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Class: BabylonRenderer<ResultT>

@geenee/bodyrenderers-babylon.BabylonRenderer

Generic babylon.js renderer

Extends @geenee/armature!SceneRenderer for the babylon.js rendering engine. BabylonRenderer does basic initialization of engine, scene, and camera. It's a generic class that should be parameterized by type of processing results to build an app using particular implementation of @geenee/armature!Processor.

Type parameters

NameTypeDescription
ResultTextends Object = Type of processing results

Hierarchy

Constructors

constructor

new BabylonRenderer<ResultT>(container, mode?, mirror?)

Constructor

Type parameters

NameType
ResultTextends Object =

Parameters

NameTypeDescription
containerHTMLElementContainer of @geenee/armature!ResponsiveCanvas
mode?CanvasModeFitting mode
mirror?booleanMirror the output

Overrides

SceneRenderer.constructor

Properties

camera

Protected camera: UniversalCamera

Camera instance


cameraAngle

Protected cameraAngle: number

Camera vertical angle in radians

Inherited from

SceneRenderer.cameraAngle


cameraRatio

Protected cameraRatio: number

Camera aspect ratio

Inherited from

SceneRenderer.cameraRatio


canvas

canvas: ResponsiveCanvas

Responsive canvas

Inherited from

SceneRenderer.canvas


current

current: null | WebGLTexture

Current image texture

Inherited from

SceneRenderer.current


input

Optional input: ImageTexture

Input image texture

Inherited from

SceneRenderer.input


loaded

Protected loaded: boolean

Loaded state

Inherited from

SceneRenderer.loaded


padCtx

Protected padCtx: [null | CanvasRenderingContext2D, null | CanvasRenderingContext2D]

Drawing context of padding canvases

Inherited from

SceneRenderer.padCtx


plugins

Protected plugins: Plugin<ResultT>[]

Attached plugins

Inherited from

SceneRenderer.plugins


renderer

Protected renderer: Engine

Rendering engine


scene

Optional scene: Scene

Renderer scene

Inherited from

SceneRenderer.scene


setupPadding

Protected setupPadding: () => void

Type declaration

▸ (): void

Setup padding canvases

Callback sets up size of padding canvases.

Returns

void

Inherited from

SceneRenderer.setupPadding


shader

Protected Optional shader: ShaderProgram

Rendering shader

Inherited from

SceneRenderer.shader


shaderCtx

shaderCtx: null | WebGL2RenderingContext

Context of the video canvas layer

Inherited from

SceneRenderer.shaderCtx


videoRatio

Protected videoRatio: number

Aspect ratio of input video

Inherited from

SceneRenderer.videoRatio


videoSize

Protected videoSize: Size

Resolution of input video

Inherited from

SceneRenderer.videoSize

Methods

addListener

addListener<E>(event, listener): BabylonRenderer<ResultT>

Adds the listener function to the end of the listeners array

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event
listenerRendererEvents[E]The callback function

Returns

BabylonRenderer<ResultT>

This EventEmitter

Inherited from

SceneRenderer.addListener


addPlugin

addPlugin(plugin): Promise<void>

Add render plugin

Initializes the plugin if it's not loaded yet but renderer is ready. Renderer takes ownership of the plugin instance meaning it will release it when plugin is detached or renderer is disposed itself.

Parameters

NameType
pluginPlugin<ResultT>

Returns

Promise<void>

Inherited from

SceneRenderer.addPlugin


dispose

dispose(): void

Dispose renderer object

Extended to dispose scene and engine.

Returns

void

Overrides

SceneRenderer.dispose


emit

emit<E>(event, ...args): boolean

Synchronously calls each of the listeners registered for the event

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event
...argsArgs<RendererEvents[E]>Arguments passed to the listeners

Returns

boolean

True if the event had listeners, False otherwise

Inherited from

SceneRenderer.emit


eventNames

eventNames(): (string | symbol)[]

List of emitter's events

Returns

(string | symbol)[]

List of emitter's events

Inherited from

SceneRenderer.eventNames


getMaxListeners

getMaxListeners(): number

Maximum number of listeners per event

Returns

number

Maximum number of listeners per event

Inherited from

SceneRenderer.getMaxListeners


listenerCount

listenerCount<E>(event): number

The number of listeners listening to the event

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event

Returns

number

Number of listeners

Inherited from

SceneRenderer.listenerCount


listeners

listeners<E>(event): Function[]

Copy of the array of listeners for the event

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event

Returns

Function[]

Copy of the listeners array

Inherited from

SceneRenderer.listeners


load

load(): Promise<void>

Initialize renderer

Initializes rendering context, shader program and buffers.

Returns

Promise<void>

Promise resolving when initialization is finished

Inherited from

SceneRenderer.load


off

off<E>(event, listener): BabylonRenderer<ResultT>

Removes the listener from the listener array for the event

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event
listenerRendererEvents[E]The callback function

Returns

BabylonRenderer<ResultT>

This EventEmitter

Inherited from

SceneRenderer.off


on

on<E>(event, listener): BabylonRenderer<ResultT>

Adds the listener function to the event

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event
listenerRendererEvents[E]The callback function

Returns

BabylonRenderer<ResultT>

This EventEmitter

Inherited from

SceneRenderer.on


once

once<E>(event, listener): BabylonRenderer<ResultT>

Adds a one-time listener function for the event

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event
listenerRendererEvents[E]The callback function

Returns

BabylonRenderer<ResultT>

This EventEmitter

Inherited from

SceneRenderer.once


prependListener

prependListener<E>(event, listener): BabylonRenderer<ResultT>

Adds the listener function to the beginning of the listeners array

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event
listenerRendererEvents[E]The callback function

Returns

BabylonRenderer<ResultT>

This EventEmitter

Inherited from

SceneRenderer.prependListener


prependOnceListener

prependOnceListener<E>(event, listener): BabylonRenderer<ResultT>

Adds a one-time listener function to the beginning of the listeners array

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event
listenerRendererEvents[E]The callback function

Returns

BabylonRenderer<ResultT>

Inherited from

SceneRenderer.prependOnceListener


rawListeners

rawListeners<E>(event): Function[]

Copy of the array of listeners for the event including wrappers

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event

Returns

Function[]

Copy of the listeners array

Inherited from

SceneRenderer.rawListeners


removeAllListeners

removeAllListeners<E>(event?): BabylonRenderer<ResultT>

Removes all listeners, or those of the specified event

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
event?EThe name of the event

Returns

BabylonRenderer<ResultT>

This EventEmitter

Inherited from

SceneRenderer.removeAllListeners


removeAllPlugins

removeAllPlugins(): void

Remove all render plugins

Renderer will dispose all plugins before detaching them.

Returns

void

Inherited from

SceneRenderer.removeAllPlugins


removeListener

removeListener<E>(event, listener): BabylonRenderer<ResultT>

Removes the specified listener from the listener array

Type parameters

NameType
Eextends keyof RendererEvents

Parameters

NameTypeDescription
eventEThe name of the event
listenerRendererEvents[E]The callback function

Returns

BabylonRenderer<ResultT>

This EventEmitter

Inherited from

SceneRenderer.removeListener


removePlugin

removePlugin(plugin): void

Remove render plugin

Renderer will dispose the plugin before detaching it.

Parameters

NameType
pluginPlugin<ResultT>

Returns

void

Inherited from

SceneRenderer.removePlugin


setMaxListeners

setMaxListeners(n): BabylonRenderer<ResultT>

Sets maximum number of listeners per event

Parameters

NameTypeDescription
nnumberMaximum number of listeners

Returns

BabylonRenderer<ResultT>

This EventEmitter

Inherited from

SceneRenderer.setMaxListeners


setMirror

setMirror(mirror): void

Set mirror mode

CanvasRenderer sets mirror mode of ResponsiveCanvas.

Parameters

NameTypeDescription
mirrorbooleanMirror the output

Returns

void

Inherited from

SceneRenderer.setMirror


setMode

setMode(mode): void

Set fitting mode

CanvasRenderer sets fitting mode of ResponsiveCanvas.

Parameters

NameTypeDescription
modeCanvasModeFitting mode

Returns

void

Inherited from

SceneRenderer.setMode


setupCamera

setupCamera(ratio, angle): void

Set camera parameters

Setups BabylonRenderer#camera instance according to parameters provided by @geenee/armature!Processor.

Parameters

NameTypeDescription
rationumberAspect ration of input video
anglenumberVertical field of view in radians

Returns

void

Overrides

SceneRenderer.setupCamera


setupVideo

setupVideo(size, ratio?): void

Set video parameters

Callback sets up size of video canvas layer, resizes texture and allocates new storage.

Parameters

NameTypeDescription
sizeSizeResolution of input video
ratio?numberAspect ration of input video

Returns

void

Inherited from

SceneRenderer.setupVideo


unload

unload(): void

Reset renderer

Releases all resources and instances created in load(). Releases rendering context, shader program and buffers.

Returns

void

Inherited from

SceneRenderer.unload


update

update(result, stream): Promise<void>

Update the scene

Renderers input video frame on corresponding canvas layer.

Parameters

NameTypeDescription
resultResultTResults of video processing
streamHTMLCanvasElementCaptured video frame

Returns

Promise<void>

Promise resolving when update is finished

Inherited from

SceneRenderer.update


updatePads

Protected updatePads(stream): void

Update padding canvases

Updates padding canvases using portions of video frame.

Parameters

NameTypeDescription
streamHTMLCanvasElementCaptured video frame

Returns

void

Inherited from

SceneRenderer.updatePads


updatePlugins

Protected updatePlugins(result, stream): Promise<void>

Update attached plugins

Calls update() of all attached plugins.

Parameters

NameTypeDescription
resultResultTResults of video processing
streamHTMLCanvasElementCaptured video frame

Returns

Promise<void>

Promise resolving when update is finished

Inherited from

SceneRenderer.updatePlugins


updateScene

Protected updateScene(): void

Update and render the scene

Virtual method updating and rendering 3D scene. For babylon.js engine calls this.scene.render().

Returns

void

Overrides

SceneRenderer.updateScene


updateVideo

Protected updateVideo(stream): void

Update the video layer

Calls rendering shaders with current input texture.

Parameters

NameTypeDescription
streamHTMLCanvasElementCaptured video frame

Returns

void

Inherited from

SceneRenderer.updateVideo