Points

Members

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datastore :DataStore

Description

DataStore object used to compute geometry

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datastore :DataStore

Description

DataStore object used to compute geometry

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maxSelectionDistance :number

Description

Max distance nearest neighbor search in km

Details

Type

number

Default Value

300

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maxSelectionDistance :number

Description

Max distance nearest neighbor search in km

Details

Type

number

Default Value

300

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maxSelectionCount :number

Description

Max number of nearest neighbors

Details

Type

number

Default Value

1

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maxSelectionCount :number

Description

Max number of nearest neighbors

Details

Type

number

Default Value

1

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maxDataPoints :number

Description

Max number of datapoints per buffer

Details

Type

number

Default Value

10000

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dataPointCount :number

Description

Current number of datapoints

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_resourceLoaded :boolean

Description

Have resources been loaded

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_resourceLoaded :boolean

Description

Have resources been loaded

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_isDirty :boolean

Description

Has current data been uploaded to webgl context

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_isDirty :boolean

Description

Has current data been uploaded to webgl context

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_hasGeometry :boolean

Description

Has any data been uploaded to webgl context

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_hasGeometry :boolean

Description

Has any data been uploaded to webgl context

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useTexture :bool

Description

Should the points sample from a texture

Details

Type

bool

Default Value

false

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createEmptyVertices

Description

Creates empty buffers with defined size

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extendVerticesBy

Description

Extend current buffers

Parameters

Name	Type	Description
size	number	amount to extend buffers by

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createCollisionGeo

Description

Unused function, required by drawable interface

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update

Description

Update uniforms for draw

Parameters

Name	Type	Description
gl	WebglContext	WebglContext
sceneProps	Object	Object of scene uniforms
time	number	frametime

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rayCastFrom

Description

Ray cast to points object

Parameters

Name	Type	Description
ray	Object	worldspace ray to cast

Returns

boolean

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hitTest

Description

Hit test to points object

Parameters

Name	Type	Description
ray	Object	worldspace ray to test

Returns

boolean

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onSelectionCB

Description

Callback fired when point(s) get selected

Parameters

Name	Type	Description
selection	Object	mutable list of points that got selected

Returns

Object

mutated selection object

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onSelection

Description

Hit test to points object

Parameters

Name	Type	Description
ray	Object	worldspace ray to test

Returns

boolean

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transform

Description

Mutate point by a data element

Parameters

Name	Type	Description
element	Object	data element to mutate point with
point	Object	single point drawable description

Returns

Object

mutated point object

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addGeojson

Description

Add points using geojson format

Parameters

Name	Type	Description
geojson	Object	Geojson data
onAdd	function	callback to fire when added

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addDataPoint

Description

Add datapoint using datastore format

Parameters

Name	Type	Description
dataPoint	Object	data in datastore format
onAdd	function	callback to fire when added

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updatePoint

Description

Updates point geometry in place. Note: position is in world space, color is in normalized RGBA, size is in pixels

Parameters

Name	Type	Description
dataPoint	Object	data index in datastore
params	Object	point parameters object with updated position, color, or size

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getNearest

Description

Get nearest points to target

Parameters

Name	Type	Description
lat	number	target latitude
lon	number	target longitude

Returns

Array

nearest points and distances

Methods

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init( gl )

Description

Initialize geometry & shaders in Webgl context

Parameters

Name	Type	Description
gl	WebGLContext	WebGL context

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draw( gl )

Description

Renders to the webgl context

Parameters

Name	Type	Description
gl	Webgl	Webgl context