package org.geogebra.common.kernel.commands;
import org.geogebra.common.kernel.Kernel;
import org.geogebra.common.kernel.algos.AlgoTurningPointPolynomial;
import org.geogebra.common.kernel.algos.AlgoTurningPointPolynomialInterval;
import org.geogebra.common.kernel.arithmetic.Command;
import org.geogebra.common.kernel.arithmetic.ExpressionNode;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.kernel.geos.GeoFunction;
import org.geogebra.common.kernel.geos.GeoFunctionable;
import org.geogebra.common.kernel.geos.GeoPoint;
import org.geogebra.common.main.MyError;
import org.geogebra.common.plugin.Operation;
/**
* TurningPoint[ <GeoFunction> ]
*/
public class CmdTurningPoint extends CommandProcessor {
/**
* Create new command processor
*
* @param kernel
* kernel
*/
public CmdTurningPoint(Kernel kernel) {
super(kernel);
}
@Override
final public GeoElement[] process(Command c) throws MyError {
int n = c.getArgumentNumber();
GeoElement[] arg;
switch (n) {
case 1:
arg = resArgs(c);
if (arg[0].isGeoFunctionable()) {
GeoFunction f = ((GeoFunctionable) arg[0]).getGeoFunction();
// special case for If
// non-polynomial -> undefined
ExpressionNode exp = f.getFunctionExpression();
if (exp.getOperation().equals(Operation.IF)) {
AlgoTurningPointPolynomialInterval algo = new AlgoTurningPointPolynomialInterval(
cons, c.getLabels(), f);
GeoPoint[] g = algo.getRootPoints();
return g;
}
AlgoTurningPointPolynomial algo = new AlgoTurningPointPolynomial(
cons, c.getLabels(), f);
return algo.getRootPoints();
}
throw argErr(app, c, arg[0]);
default:
throw argNumErr(app, c, n);
}
}
}