Detailed Description

This enumeration defines the orientation associated to a transformation object.

Orientation codes and associated transformation matrix
Name	Code	Signification	a	b	c	d
ID	0	Identity	1	0	0	1
R1	1	Simple rotation (90°)	0	-1	1	0
R2	2	Double rotation (180°)	-1	0	0	-1
R3	3	Triple rotation (270°)	0	1	-1	0
MX	4	Horizontal symetry (Mirror X)	-1	0	0	1
XR	5	Horizontal symetry followed by a 90° rotation	0	-1	-1	0
MY	6	Vertical symetry (Mirror Y)	1	0	0	-1
YR	7	Vertical symetry followed by a 90° rotation	0	1	1	0

The transformation formula is given by:

$\‍[ \Large \left \{ \begin{array}{r c l l l l l} x' & = & (a \times x) & + & (b \times y) & + & tx \\ y' & = & (c \times x) & + & (d \times y) & + & ty \end{array} \right . \‍]$

where x and y are the coordinates of any point, x' and y' the coordinates of the transformed point, tx and ty the horizontal and vertical components of the translation and where a, b, c and d are the coefficients of the matrix associated to the orientation.

The documentation for this class was generated from the following file:

Transformation.h

Hurricane VLSI Database

Detailed Description