44 lines
1.9 KiB
C++
44 lines
1.9 KiB
C++
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#ifndef BT_INTERNAL_EDGE_UTILITY_H
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#define BT_INTERNAL_EDGE_UTILITY_H
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#include "LinearMath/btHashMap.h"
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#include "LinearMath/btVector3.h"
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#include "BulletCollision/CollisionShapes/btTriangleInfoMap.h"
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///The btInternalEdgeUtility helps to avoid or reduce artifacts due to wrong collision normals caused by internal edges.
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///See also http://code.google.com/p/bullet/issues/detail?id=27
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class btBvhTriangleMeshShape;
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class btCollisionObject;
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struct btCollisionObjectWrapper;
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class btManifoldPoint;
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class btIDebugDraw;
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class btHeightfieldTerrainShape;
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enum btInternalEdgeAdjustFlags
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{
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BT_TRIANGLE_CONVEX_BACKFACE_MODE = 1,
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BT_TRIANGLE_CONCAVE_DOUBLE_SIDED = 2, //double sided options are experimental, single sided is recommended
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BT_TRIANGLE_CONVEX_DOUBLE_SIDED = 4
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};
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///Call btGenerateInternalEdgeInfo to create triangle info, store in the shape 'userInfo'
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void btGenerateInternalEdgeInfo(btBvhTriangleMeshShape* trimeshShape, btTriangleInfoMap* triangleInfoMap);
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void btGenerateInternalEdgeInfo(btHeightfieldTerrainShape* trimeshShape, btTriangleInfoMap* triangleInfoMap);
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///Call the btFixMeshNormal to adjust the collision normal, using the triangle info map (generated using btGenerateInternalEdgeInfo)
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///If this info map is missing, or the triangle is not store in this map, nothing will be done
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void btAdjustInternalEdgeContacts(btManifoldPoint& cp, const btCollisionObjectWrapper* trimeshColObj0Wrap, const btCollisionObjectWrapper* otherColObj1Wrap, int partId0, int index0, int normalAdjustFlags = 0);
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///Enable the BT_INTERNAL_EDGE_DEBUG_DRAW define and call btSetDebugDrawer, to get visual info to see if the internal edge utility works properly.
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///If the utility doesn't work properly, you might have to adjust the threshold values in btTriangleInfoMap
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//#define BT_INTERNAL_EDGE_DEBUG_DRAW
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#ifdef BT_INTERNAL_EDGE_DEBUG_DRAW
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void btSetDebugDrawer(btIDebugDraw* debugDrawer);
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#endif //BT_INTERNAL_EDGE_DEBUG_DRAW
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#endif //BT_INTERNAL_EDGE_UTILITY_H
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