A point where a curve meets a face: its parameter on the curve as a fraction, the index of the
edge it lies on as shapes.edge.getEdgesAlongWire numbers them, its u and v on the face as
fractions of the face's UV bounds, as shapes.face.pointOnUV takes them, and whether it is an end
of a stretch of the curve lying on the face.
A point where a curve meets a face: its parameter on the curve as a fraction, the index of the edge it lies on as
shapes.edge.getEdgesAlongWirenumbers them, itsuandvon the face as fractions of the face's UV bounds, asshapes.face.pointOnUVtakes them, and whether it is an end of a stretch of the curve lying on the face.