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Light nodes make the appearance of geometry visible and viewable in a scene.
Lights illuminate geometry in a scene relative to the user's view.
Lighting nodes include
DirectionalLight,
PointLight,
SpotLight,
and the active
NavigationInfo
headlight (which points along the user's viewing direction).
Environmental effects include
Background,
TextureBackground,
Fog
and
LocalFog.
Each set of light nodes, NavigationInfo nodes, background nodes and fog nodes are bound on a separate binding stack,
meaning that only one of each can be active at a time.
The supporting
Chapter 11 slideset
and course videos
(NPS,
YouTube)
for X3D for Web Authors are available online via
X3dGraphics.com.
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![[1] BackgroundColorsOnly.x3d Background colors view](_viewpoints/BackgroundColorsOnly.x3d._VP_Background_colors_view.png "[1] BackgroundColorsOnly.x3d Background colors view")
