[cgma-dev] Seg fault when loading OCC geometry with associations
Jed Brown
jed at 59A2.org
Sat Mar 28 15:13:57 CDT 2009
On Sat 2009-03-28 12:47, Jiangtao Hu wrote:
> When you save the geometry file, it crashed, which means the brep file
> you get may already been wrong. That explained the crash when you load
> it again.
When I saved the geometry, iGeom_save returned success, so I don't think
there was a crash there.
> Can you send a journal file to demonstrate the first crash?
What journal file? I'm creating the geometry using iGeom so it's source
code. The snippet that creates the geometry is below. When
(assoc_with_brick==1) my relation testing code successfully loads the
geometry, but the boundary sets 'facesets' end up being associated with
points instead of the volume. The geometry file for this case is
'dblock-assoc_with_brick.brep'. When (assoc_with_brick==0) I get the
seg-fault in iGeom_load (trace in my last message). The geometry file
for this case is 'dblock.brep'.
I can send you a full test case if necessary, but my current code uses
utilities from my analysis code so it will take a little work to make it
stand alone.
Jed
if (do_geom) {
char geom_options[] = "ENGINE=OCC:",
geom_save_options[] = ":TYPE=OCC:";
iGeom_Instance geom;
iRel_Instance assoc;
iRel_RelationHandle rel;
iBase_EntityHandle brick;
iGeom_newGeom(geom_options,&geom,&err,sizeof geom_options);dIGCHK(geom,err);
iRel_newAssoc(0,&assoc,&err,0);dIRCHK(assoc,err);
iRel_createAssociation(assoc,geom,0,iRel_IGEOM_IFACE,mesh,1,iRel_IMESH_IFACE,&rel,&err);dIGCHK(assoc,err);
iGeom_createBrick(geom,box.x1-box.x0,box.y1-box.y0,box.z1-box.z0,&brick,&err);dIGCHK(geom,err);
iGeom_moveEnt(geom,brick,0.5*(box.x0+box.x1),0.5*(box.y0+box.y1),0.5*(box.z0+box.z1),&err);dIGCHK(geom,err);
err = PrintBoundingBox(geom,brick,"brick");dCHK(err);
{
iBase_EntityHandle gface[6],*gface_p=gface;
int gface_a=6,gface_s;
iGeom_getEntAdj(geom,brick,2,&gface_p,&gface_a,&gface_s,&err);dIGCHK(geom,err);
for (i=0; i<6; i++) {
char name[20];
sprintf(name,"face_%d",i);
err = PrintBoundingBox(geom,gface[i],name);dCHK(err);
}
if (assoc_with_brick) {
for (i=0; i<6; i++) {
iRel_setEntSetAssociation(assoc,rel,brick,facesets[i],&err);dIRCHK(assoc,err);
}
} else {
iRel_setEntSetAssociation(assoc,rel,gface[0],facesets[3],&err);dIRCHK(assoc,err);
iRel_setEntSetAssociation(assoc,rel,gface[1],facesets[1],&err);dIRCHK(assoc,err);
iRel_setEntSetAssociation(assoc,rel,gface[2],facesets[0],&err);dIRCHK(assoc,err);
iRel_setEntSetAssociation(assoc,rel,gface[3],facesets[2],&err);dIRCHK(assoc,err);
iRel_setEntSetAssociation(assoc,rel,gface[4],facesets[4],&err);dIRCHK(assoc,err);
iRel_setEntSetAssociation(assoc,rel,gface[5],facesets[5],&err);dIRCHK(assoc,err);
}
}
iGeom_save(geom,outgeom,geom_save_options,&err,sizeof outgeom,sizeof geom_save_options);dIGCHK(geom,err);
iGeom_dtor(geom,&err);dIGCHK(geom,err);
iRel_dtor(assoc,&err);dIRCHK(assoc,err);
}
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DBRep_DrawableShape
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-------------- next part --------------
DBRep_DrawableShape
CASCADE Topology V1, (c) Matra-Datavision
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