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updown~ Reference

Trapezoidal Function Generator With Constant Attack and Release

updown~

Description

The updown~ object is driven by a ramp from 0 - 1 or 1 - 0. It generates a trapezoidal function where the attack and release times are independent of the speed of the input ramp, unlike trapezoid~ where start and end times are specified as a proportion of the total input ramp cycle and thus will vary with the speed of the input ramp.

Note that the up phase of the updown~ object's output occurs after the reset of a phasor or a zero-to-non-zero transition, whether the input ramp moves up or down. The down phase of the output occurs in the time before a reset (or the end of the ramp) is expected to occur.

Arguments

None.

Attributes

down [float]

Sets the time of the output ramp descending from the maximum value to 0 in milliseconds

level [float] (default: 1.)

Sets the maximum value of the trapezoidal function

up [float]

Sets the time of the output ramp ascending from 0 the maximum value in milliseconds

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

signal

The updown~ object produces a trapezoidal output in response to a signal ramp from 0 - 1 or 1 - 0.

See Also

Name Description
phasor~ Generate sawtooth signals
trapezoid~ Trapezoidal wavetable
kink~ Distort a sawtooth waveform
line~ Linear signal ramp generator
subdiv~ Integer Subdivision of a Phasor
zigzag~ Linked list function editor