[cgma-dev] question about iges format (to Jane)

[Iulian Grindeanu]

Hi Jane, 
Dan Le found this problem with respect to igs reader: 
Please see the attached files. 
testgeom.cc is a version of CGM/itaps/testgeom.cc file, which also prints the coordinates of all the vertices from the model. 
iges format is supported by OCC and Acis/cubit engines. 
Still, the coordinates of the vertices are 1000 larger when occ is used. 
So if you run this test 
testgeom cduct.igs 
in Cubit based cgm or 
testgeom_occ cduct.igs 
in OCC based cgm, 
you get different results (1000 times bigger in occ case). It seems that in cubit case, we do a conversion to sat format, first. 

ITAPS GEOMETRY INTERFACE TEST PROGRAM: 

gLoad: Reading STEP/IGES file '/home/iulian/tmp/test_lorenzo/cduct.igs'... 
Model conversion succeeded: /tmp/CBT.Hoo5yc.sat 
Read 6 ACIS Entities from the input file 


Constructed 6 Volumes: 1 to 6 
Model contents: 
vertices: 24 
edges: 24 
faces: 6 
regions: 6 
vertex index 0 : 0 0 0 
vertex index 1 : 0 1 0 
vertex index 2 : 10.5 15 0 
vertex index 3 : 11.5 15 0 
... 

testgeom_occ cduct.igs 
Geometry engine set to: OpenCascade 6.3 


ITAPS GEOMETRY INTERFACE TEST PROGRAM: 

gLoad: Total number of loaded entities : 78. 

Constructed 6 Volumes: 1 to 6 
Model contents: 
vertices: 24 
edges: 24 
faces: 6 
regions: 6 
vertex index 0 : 0 0 0 
vertex index 1 : 0 1000 0 
vertex index 2 : 10500 15000 0 
vertex index 3 : 11500 15000 0 
... 



Can you please tell me what we should do to get similar results ? 

Thanks, 
Iulian 

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