Offset Center Point

Synopsis

There are three formats for this statement:

Format 1

obj = CLINE/OFFCPT,{XCAXIS|YCAXIS},CENTER,obj1,[VIEW,'View Name',]arc[,VIEW,'View Name']

Format 2

obj = CLINE/OFFCPT,{XCAXIS|YCAXIS},DSTCTR,num,arc[,VIEW,'View Name']

Format 3

obj = CLINE/OFFCPT,{XCAXIS|YCAXIS},DSTNRM,num,arc[,VIEW,'View Name']

Description

Creates an offset center point object. The offset center point can be placed either on the XC axis (horizontal), or on the YC axis (vertical). The offset center point lies in the X-Y plane of the work coordinate system. There are three different methods to define the offset: 1) By specifying an existing point, arc center, or offset centerpoint. 2) By specifying a distance from the arc center. 3) By specifying a distance from the arc normal.

Parameters

Parameter

Description

OFFCPT

Minor word that causes an offset center point to be created.

XCAXIS

Minor word to indicate that the offset center point is to be placed on the horizontal or XC axis.

YCAXIS

Minor word to indicate that the offset center point is to be placed on the vertical or YC axis.

CENTER

Minor word to indicate that the offset center point is offset from the arc center by a distance that is calculated from the arc center to a point position. The point position is the location of a previously defined object, obj1.

DSTCTR

Minor word to indicate that the offset center point is offset from the arc center by the specified offset distance, num.

DSTNRM

Minor word to indicate that the offset center point is offset from the arc normal (edge of the arc) toward the arc center by the specified offset distance, num.

VIEW

Minor word that indicates that a view name is to follow.

'View Name'

This is a string variable or literal that is the view name.

num

A real number variable which is the specified offset distance. When this is used with the minor word DSTCTR, num is the distance offset from the center of the arc towards the arc.

Format 1

obj = CLINE/OFFCPT,{XCAXIS|YCAXIS},CENTER,obj1
,[VIEW,'View Name',]arc[,VIEW,'View Name']

In this format, obj1 can be a point or an arc object. It defines the point position used for calculating the offset distance value. If obj1 is an arc, the position used for calculation is the arc center. The object arc defines the arc for the offset center point.

Offset Center Point, Define the Offset

The Figure above defines the offset center point created using Format 1 of the CLINE/OFFCPT statement with minor words YCAXIS and CENTER. In this example obj1 defines the offset centerpoint. Note that the radial dimension of 12.00 automatically takes into account that the offset center point represents the true center of the arc.

Format 2 and Format 3

obj = CLINE/OFFCPT,{XCAXIS|YCAXIS},DSTCTR,num,arc
[,VIEW,'View Name']

and

obj = CLINE/OFFCPT,{XCAXIS|YCAXIS},DSTNRM,num,arc
[,VIEW,'View Name']

The object arc defines the arc for the offset center point.

Offset Center Point, Vertical Distance from Arc

The Figure above the offset center point distance is created using Format 2 of the CLINE/OFFCPT statement with minor words YCAXIS and DSTCTR. In this example, the offset center point is offset from the true arc center by a distance of 6.00. Note that the radial dimension of 12.00 automatically takes into account that the offset center point represents the true center of the arc.

When it is used with the minor word, DSTNRM, num is the distance offset from the arc normal towards the center of the arc.

Offset Center Point, Vertical Distance

In Figure 1-13 the offset center point is created using Format 3 of the CLINE/OFFCPT statement with minor words YCAXIS and DSTNRM. In this example, the offset centerpoint is offset from the arc normal (edge of the arc) toward the arc center by a distance of 1.00 inch. Note that the radial dimension of 12.00 automatically takes into account that the offset center point represents the true center of the arc.

Parameter	Description
OFFCPT	Minor word that causes an offset center point to be created.
XCAXIS	Minor word to indicate that the offset center point is to be placed on the horizontal or XC axis.
YCAXIS	Minor word to indicate that the offset center point is to be placed on the vertical or YC axis.
CENTER	Minor word to indicate that the offset center point is offset from the arc center by a distance that is calculated from the arc center to a point position. The point position is the location of a previously defined object, obj1.
DSTCTR	Minor word to indicate that the offset center point is offset from the arc center by the specified offset distance, num.
DSTNRM	Minor word to indicate that the offset center point is offset from the arc normal (edge of the arc) toward the arc center by the specified offset distance, num.
VIEW	Minor word that indicates that a view name is to follow.
'View Name'	This is a string variable or literal that is the view name.
num	A real number variable which is the specified offset distance. When this is used with the minor word DSTCTR, num is the distance offset from the center of the arc towards the arc.