TYPE: SOP State
TITLE: Sculpt Operation

The Sculpt Operation allows you to interactively sculpt the shape of your
geometry.

As you move the mouse over the geometry, you will see a circular brush follow
the surface to show where you would sculpt.  The size of this brush and its
orientation will show you which points will be affected by a sculpt operation.

Like all the brush tools, you have two different brushes: your Foreground brush
and your Background brush.  You sculpt with your foreground brush using the LMB
and the background with the MMB.  The amount sculpted is controlled by the "FD"
and "BD" parameters respectively.  

Each of the brushes also can have its own independent operation.  To select the
operation for each brush, Ctrl-RMB to bring up the operation menu.  The options
are:

- Deform Points: This moves each point under your brush along its normal by the
  amount of your brush's current displacement (FD or BD).
- Smooth Points: This averages out the brushed points positions creating a
  smoother geometry.
- Deform and Smooth: This combination operation will first deform the points,
  and then post-smooth them.
- Erase Changes: Thus is a local undo - it restores the points under your brush
  to the pre-sculpt values.

The other main parameters are:

- Radius: The size of the brush.
- Opacity: How strong the brush is. A fully opaque brush moves the point by the
  full displacement, while a less opaque brush does less.

The other Ctrl-RMB Menu options are:

- Circle/Square/Bitmap Brush: The shape of the brush.  The bitmap is set in the
  operation parameters dialog.
- Orient Brush To Surface: When disabled, the brush is always oriented the same
  way.  This is useful when sculpting crinkly geometry.
- Accumulate to Stencil: This advanced option is described in more detail in the
  manual.

See also: Comb, Paint, UVBrush
