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Chapter 22: Animating with Constraints and Simple Controllers

Using the Walkthrough Assistant
One alternative to using the Path and Look At constraint is to use the Walkthrough Assistant. This tool is
accessed from the Animation menu. It opens up a utility panel with several rollouts, as shown in Figure
22.6. Using this panel, you can create a new camera, select a path, and set the viewport to use the created
camera. You can then use the View Controls rollout to cause the view to tilt to the left or right as you move
through the path. This automates the process of getting a camera to follow a path.

FIGURE 22.6
The Walkthrough Assistant automates several constraints into a single interface.

The Walkthrough Assistant also includes a Render Preview that you use to see the results. If you drag the
Time Slider to a different frame and click the Render Preview pane, the preview is updated. At specific
frames, you can drag the Turn Head slider to change where the camera is looking. You can even tilt the
camera up and down as well as side to side.
In the Advanced Controls rollout (which appears only after a camera has been created) are options for chang-
ing the Field of View and the Target Distance, which is useful if you’re using a Depth of Field effect. You also
can set the camera to move at a constant speed and an option to cause the camera to follow the path.

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