public boolean isRectangular(double tolerance) {
EdgeRing edges = getEdges();
for (Segment2D edge : edges) {
double angle =
AngleUtil.getSmallestDifference(edge.getAngle(), edges.getPrevious(edge).getAngle());
if (angle < AngleUtil.RIGHT - tolerance) return false;
if (angle > AngleUtil.RIGHT + tolerance && angle < AngleUtil.FLAT - tolerance) return false;
}
return true;
}
public EdgeRing getEdges() {
if (edges == null) {
edges = new EdgeRing();
for (int i = 0; i < points.size(); i++)
edges.add(new Segment2D(points.get(i), points.getNext(i)));
}
return edges;
}
public Polygon(EdgeRing col) {
points = new PointRing();
edges = new EdgeRing(col);
if (!edges.loop())
throw new RuntimeException(
"Can't construct " + this.getClass().getName() + " because edge list is not valid loop.");
for (Segment2D edge : edges) points.add(edge.getStart());
check();
}