On Wed, Mar 23, 2011 at 06:52:53PM -0500, forget color wrote: > > In the general case (non-semicircle) this isn't enough to describe an > > arc; you get two arcs. > > I figured there must be a way to decide which circle the arc is from > given the winding direction, but haven't figured it out.
I meant there are two arcs with the given start and end point, radius, and winding direction. One is <180 degrees of arc, the other is >180 degrees of arc (in the cases where the radius > 1/2 the distance between endpoints). > It makes me wonder: these are the only values I give to EMC2 to draw > the arc and it can do it. It knows which one you want based on whether you give + or - R. > Is EMC2 calculating the center? I'm > guessing it must be. Maybe I'll go poking around the code to see if I > can find it. Yes it definitely is! See interp_arc.cc. ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
