Add pairwise collision test:

void	btCollisionWorld::contactPairTest(btCollisionObject* colObjA, btCollisionObject* colObjB, ContactResultCallback& resultCallback)

cmake: improve feedback for Maya Plugin handling if the Maya base path is not detected

src/BulletCollision/CollisionDispatch/btCollisionWorld.cpp

@@ -1017,6 +1017,25 @@ void	btCollisionWorld::contactTest( btCollisionObject* colObj, ContactResultCall
 }
 
 
+///contactTest performs a discrete collision test between two collision objects and calls the resultCallback if overlap if detected.
+///it reports one or more contact points (including the one with deepest penetration)
+void	btCollisionWorld::contactPairTest(btCollisionObject* colObjA, btCollisionObject* colObjB, ContactResultCallback& resultCallback)
+{
+	btCollisionAlgorithm* algorithm = getDispatcher()->findAlgorithm(colObjA,colObjB);
+	if (algorithm)
+	{
+		btBridgedManifoldResult contactPointResult(colObjA,colObjB, resultCallback);
+		//discrete collision detection query
+		algorithm->processCollision(colObjA,colObjB, getDispatchInfo(),&contactPointResult);
+
+		algorithm->~btCollisionAlgorithm();
+		getDispatcher()->freeCollisionAlgorithm(algorithm);
+	}
+
+}
+
+
+
 
 class DebugDrawcallback : public btTriangleCallback, public btInternalTriangleIndexCallback
 {

src/BulletCollision/CollisionDispatch/btCollisionWorld.h

@@ -403,6 +403,11 @@ public:
 	///it reports one or more contact points for every overlapping object (including the one with deepest penetration)
 	void	contactTest(btCollisionObject* colObj, ContactResultCallback& resultCallback);
 
+	///contactTest performs a discrete collision test between two collision objects and calls the resultCallback if overlap if detected.
+	///it reports one or more contact points (including the one with deepest penetration)
+	void	contactPairTest(btCollisionObject* colObjA, btCollisionObject* colObjB, ContactResultCallback& resultCallback);
+
+
 	/// rayTestSingle performs a raycast call and calls the resultCallback. It is used internally by rayTest.
 	/// In a future implementation, we consider moving the ray test as a virtual method in btCollisionShape.
 	/// This allows more customization.