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PolylineGeometry

new Cesium.PolylineGeometry(options)
engine/Source/Core/PolylineGeometry.js 100

A description of a polyline modeled as a line strip; the first two positions define a line segment, and each additional position defines a line segment from the previous position. The polyline is capable of displaying with a material.
Name Type Description
options object Object with the following properties:
Name Type Default Description
positions Array.<Cartesian3> An array of Cartesian3 defining the positions in the polyline as a line strip.
width number 1.0 optional The width in pixels.
colors Array.<Color> optional An Array of Color defining the per vertex or per segment colors.
colorsPerVertex boolean false optional A boolean that determines whether the colors will be flat across each segment of the line or interpolated across the vertices.
arcType ArcType ArcType.GEODESIC optional The type of line the polyline segments must follow.
granularity number CesiumMath.RADIANS_PER_DEGREE optional The distance, in radians, between each latitude and longitude if options.arcType is not ArcType.NONE. Determines the number of positions in the buffer.
vertexFormat VertexFormat VertexFormat.DEFAULT optional The vertex attributes to be computed.
ellipsoid Ellipsoid Ellipsoid.WGS84 optional The ellipsoid to be used as a reference.
Throws:
Example:
// A polyline with two connected line segments
const polyline = new Cesium.PolylineGeometry({
  positions : Cesium.Cartesian3.fromDegreesArray([
    0.0, 0.0,
    5.0, 0.0,
    5.0, 5.0
  ]),
  width : 10.0
});
const geometry = Cesium.PolylineGeometry.createGeometry(polyline);
Demo:
See:
  • PolylineGeometry#createGeometry

Members

packedLength : number
engine/Source/Core/PolylineGeometry.js 148

The number of elements used to pack the object into an array.

Methods

static Cesium.PolylineGeometry.createGeometry(polylineGeometry) → Geometry|undefined
engine/Source/Core/PolylineGeometry.js 299

Computes the geometric representation of a polyline, including its vertices, indices, and a bounding sphere.
Name Type Description
polylineGeometry PolylineGeometry A description of the polyline.
Returns:
The computed vertices and indices.

static Cesium.PolylineGeometry.pack(value, array, startingIndex) → Array.<number>
engine/Source/Core/PolylineGeometry.js 161

Stores the provided instance into the provided array.
Name Type Default Description
value PolylineGeometry The value to pack.
array Array.<number> The array to pack into.
startingIndex number 0 optional The index into the array at which to start packing the elements.
Returns:
The array that was packed into

static Cesium.PolylineGeometry.unpack(array, startingIndex, result) → PolylineGeometry
engine/Source/Core/PolylineGeometry.js 226

Retrieves an instance from a packed array.
Name Type Default Description
array Array.<number> The packed array.
startingIndex number 0 optional The starting index of the element to be unpacked.
result PolylineGeometry optional The object into which to store the result.
Returns:
The modified result parameter or a new PolylineGeometry instance if one was not provided.
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