Updated HemisphereLight docs

docs/api/lights/HemisphereLight.html

@@ -12,40 +12,73 @@
 
 		<h1>[name]</h1>
 
-		<div class="desc">A light source positioned directly above the scene.</div>
+		<div class="desc">
+			A light source positioned directly above the scene, with color fading from the sky color to the ground color.
+			This light cannot be used to cast shadows.
+		</div>
 
 		<h2>Example</h2>
 
-		<div>[example:webgl_lights_hemisphere lights / hemisphere ]</div>
-		<div>[example:misc_controls_pointerlock controls / pointerlock ]</div>
-		<div>[example:webgl_decals decals ]</div>
-		<div>[example:webgl_loader_collada_kinematics loader / collada / kinematics ]</div>
-		<div>[example:webgl_materials_lightmap materials / lightmap ]</div>
-		<div>[example:webgl_shaders_ocean shaders / ocean ]</div>
+		<div>
+			[example:webgl_lights_hemisphere lights / hemisphere ]<br />
+		  [example:misc_controls_pointerlock controls / pointerlock ]<br />
+		  [example:webgl_decals decals ]<br />
+		  [example:webgl_loader_collada_kinematics loader / collada / kinematics ]<br />
+		  [example:webgl_materials_lightmap materials / lightmap ]<br />
+		  [example:webgl_shaders_ocean shaders / ocean ]
+		</div>
 
-<code>var light = new THREE.HemisphereLight( 0xffffbb, 0x080820, 1 );
-scene.add( light );</code>
+<code>
+var light = new THREE.HemisphereLight( 0xffffbb, 0x080820, 1 );
+scene.add( light );
+</code>
 
 		<h2>Constructor</h2>
-
-
 		<h3>[name]( [page:Integer skyColor], [page:Integer groundColor], [page:Float intensity] )</h3>
-        <div>
-		[page:Integer skyColor] — Numeric value of the RGB sky color.<br />
-		[page:Integer groundColor] — Numeric value of the RGB ground color.<br />
-		[page:Float intensity] — Numeric value of the light's strength/intensity.
+    <div>
+		[page:Integer skyColor] - (optional) hexadecimal color of the sky. Default is 0xffffff.<br />
+		[page:Integer groundColor] - (optional) hexadecimal color of the ground. Default is 0xffffff.<br />
+		[page:Float intensity] - (optional) numeric value of the light's strength/intensity. Default is 1.<br /><br />
+
+		Creates a new [name].
 		</div>
 
 		<h2>Properties</h2>
+		<div>
+			See the base [page:Light Light] class for common properties.
+		</div>
+
+		<h3>[property:Boolean castShadow]</h3>
+		<div>
+			This is set to *undefined* in the constructor as hemisphere lights cannot cast shadows.
+		</div>
 
-		See the base [page:Light Light] class for common properties.
+
+		<h3>[property:Float color]</h3>
+		<div>
+			The light's sky color, as passed in the constructor.
+			Default is a new [page:Color] set to white (0xffffff).
+		</div>
 
 		<h3>[property:Float groundColor]</h3>
+		<div>
+			The light's ground color, as passed in the constructor.
+			Default is a new [page:Color] set to white (0xffffff).
+		</div>
 
+		<h3>[property:Boolean isHemisphereLight]</h3>
 		<div>
-			Light's ground color.<br />
+			Used to check whether this or derived classes are hemisphere lights. Default is *true*.<br /><br />
+
+			You should not change this, as it used internally for optimisation.
 		</div>
 
+		<h3>[property:Vector3 position]</h3>
+		<div>
+			This is set equal to [page:Object3D.DefaultUp], so that the light shines from the top down.
+		</div>
+
+
 
 		<h2>Methods</h2>
 
@@ -53,8 +86,8 @@ scene.add( light );</code>
 
 		<h3>[method:HemisphereLight copy]( [page:HemisphereLight source] )</h3>
 		<div>
-		<br />
-		Copies value of *source* to this HemisphereLight object.
+			Copies the value of [page:.color color], [page:.intensity intensity] and
+			[page:.groundColor groundColor] from the [page:Light source] light into this one.
 		</div>
 
 		<h2>Source</h2>