`geom.edge.start.poly`

Syntax

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

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.

    global test20 = geom.edge.id(geom.poly.edge(pnt,1))
    global test21 = geom.node.id(geom.poly.node(pnt,2))
    global test22 = geom.poly.normal(pnt)
    global test23 = geom.poly.pos(pnt)
    global test24 = geom.poly.area(pnt)
    
    ; Test edge to polygon loop
    global test25 = 0
    local edge_pnt = geom.edge.find(setpnt,1)
    local poly_pnt = geom.edge.start.poly(edge_pnt)