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To define dashed-line patterns, you append dash-length items to the end of the line definition item.
To define dashed-line patterns, you append dash-length items to the end of the line definition item. Each dash-length item specifies the length of a segment making up the line. If the length is positive, a pen-down segment is drawn. If the length is negative, the segment is pen-up, and it is not drawn. The pattern starts at the origin point with the first segment and cycles through the segments in circular fashion. A dash length of 0 draws a dot. You can specify up to six dash lengths per pattern line.
The hatch pattern ANSI33, shown in the Boundary Hatch and Fill dialog box, looks like this:
*ANSI33, ANSI Bronze, Brass, Copper
45, .176776695,0, 0,.25, .125,-.0625
For example, to modify a pattern for 45-degree lines to draw dashed lines with a dash length of 0.5 units and a space between dashes of 0.5 units, the line definition would be
*DASH45, Dashed lines at 45 degrees
45, 0,0, 0,.5, .5,-.5
This is the same as the 45-degree pattern shown in Overview of Hatch Pattern Definitions, but with a dash specification added to the end. The pen-down length is 0.5 units, and the pen-up length is 0.5, meeting the stated objectives. If you wanted to draw a 0.5-unit dash, a 0.25-unit space, a dot, and a 0.25-unit space before the next dash, the definition would be
*DDOT45,Dash-dot-dash pattern: 45 degrees
45, 0,0, 0,.5, .5,-.25, 0,-.25
The following example shows the effect of delta-x specifications on dashed-line families. First, consider the following definition:
*GOSTAK
0, 0,0, 0,.5, .5,-.5
This draws a family of lines separated by 0.5, with each line broken equally into dashes and spaces. Because delta-x is zero, the dashes in each family member line up. An area hatched with this pattern would look like this:
*SKEWED
0, 0,0, .5,.5, .5,-.5
It is the same, except that you have set delta-x to 0.5. This offsets each successive family member by 0.5 in the direction of the line (in this case, parallel to the X axis). Because the lines are infinite, the dash pattern slides down the specified amount. The hatched area would look like this:
