topic Re: hatch define in ObjectARX Forum

hatch define

Anonymous — Thu, 16 Sep 2021 07:32:05 GMT

Open an existing PAT file or create a new file in a text editor that saves in ASCII format (for example, Notepad on Windows® or TextEdit on Mac OS®).
Note: If you are creating a new PAT file, the PAT file and pattern must have the same name.
Create a header line that begins with an asterisk and includes a pattern name that is no more than 31 characters in length.
For example, *ANGLE
Optionally, include a description for the hatch pattern by adding a comma and descriptive text after the pattern name.
For example, *ANGLE, Angle steel
Create a descriptor line that includes
- An angle at which the line is drawn
- An X,Y origin point
- A delta-x of any value if you want to offset alternating lines in the line family
- A delta-y of any value
- A value for a dash length
- A value for a dot length
- An optional second value for a different dash length
- An optional second value for a different dot length
For example, 0, 0,0, 0,.275, .2,-.075
Create a second line including all the parameters in the previous step.
For example, 90, 0,0, 0,.275, .2,-.075
Optionally, create additional lines to complete the multiple-line hatch pattern.
Add a blank line after the last descriptor line.
Note: If the blank line is missing, the hatch pattern won't be recognized by the program.

my question is
if
delta-x = 0
line angle = 90;

What is the algorithm for line tiling

Re: hatch define

hugha — Thu, 16 Sep 2021 11:27:22 GMT

DeltaX and deltaY are defined using coordinates that rotate with the line - so deltaX is always measured along the line and deltaY perpendicular to the line. Segment lengths are also measured along the line. The line angle and origin are unimportant.

Note that deltaY must not be zero.

hth,
Hugh Adamson
www.hatchkit.com.au

Re: hatch define

Anonymous — Fri, 17 Sep 2021 03:06:12 GMT

I am trying to achieve a similar filling effect

But don't know how to do it

Can you give me a general idea?

Re: hatch define

Anonymous — Fri, 17 Sep 2021 03:11:14 GMT

I am trying to achieve a similar filling effect

But don't know how to do it

Can you give me a general idea?

thanks bro