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Hatch Patterns with Multiple Lines
Complex hatch patterns can have an origin that passes through offsets from
the origin and can have multiple members in the line family.
Not all hatch patterns use origin points of 0,0. Complex hatch patterns can
have an origin that passes through offsets from the origin and can have
multiple members in the line family. In composing more complex patterns,
you need to carefully specify the starting point, offsets, and dash pattern of
each line family to form the hatch pattern correctly.
The hatch pattern AR-B816 shown in the Boundary Hatch and Fill dialog box
looks like this:
and is defined as follows with multiple lines describing the pattern:
*AR-B816, 8x16 Block elevation stretcher bond
0, 0,0, 0,8
90, 0,0, 8,8, 8,-8
The following figure illustrates a squared-off, inverted-U pattern (one line up,
one over, and one down). The pattern repeats every one unit, and each unit
is 0.5 high and wide.
This pattern would be defined as follows:
*IUS,Inverted U's
90, 0,0, 0,1, .5,-.5
0, 0,.5, 0,1, .5,-.5
270, .5,.5, 0,1, .5,-.5
The first line (the up bar) is a simple dashed line with 0,0 origin. The second
line (the top bar) should begin at the end of the up bar, so its origin is 0,.5.
The third line (the down bar) must start at the end of the top bar, which is at
34 | Chapter 3 Custom Hatch Patterns