hkpShapeShrinker.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_UTILS_SHAPE_SHRINKER__H
- #define HK_UTILS_SHAPE_SHRINKER__H
- class hkpShape;
- class hkpBoxShape;
- class hkpCylinderShape;
- class hkpConvexVerticesShape;
- /// This utility class shrinks convex objects that use convex radius (box, cyl, convexvertices)
- /// by the convex radius (the padding radius). Triangles and collections of triangles that
- /// have radius are not altered. It will return a new shape if one was created.
- /// It will return NULL if no new shape was required as the shape was able to be altered in
- /// place or did not have a radius. This function is recursive. Note that this is not meant to be
- /// done at runtime, but in the tool chain and preprocess stages.
- class hkpShapeShrinker
- {
- public:
- /// Struct used by hkpShapeShrinker::shrinkByConvexRadius().
- struct ShapePair
- {
- HK_DECLARE_NONVIRTUAL_CLASS_ALLOCATOR( HK_MEMORY_CLASS_UTILITIES, hkpShapeShrinker::ShapePair );
- /// Old shape.
- hkpShape* originalShape;
- /// New shape. Null if not new.
- hkpShape* newShape;
- };
- /// This will try to shrink the given shape. The returned shape is not NULL only when
- /// a new shape is created, since this isn't always the case. For instance, if the shape
- /// is just a box, it will just have its extents changed and the shape pointer remains
- /// the same. On the other hand, a convex vertices shape needs to be recreated to be
- /// altered, so it will change, as will lists of shapes that have changed etc.
- /// If you are doing multiple shrink calls and you have shared shapes that are
- /// shrinkable, you might want to provide an array to persist between calls
- /// to stop the shapes from being shrunk more than once. If you don't provide a
- /// cache then one will be used per call internally, so multiple calls will
- /// result in possible over-shrinking on shared shapes.
- static hkpShape* HK_CALL shrinkByConvexRadius( hkpShape* s, hkArray<ShapePair>* doneShapes);
- /// Internal helper to shrink box shape
- static hkpBoxShape* HK_CALL shrinkBoxShape( hkpBoxShape* boxShape, hkReal relShrinkRadius, hkReal allowedDisplacement );
- /// Internal helper to shrink cylinder shape
- static hkpCylinderShape* HK_CALL shrinkCylinderShape( hkpCylinderShape* cylinderShape, hkReal relShrinkRadius, hkReal allowedDisplacement );
- /// Internal helper to shrink convex vertices shape
- static hkpConvexVerticesShape* HK_CALL shrinkConvexVerticesShape( hkpConvexVerticesShape* boxShape, hkReal relShrinkRadius, hkReal allowedDisplacement );
- };
- #endif // HK_UTILS_SHAPE_SHRINKER__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.
- *
- */