This is useful when writing or modifying collision functions, when the actual direction of the x and y axes of a contact can be important. PiperOrigin-RevId: 437256700 Change-Id: I5eab737fc98018399e151552778c6109088bf614
PiperOrigin-RevId: 434731612 Change-Id: I0cfda3e7a3d1c72036764986efc252ffa1b8c6b0