PRG Mbox Designer Manual 3.8 - Manual (Page 102)

94 MBOX ® MEDIA SERVER USER MANUAL
Fog
The Camera fixture also includes control for the Fog effect. Like Decay, it works on the composite picture created by
all five layers. However, fog only has an effect on 3D objects (or digital gobos) if they have been lit. The objects can be
lit by the Ambient fixture, any of the four Spot fixtures, or by having their Drawmode set to one of the modes that
includes lighting. The Fog effect causes objects that are further from the camera to be dimmer (harder to see) than
objects that are closer to the camera.
In the example below, there are three objects all at different distances from the camera (their Z-Position has been
modified). The teapot is closest, followed by the cube, and then the sphere. Since they all use the same lighting
created by the four spot fixtures, and they have been scaled and arranged so that they all appear to be roughly the
same size, they look as if they are all the same distance from the camera:
In the image below, the Fog effect has been turned on. Now the differences in the Z-position (distance from the
camera) can be seen. The object furthest from the camera is darkest.