# Transform Constraint

Constrain one Shape to another.

Target - the shape you'd like to constrain to.

Offset - move your object in x, y.

Rest Position - the position your Shape will return to when Position Strength is set to 0.

Rest Offset - add/subtract a value to the Rest Position.

Rest Rotation - the rotation your Shape will return to when Rotation Strength is set to 0.

Rotated Offset - add/subtract a value to the Rest Rest Rotation.

Position Strength - a multiplier to Out Position. Adjusting this value will determine the position of your Shape along a vector between 0, 0 and the transform of your Target.

Out Position [read only] - shows the [x, y] values being output by the Element. Where the Id connection combines both the x and y positions this attribute allows you to connect the separate [x, y] attributes to other Elements.

Rotation Strength - a multiplier to Out Rotation.

Out Rotation - connect this attribute to the rotation of another Shape.

Example workflow to pick up a Shape with another Shape:

The quick way:

1. Follow steps 1-6 below (the long way).

2. Move to frame 50.

3. Select the Constraint.

4. Navigate to Animation > Constraints > Transform Constraint Tools > Pick Up.

5. Move to frame 150.

6. Navigate to Animation > Constraints > Transform Constraint Tools > Drop

Now Hand should 'pick up' Ball at frame 50 and then 'drop' it again at frame 75.

The long way:

1. Create 2 Shapes

2. Name one 'Hand' and the other 'Ball'.

3. Create a Transform Constraint.

4. Connect constraint.outPosition > ball.position

5. Connect Hand as your Target. on the Constraint.

6. Set 2 position.x keys (fr0 = -200, fr200 = 200) for Hand (animate it horizontally).

7. Set Position Strength on the Constraint to 0 for both X and Y.

8. On frame 50, copy Hand's Position X value and paste it into the Constraint's Rest Position X.

9. Set a key on Rest Position X.

10. Go back one frame.

11. Set a key on Position Strength X with a value of 0.

12. Go forward one frame.

13. Set a key on Position Strength X with a value of 100.

14. Go to the first frame.

15. Hit play.

At frame 50 Hand should 'pick up' Ball.

1. Move to frame 74.

2. Set a key for Position Strength X (should be a value of 100).

3. Move to frame 75.

4. Copy Hand's Position X value and paste it into the Constraint's Rest Position X.

5. Set a key on Rest Position X.

6. Set a key for Position Strength X with a value of 0.

7. Go to the first frame.

8. Hit play.

Now Hand should 'pick up' Ball at frame 50 and then 'drop' it again at frame 75.