/*******************************************************************************
 * Breakout Cave Survey Visualizer
 *
 * Copyright (C) 2014 James Edwards
 *
 * jedwards8 at fastmail dot fm
 *
 * 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., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *******************************************************************************/
package org.andork.math3d;

import java.util.Arrays;

import org.junit.Assert;
import org.junit.Test;

public class ColumnMajorVecmathTest {
	public double[] createTestMatrix() {
		double[] mat = RowMajorVecmath.newMat4d();

		double[] axis = { 1, 0.5, 0.25 };
		RowMajorVecmath.normalize3(axis);

		RowMajorVecmath.setRotation(mat, axis, 2.0);

		RowMajorVecmath.setColumn3(mat, 3, 2.0, 5.0, 16.0);

		return mat;
	}

	@Test
	public void testInvAffine() {
		double[] mat = createTestMatrix();

		double[] copy = Arrays.copyOf(mat, 16);
		RowMajorVecmath.transpose(copy, copy);

		RowMajorVecmath.invAffine(mat, mat);
		Vecmath.invAffine(copy, copy);
		RowMajorVecmath.transpose(copy, copy);

		Assert.assertArrayEquals(mat, copy, 0.0);
	}

	@Test
	public void testInvertGeneral() {
		double[] mat = createTestMatrix();

		double[] copy = Arrays.copyOf(mat, 16);
		RowMajorVecmath.transpose(copy, copy);

		RowMajorVecmath.invertGeneral(mat);
		Vecmath.invertGeneral(copy);
		RowMajorVecmath.transpose(copy, copy);

		Assert.assertArrayEquals(mat, copy, 0.0);
	}

	// test failed last time I ran it but the two methods are unused
	// @Test
	// public void testInvAffineToTranspose3x3( )
	// {
	// double[ ] mat = createTestMatrix( );
	//
	// double[ ] copy = Arrays.copyOf( mat , 16 );
	// RowMajorVecmath.transpose( copy , copy );
	//
	// RowMajorVecmath.invAffineToTranspose3x3( mat , mat );
	// Vecmath.invAffineToTranspose3x3( copy , copy );
	// RowMajorVecmath.transpose( copy , copy );
	//
	// Assert.assertArrayEquals( mat , copy , 0.0 );
	// }
}