Properties¶
Mask Layer¶
- Mask Layer
- Mask layers consists of one or several splines and used to “grouped” operation on splines. Layers can be used to create complex shapes and to define how the splines interact with each other. Splines belonging to the same layer can be animated together, for example by an item from motion tracker footage. Example of such tools might be parenting the whole set of splines to single motion tracking data or simple to transform all of them together.
- Opacity
ToDo.
- Invert
- ToDo.
- Blend
- ToDo.
- Falloff
- Feather. ToDo.
- Overlap
- Detect self intersections. ToDo.
- Holes
Option not to treat overlapping curves as holes. Concentric splines will generating holes in the mask.
By creating overlapping splines holes can be created, and it’s the layer membership that defines which splines interact to create holes. As addition, splines from the same layer are behaving in a way, that concentric splines are defining holes in mask, but if two splines from different layers are concentric they wouldn’t define hole – they’ll just be union in final mask.
Example¶
The purpose of mask layers can be explained with an example. Suppose there are two unwanted people in the footage, and one of them goes from left to right, and the other in the opposite direction. Two mask layers can then be used to mask them separately using a single mask data-block. At the point of intersection of these shapes they will be added together rather than creating a hole, as would happen if they were on the same layer. If the motion is simple enough, a single motion tracked point can be used to drive the location of the entire mask layer.
Mask Display¶
- Smooth
- Display the edge anti-aliased.
- Edge Draw Type
- Style of the edge.
- Overlay
Added mask overlay to both image and clip editors.
- Mode
- Alpha Channel
- Which displays rasterized mask as a grayscale image.
- Combined
- Which multiples image/clip with the mask.
Active Spline¶
- Feather Offset
- ToDo.
- Weight Interpolation
- ToDo.
- Cyclic
- If the spline is closed or not.
- Fill
- Disable calculation of holes.
- Self Intersection Check
- Fill self intersections.
Active Point¶
This panel is shown when both a tracking marker and mask is selected.
Parent¶
In the Movie Clip Editor it is possible to link the whole mask or its points to motion tracks. This way the mask or points will follow the tracks.
- Make Parent
Ctrl-P - Parents one or more selected spline points to the active motion tracker.
- Clear Parent
Alt-P - Clears any parenting relationship for the selected spline points.
- Parent
- Data ID to which the mask or spline is parented to in case of parenting to movie tracking data set to Movie Clip data-block.
- Type
- Point Track, Plane Track
- Object
- Object to parent to.
- Track
- Name of individual tracks.
Mask Settings¶
ToDo.