internal edge about terrain shape

[rhyolite]

hi! In the function btAdjustInternalEdgeContacts, i found

Code: Select all

if (colObj0->getCollisionShape()->getShapeType() != TRIANGLE_SHAPE_PROXYTYPE)
		return;

does this mean the internal edge contact just for btBvhTriangleMeshShape, how about btHeightfieldTerrainShape? i can't slide smoothly cross internal edges in terrain shape. How can i fix this? Thanks very much!