Examples of ptolemy.kernel.util.Location

ptolemy.kernel.util.Location
An attribute that represents a location of a node in a schematic.
By default, an instance of this class is not visible in a user interface. This is indicated to the user interface by returning NONE to the getVisibility() method. The location is specified by calling setExpression() with a string that has the form "x,y" or "[x,y]" or "{x,y}", where x and y can be parsed into doubles.
The default location is a two dimensional location with value {0.0, 0.0}. This class can also handle locations with greater than two dimensions. @author Steve Neuendorffer and Edward A. Lee @version $Id: Location.java,v 1.65 2007/12/06 21:56:23 cxh Exp $ @since Ptolemy II 2.1 @Pt.ProposedRating Green (cxh) @Pt.AcceptedRating Green (cxh)

                    // NOTE: The cast is safe because it is checked
                    // above, and presumably a reasonable GUI would
                    // provide no mechanism for creating a port on
                    // something that is not an entity.
                    NamedObj newObject = ((Entity) toplevel).getPort(portName);
                    Location location = (Location) newObject
                            .getAttribute(locationName);
                    location.setLocation(point);
                }
            };


            request.setUndoable(true);
            toplevel.requestChange(request);

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        for (i = 0; i < linkedObjectList.size(); i++) {
            NamedObj object = (NamedObj) linkedObjectList.get(i);
            if (object instanceof Port) {
                object = object.getContainer();
            }
            Location location = (Location) object.getAttribute("_location");
            if (location != null) {
                double[] coordinate = location.getLocation();
                x += coordinate[0];
                y += coordinate[1];
                num++;
            }
        }

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