/*
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.
*/
/*
* AlgoMidpointConic.java
*
* Created on 11. November 2001, 21:37
*/
package org.geogebra.common.kernel.algos;
import org.geogebra.common.kernel.Construction;
import org.geogebra.common.kernel.geos.GeoPoint;
import org.geogebra.common.kernel.geos.GeoVec2D;
import org.geogebra.common.kernel.kernelND.GeoConicND;
import org.geogebra.common.kernel.kernelND.GeoConicNDConstants;
import org.geogebra.common.kernel.kernelND.GeoPointND;
/**
* Center of a conic section.
*/
public class AlgoCenterConic extends AlgoCenterQuadricND {
/**
* Constructor
*
* @param cons
* @param label
* @param c
*/
public AlgoCenterConic(Construction cons, String label, GeoConicND c) {
super(cons, label, c);
}
@Override
public GeoPointND newGeoPoint(Construction cons1) {
return new GeoPoint(cons1);
}
@Override
public GeoPointND getPoint() {
return midpoint;
}
@Override
public void setCoords() {
switch (c.type) {
case GeoConicNDConstants.CONIC_CIRCLE:
case GeoConicNDConstants.CONIC_ELLIPSE:
case GeoConicNDConstants.CONIC_HYPERBOLA:
case GeoConicNDConstants.CONIC_SINGLE_POINT:
case GeoConicNDConstants.CONIC_INTERSECTING_LINES:
GeoVec2D b = ((GeoConicND) c).b;
setCoords(b.getX(), b.getY());
break;
default:
// midpoint undefined
midpoint.setUndefined();
}
}
/**
* set the coords of the midpoint
*
* @param x
* @param y
*/
protected void setCoords(double x, double y) {
midpoint.setCoords(x, y, 1.0d);
}
}