/*******************************************************************************
* Copyright (c) 2006-2012
* Software Technology Group, Dresden University of Technology
* DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Software Technology Group - TU Dresden, Germany;
* DevBoost GmbH - Berlin, Germany
* - initial API and implementation
******************************************************************************/
/*
* @(#)ChopEllipseConnector.java 2.1 2006-05-18
*
* Copyright (c) 1996-2006 by the original authors of JHotDraw
* and all its contributors.
* All rights reserved.
*
* The copyright of this software is owned by the authors and
* contributors of the JHotDraw project ("the copyright holders").
* You may not use, copy or modify this software, except in
* accordance with the license agreement you entered into with
* the copyright holders. For details see accompanying license terms.
*/
package org.jhotdraw.draw;
import org.jhotdraw.util.*;
import java.awt.*;
import java.awt.geom.*;
import static org.jhotdraw.draw.AttributeKeys.*;
import org.jhotdraw.geom.*;
/**
* A ChopEllipseConnector locates a connection Point2D.Double by
* chopping the connection at the ellipse defined by the
* figure's display box.
*
* @author Werner Randelshofer
* @version 2.1 2006-05-18 Reworked.
* <br>2.0 2006-01-14 Changed to support double precison coordinates.
* <br>1.0 2003-12-01 Derived from JHotDraw 5.4b1.
*/
public class ChopEllipseConnector extends ChopRectangleConnector {
/**
* Only used for DOMStorable input.
*/
public ChopEllipseConnector() {
}
public ChopEllipseConnector(Figure owner) {
super(owner);
}
private Color getStrokeColor(Figure f) {
return STROKE_COLOR.get(f);
}
private float getStrokeWidth(Figure f) {
Double w = STROKE_WIDTH.get(f);
return (w == null) ? 1f : w.floatValue();
}
protected Point2D.Double chop(Figure target, Point2D.Double from) {
target = getConnectorTarget(target);
Rectangle2D.Double r = target.getBounds();
if (getStrokeColor(target) != null) {
double grow;
switch (STROKE_PLACEMENT.get(target)) {
case CENTER:
default :
grow = getStrokeTotalWidth(target) / 2d;
break;
case OUTSIDE :
grow = getStrokeTotalWidth(target);
break;
case INSIDE :
grow = 0f;
break;
}
Geom.grow(r, grow, grow);
}
double angle = Geom.pointToAngle(r, from);
return Geom.ovalAngleToPoint(r, angle);
}
}