2012

When you use these Snap modes, enter only the three-character name. For
example, when you use the Center Snap mode, enter cen. CAL Snap modes
set the value of the LASTPOINT system variable.
CAL Snap modes
Snap modeAbbreviation
ENDPOINTEND
INSERTINS
INTERSECTIONINT
MIDPOINTMID
CENTERCEN
NEARESTNEA
NODENOD
QUADRANTQUA
PERPENDICULARPER
TANGENTTAN
The following example uses the Center and Endpoint Snap modes in a CAL
expression:
(cen+end)/2
CAL prompts for a circle or arc and an object. It then determines the midpoint
between the center of the circle or arc and the end of the selected object.
Using the Midpoint Snap mode, in the following example CAL prompts for
an object and returns a point 1 unit in the Y direction from the midpoint of
the selected object:
mid+[,1]
The following example uses the Endpoint Snap mode to calculate the centroid
of a triangle defined by three endpoints:
(end+end+end)/3
188 | Chapter 4 C Commands