API Reference › core-frontend › Rendering › SceneContext

SceneContext Class

Context used to create the scene to be drawn in a Viewport. The scene consists of a set of RenderGraphics produced by the TileTrees visible within the viewport. Creating the scene may result in the enqueueing of requests for Tile content which should be displayed in the viewport but are not yet loaded.

Extends

Methods

Name Description
constructor(vp: Viewport, frustum?: Frustum): SceneContext    
insertMissingTile(tile: Tile): void Indicate that the specified tile is desired for the scene but is not yet ready.  
outputGraphic(graphic: RenderGraphic): void Add the specified graphic to the scene.  

Inherited methods

Name Inherited from Description
createBranch(branch: GraphicBranch, location: Transform): RenderGraphic RenderContext Create a RenderGraphic which groups a set of graphics into a node in a scene graph, applying to each a transform and optional clip volume and symbology overrides.
createGraphicBranch(branch: GraphicBranch, location: Transform, opts?: GraphicBranchOptions): RenderGraphic RenderContext Create a graphic from a GraphicBranch.
createSceneGraphicBuilder(transform?: Transform): GraphicBuilder RenderContext Create a builder for creating a GraphicType.Scene RenderGraphic for rendering within this context's Viewport.
getPixelSizeAtPoint(inPoint?: Point3d): number RenderContext Given a point in world coordinates, determine approximately how many pixels it occupies on screen based on this context's frustum.

Properties

Name Type Description
backgroundGraphics Accessor ReadOnly RenderGraphic[] The graphics that will be drawn behind everything else in the scene.  
graphics Accessor ReadOnly RenderGraphic[] The graphics in the scene that will be drawn with depth.  
overlayGraphics Accessor ReadOnly RenderGraphic[] The graphics that will be drawn in front of everything else in the scene.  
scene Readonly Scene The graphics comprising the scene.  
viewingSpace Accessor ReadOnly ViewingSpace The viewed volume containing the scene.  

Inherited properties

Name Type Inherited from Description
frustum Readonly Frustum RenderContext Frustum extracted from the context's Viewport.
frustumPlanes Readonly FrustumPlanes RenderContext Frustum planes extracted from the context's Viewport.
renderSystem Accessor ReadOnly RenderSystem RenderContext The RenderSystem being used to produce graphics for this context.
viewFlags Readonly ViewFlags RenderContext ViewFlags extracted from the context's Viewport.
viewport Accessor ReadOnly Viewport RenderContext The Viewport associated with this context.

Defined in

Last Updated: 20 April, 2024