QStretch Op Property Editor

Deforms an object dynamically in response to its motion.

To apply: Select one or more objects, clusters, or points then choose Deform Quick Stretch from the Model or Animate toolbar.

To redisplay: Select the deformed object then choose Edit Properties Modeling Properties and click the QStretch Op tab.

Overview

The parameters on the Overview tab control how an object deforms in response to four separate aspects of its motion: Linear Velocity, Angular Velocity, Linear Acceleration, and Angular Acceleration.

Mute	Toggles the deformation on and off without affecting the values of other parameters.
Flex	Bends back in the direction of motion as if due to wind resistance.
Stretch	Elongates in the direction of motion.
Yield	Bulges as if internal mass was being displaced.

Other tabs

The other tabs give fine control over the deformations caused by each aspect of motion. The parameters are the same on each page.

Mute	Toggles the entire Qstretch deformation on and off without affecting the values of other parameters. This is the same option as on the Overview tab.
Reference for Lock X/Y/Z	Determines which coordinate system is used when you lock axes: Global or Local. Local is particularly useful when there is a rotational component to the motion, such as when animating along a path.
Flex	Bends back in the direction of motion as if due to wind resistance. This is the same option as that in the corresponding section of the Overview tab.
Stretch	Elongates in the direction of motion. This is the same option as that in the corresponding section of the Overview tab.
Yield	Bulges as if internal mass were being displaced. This is the same option as that in the corresponding section of the Overview tab.
Ampl.	The sensitivity of the deformation with respect to the motion
Max.	The maximum amount of deformation in terms of the object's bounding box. With a value of 1, an object could elongate up to twice its original size; with a value of 0.5, it could elongate up to 1.5 times its original size, and so on.
Profile	The profile of the deformation. This parameter applies to Flex and Yield. Curved. The object bends into a curve as if it were flexible. Linear. The object bends with a linear profile as if it were non-flexible but still subject to shear forces.
Volume	How the object deforms when Stretch is on: Keep Volume. As the object elongates in the direction of motion, it becomes thinner in the other directions to preserve the approximate volume. This results in a squash-and-stretch effect. Free Volume. As the object elongates, the other directions are unaffected as if the object had an elastic surface.
Lock X, Y, Z	Prevents the deformation from being applied in the corresponding axis. The reference can be local or global, depending on Reference for Lock X/Y/Z.

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