Class: StrokeRendererGL

Rendering.WebGL.StrokeRendererGL(canvas, optionsopt)

Stroke painter

Constructor

new StrokeRendererGL(canvas, optionsopt)

Parameters:

Name	Type	Attributes	Description
canvas	Rendering.WebGL.InkCanvasGL		view layer
options	Rendering.WebGL.InkLayerOptions	<optional>	Layer configuration. When not available underlying layer is auto created with default size (device screen size).

Properties:

Name	Type	Description
brush	Rendering.WebGL.BrushGL	Rendering brush
color	Common.Color	Rendering color
updatedArea	Common.Rect	Current modified segments area
preliminaryArea	Common.Rect	Last preliminary update area
strokeBounds	Common.Rect	Current stroke area
affectedArea	Common.Rect	Runtime graphics updates area for drawn segments + preliminary area

Since:

• version 1.0

Extends

• Rendering.StrokeRenderer

Methods

abort()

Restarts StrokeRenderer instance lifecycle for next usage

Overrides:

• Rendering.StrokeRenderer#abort

blendStroke(layeropt, dirtyAreaopt, blendModeopt)

Blends completed stroke with another layer

Parameters:

Name	Type	Attributes	Default	Description
layer	Rendering.WebGL.OffscreenLayerGL	<optional>	this.canvas	Target layer for stroke blending
dirtyArea	Common.Rect	<optional>	this.strokeBounds	Blending area
blendMode	Rendering.BlendMode	<optional>	this.blendMode	Blending mode

Overrides:

• Rendering.StrokeRenderer#blendStroke

(async) blendStroke2D(layer, blendOptions)

Blends completed stroke with 2D layer

Parameters:

Name	Type	Description
layer	Rendering.2D.OffscreenLayer2D	Target layer for stroke blending
blendOptions	Rendering.BlendOptions	Blending configuration

blendStrokes(strokes, layer, blendOptions) → Common.Rect

Blends batch of strokes with another layer

Parameters:

Name	Type	Description
strokes	Array.<Stroke>	Strokes to draw
layer	Rendering.2D.OffscreenLayer2D	Target layer for stroke blending
blendOptions	Rendering.BlendOptions	Blending configuration

Returns:

Affected area

Type

Common.Rect

blendUpdatedArea(layeropt)

Blends affected area with another layer

Parameters:

Name	Type	Attributes	Default	Description
layer	Rendering.WebGL.OffscreenLayerGL	<optional>	this.canvas	Target layer for stroke blending, where blendMode is previously configured

Overrides:

• Rendering.StrokeRenderer#blendUpdatedArea

configure(settings)

Configures rendering. First call is used for initialilzation.

Parameters:

Name	Type	Description
settings	Rendering.ComposeStyle	Renderer configuration settings

Overrides:

• Rendering.StrokeRenderer#configure

draw(path, endStrokeopt)

Render data input

Parameters:

Name	Type	Attributes	Default	Description
path	PathBuilding.InkPath|Stroke			input
endStroke	boolean	<optional>	false	applicable only when path is Path, when true caps end of stroke and completes stroke rendering

Overrides:

• Rendering.StrokeRenderer#draw

drawPreliminary(path)

Render preliminary curve

Parameters:

Name	Type	Description
path	PathBuilding.InterpolatedSpline	prediction input

Overrides:

• Rendering.StrokeRenderer#drawPreliminary

(abstract) drawSegment()

Overrides:

• Rendering.StrokeRenderer#drawSegment

(abstract) drawStroke()

Overrides:

• Rendering.StrokeRenderer#drawStroke

requestComposeLayer() → Rendering.OffscreenLayer

When data is composed, raster data could be acquired. This action resets stroke renderer internal state.

Overrides:

• Rendering.StrokeRenderer#requestComposeLayer

Returns:

Composition layer

Type

Rendering.OffscreenLayer

reset()

Reset current state

Overrides:

• Rendering.StrokeRenderer#reset

resize()

Resize underlying layers

Overrides:

• Rendering.StrokeRenderer#resize

setTransform(matrix)

Configures ink transformation over stroke layer and it's preliminary when available

Parameters:

Name	Type	Description
matrix	Common.Matrix

Overrides:

• Rendering.StrokeRenderer#setTransform

toStroke(builder, strokeIDopt) → Stroke

Converts current drawed path to stroke

Parameters:

Name	Type	Attributes	Default	Description
builder	PathBuilding.InkBuilder			builder used for path building
strokeID	string.<GUID>	<optional>	auto generated GUID	Stroke identifier

Overrides:

• Rendering.StrokeRenderer#toStroke

Returns:

stroke

Type

Stroke

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