MKI_PATCH_* (Patch Edge Flag)

Bit-wise OR combination of invisibility and inactivity flags for the edges of a patch. Possible values are:

MKI_PATCH_INVISIBLE1

The edge from Point[0] to Point[1] shall not be visible.

MKI_PATCH_INVISIBLE2

The edge from Point[1] to Point[2] shall not be visible.

MKI_PATCH_INVISIBLE3

The edge from Point[2] to Point[3] (or Point[0] in case of a triangle) shall not be visible.

MKI_PATCH_INVISIBLE4

The edge from Point[3] to Point[0] shall not be visible.

MKI_PATCH_INACTIVE1

The edge from Point[0] to Point[1] shall not be active, i.e. cannot be identified.

MKI_PATCH_INACTIVE2

The edge from Point[1] to Point[2] shall not be active, i.e. cannot be identified.

MKI_PATCH_INACTIVE3

The edge from Point[2] to Point[3] (or Point[0] in case of a triangle) shall not be active, i.e. cannot be identified.

MKI_PATCH_INACTIVE4

The edge from Point[3] to Point[0] shall not be active, i.e. cannot be identified.

Inactive edges should usually be invisible, too.