package org.geogebra.common.kernel.scripting;
import org.geogebra.common.euclidian.EuclidianViewInterfaceSlim;
import org.geogebra.common.kernel.Kernel;
import org.geogebra.common.kernel.arithmetic.Command;
import org.geogebra.common.kernel.commands.CmdScripting;
import org.geogebra.common.kernel.geos.GeoElement;
import org.geogebra.common.kernel.geos.GeoNumeric;
import org.geogebra.common.main.MyError;
/**
* ZoomOut
*/
public class CmdZoomOut extends CmdScripting {
/**
* Create new command processor
*
* @param kernel
* kernel
*/
public CmdZoomOut(Kernel kernel) {
super(kernel);
}
@Override
protected final GeoElement[] perform(Command c) throws MyError {
int n = c.getArgumentNumber();
switch (n) {
case 1:
GeoElement[] arg = resArgs(c);
if (arg[0].isGeoNumeric()) {
GeoNumeric numGeo = (GeoNumeric) arg[0];
EuclidianViewInterfaceSlim ev = app.getActiveEuclidianView();
double px = ev.getWidth() / 2.0; // mouseLoc.x;
double py = ev.getHeight() / 2.0; // mouseLoc.y;
double factor = numGeo.getDouble();
if (Kernel.isZero(factor)) {
throw argErr(app, c, arg[0]);
}
ev.zoom(px, py, 1 / factor, 4, true);
app.setUnsaved();
return arg;
}
throw argErr(app, c, arg[0]);
case 2:
arg = resArgs(c);
return CmdZoomIn.zoomIn2(arg, c,
1 / arg[0].evaluateDouble(), this);
default:
throw argNumErr(app, c, n);
}
}
}