To move CVs on
a curve or surface
- Choose the Move tool.
- Press
on the
curve or surface and choose Control Vertex.
- Select the CVs you want to edit and use
the manipulator to move them.
TipWith a CV selected
you can press the
and
keys
to select the next/previous CV in the row. On a surface, press the
and
keys
to select the next/previous CV in the column.
NoteAvoid tweaks (moving
CVs) on objects with history. If you tweak an object with history,
the tweak is applied to a specific component ID. Subsequent changes
to the object’s history can cause the component IDs to change, altering
the effect of the tweak.
For example, if you revolve
a curve to create a surface, then tweak CV number 3 on the surface,
the tweak will always apply to CV number 3. If you later change
the revolve node attributes to reduce the number of segments on
the surface, the CV that you tweaked will now have a new number,
and the tweak will no longer be applied to it. The tweak will be
applied to the CV that is now number 3, which may be in a different
location on the surface.
To reshape
a curve with the Curve Editing tool
- Select
Edit Curves > Curve Editing Tool.
- Click the curve.
- Do any of the following:
- Drag the parameter position handle to
move the manipulator along the curve.
- Drag the point position handle to move
this point. The curve will reshape so the curve passes through the
point as you move it.
- Drag the tangent direction handle to
change the direction of the curve at this point.
- Drag the tangent scale handle to change
the “speed” of the curve at this point.
- Click a dashed line to align the tangent
at this point with one of the axes.
To reshape a surface with
the Surface Editing tool
- Select
Edit
NURBS > Surface Editing > Surface Editing Tool.
- Click the surface.
- Do any of the following:
- Drag the parameter position handle to
move the manipulator across the surface.
- Drag the point position handle to move
this point. The surface will reshape so the surface touches the
point as you move it.
- Click the tangent direction toggle (the
double circle) to switch between editing the U, V,
and Normal tangent.
- Drag the tangent direction handle (the
box) to change the tangent of the surface at this point.
- Drag the tangent scale handle to change
the “speed” of the tangent at this point.
- Click a dashed line to align the tangent
at this point with one of the axes.
TipThe
Surface
Editing Tool deforms a region within two spans of the manipulator.
Deformation decreases with distance from the tool position.
You can use the Snap
to curves option in the Status Line to snap the manipulator
to an isoparm, or Snap to grids to snap to a
patch corner. The snapping occurs to the isoparms or patch corners
that appear when you display the object with
Display > NURBS > Rough—not
the isoparms or patch corners that appear only with finer Smoothness settings.
To reshape a curve or
surface with the Soft Modification tool, see the following:
