urn Reference

Generate random numbers without duplicates

urn

Description

Outputs random numbers and keeps track of each number that has been generated. When all numbers up to the maximum (set via an argument or the right inlet) have been output, a bang is send out the right outlet.

Examples

Choose random numbers without repeating a choice

Arguments

limit [int]

Optional

The number of possible values for the random number generator. If no argument is typed in, there will be only 1 possible number. The maximum limit is 4096.

seed [int]

Optional

A second argument is used to set a "seed" value for the random generator. If no argument is specified, the time value will be used to initialize the seed.

Attributes

Common Box Attributes

annotation [symbol]

Sets the text that will be displayed in the Clue window when the user moves the mouse over the object.

background [int] (default: 0)

Adds or removes the object from the patcher's background layer. background 1 adds the object to the background layer, background 0 removes it. Objects in the background layer are shown behind all objects in the default foreground layer.

color [4 floats]

Sets the color for the object box outline.

fontface [int]

Sets the type style used by the object. The options are:

plain
bold
italic
bold italic

Possible values:

0 = 'regular'
1 = 'bold'
2 = 'italic'
3 = 'bold italic'

fontname [symbol]

Sets the object's font.

fontsize [float]

Sets the object's font size (in points).

Possible values:

'8'
'9'
'10'
'11'
'12'
'13'
'14'
'16'
'18'
'20'
'24'
'30'
'36'
'48'
'64'
'72'

hidden [int] (default: 0)

Toggles whether an object is hidden when the patcher is locked.

hint [symbol]

Sets the text that will be displayed in as a pop-up hint when the user moves the mouse over the object in a locked patcher.

ignoreclick [int] (default: 0)

Toggles whether an object ignores mouse clicks in a locked patcher.

jspainterfile [symbol]

JS Painter File

patching_rect [4 floats] (default: 0. 0. 100. 0.)

Sets the position and size of the object in the patcher window.

position [2 floats]

g/s(set)

Sets the object's x and y position in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its size unchanged.

presentation [int] (default: 0)

Sets whether an object belongs to the patcher's presentation.

presentation_rect [4 floats] (default: 0. 0. 0. 0.)

Sets the x and y position and width and height of the object in the patcher's presentation, leaving its patching position unchanged.

rect [4 floats]

g/s(set)

Sets the x and y position and width and height of the object in both patching and presentation modes (if the object belongs to its patcher's presentation).

size [2 floats]

g/s(set)

Sets the object's width and height in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its position unchanged.

textcolor [4 floats]

Sets the color for the object's text in RGBA format.

textjustification [int]

Sets the justification for the object's text.

Possible values:

0 = 'left'
1 = 'center'
2 = 'right'

varname [symbol]

Sets the patcher's scripting name, which can be used to address the object by name in pattr, scripting messages to thispatcher, and the js object.

Messages

bang

In left inlet: Sends out a previously unchosen random number from 0 to one less than the specified maximum limit.

int

Arguments

limit [int]
In right inlet: Clears the list of already chosen numbers, and specifies the number of possible values for the random number generator. The random numbers will range from 0 to one less than this maximum limit. The maximum limit is 4096.

  (inlet1)

Arguments

limit [int]
Clears the list of already chosen numbers, and specifies the number of possible values for the random number generator. The random numbers will range from 0 to one less than this maximum limit. The maximum limit is 4096.

clear

In left inlet: Clears the list of already chosen numbers.

seed

Arguments

seed [int]
In left inlet: The word seed, followed by a number, provides a "seed" value for the random generator, which causes a specific (reproducible) sequence of pseudo-random numbers to occur. The number 0 uses the time elapsed since system startup (an unpredictable value) as the seed, ensuring an unpredictable sequence of numbers. This unpredictable seed is used by default when the urn object is created. However, once all numbers have been chosen, the sequence will repeat. Therefore, in order to achieve a non-repeating sequence of numbers, you will need to send the urn object the seed 0 message each time you send it the clear message.

Output

bang

Out right outlet: When all numbers in the current range have been generated, urn sends a bang out the right outlet instead of a number out the left outlet.

int

Out left outlet: If there are numbers within the current range that have not been sent out since the last clear message was received, urn generates a random number between 0 and one less than the maximum.

See Also

Name Description
decide Choose randomly between 1 and 0
deferlow Defer the execution of a message (always)
drunk Output random numbers within a step range
random Generate a random number