include/extensions/PxCustomGeometryExt.h

File members: include/extensions/PxCustomGeometryExt.h

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#ifndef PX_CUSTOM_GEOMETRY_EXT_H
#define PX_CUSTOM_GEOMETRY_EXT_H

#include "geometry/PxCustomGeometry.h"
#include "geometry/PxGjkQuery.h"

#if !PX_DOXYGEN
namespace physx
{
#endif

class PxGeometry;
class PxMassProperties;
class PxGeometryHolder;
struct PxContactPoint;

class PxCustomGeometryExt
{
public:

    struct BaseConvexCallbacks : PxCustomGeometry::Callbacks, PxGjkQuery::Support
    {
        BaseConvexCallbacks(float _margin) : margin(_margin) {}

        // override PxCustomGeometry::Callbacks
        virtual PxBounds3 getLocalBounds(const PxGeometry& geometry) const;
        virtual bool generateContacts(const PxGeometry& geom0, const PxGeometry& geom1, const PxTransform& pose0, const PxTransform& pose1,
            const PxReal contactDistance, const PxReal meshContactMargin, const PxReal toleranceLength,
            PxContactBuffer& contactBuffer) const;
        virtual PxU32 raycast(const PxVec3& origin, const PxVec3& unitDir, const PxGeometry& geom, const PxTransform& pose,
            PxReal maxDist, PxHitFlags hitFlags, PxU32 maxHits, PxGeomRaycastHit* rayHits, PxU32 stride, PxRaycastThreadContext*) const;
        virtual bool overlap(const PxGeometry& geom0, const PxTransform& pose0, const PxGeometry& geom1, const PxTransform& pose1, PxOverlapThreadContext*) const;
        virtual bool sweep(const PxVec3& unitDir, const PxReal maxDist,
            const PxGeometry& geom0, const PxTransform& pose0, const PxGeometry& geom1, const PxTransform& pose1,
            PxGeomSweepHit& sweepHit, PxHitFlags hitFlags, const PxReal inflation, PxSweepThreadContext*) const;
        virtual bool usePersistentContactManifold(const PxGeometry& geometry, PxReal& breakingThreshold) const;

        // override PxGjkQuery::Support
        virtual PxReal getMargin() const { return margin; }
        // set margin
        void setMargin(float m);

    protected:

        // Shape margin
        float margin;

        // Substitute geometry
        virtual bool useSubstituteGeometry(PxGeometryHolder& geom, PxTransform& preTransform, const PxContactPoint& p, const PxTransform& pose0) const = 0;
    };

    struct CylinderCallbacks : BaseConvexCallbacks
    {
        CylinderCallbacks(float height, float radius, int axis = 0, float margin = 0);

        void setHeight(float h);
        float getHeight() const { return height; }

        void setRadius(float r);
        float getRadius() const { return radius; }

        void setAxis(int a);
        int getAxis() const { return axis; }

        // override PxCustomGeometry::Callbacks
        DECLARE_CUSTOM_GEOMETRY_TYPE
        virtual void visualize(const PxGeometry&, PxRenderOutput&, const PxTransform&, const PxBounds3&) const;
        virtual void computeMassProperties(const PxGeometry& geometry, PxMassProperties& massProperties) const;

        // override PxGjkQuery::Support
        virtual PxVec3 supportLocal(const PxVec3& dir) const;

    protected:

        // Cylinder height
        float height;
        // Cylinder radius
        float radius;
        // Cylinder axis
        int axis;

        // Substitute geometry
        virtual bool useSubstituteGeometry(PxGeometryHolder& geom, PxTransform& preTransform, const PxContactPoint& p, const PxTransform& pose0) const;

        // Radius at height
        float getRadiusAtHeight(float height) const;
    };

    struct ConeCallbacks : BaseConvexCallbacks
    {
        ConeCallbacks(float height, float radius, int axis = 0, float margin = 0);

        void setHeight(float h);
        float getHeight() const { return height; }

        void setRadius(float r);
        float getRadius() const { return radius; }

        void setAxis(int a);
        int getAxis() const { return axis; }

        // override PxCustomGeometry::Callbacks
        DECLARE_CUSTOM_GEOMETRY_TYPE
        virtual void visualize(const PxGeometry&, PxRenderOutput&, const PxTransform&, const PxBounds3&) const;
        virtual void computeMassProperties(const PxGeometry& geometry, PxMassProperties& massProperties) const;

        // override PxGjkQuery::Support
        virtual PxVec3 supportLocal(const PxVec3& dir) const;

    protected:

        // Cone height
        float height;
        // Cone radius
        float radius;
        // Cone axis
        int axis;

        // Substitute geometry
        virtual bool useSubstituteGeometry(PxGeometryHolder& geom, PxTransform& preTransform, const PxContactPoint& p, const PxTransform& pose0) const;

        // Radius at height
        float getRadiusAtHeight(float height) const;
    };
};

// OmniPVD friendly aliases
typedef PxCustomGeometryExt::BaseConvexCallbacks PxCustomGeometryExtBaseConvexCallbacks;
typedef PxCustomGeometryExt::CylinderCallbacks PxCustomGeometryExtCylinderCallbacks;
typedef PxCustomGeometryExt::ConeCallbacks PxCustomGeometryExtConeCallbacks;

#if !PX_DOXYGEN
}
#endif

#endif