yang686526

rendering circle and arcs (dd 1.10)
rendering circle and arcs (dd 1.10)
i'm facing some problems with the new rendering classes introduced in dd 1.10. i have a custom device and view class (derived from the new odgsbasevectorizexxxx classes) that take a drawing and convert it to dwg. just implementing polylineout and polygonout works fine, but i want to support rendering to other simple entities also (circles and arcs), to generate smaller files.
what i noticed is that circleproc () and circulararcprop () are not virtual in odgigeometrysimplifier class, so i cannot override them. also if i derive from odgiconveyour directly (instead odgigeometrysimplifier) i have to implement all other drawing functions (polygonproc, meshproc, etc...), because they all are pure-virtual. is there a way to suppport custom rendering just to the entity types that i want and delegate other entities to odgigeometrysimplifier?
what i need to custom render are just planar circle and arcs, maybe already transformed to view coordinates... (in dd 1.09 i overrided circle () function and checked the normal verctor to see if it was a planar circle/arc);
thanks,
tiago gehring
hi tiago,
please see odvectorizeex example. i hope you'll find all the answers there.
dmitry,
thanks for your reply, i looked in odvectorizeex example and it indeed gave me some answers, but it has the same problem: circleproc () and circulararcproc () get never called (to test i compiled this sample and passed a test file, that has many circles and arcs);
i don't know if the sample is wrong or if there's a bug in the libraries, any help appreciated.
thanks again
tiago
hi,
it's a bug. we'll fixed it asap.
for now you can use next code as a temporary fix:
code:
void yourgeomhandler::elliparcproc(const odgeelliparc3d& arc,
const odgepoint3d* pendpointsoverrides,
odgiarctype arctype,
const odgevector3d* pextrusion)
{
if(!pendpointsoverrides && arc.isclosed() && arc.iscircular())
{
yourgeomhandler::circleproc(arc.center(), arc.majorradius(), arc.normal(), pextrusion);
}
else
{
odgigeometrysimplifier::elliparcproc(arc, pendpointsoverrides, arctype, pextrusion);
}
}

ok, thanks a lot, i'll use the work around you suggested;
tiago
hi,
i have a question that is sort of related to the problem above. the odvectorizeexample suggests overriding two versions of elliparcproc - one that takes an arc and another that takes three points and two radiuses. the problem is that i cannot find the second one in any of the parent classes. what calls it then? or is it just a mistake?
thanks
arno歵

just to know, i think this problem (the fact that circleproc / circulararcproc are never called) was not solved in dd 1.10 update 1, right?
thanks,
tiago gehring
quote:
originally posted by arnost
hi,
i have a question that is sort of related to the problem above. the odvectorizeexample suggests overriding two versions of elliparcproc - one that takes an arc and another that takes three points and two radiuses. the problem is that i cannot find the second one in any of the parent classes. what calls it then? or is it just a mistake?
thanks
arno?t
hi!
now there is only this version of elliparcproc:
code:
virtual void elliparcproc(
const odgeelliparc3d& arc,
const odgepoint3d* pendpointsoverrides = 0,
odgiarctype arctype = kodgiarcsimple,
const odgevector3d* pextrusion = 0) = 0;