High End Systems DL.2 User Manual

CHAPTER 12 

Global Functions: Collage Generator™ Effect

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DL.2 Digital Light User Manual

11. Use Modifier 3 to adjust the vertical size of the output, stretching and compressing it to 

adjust for the size of the sphere, keeping the vertical size of the grid filling the output 
without clipping the image.

12. On the Graphic Effect Mode channel set to Spherical Control 2 (DMX = 254), use the 

associated Modifier 3 to compress the grid edges adjusting the bend in horizontal grid 
lines. This adjustment should not be used to fill the projector output horizontally. Instead, it 
should be used in conjunction with the Spherical Mapping Global Effect Modifier 1 to control 
the longitude angle of the projected image. Global Effect Modifier 1 should be maintained 
close to the theoretical longitude angle.

13. Use Modifier 1 and Modifier 2 to adjust the amount of bend, up or down, in the horizontal 

lines of the grid. Modifier 1 controls amount of correction. Modifier 2 controls where the 
center of correction occurs. 

14. If the spherical mapping effect is being used in conjunction with the Collage Generator 

effect, select the Enhanced Collage Generator option (DMX = 141) in the other Global 
Effect channel now. Set the appropriate grid size and grid elements selected with the 
internal collage alignment grid enabled. Go back through steps 1 through 11. Remember 
that pan and tilt adjustments are also available when using the DL.2 fixture.

Now you have a rough adjustment of the spherical mapping effect. From this point, finely adjust 
all the parameters until you bring the output to the desired shape. 

When fine tuning Spherical Mapping adjustments, remember the following:

• The Graphic Object effect 253 Modifiers 1 and 2 have a major influence on the shape of the 

vertical lines. 

• The Spherical Mapping Global Effect modifiers can be used to provide fine control of the shape 

of the vertical lines, but should be within several degrees of the expected latitude and 
longitude values. 

• The Graphic Object effect 253 Modifiers 1 and 2 are used to finely adjust the vertical bend in 

horizontal lines.

• If the fixtures are arranged symmetrically around the sphere, the adjustment made to the 

various control Modifiers of Global and Graphic Spherical Mapping effects with be the same or 
nearly the same when the fine tuning is complete. You can save time by selecting the Modifier 
on all the fixtures you are using for the collage and making each adjustment on all the 
fixtures together.

• Projector Pan, Tilt, and Zoom also affect alignment.

• Don’t make small changes until the alignment is roughed in.

• When alignment doesn’t seem to be working, record and store you current settings, then go 

back to the default values and begin again.

• The longitude angle is the angle between fixtures from the vertical axis of the sphere and 

should be defined in your lighting plot. The plot should also give you a good idea of the 
latitude angle. The final values and those theoretical values should be close.