private static Subpath ConstructSquare(Point2D squareCenter, double widthHalf, double rotationAngle) {
// Orthogonal square is the square with sides parallel to one of the axes.
Point2D[] ortogonalSquareVertices = {
new Point2D.Double(-widthHalf, -widthHalf),
new Point2D.Double(-widthHalf, widthHalf),
new Point2D.Double(widthHalf, widthHalf),
new Point2D.Double(widthHalf, -widthHalf)
};
Point2D[] rotatedSquareVertices = GetRotatedSquareVertices(ortogonalSquareVertices, rotationAngle, squareCenter);
Subpath square = new Subpath();
square.AddSegment(new Line(rotatedSquareVertices[0], rotatedSquareVertices[1]));
square.AddSegment(new Line(rotatedSquareVertices[1], rotatedSquareVertices[2]));
square.AddSegment(new Line(rotatedSquareVertices[2], rotatedSquareVertices[3]));
square.AddSegment(new Line(rotatedSquareVertices[3], rotatedSquareVertices[0]));
return square;
}
/**
* Converts specified degenerate subpaths to circles.
* Note: actually the resultant subpaths are not real circles but approximated.
*
* @param radius Radius of each constructed circle.
* @return {@link java.util.List} consisting of circles constructed on given degenerated subpaths.
*/
private static IList<Subpath> ConvertToCircles(IList<Subpath> degenerateSubpaths, double radius) {
IList<Subpath> circles = new List<Subpath>(degenerateSubpaths.Count);
foreach (Subpath subpath in degenerateSubpaths) {
BezierCurve[] circleSectors = ApproximateCircle(subpath.GetStartPoint(), radius);
Subpath circle = new Subpath();
circle.AddSegment(circleSectors[0]);
circle.AddSegment(circleSectors[1]);
circle.AddSegment(circleSectors[2]);
circle.AddSegment(circleSectors[3]);
circles.Add(circle);
}
return circles;
}
