Add first structure for using OpticNodes

examples/opticscenery.rs

-use opossum::optic_scenery::OpticScenery;
+use opossum::nodes::node_dummy::NodeDummy;
 use opossum::optic_node::OpticNode;
+use opossum::optic_scenery::OpticScenery;
 use std::fs::File;
 use std::io::Write;
 
@@ -9,7 +10,7 @@ fn main() {
     scenery.set_description("OpticScenery demo".into());
     println!("default opticscenery: {:?}", scenery);
     println!("export to `dot` format: {}", scenery.to_dot());
-    scenery.add_node(OpticNode::new("my optic".into()));
+    scenery.add_node(OpticNode::new("my optic".into(), Box::new(NodeDummy)));
     let path = "graph.dot";
     let mut output = File::create(path).unwrap();
     write!(output, "{}", scenery.to_dot()).unwrap();

src/lib.rs

@@ -3,4 +3,6 @@
 /// The basic structure containing the entire optical model
 pub mod optic_scenery;
 /// The basic structure representing an optical element
-pub mod optic_node;
+pub mod optic_node;
\ No newline at end of file
+
+pub mod nodes;
\ No newline at end of file

src/nodes/mod.rs

+pub mod node_dummy;
\ No newline at end of file

src/nodes/node_dummy.rs

+use crate::optic_node::Optical;
+
+pub struct NodeDummy;
+
+impl Optical for NodeDummy {
+
+}
\ No newline at end of file

src/optic_node.rs

-#[derive(Debug, Default)]
+use std::fmt::Debug;
 pub struct OpticNode {
     name: String,
+    node: Box<dyn Optical>,
 }
 
 impl OpticNode {
     /// Creates a new [`OpticNode`].
-    pub fn new(name: String) -> Self {
-        Self { name }
+    pub fn new(name: String, node: Box<dyn Optical>) -> Self {
+        Self { name, node }
     }
     /// Sets the name of this [`OpticNode`].
     pub fn set_name(&mut self, name: String) {
@@ -22,28 +23,36 @@ impl OpticNode {
     }
 }
 
+impl Debug for OpticNode {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.name)
+    }
+}
+pub trait Optical {}
+
 #[cfg(test)]
 mod test {
+    use crate::nodes::node_dummy::NodeDummy;
     use super::OpticNode;
     #[test]
     fn new() {
-      let node = OpticNode::new("Test".into());
-      assert_eq!(node.name, "Test".to_owned());
+        let node = OpticNode::new("Test".into(), Box::new(NodeDummy));
+        assert_eq!(node.name, "Test".to_owned());
     }
     #[test]
-    fn set_name() { 
-        let mut node = OpticNode::new("Test".into());
+    fn set_name() {
+        let mut node = OpticNode::new("Test".into(), Box::new(NodeDummy));
         node.set_name("Test2".into());
         assert_eq!(node.name, "Test2".to_owned())
     }
     #[test]
-    fn name() { 
-        let node = OpticNode::new("Test".into());
+    fn name() {
+        let node = OpticNode::new("Test".into(), Box::new(NodeDummy));
         assert_eq!(node.name(), "Test".to_owned())
     }
     #[test]
     fn to_dot() {
-        let node = OpticNode::new("Test".into());
+        let node = OpticNode::new("Test".into(), Box::new(NodeDummy));
         assert_eq!(node.to_dot(), "  \"Test\"\n".to_owned())
     }
 }

src/optic_scenery.rs

@@ -23,12 +23,12 @@ impl OpticScenery {
     }
     /// Export the optic graph into the `dot` format to be used in combination with the [`graphviz`](https://graphviz.org/) software.
     pub fn to_dot(&self) -> String {
-        let mut dot_string="digraph {\n".to_owned();
+        let mut dot_string = "digraph {\n".to_owned();
         dot_string.push_str(&format!("  label=\"{}\"\n", self.description));
         for node in self.g.node_weights() {
-            dot_string+=&node.to_dot();
+            dot_string += &node.to_dot();
         }
-        dot_string+="}";
+        dot_string += "}";
         dot_string
     }
     /// Analyze this [`OpticScenery`] using a given OpticAnalyzer.
@@ -50,41 +50,43 @@ mod test {
     use super::*;
     #[test]
     fn new() {
-        let scenery= OpticScenery::new();
+        let scenery = OpticScenery::new();
         assert_eq!(scenery.description, "".to_owned());
-        assert_eq!(scenery.g.edge_count(),0);
-        assert_eq!(scenery.g.node_count(),0);
+        assert_eq!(scenery.g.edge_count(), 0);
+        assert_eq!(scenery.g.node_count(), 0);
     }
     #[test]
     fn add_node() {
-        let mut scenery= OpticScenery::new();
-        scenery.add_node(OpticNode::new("Test".into()));
-        assert_eq!(scenery.g.node_count(),1);
+        let mut scenery = OpticScenery::new();
+        scenery.add_node(OpticNode::new("Test".into(), Box::new(NodeDummy)));
+        assert_eq!(scenery.g.node_count(), 1);
     }
     #[test]
     fn to_dot_empty() {
-        let mut scenery=OpticScenery::new();
+        let mut scenery = OpticScenery::new();
         scenery.set_description("Test".into());
-        assert_eq!(scenery.to_dot(),"digraph {\n  label=\"Test\"\n}");
+        assert_eq!(scenery.to_dot(), "digraph {\n  label=\"Test\"\n}");
     }
     #[test]
     fn to_dot_with_node() {
-        let mut scenery=OpticScenery::new();
+        let mut scenery = OpticScenery::new();
         scenery.set_description("SceneryTest".into());
-        scenery.add_node(OpticNode::new("Test".into()));
-        assert_eq!(scenery.to_dot(),"digraph {\n  label=\"SceneryTest\"\n  Test\n}");
+        scenery.add_node(OpticNode::new("Test".into(), Box::new(NodeDummy)));
+        assert_eq!(
+            scenery.to_dot(),
+            "digraph {\n  label=\"SceneryTest\"\n  Test\n}"
+        );
     }
     #[test]
     fn set_description() {
-        let mut scenery=OpticScenery::new();
+        let mut scenery = OpticScenery::new();
         scenery.set_description("Test".into());
         assert_eq!(scenery.description, "Test".to_owned())
     }
     #[test]
     fn description() {
-        let mut scenery=OpticScenery::new();
+        let mut scenery = OpticScenery::new();
         scenery.set_description("Test".into());
         assert_eq!(scenery.description(), "Test".to_owned())
     }
-
-}
+}
\ No newline at end of file