CmdHull.java

package org.geogebra.common.kernel.discrete;

import org.geogebra.common.kernel.Kernel;
import org.geogebra.common.kernel.arithmetic.Command;
import org.geogebra.common.kernel.commands.CommandProcessor;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.kernel.geos.GeoList;
import org.geogebra.common.main.MyError;

/**
 * Hull
 */
public class CmdHull extends CommandProcessor {

	/**
	 * Create new command processor
	 * 
	 * @param kernel
	 *            kernel
	 */
	public CmdHull(Kernel kernel) {
		super(kernel);
	}

	@Override
	public GeoElement[] process(Command c) throws MyError {
		int n = c.getArgumentNumber();
		boolean[] ok = new boolean[2];
		GeoElement[] arg;
		arg = resArgs(c);

		switch (n) {
		case 2:

			if ((ok[0] = arg[0].isGeoList())
					&& (ok[1] = arg[1].isGeoNumeric())) {

				// command removed
				// AlgoHull algo = new AlgoHull(cons, c.getLabel(),
				// (GeoList) arg[0], (GeoNumeric) arg[1]);

				// fall-back to ConvxHull[]
				AlgoConvexHull algo = new AlgoConvexHull(cons, c.getLabel(),
						(GeoList) arg[0]);

				GeoElement[] ret = { algo.getResult() };
				return ret;
			}
			throw argErr(app, c, getBadArg(ok, arg));

		default:
			throw argNumErr(app, c, n);
		}
	}
}