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/* AbstractGraphGeneratorInstance.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* 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.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.generators.graphs;
import org.grinvin.graphs.Embedding;
import org.grinvin.graphs.Graph;
import org.grinvin.graphs.GraphBundle;
/**
* Abstract super class of all graph generator instances.
*/
public abstract class AbstractGraphGeneratorInstance implements GraphGeneratorInstance {
//
private final String name;
public String getName() {
return name;
}
//
private final String id;
public String getId() {
return this.id;
}
//
private final String description;
public String getDescription() {
return description;
}
//
public AbstractGraphGeneratorInstance (AbstractGraphGenerator agg) {
this.id = agg.getInstanceId();
this.name = agg.getInstanceName();
this.description = agg.getInstanceDescription();
}
/**
* Auxiliary method that creates a cyclic embedding for the given bundle.
*/
protected static void createCyclicEmbedding (GraphBundle bundle) {
// TODO: should go into a different class?
Graph graph = bundle.getGraph();
int order = graph.getNumberOfVertices();
Embedding embedding = bundle.createEmbedding();
if (embedding != null) {
embedding.setDimension(2);
for(int i = 0; i < order; i++) {
double angle = 2 * i * Math.PI / order;
double[] coords = new double[2];
coords[0] = Math.cos(angle);
coords[1] = Math.sin(angle);
embedding.setCoordinates(graph.getVertex(i), coords);
}
}
}
}
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