Wrote

would be perfect to have an option to have it like that with your addon,
so you can lock ratio of X-Y to 1:1.

My understanding is that you want to scale on a fixed canvas.

Wrote

Wrote

would be perfect to have an option to have it like that with your addon,
so you can lock ratio of X-Y to 1:1.

My understanding is that you want to scale on a fixed canvas.

Im gonna explain it graphically

1) on the right you can see stretching of the addon graph
2) on the left you can see fixed XY axis ratio

Ok, now I see. You need some CAD features for the graph. I wanted to make a separate plug-in for this (based on Opens-CAD). But there is no time for this.

I'll think about what I can do here.

Wrote

I think Ive made a lot of progress but Im stuck on one particular problem.
1) How can I substract areas of these polygons? Either green or violet area.
2) How can I calculate length of red line in overlapping area?

About this case in particular:
- The violet area isn't hard to draw, there is a chunk() algorithm in my worksheet provided to trim polygons;
- Green area is slightly more complicated, but starting from the polygon above you can search the leftmost points and then you can insert in amid the four rectangle's corners (in the correct order, the opposite of the inner figure);
- Red line length: the simplest thing is to create the clipped violet polygon, calculate the perimeter, find the leftmost points and subtract the difference of their y-coordinates


If you want something more general, you can implement a clipping algorithm in SMath code (would be very nice);

You can even use an already backed Clipping library (f.e. here we have the GPC Wrapper, that however has license limitations);

Hi Davide, and thanks for this wonderful sheet.
I found a bug in the sheet, for some reason all the rectangle solid or hollow sections don't work. I am using build 7822.
I tried to test your code and for some reason, the compounded matrix created from your shape functions does not end up being a matrix with "n" rows and "2" columns but rather a matrix in a matrix and I don't know why

Mido0,
try to update, because with the current release it doesn't seem to have problems

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sergio

Thanks Pompelmo, I updated my Smath and still the problem exists!!
Itried to uninstall all Smath and reinstall it again with the same problem!!

Just change p2:roundedRect(...) optimization from symolic to numeric.

In my personal experience, the stack and agument functions, along with other allies such as reverse and matrix, always manage to cause some kind of issue. The issue also is related about where the evaluation appear, or the function, or something else. The attached shows the issue in an isolated environment.

roundedRect.pdf (124 КиБ) скачан 61 раз(а).
roundedRect.sm (24 КиБ) скачан 57 раз(а).

With those two evals it seems that roundedRect works, for numeric and symbolic evaluations.



Best regards.
Alvaro.

THANK YOU, Davide !!!, THANK YOU, Razonar!!!