VARKON Version 1.15 1997-12-29

arc_3pos - Geometric

Creates an arc


Description

Creates a circular arc defined by three positions. The arc starts in the first position and turns anticlockwise through the second position and ends in the third position.

Syntax

arc_3pos(id, p1, p2 ,p3:attributes);

REF	id;
VECTOR	p1;
VECTOR	p2;
VECTOR	p3;

Principal parameters

id	- Local identity
p1	- Start position
p2	- Mid position
p3	- End position

Optional parameters

None.

Attributes

PEN	- Pen or colour number
LEVEL	- Level number
BLANK	- Visible(0) or invisible(1)
AFONT	- Solid(0), dashed(1) or centerline(2)
ADASHL	- Dashlength
WIDTH	- Linewidth

Comments

In a 3D module the resulting arc is restricted to the XY-plane of the active coordinate system. If any of the input positions are not in this plane they will be projected along the Z-axis onto the XY-plane before being used to create the arc. p1, p2 and p3 must not be identical or colinear.