CAD type interface with Web Application

Question

CAD type interface with Web Application

(OP)

9 Sep 21 23:52

This maybe a long shot, but I figured I would ask anyways.

I have built my website in python using Django and have my blog up and running.

I now want to dabble in adding some calculations to my website and one of the capabilities I am going to need is a CAD type interface to allow me and users to draw rectangles, polygons, etc.

Does anyone have some recommendations/ideas on how to embed some CAD type interfaces within my website? I want to be able to draw on my web application and perform some functions on the things drawn on screen.

S&T - www.re-tug.com

sticksandtriangles (Structural) · Answer 1 · 2021-09-10 02:53:36

After some research, it might be time to learn some javascript...

https://tmjohnst.github.io/JSCAD/

This looks promising and very similar to what I wanted to try to achieve.

Reading about the python libraries such as pyqt and tkinter, it sounds a little bleak to try to achieve.

S&T - www.re-tug.com

Celt83 (Structural) · Answer 2 · 2021-09-10 05:06:50

Active drawing on the webpage it seems a mix of javascript and canvas element is probably a good first step: Link

You’ll need to figure out a way to map the pixel dimensions of the object to real dimensions if your planning to run calcs off the data.

Webgl is another route: Link

My Personal Open Source Structural Applications:
https://github.com/buddyd16/Structural-Engineering

Open Source Structural GitHub Group:
https://github.com/open-struct-engineer

IDS (Civil/Environmental) · Answer 3 · 2021-09-12 23:47:46

I wouldn't call it a CAD type interface, but Excel lets you draw sticks and triangles, and you can extract coordinates and other parameters from the drawn objects, or draw shapes from coordinates. I have done a fair bit with VBA but you would need to use Javascript for the web, so good luck with that.

A possibility might be to link Excel to Python with pyxll to do all the hard work, and just use Javascript as an interface, but I haven't looked into that. I don't think xlwings would work, because that uses VBA to link to the Python code, so won't work on-line.

Example of plotting Excel shapes with VBA:
https://newtonexcelbach.com/2008/11/11/drawing-in-...

Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/

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CAD type interface with Web Application