6. Selecting and Modifying Fixture Parameters 159
6.3.3 Continuous Parameters: Colour and Beam
Colour and beam parameters can be either discrete (known as ‘slotted’) or continuous. An
example of a slotted parameter is the gobo and colour wheels in a moving light, which can be
assigned to values such as Gobo 1 and Colour 3. Examples of continuous parameters are the
colour mixing controls on some moving lights, irises, and variable-speed strobes; these can
be assigned to a percentage or real-world value. It is sometimes useful to treat slotted
parameters as continuous; for example, you might want to assign a gobo or colour wheel part
way between two positions to achieve a particular effect. Hog 4 OS allows you to treat such
parameters as either slotted or continuous when assigning values to them.
To control continuous colour and beam parameters:
1. Press the appropriate parameter type key : Colour or Beam or any user kind key that
contains colour and beam functions. The Wheels Toolbar shows the available
parameters and their current value.
2. If the selected fixture has more parameters of the selected type than there are wheels,
the Wheelsets Toolbar will open. Page through the available parameters by pressing
the parameter type key again, or select a button on the toolbar.
3. Adjust the parameter value using the parameter wheels.
The Wheels Toolbar for the Beam Parameters of a Studio Spot 575
The Wheelsets Toolbar for a Studio Spot 575
Some parameters that appear on the parameter wheels have more than one mode. These
modes are shown as a list on the Wheels Toolbar, and you can select the modes by clicking
on the wheel's button on the toolbar.
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