DiagramHelper.java

/*******************************************************************************
 * Signavio Core Components
 * Copyright (C) 2012  Signavio GmbH
 * 
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package de.hpi.bpmn2_0.util;

import java.util.ArrayList;
import java.util.List;

import org.oryxeditor.server.diagram.Bounds;
import org.oryxeditor.server.diagram.Point;
import org.oryxeditor.server.diagram.generic.GenericDiagram;
import org.oryxeditor.server.diagram.generic.GenericEdge;
import org.oryxeditor.server.diagram.generic.GenericShape;

/**
 * @author Sven Wagner-Boysen
 * 
 */
public class DiagramHelper {

	@Deprecated
	public static Bounds getAbsoluteBounds(GenericShape shape) {
		/* Handle invalid diagram and prevent from crashing the transformation */
		if (shape.getBounds() == null) {
			Bounds bounds = new Bounds(new Point(0.0, 0.0), new Point(0.0, 0.0));
			return bounds;
		}
		// clone bounds
		Bounds bounds = cloneBounds(shape.getBounds());

		GenericShape parent = shape.getParent();

		if (parent != null) {
			Bounds parentBounds = getAbsoluteBounds(parent);
			setBounds(bounds, parentBounds.getUpperLeft().getX().doubleValue(),
					parentBounds.getUpperLeft().getY().doubleValue());
		}

		return bounds;
	}

	
	public static List<GenericEdge> getOutgoingEdges(GenericShape<?,?> shape){
		List<GenericEdge> list = new ArrayList<GenericEdge>();
		for (GenericShape outgoing: shape.getOutgoingsReadOnly()){
			if (outgoing instanceof GenericEdge)
				list.add((GenericEdge)outgoing);
		}
		return list;
	}
	
	
	public static List<GenericEdge> getIncomingEdges(GenericShape<?,?> shape){
		List<GenericEdge> list = new ArrayList<GenericEdge>();
		for (GenericShape incoming: shape.getIncomingsReadOnly()){
			if (incoming instanceof GenericEdge)
				list.add((GenericEdge)incoming);
		}
		return list;
	}
	
	
	public static List<GenericEdge> getAllEdges(GenericDiagram<?,?> diagram){
		List<GenericEdge> list = new ArrayList<GenericEdge>();
		for (GenericShape shape: diagram.getAllShapesReadOnly()){
			if (shape instanceof GenericEdge)
				list.add((GenericEdge)shape);
		}
		return list;
	}
	
	
	public static double calculateCenterDistance(
			de.hpi.bpmn2_0.model.bpmndi.dc.Bounds b1,
			de.hpi.bpmn2_0.model.bpmndi.dc.Bounds b2) {

		de.hpi.bpmn2_0.model.bpmndi.dc.Point b1Center = new de.hpi.bpmn2_0.model.bpmndi.dc.Point();
		b1Center.setX(b1.getX() + b1.getWidth() / 2.0);
		b1Center.setY(b1.getY() + b1.getHeight() / 2.0);

		de.hpi.bpmn2_0.model.bpmndi.dc.Point b2Center = new de.hpi.bpmn2_0.model.bpmndi.dc.Point();
		b2Center.setX(b2.getX() + b2.getWidth() / 2.0);
		b2Center.setY(b2.getY() + b2.getHeight() / 2.0);

		return Math.sqrt(Math.pow(b1Center.getX() - b2Center.getX(), 2.0)
				+ Math.pow(b1Center.getY() - b2Center.getY(), 2.0));
	}

	@Deprecated
	private static Bounds cloneBounds(Bounds bounds) {
		double lrx = (bounds.getLowerRight().getX() != null ? bounds
				.getLowerRight().getX() : 0.0);
		double lry = (bounds.getLowerRight().getY() != null ? bounds
				.getLowerRight().getY() : 0.0);
		double ulx = (bounds.getUpperLeft().getX() != null ? bounds
				.getUpperLeft().getX() : 0.0);
		double uly = (bounds.getUpperLeft().getY() != null ? bounds
				.getUpperLeft().getY() : 0.0);

		return new Bounds(new Point(lrx, lry), new Point(ulx, uly));
	}

	@Deprecated
	private static void setBounds(Bounds bounds, double offsetX, double offsetY) {
		Point ul = bounds.getUpperLeft();
		ul.setX(ul.getX() + offsetX);
		ul.setY(ul.getY() + offsetY);
		Point lr = bounds.getLowerRight();
		lr.setX(lr.getX() + offsetX);
		lr.setY(lr.getY() + offsetY);
	}

}