In T76736#931305, @Philipp Oeser (lichtwerk) wrote:

Just a first stab in the dark:

Does it help to specifiy encoding? Changing it "by hand" to

<?xml version="1.0" encoding="UTF-8" standalone="no"?>

or

<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>

Does the import in other software work then?

Nope.
e.g. my blender file name is "你好测试.blender" ("Hello test.blender" in English), when I export uv map as svg, other programs wouldn't recognize it. When open that svg file in text editor, note the 6th line goes:

<desc>ÄãºÃ²âÊÔ.blend, (Blender 2.90 (sub 1))</desc>

It's these Chinese charator being wrongly encoded to some weird unicode. I guess some tweaks in the svg export python script would solve the issue. Though I could manually fix this issue using text editor, I thought maybe the developer could solve the inconvience once for all CJK language users.

Maybe a misunderstanding, what I meant is changing the first line in the svg file in a text editor and save, have you tried that?
(your first line still shows as <?xml version="1.0" standalone="no"?> -- no encoding specified...)

No.1

Here the average value for all vertices, some vertices are overlaid.

For example:

( 0.5 + 0.5 + 0.5 + 0.25 + 0.25 + 0.0 ) / 6 = 0.333

I have no problems with exporting svg and then opening it in Affinity Designer.

In T76736#931357, @Yevgeny Makarov (jenkm) wrote:

No.1

Here the average value for all vertices, some vertices are overlaid.

For example:

( 0.5 + 0.5 + 0.5 + 0.25 + 0.25 + 0.0 ) / 6 = 0.333

Thank you! If I don't misunderstand what you said, when I don't rip apart the uv faces, the uv points are just overlaping each other like this:

However, this agorithom is kind unintuitive to artist, especially for those who are used to 2D programs that thinks and manipulates things in 2D space.
I highly suggest we offer a choice to change this calc behavier!

In T76736#931360, @Yevgeny Makarov (jenkm) wrote:

I have no problems with exporting svg and then opening it in Affinity Designer.

Why? How did you make that happen?

In T76736#931360, @Yevgeny Makarov (jenkm) wrote:

I have no problems with exporting svg and then opening it in Affinity Designer.

Oh, I think I figured it out! Maybe it's be i18n thing. Can I see your translation config in Blender preference?
This is mine:

I use English, but I also tried switching to others.

Try "Load Factory Preferences" and then export.

In T76736#931407, @Yevgeny Makarov (jenkm) wrote:

I use English, but I also tried switching to others.

Try "Load Factory Preferences" and then export.

I was using automatic, and basically automatic is the same as English. I tried switch to English, that didn't work either.
Then I tried export after Load Factory Preferences, failed again.
BTW, thanks for your patience!

In T76736#942610, @Campbell Barton (campbellbarton) wrote:

Please include the generated SVG, when I export this file on Linux I get the file name working properly:

Suzanne.svg477 BDownload

Here's the svg I exported from
Blender 2.90.3 Alpha
Hash: 86fa8dc7f73a

If you type this into the Python console, does it display the file path properly?

bpy.data.filepath

(press Enter).

I see:

PYTHON INTERACTIVE CONSOLE 3.8.3 (default, May 17 2020, 18:15:42)  [GCC 10.1.0]

Builtin Modules:       bpy, bpy.data, bpy.ops, bpy.props, bpy.types, bpy.context, bpy.utils, bgl, blf, mathutils
Convenience Imports:   from mathutils import *; from math import *
Convenience Variables: C = bpy.context, D = bpy.data

>>> bpy.data.filepath
'/d/你好测试.blend'

>>>

It returns:

>>> bpy.data.filepath
'C:\\Users\\jiabaoyu\\Desktop\\你好测试.blend'

Good job Campbell!
Could you please check the other issue I posted ;)

@baoyu (baoyu) Blender uses the median center for coordinates, this is working as intended, we could support this but it's not something we use the bug tracker for.

@Campbell Barton (campbellbarton) Thanks! I was trying to implement that feature by making a addon, though my python skill is on a low level and I can't find default api for manipulating UV coordinate :(