Problems with skArc

sören_svensson

Hi,

I'm creating some corners with skArc but some are ending up inside-out!

I'm using the getArcMidPoint function posted here earlier.

All the small arcs in the picture below should be "outies" and the large center one "innie".


Here's the code for the lower left one (ll and ur are vectors)

start = ll + vector(0 * millimeter, radius);

        end = ll + vector(radius, 0 * millimeter);

        mid = getArcMidpoint(ll + vector(radius, radius), start, end);

        skArc(sketch1, "arc2", {

                "start" : start,

                "mid" : mid,

                "end" : end

        }):

and the top right

start = ur + vector(-radius, 0 * millimeter);

        end = ur + vector(0 * millimeter, -radius);

        mid = getArcMidpoint(ur + vector(-radius, -radius), start, end);

        skArc(sketch1, "arc8", {

                "start" : start,

                "mid" : mid,

                "end" : end

        });

Anyone have any idea why and how to control it:

Regards
Soren

ilya_baran

Try switching the start and end arguments to the getArcMidpoint function -- I think that function (Neil wrote it) gets the midpoint assuming the arc is counterclockwise from start to end.

sören_svensson

Thanks, worked perfectly!
I should have thought about that