iPOGO V5 Users Group - Help Manual

*Methodology*
Command:	13
Alpha Alias:	Fillets
Description:	Sets points on street fillets
Data Format:	13 Set Widths Radius CL-Defined {[Set CL-Defined]... };
Problem:	Given points on tangent centerlines 6, 7, 8 and 9; radius point 5; street widths of 60 feet and 50 feet; and a fillet radius length of 25 feet; set the radius point, PC and PT of the fillets as shown.
Solution:	13 1 60,50 25 5 7 6 10 9 7 8 ;

Data Description

Command	13	Computes the Radius Point (RP), Point of Curvature (PC) and Point of Tangency (PT) of the fillet for almost every fillet condition. The centerline radius points must have been computed using the 11 command or stored using the 14 command. Note: The only fillet condition that is not computed is when a curved centerline passes through the centerline intersection but does not extend past the fillet. In this case, a dummy intersection point must be computed on the tangents and is used in place of the true intersection.
Set	1	Point number assigned to the fillet's radius point. The fillet PC and PT are computed and automatically numbered in order.
Widths	60, 50	Consists of two entries indicating the street widths. They must be entered clockwise around each fillet.
Radius	25	Radius of the fillet.
CL-Defined	5, 7, 6	Consists of three values which define the intersecting centerlines for each fillet. These three values are determined as follows. If the centerlines are tangent in the vicinity of the required fillet, the points on centerline are entered as follows: 1st point lies on the tangent directed toward the centerline intersection as the fillet is turned clockwise. 2nd point is the previously set point of intersection of the centerlines. 3rd point lies on the centerline directed away from the centerline intersection as the fillet is turned clockwise. If the centerlines are curved in the vicinity of the required fillet, the centerline is defined as follows: 1st point is the radius point of the curve directed toward the centerline intersection as the fillet is turned clockwise. 2nd point is the previously set point of intersection of the centerlines. 3rd point is the radius point of the centerline curve which is directed away from the centerline intersection as the fillet is turned clockwise. Note: If the centerline deflects to the right, the point number is entered as a positive value. If the centerline deflects to the left, the point number is entered as a negative value. If a curved centerline intersects a tangent centerline, the centerline is defined as follows: 1st point is the radius point of the curved centerline directed toward the centerline intersection as the fillet is turned clockwise. 2nd point is the previously set point of intersection of the centerlines. 3rd point is a point that lies on the tangent centerline directed away from the centerline intersection as the fillet is turned clockwise. If a tangent centerline intersects a curved centerline, the centerline is defined as follows: 1st point is a point that lies on the tangent centerline directed toward the centerline intersection as the fillet is turned clockwise. 2nd point is the previously set point of intersection of the centerlines. 3rd point is the radius point of the curved centerline which is directed away from the centerline intersection as the fillet is turned clockwise.
{[Set CL-Defined]... }	10 9, 7, 8	Repeating feature of the 13 command. Additional fillets can be computed by entering a new point number for the new radius fillet and point numbers defining the centerlines of the streets intersecting to form the new fillet. The radius of the fillet must be identical with the previously entered radius. The intersecting streets must also have the same right-of-way width and be defined in the same order as was previously entered.
End Command	;	All commands end with a semi-colon.

Example Command File

$ Example data set for the 13 (FILLETS) command.

$ Set the initial points.
  0 6 1000 1000 ;
  1 7 6 -1 45 0 0 200 -1 45 0 0 200 ;
  1 9 7 -2 45 0 0 200 ;
  1 1000 7 9 7 30 ;
  1 5 1000 -3 45 0 0 125 ;

$ Note define point 5 as a radius point.
  14 5 125 ;

$ set the first pair of fillets 
$    with the 13 command.
  13 1 60 50 25 5 7 6 10 9 7 8 ;

$ set the second pair of fillets.
  13 2000 50 60 25 6 7 9 2010 8 7 -5 ;

$ set additional points for plotting
   2 1001 5 5 1000 -45 0 0 125 ;
  -2 1002 5 5 1000 -45 0 0 95 -45 0 0 155 ;
  -1 1005 6 7 9 25 9 7 25 ;
  -1 1007 8 7 9 25 9 7 25 ;
  -1 1010 9 6 7 30 7 6 30 ;


$ Setup feature codes with 
$  cmd  feature, layer, color, style, thickness
   15.1   CL      CL      7      1       1 ;
   15.1   RW      RW      3      1       1 ;

$ turn plotting on
91;

$ activate feature code

15 CL;
   100 Centerline street;
       7 1 6 8 ;
       7 2 9 7 1000 5.1 1001 ;

15 RW;

   100 right-of-way;
       7 1 1010 11 10.1 12 1007 ;
       7 1 1008 2011 2010.1 2012 5.1 1003 ;
       7 1 1011 2002 2000.1 2001 1005 ;
       7 1 1006 3 1.1 2 5.1 1002 ;

Help for this command was last updated: 06/27/2000 11:37:23 PM

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Group:Command:

13) Fillets13 or Fillets

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Command:

13) Fillets
13 or Fillets