adds hit testing for hovers

components/code-panel/example-code.ts

@@ -0,0 +1,47 @@
+export default `// Basic nodes and globs
+
+const nodeA = new Node({
+  x: -100,
+  y: 0,
+});
+
+const nodeB = new Node({
+  x: 100,
+  y: 0,
+});
+
+const glob = new Glob({
+  start: nodeA,
+  end: nodeB,
+  D: { x: 0, y: 60 },
+  Dp: { x: 0, y: 90 },
+});
+
+// Something more interesting...
+
+const PI2 = Math.PI * 2,
+  center = { x: 0, y: 0 },
+  radius = 400;
+
+let prev;
+
+for (let i = 0; i < 21; i++) {
+  const t = i * (PI2 / 20);
+
+  const node = new Node({
+    x: center.x + radius * Math.sin(t),
+    y: center.y + radius * Math.cos(t),
+  });
+
+  if (prev !== undefined) {
+    new Glob({
+      start: prev,
+      end: node,
+      D: center,
+      Dp: center,
+    });
+  }
+
+  prev = node;
+}
+`