# MeasurePolygonAreaOperator

class Operators.Measure.MeasurePolygonAreaOperator()

  This operator allows you to create a polygon and measure its area. Click to add points to the polygon. A cursor will show where the point will be placed. The operator will perform vertex snapping by default. Holding down the alt key will disable this feature. To complete a measurement, double click when placing a point. When there is no active measurement being created, click on a text box to drag and reposition it relative to its anchor point. If a measurement is currently being created, pressing the Escape key will discard it, otherwise the last created measurement will be discarded.

Methods

- `_clearMeasurement()`

- `_pickExisting()`

- `addMapping()`

- `clearMapping()`

- `setAnchor()`

- `setMapping()`

## Methods

### _clearMeasurement

MeasurePolygonAreaOperator._clearMeasurement()
  Return type

    void

### _pickExisting

MeasurePolygonAreaOperator._pickExisting(selectPoint)
  Arguments

    - selectPoint (`Point2()`) – None

  Return type

    boolean

### addMapping

MeasurePolygonAreaOperator.addMapping(button, modifier)
  Arguments

    - button (`Button()`) – None

    - modifier (`KeyModifiers()`) – None

  Adds a button and key modifier mapping for the operator. If no mapping is provided, all combinations are considered valid. All mappings require a mouse button, but a key modifier is optional.

  Return type

    void

### clearMapping

MeasurePolygonAreaOperator.clearMapping()

  Clears any button and key modifier mappings for the operator.

  Return type

    void

### setAnchor

MeasurePolygonAreaOperator.setAnchor(anchor)
  Arguments

    - anchor (`MeasurePolygonAreaAnchor()`) – None

  Sets the anchor type that will be set for markups created by this operator.

  Return type

    void

### setMapping

MeasurePolygonAreaOperator.setMapping(button, modifier)
  Arguments

    - button (`Button()`) – None

    - modifier (`KeyModifiers()`) – None

  Sets the button and key modifier mapping for the operator.

  Return type

    void