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Is there a way to "fix" the length of a line when "curving" it?


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For example, if a straight line is 10" long and I want to curve it into a shape that maintains that 10", is there a way to do that?  The end nodes will need to move of course, but the key factor is to maintain the overall line length.  I know we can draw a curve and then measure it, but I'm wanting to start with the length I want, and then shape the curve.  Is this possible?  Thanks!

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2 hours ago, GarryP said:

If the end nodes of the curve were to "move", how would the software know how/where to "move" them?

Sounds like a complex job and relates more to 3D simulation.

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Hi @Marc L. I believe that in French, "L" stands for both "Largeur" and "Longueur" (Width and Length)? If I follow your example in the UK English version, I see this in the Transformation Panel:

1605132980_Screenshot2022-12-07at11_38_56.png.e625dfb27fb5877d3d5ed5116ffa569f.png

 

is the width of the bounding box.

I'm not great at geometry, but I'm pretty certain that the resulting line is more than 100mm long. Seems like a misleading interface issue in the French version - maybe should be "La" and "Lo" for clarity? 

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8 minutes ago, h_d said:

Salut@Marc L. Je crois qu'en français, « L » signifie à la fois « L argeur » et « L ongueur » ( largeur et  longueur) ? Si je suis votre exemple dans la version anglaise du Royaume-Uni, je vois ceci dans le panneau de transformation :

1605132980_Capture d'écran2022-12-07at11_38_56.png.e625dfb27fb5877d3d5ed5116ffa569f.png

 

est la largeur de la boîte englobante.

Je ne suis pas doué en géométrie, mais je suis à peu près certain que la ligne résultante mesure plus de 100 mm de long. Cela ressemble à un problème d'interface trompeur dans la version française - peut-être devrait-il être " La " et " Lo " pour plus de clarté ? 

Hello, so I didn't quite understand the initial question 😉 It is of course the bounding box in my example ! 

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9 hours ago, PixelPest said:

Inkscape can via "Pattern along Path"=single interactively.

Can you demo. Path effects are an interesting feature in Inkscape, and this specific effect seems to have quite versatile uses (checked a couple shown on YouTube). I could not however produce this kind of an interactive task so it would be great if you could show!

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I've shown that several times. Not on my Mac right now - but I can link to a Gif I once made, which shows the result:

Maintain Path length

left is the original Path and on the right it's placed as single pattern along a path which you can alter and the pattern will follow accordingly.

If there's anything else regarding Inkscape let me know.

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