Chapter 20 Using Show Motion to View a Model 541 Copyright Goodheart-Willcox Co., Inc. Track Left When Track left is selected in the Movement type: drop-down list, the camera will move from right to left. This results in the view moving from left to right. This move- ment occurs over the specifi ed distance and duration. The Track left movement type has Duration: and Distance: text boxes as described previously and the Always look at camera pivot point check box, Figure 20-13. If the Always look at camera pivot point check box is checked, the center of the view remains stationary. As a result, the view in the shot appears to rotate about this point instead of sliding across the screen. The best way to visualize this motion is to use the Preview button with the option checked and then unchecked. This option is available for all “track” and “crane” movement types. When Track left is selected, the camera drop-down list is automatically set to Half-way point. This means the preview image is the middle point of the animation. It will be displayed at the midpoint of the Duration: value. PROFESSIONAL TIP PROFESSIONAL TIP If the Distance: value is large, the screen may be blank for a few moments until the camera moves enough to bring the model into view. If this is not what you want, decrease the Distance: value or check the Always look at camera pivot point check box. Track Right When Track right is selected in the Movement type: drop-down list, the camera will move from left to right. This results in the view moving from right to left. This movement type has Distance: and Duration: text boxes and the Always look at camera pivot point check box. These options function in the same manner as described for the Track left movement type. When Track right is selected, the camera drop-down list is automatically set to Half-way point. Crane Up Where the “track” movement types move the view left and right, the “crane” move- ment types move the view up and down. When Crane up is selected in the Movement type: drop-down list, the camera will move from bottom to top and then backward. This results in the view moving from top to bottom and zooming out. This movement type has the Duration: text box and the Always look at camera pivot point check box described previously. The Always look at camera pivot point check box is checked by default. This movement type has three additional options, Figure 20-14. The value in the Distance Up: text box is the distance the camera is moved upward. The value in the Distance Back: text box is the distance the camera is moved backward. The backward movement is typically short compared to the upward movement. Set the duration Set the distance Check to rotate the view about the camera pivot point Figure 20-13. The settings for the Track left movement type.