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0027721: Add possibility to read STEP file with invalid shape_representation entity.

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Add special parameter, which allow reading of all top level (not shared by any other entities) solids (manifold_solid_brep) and shells (shell_based_surface_model).

The examples how to use a new parameter:

DRAW:
switch on a parameter:
    param read.step.all.shapes On
update model to apply new parameter value:
    newmodel
read as usual:
    stepread test.stp res * // each top level solid or shell will be read as res_i shape.
    or
    ReadStep Doc test.stp

CXX Code:
switch on a parameter:
    Interface_Static::SetIVal("read.step.all.shapes", 1);
read as usual
This commit is contained in:
ika 2016-07-28 16:13:25 +03:00 committed by bugmaster
parent 30c1ef75af
commit c6f530b8d9
3 changed files with 46 additions and 0 deletions
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8
src/STEPControl/STEPControl_Controller.cxx
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@ -191,6 +191,14 @@ STEPControl_Controller::STEPControl_Controller ()
Interface_Static::Init ("XSTEP","write.step.sequence",'t',"ToSTEP");
Interface_Static::Init ("XSTEP","read.step.sequence",'t',"FromSTEP");
// ika 28.07.16: Paremeter to read all top level solids and shells,
// should be used only in case of invalid shape_representation without links to shapes.
Interface_Static::Init("step", "read.step.all.shapes", 'e', "");
Interface_Static::Init("step", "read.step.all.shapes", '&', "enum 0");
Interface_Static::Init("step", "read.step.all.shapes", '&', "eval Off");
Interface_Static::Init("step", "read.step.all.shapes", '&', "eval On");
Interface_Static::SetIVal("read.step.all.shapes", 0);
init = Standard_True;
}

19
src/STEPControl/STEPControl_Reader.cxx
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@ -53,8 +53,10 @@
#include <StepRepr_RepresentationMap.hxx>
#include <StepRepr_RepresentationRelationship.hxx>
#include <StepRepr_ShapeAspect.hxx>
#include <StepShape_ManifoldSolidBrep.hxx>
#include <StepShape_ShapeDefinitionRepresentation.hxx>
#include <StepShape_ShapeRepresentation.hxx>
#include <StepShape_ShellBasedSurfaceModel.hxx>
#include <TCollection_AsciiString.hxx>
#include <TColStd_Array1OfAsciiString.hxx>
#include <TColStd_Array1OfReal.hxx>
@ -123,6 +125,23 @@ Standard_Integer STEPControl_Reader::NbRootsForTransfer()
Standard_Integer nb = Model()->NbEntities();
for (Standard_Integer i = 1; i <= nb; i ++) {
Handle(Standard_Transient) ent = Model()->Value(i);
if (Interface_Static::IVal("read.step.all.shapes") == 1) {
// Special case to read invalid shape_representation without links to shapes.
if (ent->IsKind(STANDARD_TYPE(StepShape_ManifoldSolidBrep))) {
Interface_EntityIterator aShareds = WS()->Graph().Sharings(ent);
if (!aShareds.More()) {
theroots.Append(ent);
WS()->TransferReader()->TransientProcess()->RootsForTransfer()->Append(ent);
}
}
if (ent->IsKind(STANDARD_TYPE(StepShape_ShellBasedSurfaceModel))) {
Interface_EntityIterator aShareds = WS()->Graph().Sharings(ent);
if (!aShareds.More()) {
theroots.Append(ent);
WS()->TransferReader()->TransientProcess()->RootsForTransfer()->Append(ent);
}
}
}
if(ent->IsKind(STANDARD_TYPE(StepBasic_ProductDefinition))) {
// PTV 31.01.2003 TRJ11 exclude Product Definition With Associated Document from roots
if (ent->IsKind(STANDARD_TYPE(StepBasic_ProductDefinitionWithAssociatedDocuments))) {

19
tests/bugs/step/bug27721 Normal file
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@ -0,0 +1,19 @@
puts "========"
puts "OCC27721"
puts "========"
puts ""
##############################################################################
# Add possibility to read STEP file with invalid shape_representation entity.
##############################################################################
param read.step.all.shapes 1
newmodel
ReadStep D [locate_data_file bug27721.stp]
XGetOneShape result D
checknbshapes result -solid 1 -shell 2 -shape 43
param read.step.all.shapes 0
newmodel