ViewFlags Class

Flags controlling how graphics appear within a view. A ViewFlags object is immutable. There are several ways to produce a modified copy of a ViewFlags object:

 // Start with the default values for all properties.
 let vf = ViewFlags.defaults;
 // Change a single boolean property:
 vf = vf.with("visibleEdges", true);
 // Change only the render mode:
 vf = vf.withRenderMode(RenderMode.HiddenLine);
 // Change multiple properties:
 vf = vf.copy({ renderMode: RenderMode.SmoothShade, visibleEdges: true });
 // Reset multiple properties to their default values:
 vf = vf.copy({ renderMode: undefined, visibleEdges: undefined });

with and withRenderMode should be preferred if you only need to change a single property, as they will not create a new object unless the new value differs from the current value. copy and override should be preferred if you need to change multiple properties, as they will create no more than one new object, vs each call to with or withRenderMode potentially creating a new object.

@see viewFlags to define the view flags for a DisplayStyle.

Methods

Name Description
constructor(flags?: Partial<Mutable<NonFunctionPropertiesOf<ViewFlags>>>): ViewFlags Create a new ViewFlags.  
copy(changedFlags: Partial<Mutable<NonFunctionPropertiesOf<ViewFlags>>>): ViewFlags Produce a copy of these ViewFlags with some modified properties.  
edgesRequired(): boolean Returns true if the edges of surfaces should be displayed, based on RenderMode and the visibleEdges flag.  
equals(other: Readonly<Mutable<NonFunctionPropertiesOf<ViewFlags>>>): boolean Returns true if this and other are equivalent.  
hiddenEdgesVisible(): boolean Returns true if edges that could be occluded by other geometry are visible for the current RenderMode.  
override(overrides: Partial<Mutable<NonFunctionPropertiesOf<ViewFlags>>>): ViewFlags Produce a copy of these ViewFlags, overriding some of its properties.  
toFullyDefinedJSON(): Required<ViewFlagProps> Like toJSON, but no properties are omitted.  
toJSON(): ViewFlagProps Convert to JSON representation.  
with(flag: "fill" | "transparency" | "dimensions" | "patterns" | "weights" | "styles" | "textures" | "materials" | "acsTriad" | "grid" | "visibleEdges" | "hiddenEdges" | "shadows" | "clipVolume" | "constructions" | "monochrome" | "backgroundMap" | "ambientOcclusion" | "thematicDisplay" | "wiremesh" | "forceSurfaceDiscard" | "whiteOnWhiteReversal" | "lighting", value: boolean): ViewFlags Produce a copy of these ViewFlags with a single boolean property changed.  
withRenderMode(renderMode: RenderMode): ViewFlags Produce a copy of these ViewFlags with a different renderMode.  
create(flags?: Partial<Mutable<NonFunctionPropertiesOf<ViewFlags>>>): ViewFlags Static Create a ViewFlags.  
fromJSON(json?: ViewFlagProps): ViewFlags Static Create a ViewFlags from its JSON representation.  

Properties

Name Type Description
acsTriad Readonly boolean Whether to display a graphical representation of the view's AuxCoordSystem.  
ambientOcclusion Readonly boolean In SmoothShade, whether to apply AmbientOcclusion.  
backgroundMap Readonly boolean Whether to display background map imagery.  
clipVolume Readonly boolean Whether to apply the view's clip volume to the geometry in the scene.  
constructions Readonly boolean Whether to display geometry of class Construction.  
defaults Static Readonly ViewFlags A ViewFlags object with all properties initialized to their default values.  
dimensions Readonly boolean Whether to display geometry of class Dimension.  
fill Readonly boolean In Wireframe only, whether to display the interiors of planar regions with FillFlags.ByView.  
forceSurfaceDiscard Readonly boolean Controls whether surface discard is always applied regardless of other ViewFlags.  
grid Readonly boolean Whether to display a grid.  
hiddenEdges Readonly boolean In any mode except Wireframe, whether to display the edges of surfaces occluded by other geometry.  
lighting Readonly boolean In SmoothShade, whether to apply lighting to surfaces.  
materials Readonly boolean In SmoothShade, whether to apply RenderMaterials to surfaces.  
monochrome Readonly boolean Whether to produce a monochrome image.  
patterns Readonly boolean Whether to display geometry of class Pattern.  
renderMode Readonly RenderMode The basic rendering mode applied to the view.  
shadows Readonly boolean In SmoothShade, whether to display solar shadows.  
styles Readonly boolean Whether LinePixels are allowed to apply patterns to lines and edges.  
textures Readonly boolean In SmoothShade, whether to apply RenderTextures to surfaces.  
thematicDisplay Readonly boolean Whether to apply ThematicDisplay.  
transparency Readonly boolean Whether element transparency is applied.  
visibleEdges Readonly boolean In SmoothShade, whether to display the edges of surfaces.  
weights Readonly boolean Whether to allow lines and edges to draw with width greater than one pixel.  
whiteOnWhiteReversal Readonly boolean Whether to apply white-on-white reversal.  
wiremesh Readonly boolean If true, overlay surfaces with wiremesh to reveal their triangulation.  

Defined in

Last Updated: 15 May, 2024