Adjust lighting and camera for decent initial rendering of polyhedra

Note that the version of three.js also incidentally bumped, since it's set
  to take the latest

package-lock.json

@@ -3535,9 +3535,9 @@
       }
     },
     "three": {
-      "version": "0.111.0",
-      "resolved": "https://registry.npmjs.org/three/-/three-0.111.0.tgz",
-      "integrity": "sha512-AcTqyGJ3H75AIusOuADy0LsP958QKQwm/YhABHFMzd6RFXPNVay1rlSbbG6WYv7KM72G2THMMwqbjQd4dVHMkQ=="
+      "version": "0.112.1",
+      "resolved": "https://registry.npmjs.org/three/-/three-0.112.1.tgz",
+      "integrity": "sha512-8I0O74hiYtKl3LgDNcPJbBGOlpekbcJ6fJnImmW3mFdeUFJ2H9Y3/UuUSW2sBdjrIlCM0gvOkaTEFlofO900TQ=="
     },
     "time-zone": {
       "version": "1.0.0",

src/dyna3.litcoffee

@@ -37,18 +37,23 @@ When you load dyna3, you should initially see a three-dimensional coordinate sys
         rwd = window.innerWidth
         rht = window.innerHeight
         renderer.setSize rwd, rht
-        renderer.setClearColor 0xeeeeee, 1.0
+        renderer.setClearColor 0xdddddd, 1.0
         document.body.appendChild renderer.domElement
 
         scene = new J3.Scene()
-        geometry = new J3.SphereBufferGeometry 1,5,5
-        material = new J3.MeshBasicMaterial {color: 0xff00ff}
+        geometry = new J3.IcosahedronBufferGeometry 1
+        material = new J3.MeshPhongMaterial {color: 0xff00ff}
         ball = new J3.Mesh geometry, material
         scene.add ball
         scene.add axes 10
 
+        ambient = new J3.HemisphereLight 0xffffff, 0xaaaaaa, 1
+        ambient.position.set 0.1, 0.1, 1
+        scene.add ambient
+
         camera = new J3.PerspectiveCamera 75, rwd/rht, 0.1, 1000
-        camera.position.z = 5
+        camera.up.set 0, 0, 1
+        camera.position.set 4, -1, 3
 
         controls = new J3x.TrackballControls camera, renderer.domElement