/*
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.geogebra3D.kernel3D.geos.GeoSpace;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.Kernel;
import org.geogebra.common.kernel.StringTemplate;
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;
import org.geogebra.common.kernel.kernelND.GeoPointND;
/**
* Compute a plane through a point and orthogonal to a line (or segment, ...)
*
* @author mathieu
*/
public class AlgoOrthoLinePointLine3D extends AlgoOrtho {
public AlgoOrthoLinePointLine3D(Construction cons, String label,
GeoPointND point, GeoLineND line) {
super(cons, label, point, (GeoElement) line);
}
@Override
protected void setSpecificInputOutput() {
setInputOutput(
new GeoElement[] { (GeoElement) point, inputOrtho,
(GeoSpace) cons.getSpace() },
new GeoElement[] { line });
}
@Override
public Commands getClassName() {
return Commands.OrthogonalLine;
}
private GeoLineND getInputLine() {
return (GeoLineND) getInputOrtho();
}
@Override
public final void compute() {
GeoLineND line1 = getInputLine();
Coords o = line1.getPointInD(3, 0).getInhomCoordsInSameDimension();
Coords v1 = line1.getPointInD(3, 1).getInhomCoordsInSameDimension()
.sub(o);
Coords o2 = getPoint().getInhomCoordsInD3();
Coords v2 = o2.sub(o);
Coords v3 = v1.crossProduct(v2);
Coords v = v3.crossProduct(v1);
if (v.equalsForKernel(0, Kernel.STANDARD_PRECISION)) {
getLine().setUndefined();
} else {
getLine().setCoord(getPoint().getInhomCoordsInD3(), v.normalize());
}
}
@Override
final public String toString(StringTemplate tpl) {
return getLoc().getPlain("LineThroughAPerpendicularToBinSpace",
point.getLabel(tpl), inputOrtho.getLabel(tpl));
}
}