A single planar triangle that is one patch of a diggs:TriangulatedSurface. It is thetriangle-only counterpart of diggs:PlanarSurfacePatch: exactly one required exteriorboundary (no interior rings, since a triangle has no holes), whose ring shall be agml:LinearRing with exactly four positions (three distinct corners, the first andlast coincident), the convention gml:Triangle uses. This is not machine-enforced bythe content model.
<element name="TrianglePatch" substitutionGroup="gml:AbstractSurfacePatch" type="diggs:TriangulatedSurfacePatchType"><annotation><documentation>A single planar triangle that is one patch of a diggs:TriangulatedSurface. It is the triangle-only counterpart of diggs:PlanarSurfacePatch: exactly one required exterior boundary (no interior rings, since a triangle has no holes), whose ring shall be a gml:LinearRing with exactly four positions (three distinct corners, the first and last coincident), the convention gml:Triangle uses. This is not machine-enforced by the content model.</documentation></annotation></element>