Arc圆弧

There are several EDAs which access the geometric properties of all arcs. Some of the EDAs are READ/WRITE, which means that the properties can be accessed and edited. Using EDAs in the edit mode can be a convenient method for making extensive changes. For example, you could write a program that would READ the radius of every arc in a part, and edit any .250 radii to .253, if press fits for that size hole were all replaced with slip fits.

The X, Y, and Z axis matrix values represent axes of the coordinate system of the arc. The arc lies in the X-Y plane, with the arc angle measured counterclockwise from the positive X axis.

Geometric Property

EDA Symbol

Access Type

Data Type

Center (X,Y,Z)

&CENTER(obj)

RW

Num. Array

Radius

&RADIUS(obj)

RW

Number

Start angle

&SANG(obj)

RW

Number

End angle

&EANG(obj)

RW

Number

Start point (X,Y,Z)

&SPOINT(obj)

RW

Num. Array

End point (X,Y,Z)

&EPOINT(obj)

RW

Num. Array

Arc length

&LENGTH(obj)

RO

Number

X axis matrix values

&XAXIS(ent)

RO

Num. Array

Y axis matrix values

&YAXIS(obj)

RO

Num. Array

Z axis matrix values

&ZAXIS(obj)

RO

Num. Array

Geometric Property	EDA Symbol	Access Type	Data Type
Center (X,Y,Z)	&CENTER(obj)	RW	Num. Array
Radius	&RADIUS(obj)	RW	Number
Start angle	&SANG(obj)	RW	Number
End angle	&EANG(obj)	RW	Number
Start point (X,Y,Z)	&SPOINT(obj)	RW	Num. Array
End point (X,Y,Z)	&EPOINT(obj)	RW	Num. Array
Arc length	&LENGTH(obj)	RO	Number
X axis matrix values	&XAXIS(ent)	RO	Num. Array
Y axis matrix values	&YAXIS(obj)	RO	Num. Array
Z axis matrix values	&ZAXIS(obj)	RO	Num. Array