more advanced model for goJS

script/goJSmodel.js

@@ -1,33 +1,99 @@
-var myDiagram = $(go.Diagram, "myDiagramDiv",
-  {
-    "animationManager.isEnabled": false,
-    "undoManager.isEnabled": true  // enable undo & redo
-  });
+var myDiagram =
+  $(go.Diagram, "myDiagramDiv",
+    { // automatically scale the diagram to fit the viewport's size
+      initialAutoScale: go.Diagram.Uniform,
+      // disable user copying of parts
+      allowCopy: false,
+      // position all of the nodes and route all of the links
+      layout: $(go.LayeredDigraphLayout,
+        {
+          direction: 90,
+          layerSpacing: 10,
+          columnSpacing: 15,
+          setsPortSpots: false
+        })
+    });
+function convertKeyImage(key) {
+  if (!key) key = "NE";
+  return "https://www.nwoods.com/go/beatpaths/" + key + "_logo-75x50.png";
+}
+// replace the default Node template in the nodeTemplateMap
+myDiagram.nodeTemplate =
+  $(go.Node, "Vertical",  // the whole node panel
+    $(go.TextBlock,  // the text label
+      new go.Binding("text", "key")),
+    $(go.Picture,  // the icon showing the logo
+      // You should set the desiredSize (or width and height)
+      // whenever you know what size the Picture should be.
+      { desiredSize: new go.Size(75, 50) },
+      new go.Binding("source", "key", convertKeyImage))
+  );
+// replace the default Link template in the linkTemplateMap
+myDiagram.linkTemplate =
+  $(go.Link,  // the whole link panel
+    { curve: go.Link.Bezier, toShortLength: 2 },
+    $(go.Shape,  // the link shape
+      { strokeWidth: 1.5 }),
+    $(go.Shape,  // the arrowhead
+      { toArrow: "Standard", stroke: null })
+  );
 
-  // define a simple Node template
-  myDiagram.nodeTemplate =
-    $(go.Node, "Auto",  // the Shape will go around the TextBlock
-      $(go.Shape, "RoundedRectangle", { strokeWidth: 0 },
-        // Shape.fill is bound to Node.data.color
-        new go.Binding("fill", "color")),
-      $(go.TextBlock,
-        { margin: 8 },  // some room around the text
-        // TextBlock.text is bound to Node.data.key
-        new go.Binding("text", "key"))
-    );
+// the array of link data objects: the relationships between the nodes
+var linkDataArray = [
+  { from: "CAR", to: "ARI" },
+  { from: "ARI", to: "CIN" },
+  { from: "ARI", to: "GB" },
+  { from: "DEN", to: "GB" },
+  { from: "DEN", to: "CIN" },
+  { from: "DEN", to: "NE" },
+  { from: "GB", to: "WAS" },
+  { from: "WAS", to: "STL" },
+  { from: "CIN", to: "STL" },
+  { from: "STL", to: "SEA" },
+  { from: "SEA", to: "SF" },
+  { from: "SEA", to: "MIN" },
+  { from: "NE", to: "NYG" },
+  { from: "NE", to: "KC" },
+  { from: "MIN", to: "DET" },
+  { from: "MIN", to: "KC" },
+  { from: "KC", to: "HOU" },
+  { from: "KC", to: "BUF" },
+  { from: "KC", to: "BAL" },
+  { from: "KC", to: "OAK" },
+  { from: "BUF", to: "NYJ" },
+  { from: "BAL", to: "PIT" },
+  { from: "DET", to: "NO" },
+  { from: "DET", to: "PHI" },
+  { from: "DET", to: "CHI" },
+  { from: "HOU", to: "JAC" },
+  { from: "HOU", to: "TEN" },
+  { from: "PIT", to: "IND" },
+  { from: "PIT", to: "SD" },
+  { from: "OAK", to: "NYJ" },
+  { from: "OAK", to: "SD" },
+  { from: "NO", to: "ATL" },
+  { from: "NO", to: "NYG" },
+  { from: "PHI", to: "NYG" },
+  { from: "CHI", to: "TB" },
+  { from: "NYJ", to: "IND" },
+  { from: "NYJ", to: "CLE" },
+  { from: "IND", to: "TB" },
+  { from: "TB", to: "ATL" },
+  { from: "SD", to: "CLE" },
+  { from: "ATL", to: "DAL" },
+  { from: "ATL", to: "JAC" },
+  { from: "CLE", to: "TEN" },
+  { from: "DAL", to: "MIA" },
+  { from: "MIA", to: "TEN" }
+];
+
+// create the model and assign it to the Diagram
+myDiagram.model =
+  new go.GraphLinksModel(
+    { // automatically create node data objects for each "from" or "to" reference
+      // (set this property before setting the linkDataArray)
+      archetypeNodeData: {},
+      // process all of the link relationship data
+      linkDataArray: linkDataArray
+    });
 
-  // create the model data that will be represented by Nodes and Links
-  myDiagram.model = new go.GraphLinksModel(
-    [
-      { key: "Alpha", color: "lightblue" },
-      { key: "Beta", color: "orange" },
-      { key: "Gamma", color: "lightgreen" },
-      { key: "Delta", color: "pink" }
-    ],
-    [
-      { from: "Alpha", to: "Beta" },
-      { from: "Alpha", to: "Gamma" },
-      { from: "Beta", to: "Beta" },
-      { from: "Gamma", to: "Delta" },
-      { from: "Delta", to: "Alpha" }
-    ]);