geom.edge.start.poly

Syntax

p = geom.edge.start.poly(e)

Get the first polygon attached to an edge. This is used to iterate through all polygons attached to an edge with the geom.edge.start.index, geom.poly.next.poly and geom.poly.next.index functions.

Returns:	p - polygon pointer
Arguments:	e - edge pointer

Get the first polygon attached to edge e. This is used to iterate through all polygons attached to an edge using the geom.edge.start.index, geom.poly.next.poly and geom.poly.next.index functions.

Returns:	p - polygon pointer
Arguments:	e - edge pointer

Usage Example

The following example illustrates how geom.edge.start.poly can be used to iterate through all polygons connected to an edge.

    ; Test edge to poly loop
    global test25 = 0
    local edge_pnt = geom.edge.find(setpnt,1)
    local poly_pnt = geom.edge.start.poly(edge_pnt)
    local edge_ind = geom.edge.start.index(edge_pnt)
    loop while poly_pnt # null
        test25 = test25 + 1
        local next_pnt = geom.poly.next.poly(poly_pnt,edge_ind)
        edge_ind = geom.poly.next.index(poly_pnt,edge_ind)
        poly_pnt = next_pnt