II.4.7 - SCALING FACTOR AND CELL MAPPING :
(see Figures 9 and 10)
15 14 13 12 11 10
9
8
SX
SY
SX or SY
S
1
2
15
16
0
0
1
0
0
0
1
0
0
1
1
0
1
0
1
0
R1
68483-11.EPS
Figure 9 : Scaling Factor
Y
X
DYs > 0
DXs > 0
Xs, Ys
Y
X
DYd > 0
DXd > 0
Xd, Yd
Y
X
DYd < 0
DXd > 0
Xd, Yd
Y
X
DYs < 0
DXs > 0
Xs, Ys
Y
X
DYd > 0
DXd > 0
Xd, Yd
Y
X
DYd < 0
DXd > 0
Xd, Yd
68483-12.EPS
Figure 10 : Cell Mapping versus DYd, DYs SIGN
Any cell may be printed with a scaling factor.
This scaling factor is an integer pair Sx, Sy = 1
to 16. This scaling factor is interpreted with the
PRINT CHARACTER, PRINT OBJECT and LIN-
EAR commands when the pen is a cell. The AREA
or ACCESS or LINEAR (DOT) commands are
never scaled.
The LINEAR (PEN) command should be used with
a scaling factor of 1 because the pen is clipped at
DXs, DYs.
The scaling factor is first applied to the source cell
before mapping and drawing. The drawing and
mapping is processed with sign bit of DYd and DYs
values (see Figure 10).
Notes :
- DXs is always positive
- The DYs sign mirrors the cell
- DXd must be positive with a PRINT CELL com-
mand
- DXd and DYd may get any sign with a LINEAR
DRAWING command. If a pen is used, these
signs are then irrelevant to the pen drawing. The
pen is mapped with positive increment values.
TS68483A
11/30
