2017

Table Of Contents
Subdividing an Extended Bicubic
Subdivide the bicubic surface up to eight times to increase the number of vertices and tangents. Then translate
the vertices for a smaller region of the image for more precision. You should warp the surface with a small
number of subdivisions to obtain the best results. After applying some deformations to a large portion of
the surface, subdivide the surface further and perform deformations on a more localized region of the surface.
To subdivide extended bicubics:
1 From the Vertices menu, click Subdivide.
You can click the subdivide button up to eight times to further subdivide the surface. Click Merge to
undo subdivide operations.
2 Transform the tangents to achieve the effect you want.
To move the reference point:
1 Select the reference point.
The reference point turns red when selected.
2 Drag the reference point to a new location, or use the X, Y and Z vertex fields to assign a new coordinate
for the reference point.
To rotate multiple surface points:
1 Set the reference point values you want to use as the axis of origin using the X, Y, Z Vertex Position
fields.
2 Select multiple surface points by pressing Ctrl and dragging to select the surface points.
3 From the Tools box, select Rotate.
A 3D trackball appears on the reference point.
4 Use the 3D trackball to rotate the reference point and selected points.
All selected points rotate around the reference point.
To scale multiple surface points:
1 Set the reference point values you want to use as the axis of origin using the X, Y, Z Vertex Position
fields.
2 Select multiple surface points by pressing Ctrl and dragging to select the surface points.
3 From the Tools box, select Scale.
4 Drag in a direction in the image window to scale accordingly.
About Transforming Multiple Points
Use the magnet to transform a range of extended bicubic points. Use the magnet when there are many
surface points as a result of more than one subdivision. In the Vertices or UV Points menu, the magnet
controls include the Magnet button, the Magnet Transformation box, and the Magnet Curve Editor.
516 | Chapter 15 Compositing in 3D Space with Action