working export

crates/opencascade-sys/build.rs

@@ -17,6 +17,7 @@ const OCCT_LIBS: &[&str] = &[
     "TKBRep",
     "TKPrim",
     "TKDESTEP",
+    "TKDEIGES",
     "TKDESTL",
     "TKMesh",
     "TKShHealing",

crates/opencascade-sys/include/wrapper.hxx

@@ -382,11 +382,15 @@ inline IFSelect_ReturnStatus transfer_shape(STEPControl_Writer &writer, const To
 
 inline void compute_model(IGESControl_Writer &writer) { writer.ComputeModel(); }
 
+inline bool add_shape(IGESControl_Writer &writer, const TopoDS_Shape &theShape) { return writer.AddShape(theShape); }
+
 inline IFSelect_ReturnStatus write_step(STEPControl_Writer &writer, rust::String theFileName) {
   return writer.Write(theFileName.c_str());
 }
 
-inline void write_iges(IGESControl_Writer &writer, rust::String theFileName) { writer.Write(theFileName.c_str()); }
+inline bool write_iges(IGESControl_Writer &writer, rust::String theFileName) {
+  return writer.Write(theFileName.c_str());
+}
 
 inline bool write_stl(StlAPI_Writer &writer, const TopoDS_Shape &theShape, rust::String theFileName) {
   return writer.Write(theShape, theFileName.c_str());

crates/opencascade-sys/src/lib.rs

@@ -1188,12 +1188,13 @@ pub mod ffi {
             writer: Pin<&mut STEPControl_Writer>,
             shape: &TopoDS_Shape,
         ) -> IFSelect_ReturnStatus;
+        pub fn add_shape(writer: Pin<&mut IGESControl_Writer>, shape: &TopoDS_Shape) -> bool;
         pub fn compute_model(writer: Pin<&mut IGESControl_Writer>);
         pub fn write_step(
             writer: Pin<&mut STEPControl_Writer>,
             filename: String,
         ) -> IFSelect_ReturnStatus;
-        pub fn write_iges(writer: Pin<&mut IGESControl_Writer>, filename: String);
+        pub fn write_iges(writer: Pin<&mut IGESControl_Writer>, filename: String) -> bool;
 
         type StlAPI_Writer;
 

crates/opencascade/src/primitives/shape.rs

@@ -526,7 +526,7 @@ impl Shape {
         reader.pin_mut().TransferRoots(&ffi::Message_ProgressRange_ctor());
 
         if status != ffi::IFSelect_ReturnStatus::IFSelect_RetDone {
-            return Err(Error::StepReadFailed);
+            return Err(Error::IgesReadFailed);
         }
 
         let inner = ffi::one_shape_iges(&reader);
@@ -536,9 +536,22 @@ impl Shape {
 
     pub fn write_iges(&self, path: impl AsRef<Path>) -> Result<(), Error> {
         let mut writer = ffi::IGESControl_Writer_ctor();
+
+        let success = ffi::add_shape(writer.pin_mut(), &self.inner);
+
+        if !success {
+            return Err(Error::IgesWriteFailed);
+        }
+
         ffi::compute_model(writer.pin_mut());
-        ffi::write_iges(writer.pin_mut(), path.as_ref().to_string_lossy().to_string());
-        Ok(())
+        let success =
+            ffi::write_iges(writer.pin_mut(), path.as_ref().to_string_lossy().to_string());
+
+        if success {
+            Ok(())
+        } else {
+            Err(Error::IgesWriteFailed)
+        }
     }
 
     #[must_use]

examples/src/write_model.rs

@@ -49,7 +49,7 @@ fn determine_format(extension: &OsStr) -> Option<Format> {
     match extension.to_ascii_lowercase().as_bytes() {
         b"step" | b"stp" => Some(Format::Step),
         b"stl" => Some(Format::Stl),
-        b"iges" | b"stp" => Some(Format::Iges),
+        b"iges" | b"igs" => Some(Format::Iges),
         _ => None,
     }
 }