Common tangent line of two ellipses

LibreCAD tangent2

Common tangent line of ellipses

LibreCAD supports isometric grids now.

Also added to LibreCAD (targeting 2.0.0 version), drawing common tangent lines of two ellipses. Again, we use our own quartic equation solver to construct the tangent line. Actually, some cleanup still needed for the equation solver part, nonetheless, the feature is stable enough for general use.

The LibreCAD Team

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