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Object Reference
72
Friction See the discussion of Mass-Spring mode under Physic above.
Speed This value multiplies the balls’ speed after Physics computation by a user-
defined expression. Input a singleton for the same effect on all balls, otherwise
input a vector. Experiment with negative values for crazy effects.
About the MultiBall ADSR+H
The next four properties relate to the “brightness” or z variable envelope
that can be used in ephemeral mode. You specify time values for the Attack, Decay, and
Release in seconds as well as a Sustain level between 0 and 1. Unlike a keyboard
ADSR, the MultiBall ADSR goes through its entire cycle when you touch the surface to
trigger the appearance of a ball. If the ball is still tracking your finger when it reaches
the end of the Decay portion of the envelope, the z value (brightness) will remain at the
sustain level until you lift your finger off the surface. At that point (or before, if your
finger has already left the surface), the Release portion of the envelope will be
triggered, and the z variable will return to 0.
Attack Applies only when using ephemeral mode. The Attack value specifies the number
of seconds over which the z variable (brightness of a ball) increases from its
initial value of 0 to a maximum of 1 after you touch the screen. As an example, if
the Attack value is 0, the ball will be at full brightness the moment you touch the
screen.
Decay Applies only when using ephemeral mode. The Decay value specifies the number
of seconds over which the brightness will decrease after the initial Attack portion
of the envelope has completed. During the Decay portion of the envelope, the z
variable (brightness of a ball) will decrease from 1 to the level set by the Sustain
value.
Sustain Applies only when using ephemeral mode. The sustain value is the level
(between 0 and 1) at which the brightness of the ball will remain as long the
MultiBall Object is tracking your finger within its space. The Sustain level is
reached after the Attack and Decay portion of the envelope have completed. If
your finger lifts up from the touch surface before the completion of the Attack
and/or Decay portion of the envelope, the Release portion of the envelope is
triggered immediately after the Decay portion completes, and the brightness
ultimately goes to 0.
Release Applies only when using ephemeral mode. The Release value specifies the
number of seconds over which the brightness of a ball will decrease from its
Sustain level to 0, starting at the moment that you lift up (“release”) your finger
from the touch surface.
Hold Its effect is similar to a sustain pedal, freezing the Object’s state as long as its
value is 1. When set to 0, if has no effect. This means this parameter should be
used with a mathematical expression depending on other Objects. For instance,
if you have a Switch Object named Sustain in your interface, you can set the hold
parameter of a Pad to Sustain.x so the Switch gets the ability to freeze the
current lightness.
OSC Data
Lemur->Host The x, y, and z variables are transmitted from the Lemur with a list of values
representing the positions of each of the balls. The number of items in the list of
values is equal to the number of balls the Object is using. The x variable is