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Add backface culling and option to keep unflipped hit normal in case a ray hits a back-facing triangle.

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Usage: set RayResultCallback.m_flags to kF_FilterBackfaces, optionally combined with kF_KeepUnflippedNormal.
Thanks Andy O'Neil for the patch!

Remove the force_inline for some internal constraint solver methods, it makes re-use easier.
Workaround/avoid MSVC 2005 compiler error in LibXML/trionan.c
This commit is contained in:
erwin.coumans
2009-02-28 01:25:23 +00:00
parent a216ce4bf6
commit 210fe36106
6 changed files with 48 additions and 14 deletions
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6
src/BulletCollision/CollisionDispatch/btCollisionWorld.cpp
View File

@@ -298,7 +298,8 @@ void btCollisionWorld::rayTestSingle(const btTransform& rayFromTrans,const btTra
BridgeTriangleRaycastCallback( const btVector3& from,const btVector3& to,
btCollisionWorld::RayResultCallback* resultCallback, btCollisionObject* collisionObject,btTriangleMeshShape* triangleMesh):
btTriangleRaycastCallback(from,to),
//@BP Mod
btTriangleRaycastCallback(from,to, resultCallback->m_flags),
m_resultCallback(resultCallback),
m_collisionObject(collisionObject),
m_triangleMesh(triangleMesh)
@@ -347,7 +348,8 @@ void btCollisionWorld::rayTestSingle(const btTransform& rayFromTrans,const btTra
BridgeTriangleRaycastCallback( const btVector3& from,const btVector3& to,
btCollisionWorld::RayResultCallback* resultCallback, btCollisionObject* collisionObject,btConcaveShape* triangleMesh):
btTriangleRaycastCallback(from,to),
//@BP Mod
btTriangleRaycastCallback(from,to, resultCallback->m_flags),
m_resultCallback(resultCallback),
m_collisionObject(collisionObject),
m_triangleMesh(triangleMesh)

6
src/BulletCollision/CollisionDispatch/btCollisionWorld.h
View File

@@ -186,6 +186,8 @@ public:
btCollisionObject* m_collisionObject;
short int m_collisionFilterGroup;
short int m_collisionFilterMask;
//@BP Mod - Custom flags, currently used to enable backface culling on tri-meshes, see btRaycastCallback
unsigned int m_flags;
virtual ~RayResultCallback()
{
@@ -199,7 +201,9 @@ public:
:m_closestHitFraction(btScalar(1.)),
m_collisionObject(0),
m_collisionFilterGroup(btBroadphaseProxy::DefaultFilter),
m_collisionFilterMask(btBroadphaseProxy::AllFilter)
m_collisionFilterMask(btBroadphaseProxy::AllFilter),
//@BP Mod
m_flags(0)
{
}