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geom3d

  

center

  

find the center of a given geometric object

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

center(cn, c)

Parameters

cn

-

(optional) name

c

-

sphere, polyhedron

Description

• 

The routine returns the name of the center of the given sphere, or polyhedron c.

• 

If c is a stellated polyhedron (i.e., geom3d[IsStellated](c) returns true), center(c); returns the center of the core of the given stellated polyhedron.

• 

if c is a facetted polyhedron (i.e., geom3d[IsFacetted](c); returns true), center(c); returns the center of the case of the given facetted polyhedron.

• 

If the first optional argument cn is given, the name of the center c becomes cn.

• 

Use coordinates or detail for more details on the center.

• 

The command with(geom3d,center) allows the use of the abbreviated form of this command.

Examples

withgeom3d:

Define a sphere

spheres,x2+y2+z2+x+y+z3=0,x,y,z,'centername'=o

s

(1)

centers

o

(2)

coordinates

12,12,12

(3)

centero1,s

o1

(4)

centers

o1

(5)

coordinates

12,12,12

(6)

See Also

geom3d[polyhedra]

geom3d[sphere]

 


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