[cgma-dev] r4782 - cgm/trunk/geom/OCC

[Iulian Grindeanu]

Hello,
I have a question about cgm build configured with occ. I have an error in test/test_occ (it does not pass)
With the debugger, I see that the error is happening in Extrema_ExtPS. 

backtrace
#0  OCCSurface::u_v_from_position (this=0xcbe880, location=..., u=@0x7fffffffdec8, v=@0x7fffffffdec0, closest_location=0x7fffffffdcf0) at OCCSurface.cpp:428
#1  0x00000000005a8847 in RefFace::u_v_from_position (this=0xcd7d90, location=..., u=@0x7fffffffdec8, v=@0x7fffffffdec0, closest_location=0x7fffffffdcf0) at RefFace.cpp:908
#2  0x0000000000420643 in main (argc=1, argv=0x7fffffffe018) at test_occ.cpp:98


Then I see that some patches are required. 

Do we have to modify the occ source code? What is occ_patches?
How do we do that? 
We are using an occ build 6.3.0, which was last build on Sep 23, 2009

The build is here, for mcs network
/homes/fathom/3rdparty/occ/OpenCASCADE6.3.0/
(installed library is at /homes/fathom/3rdparty/occ/OpenCASCADE6.3.0/gcc)

What am I missing?

Thanks,
Iulian

----- Original Message -----
> Author: janehu
> Date: 2011-04-28 11:53:43 -0500 (Thu, 28 Apr 2011)
> New Revision: 4782
> 
> Modified:
> cgm/trunk/geom/OCC/occ_patches
> Log:
> Correct previous patches for OCC6.3 build, which caused testcase check
> failure on gnep.
> 
> Modified: cgm/trunk/geom/OCC/occ_patches
> ===================================================================
> --- cgm/trunk/geom/OCC/occ_patches 2011-04-28 00:36:18 UTC (rev 4781)
> +++ cgm/trunk/geom/OCC/occ_patches 2011-04-28 16:53:43 UTC (rev 4782)
> @@ -1,118 +1,78 @@
> ---- ros/src/Extrema/Extrema_ExtPElS.cxx 2011-03-29 11:35:08.000000000
> -0500
> -+++
> /mnt/disk2b/jhu/tempdir/OpenCASCADE6.3.0/ros/src/Extrema/Extrema_ExtPElS.cxx
> 2002-04-23 11:10:21.000000000 -0500
> -@@ -56,7 +56,6 @@
> +--- BRepClass_FaceClassifier.cxx_old 2011-04-28 10:16:13.000000000
> -0500
> ++++ BRepClass_FaceClassifier.cxx 2011-04-28 10:16:51.000000000 -0500
> +@@ -55,6 +55,7 @@
> + Extrema_ExtPS myExtrem;
> + //-- myExtrem.Initialize(HS, U1, U2, V1, V2, Tol, Tol);
> + myExtrem.Initialize(Surf, U1, U2, V1, V2, Tol, Tol);
> ++ myExtrem.Perform(P);
> + //----------------------------------------------------------
> + //-- On cherche le point le plus proche , PUIS
> + //-- On le classifie.
> +--- Extrema_ExtPS.cxx_old 2011-04-28 10:13:52.000000000 -0500
> ++++ Extrema_ExtPS.cxx 2011-04-28 10:15:46.000000000 -0500
> +@@ -88,10 +88,18 @@
> + Standard_Real U, V;
> + PS.Parameter(U, V);
> + if (myS->IsUPeriodic()) {
> +- U = ElCLib::InPeriod(U, myuinf, myuinf+myS->UPeriod());
> ++ Standard_Real Uupper = myuinf+myS->UPeriod();
> ++ if(U>(myuinf-mytolu) && U < myuinf) U = myuinf;
> ++ else if(U < (Uupper+mytolu) && U > Uupper) U = Uupper;
> ++ else
> ++ U = ElCLib::InPeriod(U, myuinf, myuinf+myS->UPeriod());
> + }
> + if (myS->IsVPeriodic()) {
> +- V = ElCLib::InPeriod(V, myvinf, myvinf+myS->VPeriod());
> ++ Standard_Real Vupper = myvinf+myS->VPeriod();
> ++ if(V>(myvinf-mytolv) && V < myvinf) V = myvinf;
> ++ else if(V < (Vupper+mytolv) && V > Vupper) V = Vupper;
> ++ else
> ++ V = ElCLib::InPeriod(V, myvinf, myvinf+myS->VPeriod());
> + }
> + if ((myuinf-U) <= mytolu && (U-myusup) <= mytolu &&
> + (myvinf-V) <= mytolv && (V-myvsup) <= mytolv) {
> +--- Extrema_ExtPElS.cxx_old 2011-04-28 11:48:39.000000000 -0500
> ++++ Extrema_ExtPElS.cxx 2011-04-28 10:13:38.000000000 -0500
> +@@ -56,6 +56,7 @@
> gp_Vec myZ = Pos.XDirection()^Pos.YDirection();
> Standard_Real U1 = gp_Vec(Pos.XDirection()).AngleWithRef(OPp,myZ);
> //-PI<U1<PI
> Standard_Real U2 = U1 + PI;
> -- if(U1 > -Tol && U1 < 0.) {U1 = 0.;}
> ++ if(U1 > -Tol && U1 < 0.) {U1 = 0.;}
> if (U1 < 0.) { U1 += 2. * PI; }
> -