2011

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
.5,.5 for the first instance of the pattern, so its origin is at this point. The third
line of the pattern could be the following:
90, .5,0, 0,1, .5,-.5
or
270, .5,1, 0,1, -.5,.5
The dashed pattern starts at the origin points and continues in the vector
direction given by the angle specification. Therefore, two dashed-line families
that are opposed 180 degrees are not alike. Two solid-line families are alike.
The following pattern creates six-pointed stars.
This example can help you refine your skills at pattern definition. (Hint: 0.866
is the sine of 60 degrees.)
The following is the AutoCAD definition of this pattern:
*STARS,Star of David
0, 0,0, 0,.866, .5,-.5
60, 0,0, 0,.866, .5,-.5
120, .25,.433, 0,.866, .5,-.5
To create a hatch pattern with multiple lines
1 Open the acad.pat or acadiso.pat file in a text editor that saves in ASCII
format (for example, Notepad).
2 Create a header line that includes an asterisk and a pattern name. The
name of the hatch pattern is limited to 31 characters.
3 (Optional) To include a description in the header line, follow the pattern
name with a comma and description text.
4 Create a descriptor line that includes
■ An angle at which the line is drawn
Hatch Patterns with Multiple Lines | 83