/* Copyright (C) 2009 Stefan Kuhn <shk3@users.sf.net>
*
* Contact: cdk-devel@list.sourceforge.net
*
* This program 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 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.openscience.jchempaint.renderer.generators;
import java.awt.geom.Rectangle2D;
import org.openscience.cdk.interfaces.IReaction;
import org.openscience.jchempaint.renderer.JChemPaintRendererModel;
import org.openscience.jchempaint.renderer.Renderer;
import org.openscience.cdk.renderer.elements.ArrowElement;
import org.openscience.cdk.renderer.elements.IRenderingElement;
/**
* Generate the arrow for a reaction.
*
* @author maclean
* @cdk.module renderextra
*
*/
public class ReactionArrowGenerator implements IReactionGenerator {
public IRenderingElement generate(IReaction reaction, JChemPaintRendererModel model) {
Rectangle2D totalBoundsReactants =
Renderer.calculateBounds(reaction.getReactants());
Rectangle2D totalBoundsProducts =
Renderer.calculateBounds(reaction.getProducts());
if (totalBoundsReactants == null || totalBoundsProducts == null)
return null;
double d = model.getBondLength() / model.getScale();
return new ArrowElement(totalBoundsReactants.getMaxX() + d,
totalBoundsReactants.getCenterY(),
totalBoundsProducts.getMinX() - d,
totalBoundsProducts.getCenterY(),
1 / model.getScale(),true,model.getForeColor());
}
}