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i
For types 3 and 4:
. The line spacing is given in current units and is measured along the x-
axis. A zero value gives a solid fill and a negative value invalidates the
command. The default value is 1% of the distance Pl to P2. If the
current units are plotter units, turning scaling on or moving Pl and P2
has no effect on the spacing. If user units are used, the spacing varies
as Pl and P2 ate moved; turning scaling off fixes the spacing in the
plotter unit equivalent to the current user unit.
l The line angle is measured counterclockwise from the positive x-axis.
In cross-hatching, the two set of lines are at 90”.
l The lines are drawn using the current pen, line type and line cap?
For type 10, the shading level is expressed as a percentage of black; 0 is white,
100 is black
For type 11, the fill index is as specified in command RF; if an RF command
has not been given, solid fill is used.
For type 2 1, the pattern type is a number between 1 and 6, corresponding to
the patterns defined in the standard emulation mode.
If any parameter or combination is outside the values in the table, the
command is ignored.
IN (initialize)
This command resets the parameters to their default values. It also sets the
current position to the origin of the coordinate system (the lower left comer
of the picture frame).
IP (input Pl and P2) ([Plx, Ply [lower left comer of picture frame) [,P2x,
P2y (upper right comer of picture frame)]])
This command sets control points Pl and P2. If Pl is defined but not P2, P2
tracks Pl to maintain the same relative position.
This command affects scaling and all commands which defme a size as a
percentage of the distance between Pl and P2.
The results of the following commands depend on the positions of Pl and P2:
DR, IT, IW, LB, LT, PW, RO, SC, SR, WU.
IR (input relative) ([Plrx, Plry (0,O) [,P2rx, P2ry { lOO,lOO)]])
See IP. This is the same, except that the coordinates of points Pl and P2 are
expressed as percentage of the width (height) of the picture frame.
, IW (input window) ([xll, yll, xur, yur (picture frame limits]])
Xll: x-coordinate of lower left comer of soft-clip window
yll: y-coordinate f 1 o ower left comer of soft-clip window
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