Autodesk 12812-051462-9011 User Guide 3 - Page 2501

Mask Viewport to Safe Region By default, the viewport area outside the outermost safe frame displays the contents of the viewport. When this switch is on, that area is left blank. Update Background While Playing Turns on the updating of bitmaps in the viewport background when you play an animation. This capability lets you check your action against a 2D rotoscoped on page 8109 background, even if your animation plays at 1 frame per second. When on, an IFL file on page 7339, AVI file on page 7326, or MOV file on page 7348 updates on each frame when you click the Play button. To use this feature, turn off the real-time on page 8104 switch on the Time Configuration dialog on page 7565. The viewport updates not only when you click Play, but also when you drag the time slider. Filter Environment Backgrounds Affects the background displayed in the viewport only when the Viewport Background dialog > Use Environment Background switch on page 154 is on. When you turn on Filter Environment Backgrounds, the environment background is filtered in the viewport, resulting in an antialiased image. When you turn it off, the background image is not filtered, resulting in an aliased, pixelated image. Note the following: ■ Filtering slows down the recalculation of the viewport background image about 30 to 40 percent. Unless you really need that smooth display, it's best to leave the option off. ■ This option doesn't affect the rendered background image, and doesn't effect the viewport backgrounds when you turn on Use Environment Background. Low Res Environment Background Reduces the size of the environment background map by half, and then magnifies it to the size needed for the viewport. This results in a chunkier, pixelated appearance, but speeds the rendering in the viewport by four times (because it halves the width and the height of the original image). TIP Unless you need fine detail in your environment background, keep this switch enabled. Display World Axis When on, displays a world axis in the lower-left corner of all viewports. Default=on. 7756 | Chapter 26 Customizing the User Interface