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Numeric functions
Description Function
Absolute value of the number abs(real)
Number rounded to the nearest integer round(real)
Integer portion of the number trunc(real)
Angles in radians converted to degrees; for example, r2d(pi) converts
the pi radians to 180 degrees r2d(angle)
Angles in degrees converted to radians; for example, d2r(180) converts
180 degrees to radians and returns the value of pi d2r(angle)
The constant pi pi
Calculate a Vector from Two Points
The functions vec and vec1 calculate a vector from two points.
vec(p1,p2)
Provides the vector from point p1 to point p2.
vec1(p1,p2)
Provides the unit vector from point p1 to point p2.
The following example uses CAL to move selected objects 3 units in the
direction from the center of one selected circle to the center of another selected
circle:
Command: move
Select objects
Specify base point or displacement: 'cal
>> Expression: 3*vec1(cen,cen)
Select entity for CEN snap: Specify a circle or an arc
Specify second point of displacement or <use first point as displacement>: Specify
a point or press ENTER
The following examples illustrate the meaning of vector and point calculations.
Examples of vector and point calculations
Meaning Expression
Determines vector translation from point a to point b. vec(a,b)
Calculate a Vector from Two Points | 195