An image may be selected that will be rendered as the background to your scene.
You may disable the background image from being rendered by de-selecting
on the Main Toolbar.
Color
You may alternatively select a background color to be rendered as the background to
your scene.
You may disable fog (atmosphere) from being rendered by de-selecting
on the Main Toolbar.
Mode
You may select the mode in which fog will be rendered. The general options are Linear,
Exponential and Exponential Squared. If you are a 3D
Canvas Pro user and are rendering with POVRay you can also choose to disable standard
fog and only render atmospheric effects created by particles (See below).
Color
The color of the fog may be selected by clicking on the current color.
Raytracing Particles (Available with
3D Canvas Pro when using raytraced rendering)
This simulates the effect of light reflecting off of particles in the air. It is useful
for producing "visible light" such as Spotlights in fog.
Note that there are a few tricks to getting a good effect with this in POVRay:
- To enable "visible light" it is necessary to enable Render Atmosphere
on the primary toolbar.
- You will need at least one spotlight in your scene or you will not see any "visible
light".
- "Visible light" is only visible if there is something behind the "visible
light". This is easy for any scene that takes place in the interior of a room. But if
you want to have "visible light" in "space" you will need to create a
giant sphere and place your spotlight and camera inside it. This appears to be a bug in
the current version of POVRay. It may be repaired in the future.
- You may need to add additional lighting to your scene since "atmosphere" acts
like fog reducing the amount of light in a scene.
- Making the Atmosphere's Linear: Max. (see below) large helps make the
scene brighter.
- All point lights and parallel point lights in your scene must be set to NOT
cast a shadow. You can do this by right clicking on the lights and de-selecting Cast
Shadow. This appears to be a bug in the current version of POVRay. It may be
repaired in the future.
Color
The color of the particles. Black disables raytracing particles.
Scatter Freq.
The portion of the light that is scattered by the particles rather than being absorbed.
A larger value will result in more visible light.
Linear
The start and maximum distance for linear rendered fog.
Density
The density of exponential rendered fog.