Solution :
* You create a sketch with a line of the dimension you want to show (a future reference, but visible)
* You show the sketch (space bar)
* You create a Draft Dimension about a line of the sketch
* You un-show the sketch (space bar)
Is there a way to relocate a diameter’s dimension line to somewhere outside the circle that it measures?
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- Shalmeneser
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Re: Is there a way to relocate a diameter’s dimension line to somewhere outside the circle that it measures?
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Re: Is there a way to relocate a diameter’s dimension line to somewhere outside the circle that it measures?
one can do just fine without helplines.
geometry description for the "math model" of the shape is simply not the same as what is rendered on the screen (with tessellation).
for stl or other mesh formats, it is generally the same though (give or take some settings here and there).
with exaggerated settings on tessellation, with a circle created with sketch/pad in pd wb.
not sure how you come to the above conclusion.wisecad wrote: ↑Mon Jun 21, 2021 7:27 am was already using Draft-Snaps while trying to add a linear dimension to the outer circle, but because of the odd number of segments representing the circle, I wasn’t able to choose two opposite points that would give me the exact dimension of the circle’s diameter but in a linear dimension format.
geometry description for the "math model" of the shape is simply not the same as what is rendered on the screen (with tessellation).
for stl or other mesh formats, it is generally the same though (give or take some settings here and there).
with exaggerated settings on tessellation, with a circle created with sketch/pad in pd wb.
Re: Is there a way to relocate a diameter’s dimension line to somewhere outside the circle that it measures?
Hi User 1234,
You are absolutely right. Thank you for pointing that out.
I zoomed in to see the details of the dimension lines I have added, at what I thought were "contact points" and realized they were not accurate.
Sorry if I misled anyone. This is why sometimes is worthwhile to read through the entire thread.
Ultimately, I modified the dimension lines to use expressions referring to the exact values needed to get the accuracy I want.
Re: Is there a way to relocate a diameter’s dimension line to somewhere outside the circle that it measures?
Hello Shalmeneser,Shalmeneser wrote: ↑Mon Jun 21, 2021 6:39 pm Solution :
* You create a sketch with a line of the dimension you want to show (a future reference, but visible)
* You show the sketch (space bar)
* You create a Draft Dimension about a line of the sketch
* You un-show the sketch (space bar)
Thank you for sharing your step-by-step solution. Truly appreciate it.
Certainly one of the simplest and most robust one yet.
Re: Is there a way to relocate a diameter’s dimension line to somewhere outside the circle that it measures?
Hello Heda,heda wrote: ↑Mon Jun 21, 2021 8:02 pm one can do just fine without helplines.
not sure how you come to the above conclusion.wisecad wrote: ↑Mon Jun 21, 2021 7:27 am was already using Draft-Snaps while trying to add a linear dimension to the outer circle, but because of the odd number of segments representing the circle, I wasn’t able to choose two opposite points that would give me the exact dimension of the circle’s diameter but in a linear dimension format.
geometry description for the "math model" of the shape is simply not the same as what is rendered on the screen (with tessellation).
for stl or other mesh formats, it is generally the same though (give or take some settings here and there).
with exaggerated settings on tessellation, with a circle created with sketch/pad in pd wb.
tess_vs_snap.png
I jumped to a false and foolish conclusion. Thank you for challenging it. You see, I my previous experience was developed using polygonal-editors, specifically SketchUp and Blender, so I am still cursed with the tendency to try to click on vertices and edges everywhere, thinking I am interacting with the actual geometry instead of the tessellated representation that it really is in FreeCAD’s case.
Thank you as well for the illustration you posted regarding the use of Draft-Snaps’s angle-snapping option.