/*
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.EuclidianConstants;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.Region;
import org.geogebra.common.kernel.StringTemplate;
import org.geogebra.common.kernel.commands.Commands;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.kernel.geos.GeoPoint;
/**
* Point in region algorithm
*
* @author mathieu
*
*/
public class AlgoPointInRegion extends AlgoElement {
protected Region region; // input
protected GeoPoint P; // output
public AlgoPointInRegion(Construction cons, Region region) {
super(cons);
this.region = region;
}
public AlgoPointInRegion(Construction cons, String label, Region region,
double x, double y) {
this(cons, region);
P = new GeoPoint(cons, region);
P.setCoords(x, y, 1.0);
setInputOutput(); // for AlgoElement
compute();
P.setLabel(label);
}
@Override
public Commands getClassName() {
return Commands.PointIn;
}
@Override
public int getRelatedModeID() {
return EuclidianConstants.MODE_POINT_ON_OBJECT;
}
// for AlgoElement
@Override
protected void setInputOutput() {
input = new GeoElement[1];
input[0] = region.toGeoElement();
setOutputLength(1);
setOutput(0, P);
setDependencies(); // done by AlgoElement
}
/**
* returns the point
*
* @return resulting point
*/
public GeoPoint getP() {
return P;
}
/**
* Returns the region
*
* @return region
*/
Region getRegion() {
return region;
}
@Override
public void compute() {
if (region.isDefined()) {
region.regionChanged(P);
P.updateCoords();
} else {
P.setUndefined();
}
}
@Override
final public String toString(StringTemplate tpl) {
// Michael Borcherds 2008-03-30
// simplified to allow better Chinese translation
return getLoc().getPlain("PointInA", input[0].getLabel(tpl));
}
}