Apple Motion 3 User Manual
Page 1058
1058
Chapter 12
Using Shapes and Masks
Emission Range: A dial and value slider that restrict the area in which the dabs travel,
in the direction of the Emission Angle. Setting the Emission Range parameter to 0
degrees keeps dabs perpendicular to the paint stroke.
Life: A slider that defines the duration of each dab, in seconds. This specifies how long
each dab lasts before disappearing. This is similar to how sparks disappear after flying
away from a sparkler.
Life Randomness: A slider and value field that define an amount of variance in the life
of the paint dabs. A value of 0 results in no variance—all dabs from the selected stroke
share the same life span. A value greater than 0 introduces a variance defined by the
Life parameter, plus or minus a random value falling within the Life Randomness value.
Speed: A slider and value field that defines initial speed, determining how quickly each
dab flies away from the stroke.
Speed Randomness: A slider and value field that define an amount of variance in the
speed of the paint dabs. A value of 0 results in no variance—all dabs from the selected
stroke move with the same speed. A value greater than 0 introduces a variance defined
by the Speed parameter, plus or minus a predetermined random value falling within
the Speed Randomness value.
Spin: A dial and value slider that animate the dabs of a paint stroke by initially
spinning each individual dab around its center. Adjustments to this control are in
degrees per second.
Spin Randomness: A dial and value slider that define an amount of variance in the
spin of the paint dabs. A value of 0 results in no variance—all dabs from the selected
stroke spin at the same rate. A value greater than 0 introduces a variance defined by
the Spin parameter, plus or minus a random value falling within the Spin Randomness
value.
Pen Pressure: This parameter appears only when a stroke is created using the Paint
Stroke tool in the Toolbar. It allows you to affect the width, opacity, spacing, angle, or
jitter of the paint stroke based on the pressure of your stylus on the tablet when the
stoke was created. This parameter only appears when a stroke is created using the Paint
Stroke tool and a stylus and tablet.
These controls are identical to the Apply Pen Pressure (Shape behavior) parameters. For
a description of the Pen Pressure parameters, see “
Pen Speed: This parameter appears only when a stroke is created using the Paint
Stroke tool in the Toolbar. It allows you to affect the width, opacity, spacing, angle, or
jitter of the paint stroke based on the speed of your stylus on the tablet when the
stroke was created. This parameter only appears when a stroke is created using the
Paint Stroke tool and a stylus and tablet.