Keywords: Blue, Csound

JMask
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### JMask

Accepts NoteProcessors: yes

JMask is GUI score generating soundObject based on Andre Bartetzki's CMask . JMask currently supports all features of CMask except field precision, though support for this feature is planned. Users of JMask are encouraged to read the CMask manual available at Andre Bartetzki's site to get familiar with CMask concepts as they are represented 1:1 in JMask.

JMask builds on top of CMask's concepts and feature set by providing the user a graphical way to edit parameter values, tables, masks, etc. Also, by using JMask, the user's projects are guaranteed to run on all Blue installations, while using CMask from Blue requires anyone opening and using the project to have CMask installed on their system.

The following documentation for JMask will assume the user is familiar with CMask and that the user has read through the CMask manual available from the link above. The following will discuss how to use JMask, covering how the CMask features are implemented in JMask and how to work with the user interface. Over time, this manual entry for JMask will attempt to grow to be self sufficient and not require knowledge of CMask, but for now familiarity with CMask is suggested.

#### Overview

A single JMask object is equivalent to one CMask field. A single JMask object holds a collection of Parameters, one for each pfield to be generated in the score. Each of the Parameter types in CMask is available in JMask:

Table 3.1. Parameter Types

Type | Description
--- | ---
Constant | Generate the given value when generating values for notes
Item List | Generates values from a list of values given by the user. Options for generation include cycling through the list (cycle), going backwards and forwards through the list (swing), going through the list in random order using all values once before repeating (heap), and choosing a random list item (random).
Segment | Generates values along a user-defined line.
Random | Generates a random value.
Probability | Generates a randomized value that is weighted by the given probability type and the configuration of the parameters of that probability type.
Oscillator | Generates values that oscillate in a given period using different user-chosen shapes.

Beyond the Parameters, JMask supports the three modifier types found in CMask: Masks, Quantizers, and Accumulators. Certain parameters support different modifiers, and their support by paramater type is listed below:

Table 3.2. Parameter Modifier Support

Type | Supports Mask | Supports Quantizer | Supports Accumulator
--- | --- | --- | ---
Constant | No | No | Yes
List | No | No | Yes
Segment | No | Yes | Yes
Random | No | Yes | Yes
Probability | Yes | Yes | Yes
Oscillator | Yes | Yes | Yes

JMask also supports the use of a seed value. When enabling the use of seeding, the seed value will be used to initialize the pseudo-random number generator used in randomized operations. This allows the user to set a seed and get consistently reproducible results. The default is to use the system time to seed the random number generator, thus giving different results each render.

#### Using the JMask Interface

The JMask SoundObject Editor allows for viewing the editors for all of the assigned parameters. Parameters are each set to generate values for one pfield. On the top side of each row is the Parameter Edit Panel. This panel shows a number at the top that corresponds to what pfield this parameter will generate values for, as well as the field name. To change things about the Parameter, right-click the panel to show a popup menu as shown in the image above. The options are described below:

Parameter Edit Options

Add Parameter Before

  Create a new Parameter and insert it before the Parameter clicked on by mouse. When this option is selected, a dialog will appear with a dropdown of options of what type of Parameter to add.

Add Parameter After

  Create a new Parameter and insert it after the Parameter clicked on by mouse. When this option is selected, a dialog will appear with a dropdown of options of what type of Parameter to add.

Remove Parameter

  Remove this Parameter. Will not be allowed if trying to edit parameters 1-3 as JMask requires a minimum of 3 pfields.

Change Parameter Type

  Choose a different type of Parameter and replace the current one with the selected one. Any edits from the old Parameter will be lost once a new parameter type is chosen.

Push Up

  Move the selected Parameter to before the previous Parameter. Example: Push up parameter at pfield 5 to pfield 4, moving what was previously at 4 to 5.

Push Down

  Move the selected Parameter to after the next Parameter. Example: Push down parameter at pfield 4 to pfield 5, moving what was previously at 5 to 4.

Mask

  Enable/disable using a Mask with this parameter. If enabled, the Mask editor will appear, and if disabled, the Mask editor will disappear. This menu option will not show for those Parameters that do not support Masks.

Quantizer

  Enable/disable using a Quantizer with this parameter. If enabled, the Quantizer editor will appear, and if disabled, the Quantizer editor will disappear. This menu option will not show for those Parameters that do not support Quantizers.

Accumulator

  Enable/disable using an Accumulator with this parameter. If enabled, the Accumulator editor will appear, and if disabled, the Accumulator editor will disappear. This menu option will not show for those Parameters which do not support Accumulators.

Beyond the basics of moving around Parameters, adding new ones, and choosing whether to enable Masks, Quantizeres, and Accumulators, one can also choose to show/hide Parameters by using the popup menu that appears when choosing the down arrow button in the JMask title bar, as shown in the screenshot below.

To edit the field name, double click the Parameter Edit Panel. A dialog will appear where you can modify the field name, as shown below:

Beyond these basics for working with the Parameters in general, each Parameter type has its own editor, each customized for the values and options allowable for each Parameter. Currently, documentation is omitted for each Parameter's GUI as they correspond in feature and parameters as CMask, and the user is encouraged to consult the CMask manual for more information on editing each Parameter.

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