Finishing and Editing Masks

These mask settings can be found at the bottom right of the image window.

Finish button

Complete the creation of the mask without closing it. Once you click Finish, or a mask is closed, this button disappears.

Edit Box button

Enable to adjust the mask after it has been drawn. Press Ctrl and select multiple mask vertices to form the Edit Box.

Offset Axis button

Enable to be able to offset the axis position independently of the GMask. You can use the Axis menu controls or the axis icon in the image window.

Centre button

Click to centre the axis within the GMask shape. Available when Offset Axis is enabled.

Customizing Mask Settings

You can customize a mask's properties by changing settings in the node's Mask tab. Some settings may be different depending on how the GMask is accessed (such as through the GMask Tracer node).

GMask Tracer Colour field

Available when using a GMask through the GMask Tracer node. Displays the blend between the outgoing and incoming images inside the mask.

Transparency field

Displays the percentage of transparency of the mask. Editable.

Intensity field

Displays the blend between the outgoing and incoming image inside the mask. Editable.

Smoothing field

Displays the amount of smoothing applied to softness regions. Editable.

Blur field

Displays the amount of blur applied to the GMask (with or without softnesses). Editable.

Camera box

Specify which camera to take into account when tracking or viewing in Action Object view (F8). Select Auto Frame when the GMask is co-planar with the image.

Camera field

Displays the active camera number. Non-editable.

Closed button

Enable to connect a spline from the last point in the mask to the first control point (enabled automatically if you close the mask gesturally).

Hole button

Enable to define the attached 3D Shape spline as a hole. Disable to keep the spline filled. Available only if a 3D Shape node is parented to a GMask.

Invert button

Enable to apply settings to the area outside of the mask.

Lock button

Enable to lock the relative position of vertices.

Animation box

Select Shape Animation to group all keyframes into a single channel called shape; select Vertex Animation to locate all keyframes on their respective channels.

Shape Animation Type box

Select the interpolation type for the shape animation curve.

Tolerance field

Displays the segmentation value of the spline. Use to smoothen or wrinkle the spline. Editable.

Blend Mode box

Select a blending mode for the mask when it overlaps with another mask. Locked when a master blend option is selected in the Output menu.

Mask Tracer Blend Mode box

Available when using a GMask through the Mask Tracer node. Select a blending mode for the mask images.

Correlation box

Select how overlapping softnesses blend together. This box is displayed when an Autodesk Maya Composite blending mode is selected in the Blend Mode box.

Post Processing box

Select whether to use the mask as a mask or occluder when encountering post processing effects. If you GMask-link a Gmask to a specific post-processing node, for example a lens flare, and choose Use As Occluder, only the effect will be blocked by the occluder. Use As Occluder affects occlusion of Action Lens Flares, as well as defining the result of the Occluder output passes, which can be used as an Action output as well as an input for any Camera FX.

Active button

Enable to activate the GMask for rendering. Disable to use the GMask for tracking purposes only.

Motion Blur button

Enable to apply a blur effect to the selected mask. (Motion blur must be enabled in the Setup menu.)

Visibility box

Select to apply the mask to the Right, Left, or Mono camera in a stereo scene.