Namespace: render

Classes

RenderEngine

Style

Namespaces

harp

p2d

webgl

Members

H.map.render.RenderState static

The rendering states of the layer.

Properties:

Name	Description
PENDING	Data loading/processing is still in progress, but there is nothing to render. In this state rendering engine might go to sleep mode after certain amount of time to prevent draining of battery on the user device.
ACTIVE	Data rendering or animation is in progress.
DONE	Data rendering or animation is done.

Type Definitions

H.map.render.RenderingParams Object

An object containing rendering parameters.

Properties:

Name	Type	Description
boundingBox	H.geo.Rect	The rectangular geographical area to render. Note that it is not the same as visible viewport. The bounding box also include H.Map.Options#margin and optionally an additional margin in case of DOM-node rendering for a better rendering experience.
zoom	number	The zoom level to render the data for.
screenCenter	H.math.Point	The coordinates of the screen center in CSS pixels.
priorityCenter	H.math.Point	The coordinates relative to the screen center where the rendering has the highest priority. If the layer has to request and/or process data asynchronously, it's recommended to prioritize the rendering close to this center.
projection	H.geo.PixelProjection	The pixel projection to use to project geographical coordinates into screen coordinates and vice versa.
cacheOnly	boolean	Indicates whether only cached data should be considered.
size	H.math.Size	The size of the area to render.
pixelRatio	number	The pixelRatio to use for over-sampling in cases of high-resolution displays.

Interface Definitions

H.map.render.ICapabilities

This interface describes render engine capabilities, such as the minimum and maximum zoom level, camera angles, etc.