Committing height field terrain work from tomva1@yahoo.com

src/BulletCollision/CollisionShapes/btConcaveShape.h

@@ -20,6 +20,16 @@ subject to the following restrictions:
 #include "BulletCollision/BroadphaseCollision/btBroadphaseProxy.h" // for the types
 #include "btTriangleCallback.h"
 
+/// PHY_ScalarType enumerates possible scalar types.
+/// See the btStridingMeshInterface or btHeightfieldTerrainShape for its use
+typedef enum PHY_ScalarType {
+	PHY_FLOAT,
+	PHY_DOUBLE,
+	PHY_INTEGER,
+	PHY_SHORT,
+	PHY_FIXEDPOINT88,
+	PHY_UCHAR
+} PHY_ScalarType;
 
 ///The btConcaveShape class provides an interface for non-moving (static) concave shapes.
 ///It has been implemented by the btStaticPlaneShape, btBvhTriangleMeshShape and btHeightfieldTerrainShape.