topic Because the FIRST hatch pattern issue was not enough in AutoCAD Forum

Because the FIRST hatch pattern issue was not enough

bwhisenhunt — Mon, 16 May 2016 12:52:07 GMT

I have what will probably be a simple issue that I have not been able to figure out on a custom hatch. I worked from an example to create a new wall tile pattern that uses a 4" x 16" tile with a 1:3 stagger. I've gotten the pattern to the 4x16, but I can't figure what I have to do to make it stagger 1/3 of the tile length (5.33"). Below is my file:

*SHOWERTILE_4x16, Shower Tile 4x16 1:3 stagger
0, 0,0, 0,4
90, 5.33,0, 4,-4, 4,-12

What I keep getting though is a 4" stagger. I know this is something simple, but I'm still trying to get this hatch writing thing correct in my head and I have attempted altering all the variables and this has been the closest I've come to the desired effect.

Re: Because the FIRST hatch pattern issue was not enough

Kent1Cooper — Mon, 16 May 2016 13:07:41 GMT

@bwhisenhunt wrote:

... 4" x 16" tile with a 1:3 stagger. ... to make it stagger 1/3 of the tile length (5.33"). ....

*SHOWERTILE_4x16, Shower Tile 4x16 1:3 stagger
0, 0,0, 0,4
90, 5.33,0, 4,-4, 4,-12

What I keep getting though is a 4" stagger. ....

The same issue that's been mentioned is probably tripping you up -- keeping in mind that the XY offsets are in relation to the lineset's angle. That means you want the 5.33 in the Y direction relative to the 90-degree direction. Try this [untested]:

*SHOWERTILE_4x16, Shower Tile 4x16 1:3 stagger
0, 0,0, 0,4
90, 5.33333,0, 4,-5.33333, 4,-12

[I increased the number of decimal places, because with fewer, you may find the pattern gets slightly off as you get farther from the origin. But depending on how you use it, that may not be an issue, and you may be able to use fewer without noticing any irregularity.]

Re: Because the FIRST hatch pattern issue was not enough

bwhisenhunt — Mon, 16 May 2016 15:34:09 GMT

That helped, I found I needed to change the Delta-Y as well. So this is what worked:

0, 0,0, 0,4
90, 0,0, 4,-5.3333, 4,-8

Re: Because the FIRST hatch pattern issue was not enough

Kent1Cooper — Mon, 16 May 2016 17:45:24 GMT

@bwhisenhunt wrote:
That helped, I found I needed to change the Delta-Y as well. So this is what worked:

0, 0,0, 0,4
90, 0,0, 4,-5.3333, 4,-8

You mean the pen-up portion [the Delta-Y is the part I changed]. And yes, of course, with the different stagger, there are a different number of tiles to cross over before arriving at another joint in the same line -- I might have realized that if I'd thought it through more thoroughly, or [what a concept!] actually tested it.