GeomAPI_IntSS Problem

akbari1358_31365's picture
akbari1358_31365
Wed, 06/09/2004 - 09:48
Forums: 
Other usage issues

Hi EveryBody,
I use the following code to find the intersection
curve between a surface (MySurface) and a Plane
(MyPlane).
Most of the generated curves (aCurve1) exactly lie
down on MySurface, but many of them are wrong
that a part of these wrong curves are straight lines and
dont lie down on MySurface.
Thanks for any help that satisfy this mistake.

gp_Dir d1(0,0,1);
while(j>=aZmin )
{
j=j-10;
gp_Pnt p1(0,0,j);
Handle(Geom_Surface) MyPlane=GC_MakePlane(p1,d1).Value();
GeomAPI_IntSS aInterSS(MySurface,MyPlane,1.0e-7 );
//there is only one curve as a result
Handle(Geom_Curve) aCurve1 = aInterSS.Line(1);
//…. show the curve(aCurve1)
}

MCV's picture
MCV
Wed, 06/09/2004 - 21:21

I am not so sure, that there are just one curve each on every intersection. You shall normaly iterate over a set of intersection curves.
If you do not know how, let me know and I will send you some code example.

Best Regards

MCV

akbari1358_31365's picture
akbari1358_31365
Sun, 06/13/2004 - 19:42

Dear Sir,
Thank you for your answer and Sorry for delay..
Actually I use the following code in my program and only one curve is made for all sections.
Best Regards.

gp_Dir d1(1,0,0);
Standard_Real j=aXmin;
while(j

akbari1358_31365's picture
akbari1358_31365
Sun, 06/13/2004 - 19:49

Dear Sir,
Thank you for your answer and Sorry for delay..
Actually I use the following code in my program and only one curve is made for all sections.
Best Regards.

gp_Dir d1(1,0,0);
Standard_Real j=aXmin;
while(j

wdhefengli_146468's picture
wdhefengli_146468
Fri, 03/15/2019 - 05:49

Hi EveryBody,
I use the following code to find the intersection
curve between a surface (MySurface) and a surface
(OtherSurface).
Most of the generated curves (aCurve1) exactly lie
down on MySurface, but many of them are wrong
that a part of these wrong curves are straight lines and
dont lie down on MySurface.Why only one curves.

Thanks for any help that satisfy this mistake.

Forum supervisor's picture
Forum supervisor
Fri, 03/15/2019 - 12:35

Dear fengli​,

You can

  • share example of your intersected surfaces and inform used OCCT version
  • try DRAW-command xdistcs to check quality of the intersection result and inform the maximal found distance from the intersection curve to every surface.
  • communicate via our Contact Form for providing additional info about the needs of your projects and our efficient support.

Best regards,

​Forum supervisor