The revolving door seems lonely, spinning by itself in the viewport. You can use the Merge command to put this revolving door into context, by merging in a scene of an entranceway.

You'll also learn to animate the opening of parametric doors.

Set up the lesson:

• Continue from the previous lesson, or open \startup\revolving_door.max.

Merge a scene:

1. From the Application menu, choose Import Merge, browse to \startup\entranceway.max, and click Open.

   After you click the file name, the Merge File dialog displays a thumbnail of the scene.

   

2. In the Merge dialog, click the All button to select all the objects in the scene, and then click OK.

   

3. If the Duplicate Name dialog appears, click Skip for any duplicate objects.

   The revolving door is now in the middle of the entranceway.

   NoteIf you've been modeling in metric units you might need to scale the revolving door so it matches the new scene. You can use the Rescale World Units utility if you need to accomplish this.
4. Click an empty area of the Perspective viewport to deselect all objects.
5. In the Perspective viewport, click (Zoom), and then zoom back so you can see the double doors.

   

Animate the double doors:

1. Turn on (Auto Key).
2. Drag the Time Slider to frame 100.
3. Select the Double doors object. In the Perspective viewport, these doors are to the right of the revolving door.
4. On the Modify panel Parameters rollout, set Open to 70.0 degrees.

   The spinner arrows are now outlined in red, indicating that Open is an animated parameter that has a key on the current frame.

   

5. Drag the Time Slider to frame 200.
6. On the Modify panel, set Open back to 0.0 degrees (you can just right-click the spinner arrows).
7. Turn off (Auto Key).
8. Go to the first frame, then Play the animation.

   The revolving doors go around and the double doors swing open.

   

Fine-tune the animation:

You can use the track bar to make the double doors open and close faster.

1. Make sure the double doors are selected, and then on the track bar, drag the key at frame 100 to frame 25. Watch in the status bar for the frame number.
2. Similarly, move the key at frame 200 to frame 50, and then play the animation.

   The doors open and close more quickly.

   You can make the doors open and close repeatedly throughout the animation by using Track View.

3. On the Modify panel, find the animated Open parameter, and right-click within the numeric field. From the menu that appears, choose Show In Track View.

   

   A Track View – Curve Editor window opens with the Double doors Open parameter highlighted.

   

4. On the Track View toolbar, click (Parameter Curve Out-Of-Range Types).
5. On the Parameter Curve Out-Of-Range Types dialog, click the Ping Pong graph to make it active (the buttons below it highlight).

   

   Click OK to accept the change and close the dialog, and then close the Selected track view dialog.

6. Play the animation again.

   Now the doors open and shut throughout the animation.

Save your work:

• Save the scene as my_entryway_completed.max.

  You can find a finished version of the scene in revolving_door_final.max.