Hatch Background Color in a DXF file

[Anonymous]

Hi, I'm developing a C# project that exports drawings to DXF. I have almost finished it, but I cannot figure out how to set the background color of a Hatch entity. As I see in some sample DXF files, the background color looks like:

1001

HATCHBACKGROUNDCOLOR

1071

-1023410174

So it's some kind of extended data and the number "-1023410174" corresponds to yellow background color. But how is it calculated? I'll be very gratefuul if someone can help me with this 🙂

Best Regards,

Pavel

[mendesva]

Have a look at this topic.

Hope it will help.

[mendesva · Accepted solution]

Sorry, forgot to paste the link...

http://www.theswamp.org/index.php?topic=35274.0

[Anonymous]

That's great! Thank you very much, mendesva. I've got it now and my project is finally completed 🙂

Best Regards,
Pavel