEN
} // namespace physx
#endif

PX_C_EXPORT PX_PHYSX_COOKING_API physx::PxCooking* PX_CALL_CONV PxCreateCooking(physx::PxU32 version,
                                                                                physx::PxFoundation& foundation,
                                                                                const physx::PxCookingParams& params);

#endif

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