INSERT ORTHOGONAL CORNER (InsOrc)

Type: Interactive Application

Inserts an orthogonal line in which results in a squared polygon based on the first two points read and subsequent polygon corner points. The line may be closed back to the original line segment or left open. Each squared polygon is started by reading two corner points along one side of the polygon. This is normally the longest or most visible side. Subsequent points are read on polygon corners. The polygon must be read in a clockwise or counterclockwise direction from the base line.

A Squaring Tolerance may be specified. If the next corner point is within this tolerance the resulting line will be orthogonal to the original line segment. If the next corner point is outside this tolerance then the the line point will fall where digitized resulting in an un-squared side. Each corner point my turn 0, 90, 180 or 270 degrees from the previous segment. If a corner point is 0 degrees from the previous line segment then the new line will be a straight line from the previous line.

While digitizing, a rubber-banded line will show the direction and location of the next point. If the current cursor position is within the Squaring Tolerance then the line will be shown orthogonal to the first line on the polygon.

There are three polygon squaring applications in Vr. See Insert Square Polygon (InsSqu) and Insert Orthogonal Line (InsOrt) for more information about the other two available polygon squaring applications.

Local Commands

Key-in	Description	Range
LAY=	Layer number	1-10001
MOD=	Mode	1=Line 2=Spline
GRP=	Graphic pointer	1-60
WID=	Line width	0-255
PEN=	Pen number	1-256
CON=	Construction flag	0-1
NGR=	Non graphic pointer	32 bit
LNK=	Link number	32 bit
FC=	Feature code	15 char
DIG=x y z	Digitizes point	X Y Z
FKEY=name	Changes to function key parameters	Function key name
SQUTOL=	Sets the Squaring Tolerance	5 - 40 degrees

Button Assignments

Ins Orthog Cor - Main

Button	Description
1 Dig	corner 1 – Digitize the first corner point of the base line. corner 2 – Digitize the second corner point of the base line corner – Digitize a point on the next polygon corner
2 Close	Closes the polygon to the first vertex and saves
3 Backup	Deletes the last point on the current line
4 End	Ends and saves the current line without closing
5
6
7
8
9
* Menu board	Makes selection from Menu Board
0 Toggle snap	Toggles snapping on / off
# End	Ends Insert Orthogonal Corner

Point Measurement Sequence

Points 1 and 2 are used to define the base line and are read on the corners longest side in this example. These points must be read on the corners and are used to establish the azimuth of the squared polygon. Points 3 through 6 are observed on subsequent polygon corners. The polygon may be read in clockwise or counterclockwise direction and corners must be read in sequential order. After point 6 has been read the polygon may be closed. NOTE: When closing a polygon the last point observed, point 6 in this case, is adjusted to be orthogonal with the first point observed if it is within the Squaring Tolerance.

Vr Button Presses

The observation of the base line and the subsequent polygon corners are made with the Vr button 1. To close the polygon after the final line corner has been observed Vr button 2 is pressed. Note the last line corner must be observed before Vr button 2 can be pressed. To leave a polygon open Vr button 4 may be pressed.