/**
* Closes the current subpath.
*/
public virtual void CloseSubpath()
{
Subpath lastSubpath = this.LastSubpath;
lastSubpath.Closed = true;
Point2D startPoint = lastSubpath.GetStartPoint();
MoveTo((float)startPoint.GetX(), (float)startPoint.GetY());
}
/**
* Begins a new subpath by moving the current point to coordinates <CODE>(x, y)</CODE>.
*/
public virtual void MoveTo(float x, float y)
{
currentPoint = new Point2D.Float(x, y);
Subpath lastSubpath = this.LastSubpath;
if (lastSubpath != null && lastSubpath.IsSinglePointOpen())
{
lastSubpath.SetStartPoint(currentPoint);
}
else
{
subpaths.Add(new Subpath(currentPoint));
}
}
/**
* Copy constuctor.
* @param subpath
*/
public Subpath(Subpath subpath)
{
this.startPoint = subpath.startPoint;
Util.AddAll(this.segments, subpath.GetSegments());
this.closed = subpath.closed;
}
/**
* Adds the subpath to this path.
*
* @param subpath The subpath to be added to this path.
*/
public void AddSubpath(Subpath subpath)
{
subpaths.Add(subpath);
currentPoint = subpath.GetLastPoint();
}
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;
}
/**
* Adds the subpath to this path.
*
* @param subpath The subpath to be added to this path.
*/
public void AddSubpath(Subpath subpath) {
subpaths.Add(subpath);
currentPoint = subpath.GetLastPoint();
}
/**
* Copy constuctor.
* @param subpath
*/
public Subpath(Subpath subpath) {
this.startPoint = subpath.startPoint;
Util.AddAll(this.segments, subpath.GetSegments());
this.closed = subpath.closed;
}
