package org.geogebra.common.kernel.commands;
import org.geogebra.common.kernel.Kernel;
import org.geogebra.common.kernel.algos.AlgoDependentNumber;
import org.geogebra.common.kernel.algos.AlgoRandom;
import org.geogebra.common.kernel.algos.AlgoRandomFixed;
import org.geogebra.common.kernel.arithmetic.BooleanValue;
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.GeoNumberValue;
import org.geogebra.common.kernel.geos.GeoNumeric;
import org.geogebra.common.main.MyError;
import org.geogebra.common.plugin.Operation;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
/**
* RandomBetween[a,b] RandomBetween[a,b,fixed]
*/
public class CmdRandom extends CommandProcessor {
/**
* Creates new command processor
*
* @param kernel
* kernel
*/
public CmdRandom(Kernel kernel) {
super(kernel);
}
@Override
@SuppressFBWarnings({ "SF_SWITCH_FALLTHROUGH",
"missing break is deliberate" })
public GeoElement[] process(Command c) throws MyError {
int n = c.getArgumentNumber();
GeoElement[] arg;
switch (n) {
case 0:
GeoNumeric num = new GeoNumeric(cons, 0);
cons.addRandomGeo(num);
num.setValue(app.getRandomNumber());
AlgoDependentNumber adn = new AlgoDependentNumber(cons,
new ExpressionNode(kernelA, num,
Operation.RANDOM, null),
false);
adn.getOutput(0).setLabel(c.getLabel());
return adn.getOutput();
case 3:
arg = resArgs(c);
if (arg[2] instanceof BooleanValue) {
if (((BooleanValue) arg[2]).getBoolean()) {
// don't pass (BooleanValue)arg[2] (dummy variable, always
// true)
AlgoRandomFixed algo = new AlgoRandomFixed(cons,
c.getLabel(), (GeoNumberValue) arg[0],
(GeoNumberValue) arg[1]);
GeoElement[] ret = { algo.getResult() };
return ret;
}
// else fall through to case 2:
} else {
throw argErr(app, c, arg[2]);
}
// fall through if arg[2] == false
case 2:
arg = resArgs(c);
if ((arg[0] instanceof GeoNumberValue)
&& (arg[1] instanceof GeoNumberValue)) {
AlgoRandom algo = new AlgoRandom(cons, c.getLabel(),
(GeoNumberValue) arg[0], (GeoNumberValue) arg[1]);
GeoElement[] ret = { algo.getResult() };
return ret;
}
throw argErr(app, c,
arg[0] instanceof GeoNumberValue ? arg[1] : arg[0]);
default:
throw argNumErr(app, c, n);
}
}
}