The filling effect is incorrect.

[javalitterboy]

The filling effect of ANSI34 seems to be incorrect, but switching to a different device is normal. Is there any parameter that will affect it?

*ANSI34, ANSI 塑料和橡胶
45, 0,0, 0,.75
45, .176776695,0, 0,.75
45, .353553391,0, 0,.75
45, .530330086,0, 0,.75

0.75*100 = 75. 

1587.5 ？ why?

[j.palmeL29YX]

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@javalitterboy wrote:

*ANSI34, ANSI 塑料和橡胶
45, 0,0, 0,.75
45, .176776695,0, 0,.75
45, .353553391,0, 0,.75
45, .530330086,0, 0,.75

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This values are from the acad.pat, but you used an ACAD34 from acadiso.pat. 

Furthermore you picked the wrong lines. 

[cadffm · Accepted solution]

1. Your dimension is not from Line1 to Line1, it's measuring Line2 to Line1! (Ansi34 incl. 4 lines) - See my green circle..

2. The right Dimension is 1905.00

3. "0.75*100 = 75."
"1905.0 ？ why?"
Because this is not the hatch pattern definition on which the hatch is based, your "0.75" is wrong.

The right Pattern definition is:

*ANSI34, xxxxxxxxxxxxxxxxx
45, 0, 0, 0, 19.05
45, 4.49013, 0, 0, 19.05
45, 8.98026, 0, 0, 19.05
45, 13.4704, 0, 0, 19.05

What happen here?
If you start a new drawing, you have to decide

You have to decide if you will be working in metric or imperial units.

AutoCAD provides different pattern definitions for hatches and line types for imperial and metric files!

For lines you could change this later, but for hatches there is no easy solution, because hatch-pattern are independing from the source pattern definition, it is saved on each hatch separately - different to linetype definitions, whiyh are stored your drawing file.

so this is the first and most important consideration when starting a new file.

This file is designed for the metric system and is currently set to millimeters,

the hatch created here is based on the original definition from the
ACADISO.PAT (ACADISO.LIN for line types)

whereas your hatch pattern definition
is used for imperial files
and comes from the
ACAD.PAT (ACAD.LIN for line types).

Read [F1] about MEASUREMENT (decide of from where to load new pattern/linetypes)

and for new files, not based on a template, Measureinit