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0027122: Data Exchange - invalid shapes are produced during model translation due to huge face tolerance

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Problem: The shape has two faces that dimensions are less than tolerance in the specified STEP file. This situation produces the invalid shape.
Change: Shape process has operator FixFaceSize, that is exactly suitable for this shape. The only option of FixFaceSize operator was added to InterfaceStatic, to manage the operator from DRAW command.
Result: The shape without artifacts can be reproduced from STEP file with an extra healing procedure.
This commit is contained in:
atereshi 2022-07-15 14:09:09 +03:00 committed by Vadim Glukhikh
parent c325231de6
commit f706dd34b3
2 changed files with 28 additions and 0 deletions
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1
src/STEPControl/STEPControl_Controller.cxx
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@ -239,6 +239,7 @@ STEPControl_Controller::STEPControl_Controller ()
Interface_Static::Init ("XSTEP", "FromSTEP.FixShape.FixNonAdjacentIntersectingEdgesMode", 't', "-1");
Interface_Static::Init ("XSTEP", "FromSTEP.FixShape.FixVertexPositionMode", 't', "0");
Interface_Static::Init ("XSTEP", "FromSTEP.FixShape.FixVertexToleranceMode", 't', "-1");
Interface_Static::Init ("XSTEP", "FromSTEP.FixFaceSize.Tolerance", 't', "1.e-7");
// ika 28.07.16: Parameter to read all top level solids and shells,
// should be used only in case of invalid shape_representation without links to shapes.

27
tests/bugs/step/bug27122 Normal file
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@ -0,0 +1,27 @@
puts "================"
puts "OCC27122"
puts "================"
puts ""
#####################################################################
# STEP import regression: invalid shapes are produced during model translation due to huge face tolerance
#####################################################################
pload XDE
# Empty resource file name to take params from InterfaceStatic
param "read.step.resource.name" "\"\""
# Add FixFaceSize operator
param "FromSTEP.exec.op" FixShape,FixFaceSize
# Set a tolerance exceeding the size of the problem face to FixFaceSize operator
param "FromSTEP.FixFaceSize.Tolerance" 0.0508
stepread [locate_data_file bug27122_280696.stp] a *
# restore old params
param "read.step.resource.name" STEP
param "FromSTEP.exec.op" FixShape
param "FromSTEP.FixFaceSize.Tolerance" 1.e-7
checknbshapes a_1 -t -face 10
checkview -display a_1 -3d -path ${imagedir}/${test_image}.png