Export error?

[Chopisland]

Hello,

does anyone have any idea what the problem might be if i export a figure with a diameter of, say, 20mm, but in the 3D program it is approx. 600mm in size? I don't have this problem with inkscape. if it is created as 20mm there, it is also imported as 20mm in the 3D program.

 

Thank you in advance

[GarryP]

Welcome to the forums @Chopisland

I’m guessing that this might have something to do with DPI, or similar, but it’s difficult to tell.
If you can supply the exact dimensions in each case then someone can do the relevant maths and try and figure it out.

If you can also supply the original Affinity file and your exported image then that would probably help more (but you don't need to do that if it's private).

[R C-R]

6 hours ago, Chopisland said:

does anyone have any idea what the problem might be if i export a figure with a diameter of, say, 20mm, but in the 3D program it is approx. 600mm in size?

What file format are you exporting to? What 3D app are you using? What file type(s) does it accept for imports, & what kind of object does a 2D file like you can export from Affinity import as? Is it for 'painting' a surface texture onto a 3D object, a flat shape intended as the basis of an extrusion, or what?

[Chopisland]

What file format are you exporting to?

SVG

What 3D app are you using?

Freecad

What file type(s) does it accept for imports, & what kind of object does a 2D file like you can export from Affinity import as?

quite a lot, but only svg is relevant because i need the path for extruding

Is it for 'painting' a surface texture onto a 3D object, a flat shape intended as the basis of an extrusion, or what?

See last answer

[Chopisland]

Hello Garry,

the exact size of the Affinity file is 24,3mm and now it is 196,52mm.

Somehow strange and different from the first statement, but also completely wrong.

The file is in the attachment.

Affinity Klunkerkiste 24,3mm.svg

[v_kyr]

7 hours ago, Chopisland said:

...does anyone have any idea what the problem might be if i export a figure with a diameter of, say, 20mm, but in the 3D program it is approx. 600mm in size? I don't have this problem with inkscape. if it is created as 20mm there, it is also imported as 20mm in the 3D program.

Depends on the way the exported SVG code will be generated here, aka if using SVG "width=100% height=100%" vs width="2481" height="3508" together with the viewBox="0 0 2481 3508" setting. - Note that when you specify a unit (like using mm) in/for SVG, it must first be scaled to pixels by multiplying by the number of pixels. In your case per mm where 1 mm is about 3.78 pixels. Further note that an SVG viewBox is effectively a transformation (some combination of a scaling and a translation).

You can setup and control the SVG export options via the "more" button, further also inspect and edit the exported SVG code inside a plain text editor.

• Klunkerkiste.svg
• Klunkerkiste3.svg

[Chopisland]

Thank you very much v_kyr. You have put me on the right way.

Now it works, even though i didn't understand your answer 100%. But maybe i'll have an epiphany at some point.

[v_kyr]

4 hours ago, Chopisland said:

... even though i didn't understand your answer 100%. But maybe i'll have an epiphany at some point.

Maybe the following articles about SVG viewport & viewBox give you a little bit more insight ....

• SVG Viewport and viewBox (For Complete Beginners)
• How to scale SVG
• Understanding SVG Coordinate Systems and Transformations (part 1)
• Why Your SVG Is the Way It Is