VARKON Version 1.15 1997-10-24

tform_mirr - Geometric procedure

Creates a transformation


Description

Creates a 2D or 3D mirroring transformation.

Syntax

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

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

Principal parameters

id	- Local identity
p1	- First position on mirror axis
p2	- Second position on mirror axis

Optional parameters

p3	- Third position. p1, p2 and p3 define the mirroring plane

Attributes

PEN	- Pen or colour number
LEVEL	- Level number
BLANK	- Visible(0) or invisible(1)

Example

tform_mirr(#1,vec(0,0),vec(1,0));

A mirror transformation in the XY-plane with the X-axis as mirror axis.

tform_mirr(#1,vec(0,0,0),vec(0,1,0),vec(0,0,1));

A mirror transformation with the YZ-plane as mirroring plane.

Comment

tform_mirr can be used in 2D and 3D but can not be used for scaling.