Specifying a Reference Coordinate System

The reference coordinate system determines the orientation of the X, Y, and Z axes used by the transform. The type of transform system you use affects position, rotation, and scale transforms.

You specify your transform coordinate system using the Reference Coordinate System list.

Creating a Local Axis

While modeling, itÆs often helpful to have a temporary, movable local axis so you can rotate or scale about an arbitrary center.

Note: This technique does not work for animation. See Choosing a Transform Center for animation tips.

To create an adjustable local axis:

1. Create a Point helper object.

   You create helper objects in the Create panel. Click the Helpers button, click Point, and then click in a viewport.

2. Click Pick in the Transform Coordinate System list, and then click the point object.

   The name of the point object appears in the list.

   Now you can use the point objectÆs coordinate system as an adjustable axis.

To use the adjustable axis:

1. Place the point object where you want the rotate or scale transform to be centered.

2. Select the object you want to transform.

3. Choose the point objectÆs name in the Transform Coordinate System dropdown list.

4. Click Use Transform Coordinate Center in the Use Center flyout. For more information, see Choosing a Transform Center.

5. Proceed with the transform.