9

Cone Primitive 173
2.
In any viewpor t, drag to define a r adius for the
base of the cone, then release to set it.
3. Move to up or down to define a heig ht, either
positive or negative, then click to set it.
4. Move to define a radius for the other end of t he
cone. Decrease this radius to 0 for a poin ted
cone.
5. Click to set the second radius and create the
cone.
Inter face
Creation Method rollout
Edge—Draws a cone from edge to edge. You can
change the center location by moving the mouse.
Center—Draws a cone from the center out.
Parameters rollout
The defaults produce a smooth, round cone of 24
sides with five height segments, one c ap seg m ent,
and the pivot point at the center of the base. For
improved rendering of smoothly shaded cones,
particularly those with pointed tips, increase the
number of height segments.
Radius 1, Radius 2—Setthefirstandsecondradii
for the cone. The minimum value for both is 0.0.
If you enter a negative value, the software converts
it to 0.0. You can combine these settings to create
pointedandflat-toppedcones,uprightorinverted.
The following combinations assume a positive
height:
Radius Combinations Effect
Radius 2 is 0 Creates a pointed cone
Radius 1 is 0 Creates an inverted pointed
cone
Radius 1 is larger than
Radius 2
Creates a flat-topped cone
Radius 2 is larger than
Radius 1
Creates an inverted
flat-topped cone
IfRadius1and2arethesame,acylinderis
created. If the two radius settings are close in s ize,
the effect is s imilar to applying a Taper modifier
to a cylinder.
Effect of Radius settings
Height—Sets dimension along the central axis.
Negative values create the cone below the
construction plane.
Height S egments—Sets the number of divisions
along the cone’s major axis.
Cap Seg ment s—Sets the number of concentric
divisions around the center of the cone’s top and
bottom.
Sides—Sets the number of sides around the cone.
Higher numbers shade and render as true circles
with Smooth selected. Lower numbers create
regular polygonal objects with Smooth off.