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2 On the Motion panel, on the Position list, double-click Position
Constraint.
The Position constraint parameters are located under the Position
Constraint rollout.
3 Click a target from the list.
4 Turn on the Auto Key button.
5 Adjust the Weight spinner or enter a numerical value for the weight
value.
Example: To assign a Position constraint with two targets and editing weights:
1 In the Top viewport, create a sphere, a box, and a cylinder so that the
box is between the sphere and the cylinder.
2 Click to select the box, assign a Position constraint, and select the sphere
as the target.
3 Click to select the box, assign a Position constraint, and select the cylinder
as the target.
The box is now position-constrained between the two targets.
4 In the Top viewport, move the sphere around.
As the sphere moves, the box maintains an equal distance between the
sphere and the cylinder. This is because the weight values for both targets
are equal. By default the values are 1.00. If the sphere had a higher weight
value than the cylinder, the sphere would influence the box more than
the cylinder.
5 To edit the weight values, select the box.
6 Open the Motion panel and view the Position Constraint rollout.
7 Click the Cylinders name in list of targets.
8 Using the Weight spinner, change the value from 50 to 20.
As the value decreases, the box moves closer to the sphere.
9 In the Top viewport. select the cylinder and move it around.
10 In the Top viewport, select the sphere and move it around.
The sphere has more influence over the boxs movement than the
cylinder.
3306 | Chapter 15 Animation