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ObjectSymbol3DLayer | API Reference | ArcGIS Maps SDK for JavaScript 4.33

ESM: import ObjectSymbol3DLayer from "@arcgis/core/symbols/ObjectSymbol3DLayer.js";

CDN: const ObjectSymbol3DLayer = await $arcgis.import("@arcgis/core/symbols/ObjectSymbol3DLayer.js");

Class: @arcgis/core/symbols/ObjectSymbol3DLayer

Since: ArcGIS Maps SDK for JavaScript 4.0

ObjectSymbol3DLayer is used to render Point geometries using a volumetric 3D shape (e.g., a sphere or cylinder) with a PointSymbol3D in a SceneView. MapView does not support 3D symbols. Polygon features may also be rendered with ObjectSymbol3DLayers, but the object symbol layer must be contained in a PolygonSymbol3D, not a PointSymbol3D in this scenario.

The shape of the object is set in the resource property and the color of the object is set in the material property. The size of the object is always defined in meters. Size can be directly set in the height, width, and depth properties. Object color and size can also be data-driven by adding size and/or color visual variables to any Renderer that uses this symbol layer.

ObjectSymbol3DLayers must be added to the symbolLayers property of either PointSymbol3D or PolygonSymbol3D symbols. Multiple symbol layers may be used in a single symbol. The image below depicts a point FeatureLayer whose features are symbolized with a PointSymbol3D containing a cylinder-based ObjectSymbol3DLayer.

See Symbol3DLayer and Symbol3D to read more general information about 3D symbols, symbol layers and how they relate to one another.

See also

• Symbol Builder

• Sample - Flat vs. volumetric 3D symbol layers

• Sample - Visualize features thematically with multiple variables (3D)

• Sample - Visualize features with realistic 3D symbols

• Symbol3DLayer
• Symbol3D
• Renderer

• ArcGIS blog - Working with objects, paths, and extrusion

• ArcGIS blog - Using attributes to represent real-world sizes of features

Examples

// symbol using a cylinder as a resource
const symbol = new PointSymbol3D ({
  symbolLayers: [ new ObjectSymbol3DLayer({
    width: 5,  // diameter of the object from east to west in meters
    height: 20,  // height of the object in meters
    depth: 15,  // diameter of the object from north to south in meters
    resource: { primitive: "cylinder" },
    material: { color: "red" }
  })]
});

// symbol using a glTF 3D model as a resource
const symbol = new PointSymbol3D({
  symbolLayers: [ new ObjectSymbol3DLayer({
    resource: {
      href: "../3d-assets/model.gltf"
    },
    height: 3,
    material: {
      color: "red"
    }
  })]
});

ObjectSymbol3DLayer Constructor new ObjectSymbol3DLayer(properties)

Parameter

optional

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

Show inherited properties Hide inherited properties

The positioning of the symbol relative to the geometry. The default behavior (origin) depends on the resource:

• For sphere, cube and diamond primitives, the origin is at the center.
• For cylinder, cone, inverted-cone and tetrahedron primitives, the origin is at the bottom.
• For href resources, the origin coincides with the origin of the 3D model.

If anchor is set to relative, the anchor is defined by anchorPosition as a fraction of the symbol's bounding box.

Possible Values:"center" |"top" |"bottom" |"origin" |"relative"

Since: ArcGIS Maps SDK for JavaScript 4.10 ObjectSymbol3DLayer since 4.0, anchorPosition added at 4.10.

Defines the anchor relative to the center of the symbol layer resource. It is specified as a ratio of the resource's bounding box dimensions. For example, a value of { x: 0, y: 0, z: 0 } designates the center, while a value of { x: -0.5, y: -0.5, z: -0.5 } places the symbol at the lower south-west corner of the symbol's bounding box.

This property only applies when anchor is set to relative.

Properties

Value defining the position relative to the x axis of the bounding box.

Value defining the position relative to the y axis of the bounding box.

Value defining the position relative to the z axis of the bounding box.

Examples

symbolLayer.anchor = "relative";
symbolLayer.anchorPosition = { x: 0, y: 0, z: -0.5 }; // equivalent to `anchor: "bottom"`

symbolLayer.anchor = "relative";
symbolLayer.anchorPosition = { x: 1.5, y: 1, z: 0 }; // the anchor can be placed outside of the symbol's bounding box

castShadows Property castShadows Boolean

Since: ArcGIS Maps SDK for JavaScript 4.11 ObjectSymbol3DLayer since 4.0, castShadows added at 4.11.

Indicates whether the symbol layer geometry casts shadows in the scene. Setting this property to false will disable shadows for the symbol layer even if direct shadows are enabled in SceneView.environment.

Example

// disables shadow casting
symbolLayer.castShadows = false;

declaredClass

Inherited

Property declaredClass Stringreadonly

Since: ArcGIS Maps SDK for JavaScript 4.7 Accessor since 4.0, declaredClass added at 4.7.

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

The depth, or diameter from north to south, of the object in meters. If undefined, the depth will be calculated to maintain the original proportions of the object.

Example

// depth of the symbol in meters
symbolLayer.depth = 5000;

The clockwise rotation of the symbol in the horizontal plane (i.e., around the z axis). The rotation is specified in degrees and is relative to the y-axis.

If the symbol resource is aligned such that its forward facing side points in the direction of the y-axis (the y-axis always points North in WGS84 or WebMercator coordinates), its upwards facing side is pointing in the direction of the z-axis, and its right-hand side points in the direction of the x-axis (the x-axis always points East in WGS84 or WebMercator coordinates), then this angle corresponds to the heading of the symbol.

Example

// heading of the symbol in degrees
symbolLayer.heading = 180;

The height of the object in meters. If undefined, the height will be calculated to maintain the original proportions of the object.

Example

// height of the symbol in meters
symbolLayer.height = 1000;

The material used to shade the object. This property defines the object's color.

Property

The fill color of the object. If the object has textures, the textures will be multiplied with the color. This can be autocast with an array of rgb(a) values, named string, hex string or an hsl(a) string, an object with r, g, b, and a properties, or a Color object.

Examples

// CSS color string
symbolLayer.material = {
  color: "dodgerblue"
};

// HEX string
symbolLayer.material = {
  color: "#33cc33";
}

// array of RGBA values
symbolLayer.material = {
  color: [51, 204, 51, 0.3];
}

// object with rgba properties
symbolLayer.material = {
  color: {
    r: 51,
    g: 51,
    b: 204,
    a: 0.7
  }
};

The primitive shape (primitive) or external 3D model (href) used to visualize the points. If both properties are present, primitive takes precedence and href is ignored. When using the href property, external 3D models must be present in glTF format.

Since: ArcGIS Maps SDK for JavaScript 4.4 ObjectSymbol3DLayer since 4.0, roll added at 4.4.

The rotation of the symbol in the lateral vertical plane (i.e., around the y axis). The rotation is specified in degrees and is relative to the x-axis. At 0 degrees, the model is level. A positive value lifts the left part and lowers the right part of the model.

If the symbol resource is aligned such that its forward facing side points in the direction of the y-axis (the y-axis always points North in WGS84 or WebMercator coordinates), its upwards facing side is pointing in the direction of the z-axis, and its right-hand side points in the direction of the x-axis (the x-axis always points East in WGS84 or WebMercator coordinates), then this angle corresponds to the roll of the symbol.

Example

// roll of the symbol in degrees
symbolLayer.roll = 90;

Since: ArcGIS Maps SDK for JavaScript 4.4 ObjectSymbol3DLayer since 4.0, tilt added at 4.4.

The rotation of the symbol in the longitudinal vertical plane (i.e., around the x axis). The rotation is specified in degrees and is relative to the y-axis. At 0 degrees, the model is level. A positive value points lifts the front and lowers the back of the model.

If the symbol resource is aligned such that its forward facing side points in the direction of the y-axis (the y-axis always points North in WGS84 or WebMercator coordinates), its upwards facing side is pointing in the direction of the z-axis, and its right-hand side points in the direction of the x-axis (the x-axis always points East in WGS84 or WebMercator coordinates), then this angle corresponds to the tilt of the symbol.

Example

// tilt of the symbol in degrees
symbolLayer.tilt = 45;

The width, or diameter from east to west, of the object in meters. If undefined, the width will be calculated to maintain the original proportions of the object.

Example

// width of the symbol in meters
symbolLayer.width = 5000;

Show inherited methods Hide inherited methods

addHandles

Inherited

Method addHandles(handleOrHandles, groupKey)

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

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.

Creates a deep clone of the symbol layer.

Returns

Example

// Creates a deep clone of the graphic's first symbol layer
let symLyr = graphic.symbol.symbolLayers.at(0).clone();

fromJSON

Inherited

Method fromJSON(json){* |null |undefined}static

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Returns

Type Description * | null | undefined Returns a new instance of this class.

hasHandles

Inherited

Method hasHandles(groupKey){Boolean}

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)

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");

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