3D Compositing with Action > Action: Surfaces > Modifying Surfaces >

# Vertices Settings for Bicubic and Extended Bicubic Surfaces

For bicubic and extended bicubic surfaces, there are extra controls available in the Vertices tab.

(a) Subdivide button(b) Shape Channel button(c) Magnet Transformation box(d) Reference Point fields(e) Reset Selection box(f) 3D Handles button

Subdivide button
  Click to subdivide the extended bicubic surface into more sections (can be clicked multiple times). See Subdividing an Extended Bicubic.

X Position field
  Positions the selected surface points along the X axis. Editable.

Y Position field
  Positions the selected surface points along the Y axis. Editable.

Z Position field
  Positions the selected surface points along the Z axis. Editable.

X Rotation field
  Rotates the selected surface points along the X axis. Editable.

Y Rotation field
  Rotates the selected surface points along the Y axis. Editable.

Z Rotation field
  Rotates the selected surface points along the Z axis. Editable.

X Scale field
  Scales the selected surface points along the X axis. Editable.

Y Scale field
  Scales the selected surface points along the Y axis. Editable.

Z Scale field
  Scales the selected surface points along the Z axis. Editable.

Proportional Scale button
  Enable to scale the surface points proportionally.

Magnet button
  Enable to transform a range of extended bicubic surface points. Use in conjunction with the Magnet Transformation box. See Transforming Multiple Points.

Magnet Transformation box
  Select a transformation type to use when Magnet is enabled.

Magnet Curve Editor
  Displays the weighted polarity from the centre to the edge of the magnet.

Magnet Curve Home button
  Resets the position of the magnet curve after panning.

Magnet Curve Undo button
  Undoes a change to the Magnet Curve Editor.

Magnet Curve Reset button
  Resets the Magnet Curve Editor.

Vertex Position X field
  Defines the position of the bilinear or bicubic vertices on the X axis. Editable.

Vertex Position Y field
  Defines the position of the bilinear or bicubic vertices on the Y axis. Editable.

Vertex Position Z field
  Defines the position of the bilinear or bicubic vertices on the Z axis. Editable.

Shape Channel button
  Enable to use the Shape channel in the Channel Editor. Disable to use individual Vertex channels in the Channel Editor. See Reshaping Using the Channel Editor.

Sort button
  Enable to sort non-flat surfaces where overlapping transparent regions are causing artefacts.

Auto Adjust button
  Enable to scale adjacent tangents automatically. Auto Adjust creates a smooth curve between points in the deformation. If you want to work on a specific area of the image without affecting other tangents, disable Auto Adjust.
  NoteIf you move a tangent explicitly, it is not affected by Auto Adjust. Click Reset Select or Reset Shape so that the tangents will be affected by the Auto Adjust mode.

3D Handles button
  Enable to allow Z buffering of the vertices. By default, the vertices are always visible, regardless of their position in Z space in relation to other media.

Reset Selection box
  Select whether to reset surface handles to their default position (Reset Shape) or reset selected points (Reset Select) on a bilinear or bicubic surface.