Add NodeBeamSplitter.

Add port information for NodeDummy & NodeBeamSplitter

examples/uopa_graph.rs

 use opossum::optic_scenery::OpticScenery;
-use opossum::nodes::NodeDummy;
+use opossum::nodes::{NodeDummy, NodeBeamSplitter};
 
 use std::fs::File;
 use std::io::Write;
@@ -19,7 +19,7 @@ fn main() {
     let pump_main_amplifier_node = scenery.add_element("Pump Main-Amplifier", NodeDummy);
     let pump_compressor_node = scenery.add_element("Pump Compressor", NodeDummy);
     let pump_shg_node = scenery.add_element("Pump SHG", NodeDummy);
-    let pump_splitter_node = scenery.add_element("Pump Beam Splitter", NodeDummy);
+    let pump_splitter_node = scenery.add_element("Pump Beam Splitter", NodeBeamSplitter);
 
     scenery.connect_nodes(pulse_generation_split_node, uOPA_1_node);
     scenery.connect_nodes(pulse_generation_split_node, pump_pre_amplifier_node);

src/nodes/mod.rs

@@ -2,7 +2,9 @@
 mod node_dummy;
 mod node_reference;
 mod node_group;
+mod node_beam_splitter;
 
 pub use node_dummy::NodeDummy;
 pub use node_reference::NodeReference;
-pub use node_group::NodeGroup;
+pub use node_group::NodeGroup;
\ No newline at end of file
+pub use node_beam_splitter::NodeBeamSplitter;
\ No newline at end of file

src/nodes/node_beam_splitter.rs

+use crate::{optic_node::Optical, optic_ports::OpticPorts};
+
+pub struct NodeBeamSplitter;
+
+impl Optical for NodeBeamSplitter {
+  fn node_type(&self) -> &str {
+      "ideal beam splitter"
+  }
+  fn ports(&self) -> OpticPorts {
+      let mut ports=OpticPorts::new();
+      ports.add_input("input").unwrap();
+      ports.add_output("transmitted").unwrap();
+      ports.add_output("reflected").unwrap();
+      ports
+  }
+}
+

src/nodes/node_dummy.rs

 use crate::optic_node::Optical;
+use crate::optic_ports::OpticPorts;
 
 /// A fake / dummy component without any functions. It is mainly used for development and debugging purposes.
 pub struct NodeDummy;
@@ -8,4 +9,10 @@ impl Optical for NodeDummy {
     fn node_type(&self) -> &str {
         "dummy"
     }
-}
+    fn ports(&self) -> OpticPorts {
\ No newline at end of file
+        let mut ports=OpticPorts::new();
+        ports.add_input("front").unwrap();
+        ports.add_output("rear").unwrap();
+        ports
+    }
+}