API Reference > imodeljs-frontend > Rendering > GraphicType

GraphicType Enumeration

Describes the type of a GraphicBuilder, which defines the coordinate system in which the builder's geometry is defined and controls the behavior of the RenderGraphic produced by the builder.

note For those types for which depth-testing is disabled, the order in which the individual geometric primitives are drawn determines which geometry draws on top of other geometry.

  • Within a GraphicList, each RenderGraphic is rendered in the order in which it appears in the list; and
  • Within a single RenderGraphic, each geometric primitive is rendered in the ordered in which it was added to the GraphicBuilder.

Members

Name Value Description
ViewBackground 0 Renders behind all other graphics. For example, the border of a SheetViewState is of this type.
Coordinates: CoordSystem.View.
RenderMode: SmoothShade.
Lighting: none.
Depth-testing: disabled.

see Decorations.viewBackground
Scene 1 Renders as if it were part of the scene. All of the ViewFlags applied to the view's normal geometry also applies to these types of decorations.
Coordinates: CoordSystem.World.
Lighting and RenderMode: from view.
Depth-testing: enabled.

see Decorations.normal.
WorldDecoration 2 Renders within the scene, but ignores the view's ViewFlags.
Coordinates: CoordSystem.World.
Lighting: default.
RenderMode: SmoothShade.
Depth-testing: enabled.

see Decorations.world.
WorldOverlay 3 Renders as an overlay on top of the scene. These decorations differ from GraphicType.WorldDecoration only in that depth-testing is disabled.
For example, the ACS triad and WindowAreaTool decorations are of this type.
Coordinates: CoordSystem.World.
RenderMode: SmoothShade
Lighting: default.
Depth-testing: disabled.
Renders atop the scene. Coordinates: world. RenderMode: smooth. Lighting: none. Z-testing: disabled

note Overlay decorations typically employ some degree of transparency to ensure that they do not fully obscure the scene.

see Decorations.worldOverlay
ViewOverlay 4 Renders as an overlay on top of the scene. These decorations differ from GraphicType.WorldOverlay only in that their geometry is defined in view coordinates rather than world.
Coordinates: CoordSystem.View.
RenderMode: SmoothShade
Lighting: default.
Depth-testing: disabled.

note For more flexibility in defining view overlay decorations, consider using a CanvasDecorationList.

see Decorations.viewOverlay

Defined in

Last Updated: 29 November, 2022