AlgoOrthoLineLineLine.java example

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/* 
GeoGebra - Dynamic Mathematics for Everyone
http://www.geogebra.org

This file is part of GeoGebra.

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.

 */

package org.geogebra.common.geogebra3D.kernel3D.algos;

import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.StringTemplate;
import org.geogebra.common.kernel.Matrix.CoordMatrixUtil;
import org.geogebra.common.kernel.Matrix.Coords;
import org.geogebra.common.kernel.commands.Commands;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.kernel.kernelND.GeoLineND;

/**
 * Compute a line orthogonal to two lines
 *
 * @author matthieu
 */
public class AlgoOrthoLineLineLine extends AlgoOrthoLineLine {

	private GeoLineND line2; // input

	public AlgoOrthoLineLineLine(Construction cons, String label,
			GeoLineND line1, GeoLineND line2) {
		super(cons, line1);
		this.line2 = line2;

		setInputOutput(
				new GeoElement[] { (GeoElement) line1, (GeoElement) line2 },
				new GeoElement[] { getLine() });

		// compute line
		compute();
		getLine().setLabel(label);
	}

	@Override
	public Commands getClassName() {
		return Commands.OrthogonalLine;
	}

	@Override
	protected void setOriginAndDirection2() {
		Coords o2 = line2.getPointInD(3, 0).getInhomCoordsInSameDimension();
		direction2 = line2.getPointInD(3, 1).getInhomCoordsInSameDimension()
				.sub(o2);
		Coords[] points = CoordMatrixUtil.nearestPointsFromTwoLines(origin1,
				direction1, o2, direction2);
		origin = points[0];

	}

	@Override
	public String toString(StringTemplate tpl) {
		return getLoc().getPlain("LinePerpendicularToAandB",
				line1.getLabel(tpl), line2.getLabel(tpl));

	}

}