<div dir="ltr">Thank you Nathaniel and otfried, that is very helpful. <div>I already used svgtoipe to convert some Tikz generated spring to ipe (see attached files). <div>It is also very interesting to know that tikz could be used within Ipe, however my aim to use ipe is to avoid Tikz which save me time and effort. Tikz is powerful and I already use it for some nice drawing but, compared to tools like inkscape and ipe, it requires more time to learn. Thus I keep it for some other types of drawings. </div></div><div><br></div><div>Writing an Ipelet is the best thing to do in my case, unfortunately, one needs to learn Lua, maybe when I find more time and be more confident with ipe !!!!</div><div><br></div><div>Hemza</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 18 Feb 2021 at 15:37, Nathaniel Cunningham <<a href="mailto:nathaniel.cunningham@gmail.com">nathaniel.cunningham@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>p.s. this parametric plotting approach was used to create the "I" in the Ipe program icon!<br></div><div><img src="cid:ii_klaywi521" alt="ipe128.png" width="128" height="128"><br><br></div><div>Nathaniel<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 18, 2021 at 8:33 AM Nathaniel Cunningham <<a href="mailto:nathaniel.cunningham@gmail.com" target="_blank">nathaniel.cunningham@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Yes, as Otfried said -- I plot multiple cycles of a parametric circle (x=cos(t), y=sin(t) or similar) with an added translation (extra t term in x or y).</div><div><br></div><div>I attach a screenshot showing an example including the values used in the plot ipelet.</div><div><br></div><div>Nathaniel<br></div><div><br></div><div><img src="cid:ii_klays4ty0" alt="ipe plot springs.png" width="439" height="536"><br><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 18, 2021 at 2:13 AM Hemza <<a href="mailto:hemza.dz@gmail.com" target="_blank">hemza.dz@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">cool, I know about ipeplot and use it for basic functions plotting. could you elaborate more on how to describe a spring parametrically?<div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 17 Feb 2021 at 20:31, Nathaniel Cunningham via Ipe-discuss <<a href="mailto:ipe-discuss@lists.science.uu.nl" target="_blank">ipe-discuss@lists.science.uu.nl</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>The "plots" ipelet is a great way to create springs and other shapes that can be mathematically defined!<br></div><div><a href="https://github.com/lahvak/ipeplots" target="_blank">https://github.com/lahvak/ipeplots</a></div><div><br></div><div>-- Nathaniel<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 17, 2021 at 1:26 PM Nathaniel Cunningham <<a href="mailto:nathaniel.cunningham@gmail.com" target="_blank">nathaniel.cunningham@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>The "plots" ipelet is a great way to create springs and other shapes that can be mathematically defined!<br></div><div><a href="https://github.com/lahvak/ipeplots" target="_blank">https://github.com/lahvak/ipeplots</a></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 17, 2021 at 11:31 AM Hemza via Ipe-discuss <<a href="mailto:ipe-discuss@lists.science.uu.nl" target="_blank">ipe-discuss@lists.science.uu.nl</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">---------- Forwarded message ---------<br>From: <strong class="gmail_sendername" dir="auto">Hemza</strong> <span dir="auto"><<a href="mailto:hemza.dz@gmail.com" target="_blank">hemza.dz@gmail.com</a>></span><br>Date: Wed, 17 Feb 2021 at 08:24<br>Subject: Re: [Ipe-discuss] How to draw a spring?<br>To: Fabien Lafont <<a href="mailto:lafont.fabien@gmail.com" target="_blank">lafont.fabien@gmail.com</a>><br></div><br><br><div dir="ltr">Thanks for the tips. svgtoipe is a good way to do it.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 17 Feb 2021 at 07:51, Fabien Lafont <<a href="mailto:lafont.fabien@gmail.com" target="_blank">lafont.fabien@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">With Bézier curves and the snap to grid you can easily make one. Then you can stretch it. Another solution is to use one that you like and use svgtoipe or pdftoipe.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 17, 2021, 08:30 Hemza <<a href="mailto:hemza.dz@gmail.com" target="_blank">hemza.dz@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">it is possible to sketch 'zig zag' springs, but coils like springs are not easy to sketch.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, 17 Feb 2021 at 07:19, Fabien Lafont <<a href="mailto:lafont.fabien@gmail.com" rel="noreferrer" target="_blank">lafont.fabien@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Just stretch it. Keyboard shortcut : e</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 17, 2021, 08:10 Hemza via Ipe-discuss <<a href="mailto:ipe-discuss@lists.science.uu.nl" rel="noreferrer" target="_blank">ipe-discuss@lists.science.uu.nl</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi, <div>I just began to learn how to use Ipe. It is a great tool and already saved me many hours on drawing physics illustrations.</div><div>One thing that I find frustrating to draw is drawing 'springs' (which are crucial things in mechanics problems). In Tikz, you could control how the spring looks like (see e.g <a href="https://tex.stackexchange.com/questions/41608/draw-mechanical-springs-in-tikz" rel="noreferrer noreferrer" target="_blank">https://tex.stackexchange.com/questions/41608/draw-mechanical-springs-in-tikz</a>). Is there anything I can do to mimic this on Ipe? </div><div><br></div><div>Hemza.</div></div>
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