Hi A.J.,
Snapping to the center is already available in the current SVN versions, and snapping to the midpoint of a straight line shouldn't be too difficult to implement.
Snapping tangentially however is another story, as it requires line-to-line snapping. Currently we only do point-to-point and point-to-line snapping. The calculations for snapping to a line are provided by some libraries, but as far as I can tell they do not provide line-to-line calculations. A simple case, such as snapping a rectangle tangentially to a circle, shouldn't be too difficult to build ourselves. Snapping any Beziér path tangentially to any another object however requires quite some sophisticated programming unfortunately. So although it's very useful, don't expect such a feature any time soon :-(.
Diederik
A.J. Carter wrote:
I'm really pleased to have discovered inkscape recently and it's fantastic that it's free and open source. In the past I've used autodesk autosketch (a cut down version of autocad) for "non-cad" scientific/technical illustrations for publication in papers etc.
One feature which I find makes drawing easier is the ability to set snapping constraints, like "endpoint", "midpoint", "centre", "tangent" when both drawing an element and selecting to transform an existing element (the cursor jumps and changes shape to indicate which snap is currently in action). I wondered if any similar feature exists in inkscape, or whether it might be considered for the roadmap?
Thanks
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