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8.1.9 ARC DISTANCE OFFSET
(― )
(＋)
Offset point from the arc is calculated.
Input: arc : start point, end point and radius ( R )
distance along arc from start point ( DI )
offset from the arc ( OD ) ( moving in the direction from start point to end point, right is
positive, left is negative )
Note: From start point to end point must be CLOCKWISE. If you calculate by arc of
COUNTERCLOCKWISE, change SP for EP and calculate changed DI manually.
Output: new offset point
From the PowerTopoLite screen, press [F2][CALC] to view
the CALCULATION screen.
Select 1.COGO and press [ENT] to view the COGO screen.
Select the 9. ARC DISTANCE OFFSET and press [ENT] to
view ARC DISTANCE OFFSET screen.
Select 1. SP and press [ENT] to view SP screen.
OD
DI
New Offset Point
SP
EP
R
New Offset Point
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