Clean up picker example

Author: vidartf

examples/Examples.ipynb

@@ -9,7 +9,7 @@
     "from pythreejs import *\n",
     "import numpy as np\n",
     "from IPython.display import display\n",
-    "from ipywidgets import HTML, Text\n",
+    "from ipywidgets import HTML, Text, Output, VBox\n",
     "from traitlets import link, dlink"
    ]
   },
@@ -124,9 +124,11 @@
     "\n",
     "# Set up picking responses:\n",
     "# Add a new marker when double-clicking:\n",
+    "out = Output()\n",
     "def f(change):\n",
     "    value = change['new']\n",
-    "    print('Clicked on %s' % value)\n",
+    "    with out:\n",
+    "        print('Clicked on %s' % (value,))\n",
     "    point = Mesh(geometry=SphereGeometry(radius=0.05), \n",
     "                 material=MeshLambertMaterial(color='red'),\n",
     "                 position=value)\n",
@@ -143,8 +145,8 @@
     "    h.value = 'Green point at (%.3f, %.3f, %.3f)' % tuple(change['new'])\n",
     "g({'new': hover_point.position})\n",
     "hover_picker.observe(g, names=['point'])\n",
-    "display(h)\n",
-    "display(renderer)"
+    "\n",
+    "display(VBox([h, renderer, out]))"
    ]
   },
   {
@@ -153,7 +155,6 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# when we change the z values of the geometry, we need to also change the height map\n",
     "surf_g.z = list((-z[::-1]).flat)\n",
     "surf.material.map = height_texture(-z[::-1])"
    ]