import java.awt.Polygon;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.Ellipse2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
/*
* $Id: ShapeUtils.java,v 1.4 2008/10/14 22:31:46 rah003 Exp $
*
* Copyright 2006 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
public class Utils {
public static Shape generatePolygon(int sides, int outsideRadius, boolean normalize) {
return generatePolygon(sides, outsideRadius, 0, normalize);
}
public static Shape generatePolygon(int sides, int outsideRadius, int insideRadius,
boolean normalize) {
Shape shape = generatePolygon(sides, outsideRadius, insideRadius);
if (normalize) {
Rectangle2D bounds = shape.getBounds2D();
GeneralPath path = new GeneralPath(shape);
shape = path.createTransformedShape(AffineTransform.getTranslateInstance(-bounds.getX(),
-bounds.getY()));
}
return shape;
}
public static Shape generatePolygon(int sides, int outsideRadius, int insideRadius) {
if (sides < 3) {
return new Ellipse2D.Float(0, 0, 10, 10);
}
AffineTransform trans = new AffineTransform();
Polygon poly = new Polygon();
for (int i = 0; i < sides; i++) {
trans.rotate(Math.PI * 2 / (float) sides / 2);
Point2D out = trans.transform(new Point2D.Float(0, outsideRadius), null);
poly.addPoint((int) out.getX(), (int) out.getY());
trans.rotate(Math.PI * 2 / (float) sides / 2);
if (insideRadius > 0) {
Point2D in = trans.transform(new Point2D.Float(0, insideRadius), null);
poly.addPoint((int) in.getX(), (int) in.getY());
}
}
return poly;
}
}
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