Class: Geometry

Classes

Collection

Curve

GeoText

LinearRing

LineString

MultiLineString

MultiPoint

MultiPolygon

Point

Polygon

Rectangle

Members

boundsSuperMap.Bounds

Bounds of the geometric object.

idstring

The unique identifier of the geometric object.

parentSuperMap.Geometry

This is set when a Geometry is added as component of another geometry

SRIDinterger

Projection coordinate parameter. By this parameter, server will determine whether the geometry object's coordinate reference is as the same as dataset, if not, then change projection before adding into database.

Example

var geometry= new SuperMap.Geometry();
  geometry. SRID=4326;

Methods

calculateBounds()

Geometry.js, line 125

Recomputes the boundary of the geometric graphic.(This should be overridden by subclasses.)

clearBounds()

Geometry.js, line 82

clear bounds of the geometric object. If the object has a parent class, it also clears the bounds of the parent class geometry object.

clone(){SuperMap.Geometry}

Geometry.js, line 60

Creates cloned geometric graphics. Non-standard properties should not be set for cloned geometric graphics.

Returns:

Type	Description
SuperMap.Geometry	Clones a geometric figure.

destroy()

Geometry.js, line 49

Deconstruct the Geometry class and release the resources.

extendBounds(newBounds)

Geometry.js, line 95

Extend the existing bounds to include the new bounds. If geometry's bounds is not yet set, then set a new Bounds.

Name	Type	Description
newBounds	SuperMap.Bounds	New bounds.

getArea(){float}

Geometry.js, line 144

Calculating the area of the geometric object. This method needs to be realized in the subclass.

Returns:

Type	Description
float	The area of the collection by summing its parts

getBounds(){SuperMap.Bounds}

Geometry.js, line 112

Gets the boundary of the geometric graphic. If not set, it can be acquired through computing.

Returns:

Type	Description
SuperMap.Bounds	Returns the bounds of the geometry.

getVertices(nodes){Array}

Geometry.js, line 135

Returns the list of all vertices of the geometric graphic. (This method needs to be realized in the subclass).

Name	Type	Description
nodes	boolean	optional If true, only returns the end point of a line; if false, only returns the vertex; and default is to return the vertex.

Returns:

Type	Description
Array	A list of all vertices in the geometry.

setBounds(bounds)

Geometry.js, line 70

Set bounds of the geometric object.

Name	Type	Description
bounds	SuperMap.Bounds	bounds.