/*
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.kernel.algos;
import org.geogebra.common.euclidian.draw.DrawAngle;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.StringTemplate;
import org.geogebra.common.kernel.geos.GeoAngle;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.kernel.geos.GeoVector;
import org.geogebra.common.kernel.kernelND.GeoPointND;
public abstract class AlgoAngleVectorND extends AlgoAngle {
protected GeoElement vec; // input
protected GeoAngle angle; // output
public AlgoAngleVectorND(Construction cons, String label, GeoElement vec) {
super(cons);
this.vec = vec;
angle = newGeoAngle(cons);
setInputOutput(); // for AlgoElement
compute();
angle.setLabel(label);
}
// for AlgoElement
@Override
protected void setInputOutput() {
input = new GeoElement[1];
input[0] = vec;
setOutputLength(1);
setOutput(0, angle);
setDependencies(); // done by AlgoElement
}
public GeoAngle getAngle() {
return angle;
}
@Override
public final String toString(StringTemplate tpl) {
// Michael Borcherds 2008-03-30
// simplified to allow better Chinese translation
return getLoc().getPlain("AngleOfA", vec.getLabel(tpl));
}
@Override
public boolean updateDrawInfo(double[] m, double[] firstVec,
DrawAngle drawable) {
if (vec.isGeoVector()) {
GeoPointND vertex = ((GeoVector) vec).getStartPoint();
if (vertex != null) {
vertex.getInhomCoords(m);
}
return vertex != null && vertex.isDefined() && !vertex.isInfinite();
}
m[0] = 0;
m[1] = 0;
return vec.isDefined();
}
}