/*
* Copyright (C) 2010 Brockmann Consult GmbH (info@brockmann-consult.de)
*
* 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 com.bc.ceres.glevel.support;
import junit.framework.TestCase;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
public class DefaultMultiLevelModelTest extends TestCase {
final double TX0 = -50;
final double TY0 = 150;
final double S0 = 10;
final int W = 800;
final int H = 600;
final double[] ES = {1, 2, 4, 8};
public void testAllProperties() {
AffineTransform i2m0 = new AffineTransform();
i2m0.translate(TX0, TY0);
i2m0.scale(S0, S0);
DefaultMultiLevelModel model = new DefaultMultiLevelModel(4, i2m0, W, H);
assertEquals(4, model.getLevelCount());
assertEquals(new Rectangle2D.Double(TX0, TY0, S0 * W, S0 * H), model.getModelBounds());
assertEquals(i2m0, model.getImageToModelTransform(0));
testLevel(model, 0);
testLevel(model, 1);
testLevel(model, 2);
testLevel(model, 3);
}
private void testLevel(DefaultMultiLevelModel model, int level) {
AffineTransform i2m = model.getImageToModelTransform(level);
double scale = model.getScale(level);
String msg = "at level " + level + ", ";
assertEquals(msg, ES[level], scale, 1e-10);
assertEquals(msg, level, model.getLevel(scale));
assertEquals(msg, new Point2D.Double(TX0, TY0),
i2m.transform(new Point2D.Double(0, 0), null));
assertEquals(msg, new Point2D.Double(S0 * scale + TX0, S0 * scale + TY0),
i2m.transform(new Point2D.Double(1, 1), null));
}
}