ALKMaps.Control.DrawFeature

The DrawFeature control draws point, line or polygon features on a vector layer when active.

Inherits from

ALKMaps.Control

Summary

ALKMaps.Control.DrawFeature	The DrawFeature control draws point, line or polygon features on a vector layer when active.
Properties
layer	{ALKMaps.Layer.Vector}
callbacks	{Object} The functions that are sent to the handler for callback
events	{ALKMaps.Events} Events instance for listeners and triggering control specific events.
multi	{Boolean} Cast features to multi-part geometries before passing to the layer.
featureAdded	{Function} Called after each feature is added
handlerOptions	{Object} Used to set non-default properties on the control’s handler
Constructor
ALKMaps.Control.DrawFeature
Functions
drawFeature
insertXY	Insert a point in the current sketch given x & y coordinates.
insertDeltaXY	Insert a point given offsets from the previously inserted point.
insertDirectionLength	Insert a point in the current sketch given a direction and a length.
insertDeflectionLength	Insert a point in the current sketch given a deflection and a length.
undo	Remove the most recently added point in the current sketch geometry.
redo	Reinsert the most recently removed point resulting from an undo call.
finishSketch	Finishes the sketch without including the currently drawn point.
cancel	Cancel the current sketch.

Properties

layer

{ALKMaps.Layer.Vector}

callbacks

{Object} The functions that are sent to the handler for callback

events

{ALKMaps.Events} Events instance for listeners and triggering control specific events.

Register a listener for a particular event with the following syntax

control.events.register(type, obj, listener);

Supported event types (in addition to those from <ALKMaps.Control.events>)

featureadded

Triggered when a feature is added

multi

{Boolean} Cast features to multi-part geometries before passing to the layer. Default is false.

featureAdded

{Function} Called after each feature is added

handlerOptions

{Object} Used to set non-default properties on the control’s handler

Constructor

ALKMaps.Control.DrawFeature

Parameters

layer	{ALKMaps.Layer.Vector}
handler	{ALKMaps.Handler}
options	{Object}

Functions

drawFeature

drawFeature: function( geometry )

insertXY

insertXY: function( x,
y )

Insert a point in the current sketch given x & y coordinates.

Parameters

x	{Number} The x-coordinate of the point.
y	{Number} The y-coordinate of the point.

insertDeltaXY

insertDeltaXY: function( dx,
dy )

Insert a point given offsets from the previously inserted point.

Parameters

dx	{Number} The x-coordinate offset of the point.
dy	{Number} The y-coordinate offset of the point.

insertDirectionLength

insertDirectionLength: function( direction,
length )

Insert a point in the current sketch given a direction and a length.

Parameters

direction	{Number} Degrees clockwise from the positive x-axis.
length	{Number} Distance from the previously drawn point.

insertDeflectionLength

insertDeflectionLength: function( deflection,
length )

Insert a point in the current sketch given a deflection and a length. The deflection should be degrees clockwise from the previously digitized segment.

Parameters

deflection	{Number} Degrees clockwise from the previous segment.
length	{Number} Distance from the previously drawn point.

undo

undo: function()

Remove the most recently added point in the current sketch geometry.

Returns

{Boolean} An edit was undone.

redo

redo: function()

Reinsert the most recently removed point resulting from an undo call. The undo stack is deleted whenever a point is added by other means.

Returns

{Boolean} An edit was redone.

finishSketch

finishSketch: function()

Finishes the sketch without including the currently drawn point. This method can be called to terminate drawing programmatically instead of waiting for the user to end the sketch.

cancel

cancel: function()

Cancel the current sketch. This removes the current sketch and keeps the drawing control active.