Common light parameters

Name
Allows you to give a specific name to your light source. If no name is specified, PiXELS3D will give a default unique name to every new light source.

Tips & Tricks : It is recomanded to give descriptive names to every object in a scene to avoid names like "extruded234" or "spline28". It takes more time but it makes a lot of things easier like :

- re-opening a scene 6 months later
- cleaning-up unused geometry
- merging sub-scenes into one, etc.

Intensity
The intensity of a light source is defined by two parameters :

- its color (default : white)
- its intensity (default : 1)

The intensity value is used to scale the amount of emitted light. It is easier to access and animate than the color.

Tips & Tricks : Remember that lighting is an additive process. In complexly lit scenes, using too high intensity settings may create over-lighting. Some areas will then look too flat and shadows appear washed out.

Position
This is the position of your light in 3d-space. You can set it by entering numbers in the fields or interactively move it around in your scene using the Control>Move tool.

Interest
Some types of lights are aiming at a particular point in space : itÍs their interest point. It is much easier to use than specifying rotation angles. The interest point is represented in the scene with a Null object linked to the lightÍs position.

Glow
The glow parameters will allow you to simulate glowing visible light sources. The glow effect is defined as follow :

A Inner Core radius in which the intensity is maximum.
A Outer Core radius where glow intensity drops down to zero.
A decay Rate to specify how fast the intensity will drop down from maximum to 0 between the inner and the outer radius.

The default Rate value is 2. A value of 1 gives a linear falloff. The inner and outer core values are specified in world units.

Tips & Tricks : To match real-world behaviour, you should use a rate value of 4 with a larger Outer Core radius.