public final void perform(Command c) throws MyError {
int n = c.getArgumentNumber();
GeoElement[] arg;
switch (n) {
case 1:
arg = resArgs(c);
if (arg[0].isNumberValue()) {
GeoNumeric layerGeo = (GeoNumeric) arg[0];
int layer = (int) layerGeo.getDouble();
Iterator<GeoElement> it = kernelA.getConstruction().getGeoSetLabelOrder().iterator();
while (it.hasNext()) {
GeoElement geo = it.next();
if (geo.getLayer() == layer) {
geo.setEuclidianVisible(true);
geo.updateRepaint();
}
}
return;
} else throw argErr(app, c.getName(), null);
default:
throw argNumErr(app, c.getName(), n);
}
}
/*
* Michael Borcherds 2008-03-03 return -1 if nothing selected return -2 if
* objects from more than one layer selected return layer number if objects
* from exactly one layer are selected
*/
private int getSelectedLayer() {
Object[] geos = app.getSelectedGeos().toArray();
if (geos.length == 0) return -1; // return -1 if nothing selected
int layer = ((GeoElement) geos[0]).getLayer();
for (int i = 1; i < geos.length; i++) {
GeoElement geo = (GeoElement) geos[i];
if (geo.getLayer() != layer) return -2; // return -2 if more than one layer selected
}
return layer;
}
/**
* Get the layer of a Geo
*
* @param geo the geo
* @return the geo's layer
*/
public static int getLayer(GeoElement geo) {
return geo.getLayer();
}