.TH BoolLoopsFromInterList 3 "IRIT Version 6.0" 
.SH NAME
BoolLoopsFromInterList()
.SH SYNOPSIS
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bool_lib/bool1low.c:979

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void BoolLoopsFromInterList(IPPolygonStruct *Pl,
                            InterSegListStruct **PClosed,
                            InterSegListStruct **POpen)
.SH DESCRIPTION
Given a polygon with the intersection list, creates the polylines
loop(s) out of it, which can be one of the two:
 1. Closed loop - all the intersections create a loop in one polygon.
 2. Open polyline - if the intersections cross the polygon boundary. In
this case the two end point of the polyline, must lay on polygon
boundary.

In both cases, the polyline will be as follows:
First point at first list element at PtSeg[0] (see InterSegmentStruct).
Second point at first list element at PtSeg[1] (see InterSegmentStruct).
Point i at list element (i-1) at PtSeg[0] (PtSeg[1] is not used!).
In the closed loop case the last point is equal to first.
Both cases returns NULL terminated list.
.SH PARAMETERS:

Pl: Polygon with intersection information in its PAux slot.

PClosed: To be updated with the closed loops found in Pl.

POpen: To be updated with the open loops found in Pl.
.SH FUNCTION RETURN VALUE
void
.LP
.SH ORIGIN
(C) Copyright 1989/90-95 Gershon Elber, Technion, IIT