Lights & Shadows

This section shows how to introduce lights and shadows to your scenes.

Light Sources 

NUBIGON features three types of light sources, which are available through the Main Menu under Create > Lights and as icons on the Toolbar.

Every light source in the scene is treated as a distinct object. You can use manipulators to move and rotate them around.

TIP: After creating a light source, select it, and press the F-key. In the orbit camera mode, this will move the rotation center of the camera to the light source center, making it very convenient to transform light sources using manipulators.

For the light sources to affect your scene, activate the lighting mode by clicking the Lighting icon  on the Viewbar.

If you have disabled the computation of normals when opening point clouds, lighting will not work.

Shadows

Follow the steps below so that a light source casts shadows onto your scene: 

  1. Activate the lighting mode. Otherwise, shadows won’t be computed.
  1. Select a light source to view its parameters in the Object Inspector. Below we show the parameters of a point light source:
  1. Choose Hard shadows or Soft shadows from the Shadow type dropdown menu.
  2. Press Compute shadows in the Lighting Editor to update shadows cast from all visible light sources in the scene.
TIP: NUBIGON save files (*.na) do not record shadow maps. After loading a scene, do not forget to recompute shadows.
Pay attention when using directional light sources. If objects in the scene cover a large spatial area, directional lights can cast low-resolution shadows.

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