gl-pointcloud2d

gl-pointcloud2d

WebGL 2D point cloud for lots of points

Example

... to be created

Install

Using npm, you can install this module as follows:

npm i gl-pointcloud2d

API

Constructor

var pointcloud = require('gl-pointcloud2d')(plot, options)

Creates a new 2D point cloud.

• plot is a reference to a gl-plot2d object
• options is a JSON object containing the parameters which are passed to the object when it is updated.

options has the following properties:

• data is a packed 2*n length array of the unrolled xy coordinates of the points (required) - buffering is significantly faster if it's of type Float32Array
• idToIndex is an optional array of length n where idToIndex[i] = i - buffering is significantly faster if it's supplied and of type Int32Array
• color is the color of a marker as a length 4 RGBA array (default [1,0,0,1])
• borderSize is the ratio of the border around each point (default 0)
• borderColor is the color of the border of each point (default [0,0,0,1])
• blend determines if gl blending is enabled for a translucency effect on overlaps; enabling it lowers draw speed somewhat (default false)

Returns A new point cloud plot object, which is also registered to plot

Methods

pointcloud.update(options)

Updates the point cloud plot.

• options is an object with the same properties as in the point cloud plot constructor

pointcloud.dispose()

Destroys the point cloud plot and all associated resources.

License

(c) 2015 Mikola Lysenko. MIT License

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