Normally, the program assumes all coordinates
to be relative to the current UCS. The following functions convert
points between UCS and WCS.
- w2u(p1)
-
Converts point p1 expressed
in the WCS to the current UCS.
- u2w(p1)
-
Converts point p1 expressed
in the current UCS to the WCS.
You can use w2u to find
the WCS origin in terms of the current UCS:
w2u([0,0,0])
Filtering the X, Y, and
Z Components of a Point or Vector
The following functions filter the X, Y,
and Z components of a point or vector.
Point-filter functions
|
Function
|
Description
|
xyof(p1)
|
X and Y components
of a point; Z component is set to 0.0
|
xzof(p1)
|
X and Z components
of a point; Y component is set to 0.0
|
yzof(p1)
|
Y and Z components
of a point; X component is set to 0.0
|
xof(p1)
|
X component of a point; Y and Z components
are set to 0.0
|
yof(p1)
|
Y component of a point; X and Z components
are set to 0.0
|
zof(p1)
|
Z component of a point; X and Y components
are set to 0.0
|
rxof(p1)
|
X component of a point
|
ryof(p1)
|
Y component of a point
|
rzof(p1)
|
Z component of a point
|
The following example provides the Z component
of a point expressed in spherical coordinates:
zof([2<45<45])
The following example provides a point whose X and Y coordinate
values are taken from point a and the Z coordinate
value from point b:
xyof(a)+zof(b)
