java.lang.Object
- javax.swing.AbstractAction
- - org.openstreetmap.josm.actions.JosmAction
  - - org.openstreetmap.josm.actions.AlignInCircleAction

All Implemented Interfaces:

java.awt.event.ActionListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, javax.swing.Action, Destroyable
```
public final class AlignInCircleAction
extends JosmAction
```
Aligns all selected nodes within a circle. (Useful for roundabouts)

Since:

146

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class AlignInCircleAction.InvalidSelection
InvalidSelection exception has to be raised when action can't be performed
- Nested classes/interfaces inherited from class org.openstreetmap.josm.actions.JosmAction
  JosmAction.ActiveLayerChangeAdapter, JosmAction.LayerChangeAdapter, JosmAction.SelectionChangeAdapter

Field Summary
- Fields inherited from class org.openstreetmap.josm.actions.JosmAction
  sc
- Fields inherited from class javax.swing.AbstractAction
  changeSupport, enabled
- Fields inherited from interface javax.swing.Action
  ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

Constructors
Constructor Description

AlignInCircleAction()
Constructs a new AlignInCircleAction.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`actionPerformed(java.awt.event.ActionEvent e)`	Perform AlignInCircle action.
`static void`	`addMoveCommandIfNeeded(Node n, PolarCoor coor, java.util.List<Command> cmds)`	Add a `MoveCommand` to move a node to a PolarCoor if there is a significant move.
`static Command`	`buildCommand(DataSet ds)`	Builds "align in circle" command depending on the selected objects.
`private static java.util.List<Node>`	`collectNodesAnticlockwise(java.util.List<Way> ways)`	Assuming all ways can be joined into polygon, create an ordered list of node.
`private static java.util.List<Node>`	`collectNodesWithExternReferrers(java.util.List<Way> ways)`	Collect all nodes with more than one referrer.
`static Command`	`moveNodesCommand(java.util.List<Node> nodes, java.util.Set<Node> fixNodes, EastNorth center, double radius)`	Move each node of the list of nodes to be arranged in a circle.
`private static java.util.List<Node>`	`sortByAngle(java.util.List<Node> nodes)`
`protected void`	`updateEnabledState()`	Override in subclasses to update the enabled state of the action when something in the JOSM state changes, i.e.
`protected void`	`updateEnabledState(java.util.Collection<? extends OsmPrimitive> selection)`	Override in subclasses to update the enabled state of the action if the collection of selected primitives changes.
`private static boolean`	`validateGeometry(java.util.List<Node> nodes)`

Methods inherited from class org.openstreetmap.josm.actions.JosmAction
buildActiveLayerChangeAdapter, buildLayerChangeAdapter, checkAndConfirmOutlyingOperation, destroy, getLayerManager, getShortcut, initEnabledState, installAdapters, listenToLayerChange, listenToSelectionChange, setHelpId, setToolbarId, setTooltip, updateEnabledStateOnCurrentSelection, updateEnabledStateOnCurrentSelection, updateEnabledStateOnModifiableSelection, waitFuture

Methods inherited from class javax.swing.AbstractAction
addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.swing.Action
accept

- Constructor Detail
  - AlignInCircleAction
```
public AlignInCircleAction()
```
    Constructs a new AlignInCircleAction.
- Method Detail
  - addMoveCommandIfNeeded
```
public static void addMoveCommandIfNeeded(Node n,
                                          PolarCoor coor,
                                          java.util.List<Command> cmds)
```
    Add a MoveCommand to move a node to a PolarCoor if there is a significant move.
    
    Parameters:
    
    n - Node to move
    
    coor - polar coordinate where to move the node
    
    cmds - list of commands
    
    Since:
    
    17386
  - actionPerformed
```
public void actionPerformed(java.awt.event.ActionEvent e)
```
    Perform AlignInCircle action.
  - buildCommand
```
public static Command buildCommand(DataSet ds)
                            throws AlignInCircleAction.InvalidSelection
```
    Builds "align in circle" command depending on the selected objects. A fixed node is a node for which it is forbidden to change the angle relative to center of the circle. All other nodes are uniformly distributed.
    Case 1: One unclosed way. → allow action, and align selected way nodes If nodes contained by this way are selected, there are fix. If nodes outside from the way are selected there are ignored.
    Case 2: One or more ways are selected and can be joined into a polygon → allow action, and align selected ways nodes If 1 node outside of way is selected, it became center If 1 node outside and 1 node inside are selected there define center and radius If no outside node and 2 inside nodes are selected those 2 nodes define diameter In all other cases outside nodes are ignored In all cases, selected nodes are fix, nodes with more than one referrers are fix (first referrer is the selected way)
    Case 3: Only nodes are selected → Align these nodes, all are fix
    Case 4: Circularize selected ways → Circularize each way of the selection.
    
    Parameters:
    
    ds - data set in which the command operates
    
    Returns:
    
    the resulting command to execute to perform action, or null if nothing was changed
    
    Throws:
    
    AlignInCircleAction.InvalidSelection - if selection cannot be used
    
    Since:
    
    17386
  - moveNodesCommand
```
public static Command moveNodesCommand(java.util.List<Node> nodes,
                                       java.util.Set<Node> fixNodes,
                                       EastNorth center,
                                       double radius)
```
    Move each node of the list of nodes to be arranged in a circle.
    
    Parameters:
    
    nodes - The list of nodes to be moved.
    
    fixNodes - The list of nodes that must not be moved.
    
    center - A center of the circle formed by the nodes.
    
    radius - A radius of the circle formed by the nodes.
    
    Returns:
    
    the command that arranges the nodes in a circle.
    
    Since:
    
    18615
  - sortByAngle
```
private static java.util.List<Node> sortByAngle(java.util.List<Node> nodes)
```
  - validateGeometry
```
private static boolean validateGeometry(java.util.List<Node> nodes)
```
  - collectNodesWithExternReferrers
```
private static java.util.List<Node> collectNodesWithExternReferrers(java.util.List<Way> ways)
```
    Collect all nodes with more than one referrer.
    
    Parameters:
    
    ways - Ways from witch nodes are selected
    
    Returns:
    
    List of nodes with more than one referrer
  - collectNodesAnticlockwise
```
private static java.util.List<Node> collectNodesAnticlockwise(java.util.List<Way> ways)
                                                       throws AlignInCircleAction.InvalidSelection
```
    Assuming all ways can be joined into polygon, create an ordered list of node.
    
    Parameters:
    
    ways - List of ways to be joined
    
    Returns:
    
    Nodes anticlockwise ordered
    
    Throws:
    
    AlignInCircleAction.InvalidSelection - if selection cannot be used
  - updateEnabledState
```
protected void updateEnabledState()
```
    Description copied from class: JosmAction
    
    Override in subclasses to update the enabled state of the action when something in the JOSM state changes, i.e. when a layer is removed or added. See JosmAction.updateEnabledState(Collection) to respond to changes in the collection of selected primitives. Default behavior is empty.
    
    Overrides:
    
    updateEnabledState in class JosmAction
    
    See Also:
    
    JosmAction.updateEnabledState(Collection), JosmAction.initEnabledState(), JosmAction.listenToLayerChange()
  - updateEnabledState
```
protected void updateEnabledState(java.util.Collection<? extends OsmPrimitive> selection)
```
    Description copied from class: JosmAction
    
    Override in subclasses to update the enabled state of the action if the collection of selected primitives changes. This method is called with the new selection.
    
    Overrides:
    
    updateEnabledState in class JosmAction
    
    Parameters:
    
    selection - the collection of selected primitives; may be empty, but not null
    
    See Also:
    
    JosmAction.updateEnabledState(), JosmAction.initEnabledState(), JosmAction.listenToSelectionChange()

Class AlignInCircleAction

Nested Class Summary

Nested classes/interfaces inherited from class org.openstreetmap.josm.actions.JosmAction

Field Summary

Fields inherited from class org.openstreetmap.josm.actions.JosmAction

Fields inherited from class javax.swing.AbstractAction

Fields inherited from interface javax.swing.Action

Constructor Summary

Method Summary

Methods inherited from class org.openstreetmap.josm.actions.JosmAction

Methods inherited from class javax.swing.AbstractAction

Methods inherited from class java.lang.Object

Methods inherited from interface javax.swing.Action

Constructor Detail

AlignInCircleAction

Method Detail

addMoveCommandIfNeeded

actionPerformed

buildCommand

moveNodesCommand

sortByAngle

validateGeometry

collectNodesWithExternReferrers

collectNodesAnticlockwise

updateEnabledState

updateEnabledState