User Manual

A double polyline uses an inner and outer shape for non-uniform softness.
Converting a Single Polyline to a Double Polyline
To convert a mask into a double polyline, click the Double Polyline button in the Polyline toolbar
or right-click in the viewer and select Make Outer Polyline from the mask’s contextual menu.
The shape will be converted into an inner and an outer polyline spline. Both polylines start with
exactly the same shape as the original single polyline. This keeps the mask sharp to start with
and allows any animation that may have already been applied to the shape to remain.
Make Double Polyline button.
The control points on the outer shape are automatically parented to their matching points on
the inner shape. This means that any changes made to the inner shape will also be made to the
outer shape. The relationship is one-way; adjustments to the outer shape can be made without
affecting the inner shape.
A dashed line drawn between the points indicates the relationship between the points on the
inner and outer shapes.
Chapter – 71 Rotoscoping with Masks 1452