SliceViewModel | API Reference | ArcGIS Maps SDK for JavaScript 4.32

Provides the logic for the Slice widget. SliceViewModel provides access to the slice plane and the layers that can be excluded from the slice widget.

See also

Constructors

SliceViewModel Constructor new SliceViewModel(properties)

Parameter

properties Object

optional

See the properties for a list of all the properties that may be passed into the constructor.

Property Overview

Any properties can be set, retrieved or listened to. See the Watch for changes topic.

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Type	Summary	Class
SliceAnalysis	The slice analysis object being created or modified by the view model.	SliceViewModel
String	The name of the class.	Accessor
Boolean	Indicates whether the Ground and layers that are draped on the ground surface are excluded from the slice.	SliceViewModel
Collection<(Layer\|BuildingComponentSublayer)>	Add layers to this collection to exclude them from the slice.	SliceViewModel
SlicePlane\|null\|undefined	The shape used to slice elements in a 3D scene.	SliceViewModel
String	The view model's state.	SliceViewModel
Boolean	Enable tilting the slice shape.	SliceViewModel
SceneView\|null\|undefined	The view from which the widget will operate.	SliceViewModel

Property Details

analysis Property analysis SliceAnalysis Since: ArcGIS Maps SDK for JavaScript 4.23 SliceViewModel since 4.10, analysis added at 4.23.

The slice analysis object being created or modified by the view model.

This property can be set during view model construction, to provide an existing analysis to the view model for modification. Properties on the analysis can also be updated once it's assigned to the view model.

If no analysis is provided during view model construction, the view model automatically creates its own analysis and adds it to the view. In this case, the analysis will also be automatically removed from the view when the view model is destroyed.

Example

// Construct a slice analysis object outside of the view model
const sliceAnalysis = new SliceAnalysis({
  shape: {
    type: "plane", // autocasts as new SlicePlane()
    position: {
      type: "point",
      x: -0.1,
      y: 51.5
    },
    width: 50,
    height: 50,
    tilt: 45
  },
  tiltEnabled: true
});

// Ensure that the analysis is added to the view
view.analyses.add(sliceAnalysis);

// Frame the analysis in the view
view.goTo(sliceAnalysis.extent);

// Pass the analysis object as a constructor parameter to modify it using the view model
const sliceViewModel = new SliceViewModel({
  analysis: sliceAnalysis,
  view: view
});

declaredClass Inherited Property declaredClass Stringreadonly Inherited from Accessor

The name of the class. The declared class name is formatted as esri.folder.className.

excludeGroundSurface Property excludeGroundSurface Boolean

Indicates whether the Ground and layers that are draped on the ground surface are excluded from the slice.

Default Value:false

excludedLayers Property excludedLayers Collection<(Layer|BuildingComponentSublayer)>autocast

Add layers to this collection to exclude them from the slice. Layers that are draped on the ground surface are not affected by this property

shape Property shape SlicePlane |null |undefinedautocast Since: ArcGIS Maps SDK for JavaScript 4.16 SliceViewModel since 4.10, shape added at 4.16.

The shape used to slice elements in a 3D scene. Currently the only supported shape is a plane.

Example

// Clone the shape to modify its properties
const shape = sliceViewModel.shape.clone();

// Set new values for heading and tilt
shape.heading = 180;
shape.tilt = 45;

// Set the new properties on the slice view model's shape
sliceViewModel.shape = shape;

state Property state Stringreadonly

The view model's state.

Value	Description
disabled	not ready yet
ready	ready for slicing
slicing	currently slicing
sliced	finished slicing

Possible Values:"disabled" |"ready" |"slicing" |"sliced"

Default Value:"disabled"

tiltEnabled Property tiltEnabled Boolean Since: ArcGIS Maps SDK for JavaScript 4.16 SliceViewModel since 4.10, tiltEnabled added at 4.16.

Enable tilting the slice shape. If set to true, the slice shape will orient itself as best as possible to the surface under the cursor when first placing the shape. If set to false, the slice shape is restricted to be either horizontal or vertical.

Default Value:false

view Property view SceneView |null |undefined

The view from which the widget will operate.

Method Overview

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Return Type	Summary	Class
	Adds one or more handles which are to be tied to the lifecycle of the object.	Accessor
	Clears the shape of the slice, effectively removing it from the view.	SliceViewModel
Boolean	Returns true if a named group of handles exist.	Accessor
	Removes a group of handles owned by the object.	Accessor
	Starts the interactive creation of a new slice, clearing the previous shape.	SliceViewModel

Method Details

addHandles Inherited Method addHandles(handleOrHandles, groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, addHandles added at 4.25.

Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.

// Manually manage handles
const handle = reactiveUtils.when(
  () => !view.updating,
  () => {
    wkidSelect.disabled = false;
  },
  { once: true }
);

this.addHandles(handle);

// Destroy the object
this.destroy();

Parameters

handleOrHandles WatchHandle|WatchHandle []

Handles marked for removal once the object is destroyed.

groupKey *

optional

Key identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.

clear Method clear() Since: ArcGIS Maps SDK for JavaScript 4.16 SliceViewModel since 4.10, clear added at 4.16.

Clears the shape of the slice, effectively removing it from the view. Other properties like excludedLayers and excludeGroundSurface are not modified.

hasHandles Inherited Method hasHandles(groupKey){Boolean} Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, hasHandles added at 4.25.

Returns true if a named group of handles exist.

Parameter

groupKey *

optional

A group key.

Returns

Type	Description
Boolean	Returns `true` if a named group of handles exist.

Example

// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
  obj.removeHandles("watch-view-updates");
}

removeHandles Inherited Method removeHandles(groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, removeHandles added at 4.25.

Removes a group of handles owned by the object.

Parameter

groupKey *

optional

A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");

start Method start() Since: ArcGIS Maps SDK for JavaScript 4.16 SliceViewModel since 4.10, start added at 4.16.

Starts the interactive creation of a new slice, clearing the previous shape.