ShowMagic AV, User Manual, Page: 95 / 233

Example 1: Creating a Semi-Circle
1) Select only the
Shape FX
Circle
preset and drag the
centre handle down and to the right to make the circle
full-size. The limiter box can be used to crop shapes of
any size, but use a full-size circle to best illustrate the
effect.
2) Drag the bottom handle halfway to the left so that the
right edge of the limiter box lines up roughly with the
dotted vertical (tilt) line.
Now when you run that FX scene the fixtures will try to trace a
circle but will be restricted to the right edge of the limiter box,
and so will trace a semi-circle instead.
The range limiter box for
a semi-circle
The range limiter box for
a quarter-circle
Example 2: Creating a Quarter-Circle
Drag the bottom handle halfway up so that the bottom edge of
the limiter box now also lines up with the dotted horizontal
(pan) line.
When you run that FX scene the fixtures will try to trace the
circle but will be restricted to the right and bottom edges of
the limiter box, and so will trace the shape of a quarter circle
instead.
Example 3: Creating a Square
Use the circle as above, but drag the top and bottom handles so
that the edges of the limiter box fall inside the circle .
When you run that FX scene the fixtures will try to trace the
circle but will be restricted to all four edges of the limiter box,
and so will trace the shape of a square instead.
The range limiter box for a
square
Section 7 - Lighting Scene Panel
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