The Animation Tools and Interface

Before jumping into the animation process, you should review the interface and tools that are available to you. The following sections will help you get familiar with the interface so that you can find the attributes and functions you need for animation.

Setting Up an Animation

Before you create any animation in a scene, you need to configure some standard settings. Two components of Maya's user interface are specific to animation: the Range Slider and the Time Slider. To make sure they are displayed, click Hotbox Hotbox Controls to open a marking menu with several options for the user interface (see Figure 10.1). Use this marking menu to display the Range Slider and Time Slider in your Maya interface.

Figure 10.1. Use the Hotbox to quickly toggle displaying parts of the user interface.

The Range Slider and Animation Preferences

Figure 10.2 shows the Range Slider with its controls. The Range Slider is used to set the total length of the animation in frames. You can also use the Range Slider to temporarily limit the range of playback and set the playback start and end frames. In the figure, frames 60 “120 are focused on. After this segment has been edited, the range bar can be moved to another focus area or pulled out to show the entire animation.

Figure 10.2. Use the Range Slider to control animation length and limit playback to specific ranges.

Another way to control settings for your animation is to use the Preferences dialog box. To open it, click the Animation Preferences button at the far right of the Range Slider (refer to Figure 10.2) or choose Window Settings/Preferences Preferences on the menu. Before making any changes, reset all settings in the dialog box to defaults (Edit Restore Default Settings). Feel free to hide the Shelf and Tool Box to minimize clutter in the Maya interface.

You use the Preferences dialog box, shown in Figure 10.3, to change values for the animation timeline and playback. You can also set the total time for your animation, the size of the timeline (the Time Slider), and other related features.

Figure 10.3. Use the Preferences dialog box to specify the length of your animation and the playback speed in the viewports.

Specifying the Frame Rate

Specifying the frame rate is the first aspect of setting up your animation. The frame rate affects the length and fluidity of your animation. By default, Maya sets your animation to Film, which plays at 24 fps. Every second of your animation, therefore, plays through 24 frames. You can see that a few minutes of animation quickly adds up to thousands of rendered images!

note

For animation that will be put on videotape, you typically use 30 fps in the United States and 25 fps in some other countries. NTSC (National Television Standards Committee) is a 30 fps standard developed in North America for television broadcasting. Western European and other countries use PAL (Phase Alternate Line), with a 25 fps standard. Render resolutions are also different for the two formats.

Setting the Range

The range of an animation determines the total length in frames. When determining the range, you need to decide how long you want the animation to last in seconds. Then multiply the animation's length in seconds by the frame rate (in this case, 30 fps). The animation you create in this chapter will be 20 seconds long, so you would use this calculation:

30 fps x 20 seconds = 600 frames (animation range)

The Time Slider

The Time Slider is a vital part of the animation interface in Maya. Figure 10.4 illustrates its available functions. You can use the Time Slider to play your animation, to set it to a particular frame, and even to see animation keys and where they are placed.

Figure 10.4. The Time Slider and its controls.

Click in the Time Slider area and drag left and right to "scrub" the animation back and forward in time. A black vertical line indicates the current frame. When keys have been set for the currently selected object, thin vertical red lines appear in the Time Slider area to indicate the times for those keys. In the playback controls, buttons for going forward one key or back one key are available to easily hop from key to key.