Types of Light Sources |
  
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Types of Light Sources |
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There are three types of light sources - point, directional and projector.
Point light source emits the light from one point in all directions over the whole 3D scene.
It has no certain direction of light. Therefore, in order to create a point light source, you should specify only its position.
Diagram of light propagation from a point source
Directional light source emits the light in a certain direction over the whole 3D scene.
Therefore, in order to create a directional light source, you should specify its position and direction of light.
Diagram of light propagation from directional source
Spot light source emits a light cone from a given point in a certain direction with the specified drop-off rate.
Therefore, in order to create a spot light source, you should specify its position, direction of light and beam angle.
Diagram of propagation of light from projector
The documents with sample constructions of all types of light sources can be found in the Examples library located in the folder: Additional resources/Light Sources.