/*FreeMind - A Program for creating and viewing Mindmaps
*Copyright (C) 2000-2001 Joerg Mueller <joergmueller@bigfoot.com>
*See COPYING for Details
*
*This program is free software; you can redistribute it and/or
*modify it under the terms of the GNU General Public License
*as published by the Free Software Foundation; either version 2
*of the License, or (at your option) any later version.
*
*This program 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 General Public License for more details.
*
*You should have received a copy of the GNU General Public License
*along with this program; if not, write to the Free Software
*Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*$Id: SharpBezierEdgeView.java,v 1.5.34.6 2007/10/25 15:32:59 dpolivaev Exp $*/
package freemind.view.mindmapview;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.geom.CubicCurve2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import freemind.main.Tools;
/**
* This class represents a sharp Edge of a MindMap.
*/
public class SharpBezierEdgeView extends EdgeView {
CubicCurve2D.Float line1 = new CubicCurve2D.Float();
CubicCurve2D.Float line2 = new CubicCurve2D.Float();
GeneralPath graph = new GeneralPath();
Point2D.Float one, two;
private int deltaX;
private int deltaY;
private static final float XCTRL = 12;// the distance between endpoint and
// controlpoint
public SharpBezierEdgeView() {
super();
}
private void update() {
float zoom = getMap().getZoom();
float xctrlRelative = XCTRL * zoom;
// YCTRL could be implemented but then we had to check whether target is
// above or below source.
if (getTarget().isLeft()) {
one = new Point2D.Float(start.x - xctrlRelative, start.y);
two = new Point2D.Float(end.x + xctrlRelative, end.y);
} else {
one = new Point2D.Float(start.x + xctrlRelative, start.y);
two = new Point2D.Float(end.x - xctrlRelative, end.y);
}
float w = (getWidth() / 2f + 1) * zoom;
float w2 = w / 2;
line1.setCurve(start.x - deltaX, start.y - deltaY, one.x - deltaX,
one.y - deltaY, two.x, two.y - w2, end.x, end.y);
line2.setCurve(end.x, end.y, two.x, two.y + w2, one.x + deltaX, one.y
+ deltaY, start.x + deltaX, start.y + deltaY);
graph.reset();
graph.append(line1, true);
graph.append(line2, true);
graph.closePath();
}
protected void paint(Graphics2D g) {
update();
g.setColor(getColor());
g.setPaint(getColor());
g.setStroke(DEF_STROKE);
g.fill(graph);
g.draw(graph);
}
public Color getColor() {
return getModel().getColor();
}
protected void createStart() {
if (source.isRoot()) {
start = source.getMainViewOutPoint(getTarget(), end);
final MainView mainView = source.getMainView();
final double w = mainView.getWidth() / 2;
final double x0 = start.x - w;
final double w2 = w * w;
final double x02 = x0 * x0;
if (w2 == x02) {
final int delta = getMap().getZoomed(getWidth() / 2 + 1);
deltaX = 0;
deltaY = delta;
} else {
final double delta = getMap().getZoom() * (getWidth() / 2 + 1);
final int h = mainView.getHeight() / 2;
final int y0 = start.y - h;
final double k = h / w * x0 / Math.sqrt(w2 - x02);
final double dx = delta / Math.sqrt(1 + k * k);
deltaX = (int) dx;
deltaY = (int) (k * dx);
if (y0 > 0) {
deltaY = -deltaY;
}
}
Tools.convertPointToAncestor(mainView, start, source);
} else {
final int delta = getMap().getZoomed(getWidth() / 2 + 1);
super.createStart();
deltaX = 0;
deltaY = delta;
}
}
}