Measure work slow on arcs

Could you provide details about the settings used for the measure tool, or attach your preferences file? A quick test (new prefs, new doc) doesn't reproduce a major performance difference for me (r14630).

It happen for example with all toggles disabled. Are you sure remove the arcs moving all 4 /8 handles?

You only need to move one handle: Video with the problem:
https://www.youtube.com/watch?v=IbOl8FO5BBY

Is a old computer but I also notice this in a new one with SSD.
Both with debian stretch and last trunk.
I see tweenk work on arcs on 2geom... maybe this fix it when merge it to inkscape. And maybe fix 1490324.

On 2016-02-06 17:09 (+0100), Jabiertxof wrote:
> Are you sure remove the arcs moving all 4 /8 handles?

Yes, I'm aware of how to trigger a rewrite of the path data in the node tool (which converts arc commands into cubic bezier curve commands), and I usually double-check the value of 'd' via XML Editor. I'll retest later (my initial tests got interrupted by bug #1541963 when I wanted to compare measuring the two types of paths side by side).

@Jabiertxof: what I can reproduce is an increasingly poorer performance with the circle depending on zoom level: the closer I'm zoomed in, the worse the performance gets. The absolute size of the circle does not appear to have an influence on this. The behavior strikes me as odd - I had not assumed that e.g. the precision with which the measure tool detects paths and intersections would depend on the zoom level ...

Does this match the observed issue on your system?

Another contributing factor seems to be toggling OFF "Show measures between items" (ON with default new prefs).

Ok, maybe is not a crossing problem, try to fix. Thanks for check it.

Solved and with a way that make the tool too fast!