CmdPathParameter.java

package org.geogebra.common.kernel.advanced;

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.kernelND.GeoPointND;
import org.geogebra.common.main.MyError;

/**
 * PathParameter[Point on path]
 * 
 */
public class CmdPathParameter extends CommandProcessor {

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

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

		switch (n) {
		case 1:
			arg = resArgs(c);
			if ((arg[0].isGeoPoint())) {

				AlgoPathParameter algo = new AlgoPathParameter(cons,
						c.getLabel(), (GeoPointND) arg[0]);

				GeoElement[] ret = { algo.getResult() };
				return ret;

			}
			throw argErr(app, c, arg[0]);

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

}