Rotating an entity via a menu function

Function Rotate can be activated in two ways:

• using menu item Modify > Rotate,

• using the [Rotate] () icon on the Geometrical manipulations toolbar.

The function works with selected entities and rotates them to a new location. The selection can be made:

• either before the activation of the function,

• or after the activation of the function.

The procedure for the rotation (selections is made after the function is started)

1. Call function Rotate.

2. Make the selection of entities you want to be rotated.

3. Press [Esc] to end the selection.

4. Define the centre of rotation.

5. Define the first reference point. (The angle of rotation is defined by means of two reference points. These points together with the centre of rotation define the rotation angle.)

6. Define the second reference point.

7. The move operation has been completed and the selection is cleared.

The alternative procedure for the rotation with pre-selected entities

1. Make the selection of entities you want to be rotated.

2. Call the Rotate function.

3. Define the centre of rotation.

4. Define the first reference point. (The angle of rotation is defined by means of two reference points. These points together with the centre of rotation define the rotation angle.)

5. Define the second reference point.

6. The move operation has been completed and the selection remains as it was prior to calling the rotation function.

Alternative with defined angle of rotation

In any of the above described procedures, you can alternatively define the axis and angle of rotation. The procedure will be explained for the option when selection of entities is made after the function is called.

Procedure to rotate an entity by given angle

1. Call function Rotate.

2. Make the selection of entities you want to be rotated.

3. Press [Esc] to end the selection.

4. There is a special icon added to the end of the toolbar above the command line: "Enter the angle of rotation". Press this icon.

5. The Rotation angle and axis dialogue is opened on the screen.

6. Input the angle and specify the way you want to define the axis (see below).

7. Confirm with [OK].

8. Input the centre of rotation.

9. If required (depending on the option selected in the Rotation angle and axis dialogue), define the axis of revolution.

10. The entity is rotated.

Rotation angle and axis dialogue

Rotation

Angle

Specifies the angle of rotation

Axis vector

Working plane normal vector	The axis of rotation is perpendicular to the current working plane.
Define axis by cursor	The axis must be defined by two points. The centre of rotation is input for all options. This option then requires one more point.
Enter custom axis vector	The axis of rotation is defined by the vector – see below.
Custom axis vector	The vector defining the axis of rotation if option Enter custom axis vector was selected.