High End Systems DL.3, Руководство пользователя

Страница: 168 / 394

CHAPTER 12
Global Functions: Collage Generator™ Effect
142 DL.3 Digital Light User Manual
Setting up Variable Edge Blending:
1. Select one of the collage modes available in the Global Effects
2. Using the collage modifiers, select the collage size for your application, and assign each unit
it's place in the collage
3. Set the Viewpoint Mode channel to a value of 128. This will activate the Variable Edge
Blending
4. Using the Viewpoint Position X and Y modifiers, adjust the blend region width to the desired
value. All units in the collage must have the same X and Y values or the collage will not
align properly.
5. Align the collage using the keystone parameters, (see Keystone Correction Parameters on
page 129).
Mapping a Collage to a Spherical Surface
The Spherical Mapping effect takes the normal rectangular output and wraps it on a selected
portion of a sphere. This is the same as wrapping a flat map on to a globe. The horizontal
position of a point is its longitude. The vertical position of a point is its latitude. For a detailed
description of this effect, see Spherical Mapping on page 231.
Adjusting the Spherical Mapping effect requires a total of nine modifier parameters. Selecting
Spherical Mapping along with a Collage Generator effect uses the available Global Effects. In
addition to the three Global Effects Modifier parameters associated with the Spherical Mapping
selection, six modifier parameters are accessed by setting any Global or Graphic Effect Mode
parameters to a DMX value of 253 or 254. Any available effect mode from any Graphic Object
can be used. The Effects Mode parameters used do not have to be from the same Graphic
Object. One of these parameters enables the Effects Mode Modifiers to control the vertical
position of the projector (actually the graphics viewpoint), the vertical position of the sphere and
a vertical size. The other Effect Mode selection provides Modifier parameters to control the
amount of vertical bend in horizontal lines, the vertical center of the added bend, and horizontal
size.
Spherical Mapping Setup Guide
Before You Begin
Successful spherical mapping requires careful positioning of the DL.3, DL.2 units or Axon-
controlled projectors you are using. Units should be mounted at equal angles from each other
and the same distance from the sphere. Mounting units at the same height will minimize the tilt
angle adjustments you will need to make.