The Object Parameters
rollout controls let you combine and separate Body Objects while
maintaining the solid-geometry format. Also available here are commands
for subdividing objects, splitting faces, and performing simple
Boolean operations. For example, you can position a spline curve
over an object and then use the curve to cut through the entire
object or selected faces in the view direction, thus subdividing
To use the Object Parameters controls:
Using the Object Parameters
rollout tools to combine a Body Object (the “source”) with another
object (the “target”) follows a slightly different procedure than
does attaching with other object types in 3ds Max Design. This applies
to all operations exept Detach.
- Select the source object: the Body Object
- On the Modify panel Object Parameters rollout, click Pick Object.
- Select the target object.
- Click the button for the operation: Attach,
Merge, or any other on the rollout (except Detach).
This combines the objects
in the specfied way.
- Pick Object
Click this button, select the
top-level object to combine, and then click Attach, Merge, Project,
or either Cut button.
Attaches an object by simply
inserting it into the Body Object as a separate element.
Removes (detaches) selected
sub-objects from the parent object and creates a new Body Object.
Select one or more faces
or elements and click Detach (it’s not necessary to use Pick Object).
The detached sub-objects are removed from the source object and
become separate Body Objects.
Merges the selected object
into the Body Object using the Intersection process.
Left: Spheres attached
(retain element status)
Right: Spheres merged
(single element, new center edge shows intersection)
Projects a curve onto
a Body Object to create new edges on that Body Object.
Projection occurs along
the normal of a single face. If the Body Object has more than one
face, select one face to project the curve onto before using Project.
Cut With Selected Object
- 3-D Cut
Object with a 3D object. This produces new edges corresponding
to the intersection of the object with the Body Object geometry.
After cutting, the cutter object is deleted.
To use, position the
objects so the 3D object intersects the body Object where you want
to create new faces, click Pick Object, select the 3D object, and
then click 3-D Cut. The cut is performed and the cutting object
Left: Body Object (box)
with intersecting cylinder
Right: After using
3-D Cut, new edges and faces appear where the cylinder intersected
- View Cut
Cuts the Body
Object using a profile projected parallel to the current active
view direction. Typically the profile is a spline curve
or NURBS curve.
To use, position the
objects so the profile is superimposed over the Body Object to cut
in the active viewport, click Pick Object, select the profile, and
then click View Cut. The cut is performed and the profile is deleted.
The following illustration
shows two boxes, converted to Body Objects, after using View Cut
with two elliptical splines. The position of each spline with respect
to its box was the same, but the pairs were rotated differently,
so the results are different.
Left: The spline was
aligned with the box surface and the viewpoint.
Right: The spline was
offset with respect to the axis between the box surface and the viewpoint.
- Cut Selected Only
When on, cuts only selected
faces or elements. Other objects that intersect are not affected.
Explode into Separate Objects
Use the controls in this
group to break apart the Body Object geometry into separate Body
Objects by decomposing it by Volume (closed solid), Element (connected
face set), or Face.