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The Masks tool in SketchBook Motion

Use the Masks tool for hiding animated content. Say you have an animated object that moves across the scene. Part of the animation plays over-top of something it should go behind. To fix this, instead of making edits to the animation, use a mask.

Example without masks created in SketchBook MotionIn this example, there are no masks, so the particles cover key elements of the ventilation system. Also, some of the particles are escaping from the first chamber of the system.

If the animation only needed to appear in one area, you could use the Boundary tool; however, in this example, it need to appear in multiple areas.

Example using masks in SketchBook MotionIn this example, the artist used masks, so the particles appear to be flowing through elements of the ventilation system. They are also contained within the chambers of the system.

With the animated layer selected, tap Mask icon in SketchBook Motion. Draw an outline of the masked area.

  • If the mask doesn’t cover enough of the area, just draw over that area to increase the mask.
  • If the mask covers too much, tap Undo icon in SketchBook Motion Undo and draw the mask again.
  • If you want to delete a mask, tap Delete icon in SketchBook Motion Delete and select Delete Masks in SketchBook Motion Delete Masks from the menu.

Using the Masks tool

  1. Once you’ve created some animation, in the toolbar along the bottom, tap Masks.

    Grow animation toolbar showing the Boundary tool in SketchBook Motion
  2. Draw the area where you don’t want the animation to appear.

    • If the mask doesn’t cover enough of the area, just draw over that area to increase the mask.
    • If the mask covers too much, tap Undo icon in SketchBook Motion Undo and draw the mask again.
    • If you want to delete a mask, tap Delete icon in SketchBook Motion Delete and select Delete Masks in SketchBook Motion Delete Masks from the menu.
  3. Tap another tool or layer to exit Masks.

 

Updated on September 22, 2017

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