Java Utililty Methods Rectangle Rotate

List of utility methods to do Rectangle Rotate

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Description

The list of methods to do Rectangle Rotate are organized into topic(s).

Method

Rectangle2DrotateRectangleOnEllipse(Rectangle2D rect, Point2D center, double angle, double a, double b)
rotate Rectangle On Ellipse 
double ellipseScale = b > 0 ? a / b : 0;
AffineTransform trans = AffineTransform.getRotateInstance(-angle, rect.getX() + center.getX(),
        (rect.getY() + center.getY()) * ellipseScale);
trans.scale(1.0, ellipseScale > 0 ? 1.0 / ellipseScale : 0);
Point2D upperLeft = trans.transform(new Point2D.Double(rect.getMinX(), rect.getMinY() * ellipseScale),
        null);
Point2D upperRight = trans.transform(new Point2D.Double(rect.getMaxX(), rect.getMinY() * ellipseScale),
        null);
...
Rectangle2DrotateRoundMiddlePoint(Rectangle2D rectangle)
rotate Round Middle Point 
Rectangle2D rec = new Rectangle2D.Double();
rec.setRect(rectangle); 
double x = (rec.getWidth() / 2);
double y = (rec.getHeight() / 2);
rec = grow(rec, new Point2D.Double(-x, -y));
rec = grow(rec, new Point2D.Double(y, x));
return rec;