Module: ol/renderer/webgl/PointsLayer

Classes

WebGLPointsLayerRenderer

Type Definitions

CustomAttribute{Object}

A description of a custom attribute to be passed on to the GPU, with a value different for each feature.

Properties:

Name	Type	Description
name	string	Attribute name.
callback	function	This callback computes the numerical value of the attribute for a given feature (properties are available as 2nd arg for quicker access).

FeatureCacheItem{Object}

Object that holds a reference to a feature, its geometry and properties. Used to optimize rebuildBuffers by accessing these objects quicker.

Properties:

Name	Type	Description
feature	Feature	Feature
properties	Object.<string, *>	Feature properties
geometry	Geometry	Feature geometry

Options{Object}

Properties:

Name	Type	Argument	Default	Description
className	string	<optional>	'ol-layer'	A CSS class name to set to the canvas element.
attributes	Array<CustomAttribute>	<optional>		These attributes will be read from the features in the source and then passed to the GPU. The name property of each attribute will serve as its identifier: In the vertex shader as an attribute by prefixing it with a_ In the fragment shader as a varying by prefixing it with v_ Please note that these can only be numerical values.
vertexShader	string			Vertex shader source, mandatory.
fragmentShader	string			Fragment shader source, mandatory.
hitVertexShader	string	<optional>		Vertex shader source for hit detection rendering.
hitFragmentShader	string	<optional>		Fragment shader source for hit detection rendering.
uniforms	Object	<optional>		Uniform definitions for the post process steps Please note that u_texture is reserved for the main texture slot and u_opacity is reserved for the layer opacity.
postProcesses	Array<PostProcessesOptions>	<optional>		Post-processes definitions