3D callout line doesn't work with client-side graphics - arcgis

Question

I am struggling to use callout line with client-side graphics.
I followed the "Point styles for cities" example which uses a feature layer from the "LyonPointsOfInterest (FeatureServer)".
But it doesn't work with a feature layer which creates client-side graphics based on data returned from a web service.
Is there a limitation on 3d callout line?
Here's my code snippet:
Create a feature layer based on layer definition:
featureLayer = new FeatureLayer({
fields: this.layerDefinition.fields,
objectIdField: this.layerDefinition.objectIdField,
geometryType: this.layerDefinition.geometryType,
id: this.layerId
});
Set elevation and feature reduction and renderer:
featureLayer.elevationInfo = {
// elevation mode that will place points on top of the buildings or other SceneLayer 3D objects
mode: "relative-to-scene"
};
// feature reduction is set to selection because our scene contains too many points and they overlap
featureLayer.featureReduction = {
type: "selection"
};
featureLayer.renderer = this._getUniqueValueRenderer() as any as Renderer// callout render
Here the renderer code:
_getUniqueValueRenderer() {
let verticalOffset = { // verticalOffset shifts the symbol vertically
screenLength: 150, // callout line length
maxWorldLength: 200,
minWorldLength: 35
},
uniqueValueRenderer = {
type: "unique-value", // autocasts as new UniqueValueRenderer()
field: "AQHI",
uniqueValueInfos: [{
value: 1,
symbol: this._get3DCallOutSymbol(verticalOffset, "Museum.png", "#D13470")
}, {
value: 2,
symbol: this._get3DCallOutSymbol(verticalOffset, "Restaurant.png", "#F97C5A")
}, {
value: 3,
symbol: this._get3DCallOutSymbol(verticalOffset, "Church.png", "#884614")
}, {
value: 4,
symbol: this._get3DCallOutSymbol(verticalOffset, "Hotel.png", "#56B2D6")
}, {
value: 5,
symbol: this._get3DCallOutSymbol(verticalOffset, "Park.png", "#40C2B4")
}, {
value: 6,
symbol: this._get3DCallOutSymbol(verticalOffset, "Museum.png", "#D13470")
}, {
value: 7,
symbol: this._get3DCallOutSymbol(verticalOffset, "beer.png", "#F97C5A")
}, {
value: 8,
symbol: this._get3DCallOutSymbol(verticalOffset, "senate.png", "#884614")
}, {
value: 9,
symbol: this._get3DCallOutSymbol(verticalOffset, "Hotel.png", "#56B2D6")
}, {
value: 10,
symbol: this._get3DCallOutSymbol(verticalOffset, "Park.png", "#40C2B4")
}
]};
return uniqueValueRenderer;
}
_get3DCallOutSymbol(verticalOffset: any, iconName: string, color: string) {
return {
type: "point-3d", // autocasts as new PointSymbol3D()
symbolLayers: [{
type: "icon", // autocasts as new IconSymbol3DLayer()
resource: {
href: this.iconPath + iconName
},
size: 20,
outline: {
color: "white",
size: 2
}
}],
verticalOffset: verticalOffset,
callout: {
type: "line", // autocasts as new LineCallout3D()
color: "white",
size: 2,
border: {
color: color
}
}
};
}
Set source to an array of graphics, generated based web service data
featureLayer.source = graphics;

Answer 1

You should not use this.layerDefinition in the instanciation a your new FeatureLayer, but put it in a new var. Idem for this.layerId :
var layerDef = this.layerDefinition;
var lyrId = this.layerId;
featureLayer = new FeatureLayer({
fields: layerDef.fields,
objectIdField: layerDef.objectIdField,
geometryType: layerDef.geometryType,
id: lyrId
});
because this. at this place, is in the scope of new Feature()