hkpConvexShape.h
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- /*
- *
- * Confidential Information of Telekinesys Research Limited (t/a Havok). Not for disclosure or distribution without Havok's
- * prior written consent. This software contains code, techniques and know-how which is confidential and proprietary to Havok.
- * Level 2 and Level 3 source code contains trade secrets of Havok. Havok Software (C) Copyright 1999-2009 Telekinesys Research Limited t/a Havok. All Rights Reserved. Use of this software is subject to the terms of an end user license agreement.
- *
- */
- #ifndef HK_COLLIDE2_CONVEX_SHAPE_H
- #define HK_COLLIDE2_CONVEX_SHAPE_H
- #include <Physics/Collide/Shape/HeightField/hkpSphereRepShape.h>
- #include <Physics/Collide/Shape/hkpShapeContainer.h>
- class hkpCdVertex;
- extern const hkClass hkpConvexShapeClass;
- extern hkReal hkConvexShapeDefaultRadius;
- #define HK_W_NOT_SET_TO_VERTEX_ID "The function getSupportingVertex did not set the .w component of the supporting vertex to the vertex id using set3asUin16"
- /// An interface shape class that allows its implementations to work with GJK. It also holds an extra radius to allow for shells around objects.
- class hkpConvexShape : public hkpSphereRepShape
- {
- public:
- HK_DECLARE_REFLECTION();
- /// The GJK interface.
- /// Returns the vertex furthest along a given input direction.
- /// Each vertex must be identifyable by a 16bit vertex id, which must be stored in the result using hkVector4::setInt24W().
- HK_FORCE_INLINE void getSupportingVertex( hkVector4Parameter direction, hkpCdVertex& supportingVertexOut ) const;
- /// convert an array of input vertex id as returned by getSupportingVertex into an array of vertices
- /// The .w component of the vertices out has to be set to the vertex id using hkVector4::setInt24W
- HK_FORCE_INLINE void convertVertexIdsToVertices( const hkpVertexId* ids, int numIds, hkpCdVertex* vertixArrayOut) const ;
-
- /// Returns the first vertex of this shape. This is only used for initialization of collision detection data.
- /// it has to set the .w component of v to the vertex id using hkVector4::setInt24W
- virtual void getFirstVertex(hkVector4& v) const = 0;
- /// Gets the extra radius.
- /// The radius is used to create a thin "shell" around the object that is used as the shape's surface for collision detection purposes.
- /// This can improve performance, as calculations for shapes that are actually interpenetrating are much more time-consuming than for interpenetrating shells.
- inline hkReal getRadius() const;
- /// Sets the extra radius
- inline void setRadius(hkReal radius);
- virtual bool isConvex() const { return true; }
- enum WeldResult
- {
- WELD_RESULT_REJECT_CONTACT_POINT,
- WELD_RESULT_ACCEPT_CONTACT_POINT_MODIFIED,
- WELD_RESULT_ACCEPT_CONTACT_POINT_UNMODIFIED
- };
- /// Called internally to "weld" contact points. This is only called for convex objects that are in a shape collection.
- HK_FORCE_INLINE hkpConvexShape::WeldResult weldContactPoint( hkpVertexId* featurePoints, hkUint8& numFeaturePoints,
- hkVector4& contactPointWs, const hkTransform* thisObjTransform,
- const hkpConvexShape* collidingShape, const hkTransform* collidingTransform, hkVector4& separatingNormalInOut ) const;
-
- /// This function returns the center point of the convex object. This is used for welding calculations.
- HK_FORCE_INLINE void getCentre( hkVector4& centreOut ) const;
- //
- // hkpShape implementation
- //
- /// This is an implementation of the hkpShape::getMaximumProjection() function using getSupportingVertex.
- virtual hkReal getMaximumProjection( const hkVector4& direction ) const;
- /// This implementation of the callback driven castRay uses the data driven castRay function
- /// Implementation notes: For all convex shapes except hkSphere and hkCapsule the radius of the shape will be ignored.
- HKP_SHAPE_VIRTUAL void castRayWithCollectorImpl( HKP_SHAPE_VIRTUAL_THIS const hkpShapeRayCastInput& input, const hkpCdBody& cdBody, hkpRayHitCollector& collector ) HKP_SHAPE_VIRTUAL_CONST;
- protected:
- /// The GJK interface.
- /// Returns the vertex furthest along a given input direction.
- /// Each vertex must be identifyable by a 16bit vertex id, which must be stored in the result using hkVector4::setInt24W().
- HKP_SHAPE_VIRTUAL void getSupportingVertexImpl( HKP_SHAPE_VIRTUAL_THIS hkVector4Parameter direction, hkpCdVertex& supportingVertexOut ) HKP_SHAPE_VIRTUAL_CONST = 0;
- /// convert an array of input vertex id as returned by getSupportingVertex into an array of vertices
- /// The .w component of the vertices out has to be set to the vertex id using hkVector4::setInt24W
- HKP_SHAPE_VIRTUAL void convertVertexIdsToVerticesImpl( HKP_SHAPE_VIRTUAL_THIS const hkpVertexId* ids, int numIds, hkpCdVertex* vertixArrayOut) HKP_SHAPE_VIRTUAL_CONST = 0;
- /// Called internally to "weld" contact points. This is only called for convex objects that are in a shape collection.
- HKP_SHAPE_VIRTUAL int weldContactPointImpl( HKP_SHAPE_VIRTUAL_THIS hkpVertexId* featurePoints, hkUint8& numFeaturePoints, hkVector4& contactPointWs, const hkTransform* thisObjTransform, const hkpConvexShape* collidingShape, const hkTransform* collidingTransform, hkVector4& separatingNormalInOut ) HKP_SHAPE_VIRTUAL_CONST;
- /// This function returns the center point of the convex object. This is used for welding calculations.
- HKP_SHAPE_VIRTUAL void getCentreImpl( HKP_SHAPE_VIRTUAL_THIS hkVector4& centreOut ) HKP_SHAPE_VIRTUAL_CONST;
- protected:
- // The protected constructor which must be supplied with a type and a radius
- inline hkpConvexShape( hkpShapeType type, hkReal radius );
- hkReal m_radius;
- public:
- hkpConvexShape( hkFinishLoadedObjectFlag flag ) : hkpSphereRepShape(flag) { m_type = HK_SHAPE_CONVEX; }
- };
- class hkpConvexTransformShapeBase : public hkpConvexShape
- {
- public:
- //+vtable(true)
- //+abstract(1)
- HK_DECLARE_REFLECTION();
- // The protected constructor which must be supplied with a type and a radius
- hkpConvexTransformShapeBase( hkpShapeType type, hkReal radius, const hkpConvexShape* childShape, hkpShapeContainer::ReferencePolicy ref );
- hkpConvexTransformShapeBase( class hkFinishLoadedObjectFlag flag ) : hkpConvexShape(flag), m_childShape(flag) { }
- protected:
- void getChildShapeFromPpu(int thisShapeSize) const;
- class hkpSingleShapeContainer m_childShape;
- // 0 if the child shape is following this shape consecutively in memory, the size of the child shape otherwise
- mutable int m_childShapeSize; // +nosave
- };
- #include <Physics/Collide/Shape/Convex/hkpConvexShape.inl>
- #endif // HK_COLLIDE2_CONVEX_SHAPE_H
- /*
- * Havok SDK - NO SOURCE PC DOWNLOAD, BUILD(#20090216)
- *
- * Confidential Information of Havok. (C) Copyright 1999-2009
- * Telekinesys Research Limited t/a Havok. All Rights Reserved. The Havok
- * Logo, and the Havok buzzsaw logo are trademarks of Havok. Title, ownership
- * rights, and intellectual property rights in the Havok software remain in
- * Havok and/or its suppliers.
- *
- * Use of this software for evaluation purposes is subject to and indicates
- * acceptance of the End User licence Agreement for this product. A copy of
- * the license is included with this software and is also available at www.havok.com/tryhavok.
- *
- */