Class: Point

var point = new SuperMap.Geometry.Point(-111.04, 45.68);

Extends

• SuperMap.Geometry

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;

tagstring

Used to store the type of point.

tagstring

It used to store the additional attributes, such as the z value in differential analysis.

xfloat

x-coordinate.

yfloat

y-coordinate.

Methods

calculateBounds()

Point.js, line 65

Calculate the bounds of the point object.

inherited 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.Point}

Point.js, line 49

Clone a point objects.

Returns:

Type	Description
SuperMap.Geometry.Point	The cloned point object.

destroy()

Point.js, line 114

Destroy the source of the point object.

equals(geom){boolean}

Point.js, line 74

Determine whether another geometry is equivalent to this one.

Name	Type	Description
geom	SuperMap.Geometry.Point	The geometry to test.

Returns:

Type	Description
boolean	The supplied geometry is equivalent to this geometry.

Example

var point= new SuperMap.Geometry.Point(0,0);
var point1={x:0,y:0};
var result= point.equals(point1);

inherited 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.

inherited 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

inherited 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}

Point.js, line 125

Return a list of all points in this geometry.

Name	Type	Description
nodes	boolean	optional This parameter does not work for point objects and returns directly to the point.

Returns:

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

move(x, y)

Point.js, line 94

Moves a geometry by the given displacement along positive x and y axes

Name	Type	Description
x	float	Distance to move geometry in positive x direction.
y	float	Distance to move geometry in positive y direction.

inherited setBounds(bounds)

Geometry.js, line 70

Set bounds of the geometric object.

Name	Type	Description
bounds	SuperMap.Bounds	bounds.

toShortString(){string}

Point.js, line 106

Returns:

Type	Description
string	The string represents the point object (ex. "5, 42").