/**
* Create a polygon from a RCvalue(matrix) NOTE: the connection from matlab to java TODO: what if
* there are less than 3 points
*/
protected PolygonValue(RCvalue u) throws EvalException { // NOTE: matlab to java
Point[] points;
if (u.isRow()) {
// each column should have two double values
points = new Point[u.size()];
for (int i = 0; i < u.size(); i++) {
Value v = u.value(i);
if (!(v instanceof RCvalue)) rc_bad();
RCvalue c = (RCvalue) v;
if (c.size() != 2) rc_bad();
Value x = c.value(0), y = c.value(1);
if (!(x instanceof DoubleValue) || !(y instanceof DoubleValue)) rc_bad();
points[i] = Point.create(((DoubleValue) x).value(), ((DoubleValue) y).value());
}
} else {
if (!(u.value(0) instanceof RCvalue) || !(u.value(1) instanceof RCvalue)) rc_bad();
RCvalue xMatrix = (RCvalue) (u.value(0)), yMatrix = (RCvalue) u.value(1);
if (xMatrix.size() != yMatrix.size()) rc_bad();
points = new Point[xMatrix.size()];
for (int i = 0; i < xMatrix.size(); i++) {
Value x = xMatrix.value(i), y = yMatrix.value(i);
if (!(x instanceof DoubleValue) || !(y instanceof DoubleValue)) rc_bad();
points[i] = Point.create(((DoubleValue) x).value(), ((DoubleValue) y).value());
}
}
poly = new SimplePolygon(points);
if (ConvexPolygon.isConvex(
(SimplePolygon) poly)) // create convexPolygon if it is, simplify the computation later
// BUGS, SimplePolygon removes duplicated points. Therefore, it is incorrect to construct a
// convex polygon
// using points and do not check. We should use the points from poly.
// poly = new ConvexPolygon(points,false);
poly = new ConvexPolygon(poly.points(), false);
if (poly.degree() == u.size()) // SimplePolygon may remove redundant points
rc = u;
else rc = null;
}
