+ fixes #0000763: Bad IGS import

src/Mod/Import/App/AppImportPy.cpp

@@ -116,10 +116,16 @@ static PyObject * importer(PyObject *self, PyObject *args)
             }
         }
         else if (file.hasExtension("igs") || file.hasExtension("iges")) {
+            Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter()
+                .GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/Part")->GetGroup("IGES");
+
             try {
                 IGESControl_Controller::Init();
                 Interface_Static::SetIVal("read.surfacecurve.mode",3);
                 IGESCAFControl_Reader aReader;
+                // http://www.opencascade.org/org/forum/thread_20603/?forum=3
+                aReader.SetReadVisible(hGrp->GetBool("SkipBlankEntities", true)
+                    ? Standard_True : Standard_False);
                 aReader.SetColorMode(true);
                 aReader.SetNameMode(true);
                 aReader.SetLayerMode(true);

src/Mod/Import/Gui/AppImportGuiPy.cpp

@@ -157,10 +157,16 @@ static PyObject * importer(PyObject *self, PyObject *args)
             }
         }
         else if (file.hasExtension("igs") || file.hasExtension("iges")) {
+            Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter()
+                .GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/Part")->GetGroup("IGES");
+
             try {
                 IGESControl_Controller::Init();
                 Interface_Static::SetIVal("read.surfacecurve.mode",3);
                 IGESCAFControl_Reader aReader;
+                // http://www.opencascade.org/org/forum/thread_20603/?forum=3
+                aReader.SetReadVisible(hGrp->GetBool("SkipBlankEntities", true)
+                    ? Standard_True : Standard_False);
                 aReader.SetColorMode(true);
                 aReader.SetNameMode(true);
                 aReader.SetLayerMode(true);
@@ -509,9 +515,14 @@ static PyObject * ocaf(PyObject *self, PyObject *args)
             pi->EndScope();
         }
         else if (file.hasExtension("igs") || file.hasExtension("iges")) {
+            Base::Reference<ParameterGrp> hGrp = App::GetApplication().GetUserParameter()
+                .GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/Part")->GetGroup("IGES");
             IGESControl_Controller::Init();
             Interface_Static::SetIVal("read.surfacecurve.mode",3);
             IGESCAFControl_Reader aReader;
+            // http://www.opencascade.org/org/forum/thread_20603/?forum=3
+            aReader.SetReadVisible(hGrp->GetBool("SkipBlankEntities", true)
+                ? Standard_True : Standard_False);
             aReader.SetColorMode(true);
             aReader.SetNameMode(true);
             aReader.SetLayerMode(true);

src/Mod/Part/App/ImportIges.cpp

@@ -83,6 +83,10 @@ int Part::ImportIgesParts(App::Document *pcDoc, const char* FileName)
         if (aReader.ReadFile((const Standard_CString)FileName) != IFSelect_RetDone)
             throw Base::Exception("Error in reading IGES");
 
+        // Ignore construction elements
+        // http://www.opencascade.org/org/forum/thread_20603/?forum=3
+        aReader.SetReadVisible(Standard_True);
+
         // check file conformity and output stats
         aReader.PrintCheckLoad(Standard_True,IFSelect_GeneralInfo);
 

src/Mod/Part/App/TopoShape.cpp

@@ -573,6 +573,9 @@ void TopoShape::importIges(const char *FileName)
         IGESControl_Controller::Init();
         Interface_Static::SetIVal("read.surfacecurve.mode",3);
         IGESControl_Reader aReader;
+        // Ignore construction elements
+        // http://www.opencascade.org/org/forum/thread_20603/?forum=3
+        aReader.SetReadVisible(Standard_True);
         if (aReader.ReadFile(encodeFilename(FileName).c_str()) != IFSelect_RetDone)
             throw Base::Exception("Error in reading IGES");
 

src/Mod/Part/Gui/DlgImportExportIges.ui

@@ -6,14 +6,14 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>445</width>
+    <width>515</width>
-    <height>270</height>
+    <height>349</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>IGES</string>
   </property>
-  <layout class="QGridLayout" name="gridLayout_3">
+  <layout class="QGridLayout" name="gridLayout_4">
    <item row="0" column="0">
     <widget class="QGroupBox" name="groupBox">
      <property name="title">
@@ -70,6 +70,22 @@
     </widget>
    </item>
    <item row="1" column="0">
+    <widget class="QGroupBox" name="groupBox_2">
+     <property name="title">
+      <string>Import</string>
+     </property>
+     <layout class="QGridLayout" name="gridLayout_3">
+      <item row="0" column="0">
+       <widget class="QCheckBox" name="checkSkipBlank">
+        <property name="text">
+         <string>Skip blank entities</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="2" column="0">
     <widget class="QGroupBox" name="groupBoxHeader">
      <property name="title">
       <string>Header</string>
@@ -108,7 +124,7 @@
      </layout>
     </widget>
    </item>
-   <item row="2" column="0">
+   <item row="3" column="0">
     <spacer name="verticalSpacer">
      <property name="orientation">
       <enum>Qt::Vertical</enum>
@@ -126,6 +142,7 @@
  <tabstops>
   <tabstop>comboBoxUnits</tabstop>
   <tabstop>checkBrepMode</tabstop>
+  <tabstop>checkSkipBlank</tabstop>
   <tabstop>lineEditCompany</tabstop>
   <tabstop>lineEditAuthor</tabstop>
   <tabstop>lineEditProduct</tabstop>

src/Mod/Part/Gui/DlgSettingsGeneral.cpp

@@ -120,6 +120,9 @@ void DlgImportExportIges::saveSettings()
     hGrp->SetBool("BrepMode", ui->checkBrepMode->isChecked());
     Interface_Static::SetIVal("write.iges.brep.mode",ui->checkBrepMode->isChecked() ? 1 : 0);
 
+    // Import
+    hGrp->SetBool("SkipBlankEntities", ui->checkSkipBlank->isChecked());
+
     // header info
     hGrp->SetASCII("Company", ui->lineEditCompany->text().toLatin1());
     hGrp->SetASCII("Author", ui->lineEditAuthor->text().toLatin1());
@@ -141,6 +144,9 @@ void DlgImportExportIges::loadSettings()
     bool brep = hGrp->GetBool("BrepMode", value > 0);
     ui->checkBrepMode->setChecked(brep);
 
+    // Import
+    ui->checkSkipBlank->setChecked(hGrp->GetBool("SkipBlankEntities", true));
+
     // header info
     ui->lineEditCompany->setText(QString::fromStdString(hGrp->GetASCII("Company",
         Interface_Static::CVal("write.iges.header.company"))));