AutoCAD 2004/2005/2006

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Distinguished Contributor
jshiel
Posts: 344
Registered: ‎05-06-2005
Message 1 of 6 (1,396 Views)

Grass Hatch

1396 Views, 5 Replies
05-25-2006 12:46 AM
Hi all

I am having problems hatching grass, instead of the normal hatch pattern ie a v with a line in the centre, the v and the line are seperate so the hatch doesn't look like grass I have tried a new boundary but the I still have the same problem, any help would be good

Kind Regards

Jeanette
*Hugh Adamson
Message 2 of 6 (1,396 Views)

Re: Grass Hatch

05-25-2006 02:12 AM in reply to: jshiel
2006 has Hatchedit functionality to set the hatch origin to compensate for a
precision problem in the hatch pattern definition.that shows up with large
drawing coordinates.

Moving the hatch origin closer to the misbehaving hatch is one way to
correct the problem.

Improving the hatch pattern's definition precision is another.

www.cadro.com.au/hatchkit/

--
Hugh Adamson
Cadro Pty Ltd
www.cadro.com.au
Distinguished Contributor
jshiel
Posts: 344
Registered: ‎05-06-2005
Message 3 of 6 (1,396 Views)

Re: Grass Hatch

05-25-2006 02:24 AM in reply to: jshiel
Hiya Hugh

I am unclear what to do with regard to hatch origin can you help further?
Distinguished Mentor
scottbolton
Posts: 636
Registered: ‎08-30-2005
Message 4 of 6 (1,396 Views)

Re: Grass Hatch

05-25-2006 09:15 AM in reply to: jshiel
Jeanette,

Change the UCS origin to somewhere near the bottom left of your grass area. Hatch the area then change back to World UCS. The grass will look fine.

S
*Hugh Adamson
Message 5 of 6 (1,396 Views)

Re: Grass Hatch

05-25-2006 06:55 PM in reply to: jshiel
Jeanette,

This shows the functionality that appeared with 2006 - read the portion
following

"AutoCAD 2006 - Hatching ( in more detail) ...
And my favorite new change - you can specify the origin of your
crosshatching" in

http://lynn.blogs.com/lynn_allens_blog/2005/03/index.html

In earlier versions of AutoCAD you would adjust SNAPBASE or even move the
UCS before rehatching the problem area.

The problem arises because numerical roundoff errors accumulate and alter
the relative position of the lines comprising the pattern at locations where
a large number of repetitions of the pattern lie between the hatched area
and the hatch origin. Moving the hatch origin closer to the hatched area can
improve the hatch appearance by reducing the accumulated error but a more
general fix is to improve the precision within the hatch pattern's original
definition.


--
Hugh Adamson
Cadro Pty Ltd
www.cadro.com.au/hatchkit/
Distinguished Contributor
jshiel
Posts: 344
Registered: ‎05-06-2005
Message 6 of 6 (1,396 Views)

Re: Grass Hatch

05-26-2006 12:37 AM in reply to: jshiel
Morning Scott, Hugh

Thanks for your help that has worked fine.

Jeanette.

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