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we can share the code here. Since I actually wrote the code from scratch, there’s no problem of licensing/copyright.

Currently, LC has its own solvers for: linear equation sets, quadratic, cubic, and quartic equations, simultaneous quadratic equation sets of two variables. I’m building a more unified equation solver to take everything here as a quadratic form (with linear as a special case), then, a unified quadratic-quadratic intersection can be used to find intersections between any two of: line, circle, ellipse, hyperbola and parabola. With hyperbola and parabola, we can construct any tangent circle of given circles (with points as zero-radius circles, and lines as a special case using parabola). The development is not complete yet, more testing is needed, but I do think this is viable way, and the code base should be neat in C++11 (without boost).

Thanks,

dli

Now I only wish this would also work for lines/points (radius infinite & zero respectively) already

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We do know that LibreCAD is used in countries where there is no $$ to buy proprietary software (I live in such country myself), therefor it’s import for us to keep LibreCAD free. Personally I wouldn’t say that DWG support is upmost important, but a very nice to have so users like you don’t have to use software to do the DWG conversion and be able to exchange drawings freely.

- Automatic snap will be coming with LibreCAD 2.0

Currently we are thinking and putting out ideas what LibreCAD 3 (it will hopefully be a full re-write) will look like and what it’s capabilities should be and we will put up a list of features we want to implement later this year and ask for our users input and decide what is important and not.
We do know already that the following items are important:

1) Theming, create and use your own icons
2) Scripting support by means of Python for example
3) Create your own keyboard maps shortcuts and command line entries

Ries

below will explain why.
- Why you need dwg-support???
- To get users of other (proprietary) software.

Implementation of the ‘dwg-support’ coming this project to this: full compatibility with other software will not.
files from AutoCAD will open in librecad with a buggy.
At the same time, the librecad-files will be displayed incorrectly in AutoCAD (and other *-cad).

I am using (with varying success) qcad \ librecad from 2007. mainly develop small schemes for construction workers (I’m an engineer for thermal insulation). for my work it nearly enough.
but my fellow architects, for whom * cad is the main instrument from morning to night, terribly lacking functionality librecad.
the fact that they are important speed – and this is closely related to the functionality of the application.

a shortage of the basic functions:
- Automatic snap
- The possibility to assign keyboard shortcuts to various commands
- Editing, creating, destination of styles to objects (the ability to adjust the parameters for drawing standards, modify
dimension lines and arrows, etc.)
- (Then you can implement support for dwg)
- In the future – built-in language

and once again return to dwg.
If librecad will have a normal feature, you can go to him and without a dwg.
Nothing prevented me to convert my dwg-projects (by the way, from stolen proprietary CAD – I live in one of the post-Soviet countries) in dxf, and then then finish them in a qcad.

PS Many house-developers of my country would have gladly switched to free software, instead of sitting, fear, and wait for them to come
and in recent years come more often.

Thank you for your attention.
and again sorry for my english …

Ian from robe de baptême fille