Initial commit

7 files changed, 2207 insertions, 0 deletions

diff --git a/src/main/kotlin/SimplexNoise.kt b/src/main/kotlin/SimplexNoise.kt
new file mode 100644
index 0000000..2a984e5
--- /dev/null
+++ b/src/main/kotlin/SimplexNoise.kt
@@ -0,0 +1,3 @@
+external class SimplexNoise {
+  fun noise2D(x: Double, y: Double) : Double
+}
\ No newline at end of file
diff --git a/src/main/kotlin/Terrain.kt b/src/main/kotlin/Terrain.kt
new file mode 100644
index 0000000..4f854ab
--- /dev/null
+++ b/src/main/kotlin/Terrain.kt
@@ -0,0 +1,230 @@
+import info.laht.threekt.THREE
+import info.laht.threekt.cameras.PerspectiveCamera
+import info.laht.threekt.external.controls.OrbitControls
+import info.laht.threekt.external.libs.datgui.GUIParams
+import info.laht.threekt.external.libs.datgui.NumberController
+import info.laht.threekt.external.libs.datgui.dat
+import info.laht.threekt.geometries.BoxGeometry
+import info.laht.threekt.geometries.PlaneGeometry
+import info.laht.threekt.lights.AmbientLight
+import info.laht.threekt.lights.PointLight
+import info.laht.threekt.materials.MeshBasicMaterial
+import info.laht.threekt.materials.MeshPhongMaterial
+import info.laht.threekt.math.ColorConstants
+import info.laht.threekt.objects.Mesh
+import info.laht.threekt.renderers.WebGLRenderer
+import info.laht.threekt.renderers.WebGLRendererParams
+import info.laht.threekt.scenes.Scene
+import kotlin.browser.document
+import kotlin.browser.window
+
+class Terrain {
+
+  private val renderer: WebGLRenderer
+  private val scene: Scene = Scene()
+  private val camera: PerspectiveCamera
+  private val controls: OrbitControls
+  private lateinit var simplexNoise: SimplexNoise
+  private lateinit var terrainMesh: Mesh
+  private lateinit var waterMesh: Mesh
+
+  private val size: Int = 256
+
+  val zoomFactor = 80
+  val scalingFactor = 11
+  val autoRotate = false
+
+  val waterHeight = 5
+  val snowHeightThreshold = 15
+
+  val showWireframe = false
+
+  init {
+
+    scene.add(AmbientLight(0xeeeeee))
+
+    PointLight(0xffffff)
+      .apply {
+        castShadow = true
+        position.set(0, 90, 200)
+      }.also(scene::add)
+
+    camera = PerspectiveCamera(75, window.innerWidth.toDouble() / window.innerHeight, 0.1, 1000)
+    camera.position.setZ(45)
+    camera.position.setY(-73)
+
+    renderer = WebGLRenderer(WebGLRendererParams(antialias = true))
+      .apply {
+        setClearColor(ColorConstants.black, 1)
+        setSize(window.innerWidth, window.innerHeight)
+      }
+
+    controls = OrbitControls(camera, renderer.domElement)
+
+    initGui()
+
+    seedNoise()
+
+    generateTerrain()
+
+    generateWater()
+
+    window.addEventListener("resize", {
+      camera.aspect = window.innerWidth.toDouble() / window.innerHeight
+      camera.updateProjectionMatrix()
+
+      renderer.setSize(window.innerWidth, window.innerHeight)
+    }, false)
+
+    document.getElementById("container")
+      ?.apply {
+        appendChild(renderer.domElement)
+      }
+
+  }
+
+  private fun seedNoise() {
+    simplexNoise = js("new SimplexNoise()") as SimplexNoise
+  }
+
+  fun reseedNoise() {
+    seedNoise()
+    generateTerrain()
+  }
+
+  private fun generateTerrain() {
+
+    if (this::terrainMesh.isInitialized) {
+      scene.remove(terrainMesh)
+    }
+
+    val terrainGeom = PlaneGeometry(100,100, size-1, size-1)
+
+    for (x in 0 until size) {
+      for (y in 0 until size) {
+
+        if (x == 0 || x == size-1 || y == 0 || y == size-1) {
+          terrainGeom.vertices[x + (y*size)].setZ(0)
+        } else {
+
+          var noise = simplexNoise.noise2D(x / zoomFactor.toDouble(), y / zoomFactor.toDouble())
+          noise += (0.01 * simplexNoise.noise2D(x.toDouble(), y.toDouble()))
+
+          noise += 1
+          noise *= scalingFactor
+          terrainGeom.vertices[x + (y * size)].setZ(noise)
+        }
+      }
+    }
+
+    applyHeightMapColour(terrainGeom)
+
+    terrainGeom.computeFaceNormals()
+    terrainGeom.computeVertexNormals()
+    terrainGeom.colorsNeedUpdate = true
+
+    val terrainMaterial = MeshPhongMaterial()
+      .apply {
+        if (showWireframe) {
+          wireframe = true
+          wireframeLinewidth = 1.0
+        }
+        vertexColors = THREE.FaceColors
+      }
+
+    terrainMesh = Mesh(terrainGeom, terrainMaterial)
+      .apply { receiveShadows = true }
+      .also(scene::add)
+  }
+
+  private fun applyHeightMapColour(planeGeometry: PlaneGeometry) {
+    planeGeometry.faces.forEach { face ->
+      val vertexes = listOf(planeGeometry.vertices[face.a].z, planeGeometry.vertices[face.b].z, planeGeometry.vertices[face.c].z)
+      val min = vertexes.min()!!
+
+      if (min < snowHeightThreshold) {
+        face.color?.set(ColorConstants.forestgreen)
+      } else if (min >= snowHeightThreshold) {
+        face.color?.set(ColorConstants.floralwhite)
+      }
+    }
+  }
+
+  private fun generateWater() {
+
+    if (this::waterMesh.isInitialized) {
+      scene.remove(waterMesh)
+    }
+
+    val waterGeom = BoxGeometry(99, 99, waterHeight)
+    val waterMaterial = MeshBasicMaterial()
+      .apply {
+        color.set(ColorConstants.aqua)
+        transparent = true
+        opacity = 0.7
+      }
+
+    waterMesh = Mesh(waterGeom, waterMaterial)
+      .also {
+        scene.add(it)
+        it.translateZ(waterHeight/2)
+      }
+  }
+
+  @Suppress("UNCHECKED_CAST_TO_EXTERNAL_INTERFACE")
+  fun initGui() {
+    dat.GUI(
+      GUIParams(
+        closed = false
+      )
+    ).also {
+
+      (it.add(this, "zoomFactor") as NumberController).apply {
+        min(10)
+        .max(200)
+        .step(5)
+        .onChange { generateTerrain() }
+      }
+
+      (it.add(this, "scalingFactor") as NumberController).apply {
+        min(0)
+        .max(50)
+        .step(1)
+        .onChange { generateTerrain() }
+      }
+
+      (it.add(this, "waterHeight") as NumberController).apply {
+        min(0)
+        .max(30)
+        .step(1)
+        .onChange { generateWater() }
+      }
+
+      (it.add(this, "snowHeightThreshold") as NumberController).apply {
+        min(0)
+        .max(30)
+        .step(1)
+        .onChange { generateTerrain() }
+      }
+
+      it.add(this, "reseedNoise")
+      it.add(this, "showWireframe").onChange { generateTerrain() }
+      it.add(this, "autoRotate")
+    }
+  }
+
+  fun animate() {
+
+    window.requestAnimationFrame {
+      if (autoRotate) {
+        terrainMesh.rotation.z += 0.005
+        waterMesh.rotation.z += 0.005
+//        println("x:${camera.position.x} y: ${camera.position.y} z:${camera.position.z}")
+      }
+      animate()
+    }
+
+    renderer.render(scene, camera)
+  }
+
+}
diff --git a/src/main/resources/deps/OrbitControls.js b/src/main/resources/deps/OrbitControls.js
new file mode 100644
index 0000000..6669341
--- /dev/null
+++ b/src/main/resources/deps/OrbitControls.js
@@ -0,0 +1,1042 @@
+/**
+ * @author qiao / https://github.com/qiao
+ * @author mrdoob / http://mrdoob.com
+ * @author alteredq / http://alteredqualia.com/
+ * @author WestLangley / http://github.com/WestLangley
+ * @author erich666 / http://erichaines.com
+ */
+
+// This set of controls performs orbiting, dollying (zooming), and panning.
+// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
+//
+//    Orbit - left mouse / touch: one finger move
+//    Zoom - middle mouse, or mousewheel / touch: two finger spread or squish
+//    Pan - right mouse, or arrow keys / touch: three finger swipe
+
+THREE.OrbitControls = function ( object, domElement ) {
+
+	this.object = object;
+
+	this.domElement = ( domElement !== undefined ) ? domElement : document;
+
+	// Set to false to disable this control
+	this.enabled = true;
+
+	// "target" sets the location of focus, where the object orbits around
+	this.target = new THREE.Vector3();
+
+	// How far you can dolly in and out ( PerspectiveCamera only )
+	this.minDistance = 0;
+	this.maxDistance = Infinity;
+
+	// How far you can zoom in and out ( OrthographicCamera only )
+	this.minZoom = 0;
+	this.maxZoom = Infinity;
+
+	// How far you can orbit vertically, upper and lower limits.
+	// Range is 0 to Math.PI radians.
+	this.minPolarAngle = 0; // radians
+	this.maxPolarAngle = Math.PI; // radians
+
+	// How far you can orbit horizontally, upper and lower limits.
+	// If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ].
+	this.minAzimuthAngle = - Infinity; // radians
+	this.maxAzimuthAngle = Infinity; // radians
+
+	// Set to true to enable damping (inertia)
+	// If damping is enabled, you must call controls.update() in your animation loop
+	this.enableDamping = false;
+	this.dampingFactor = 0.25;
+
+	// This option actually enables dollying in and out; left as "zoom" for backwards compatibility.
+	// Set to false to disable zooming
+	this.enableZoom = true;
+	this.zoomSpeed = 1.0;
+
+	// Set to false to disable rotating
+	this.enableRotate = true;
+	this.rotateSpeed = 1.0;
+
+	// Set to false to disable panning
+	this.enablePan = true;
+	this.keyPanSpeed = 7.0;	// pixels moved per arrow key push
+
+	// Set to true to automatically rotate around the target
+	// If auto-rotate is enabled, you must call controls.update() in your animation loop
+	this.autoRotate = false;
+	this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60
+
+	// Set to false to disable use of the keys
+	this.enableKeys = true;
+
+	// The four arrow keys
+	this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
+
+	// Mouse buttons
+	this.mouseButtons = { ORBIT: THREE.MOUSE.LEFT, ZOOM: THREE.MOUSE.MIDDLE, PAN: THREE.MOUSE.RIGHT };
+
+	// for reset
+	this.target0 = this.target.clone();
+	this.position0 = this.object.position.clone();
+	this.zoom0 = this.object.zoom;
+
+	//
+	// public methods
+	//
+
+	this.getPolarAngle = function () {
+
+		return spherical.phi;
+
+	};
+
+	this.getAzimuthalAngle = function () {
+
+		return spherical.theta;
+
+	};
+
+	this.saveState = function () {
+
+		scope.target0.copy( scope.target );
+		scope.position0.copy( scope.object.position );
+		scope.zoom0 = scope.object.zoom;
+
+	};
+
+	this.reset = function () {
+
+		scope.target.copy( scope.target0 );
+		scope.object.position.copy( scope.position0 );
+		scope.object.zoom = scope.zoom0;
+
+		scope.object.updateProjectionMatrix();
+		scope.dispatchEvent( changeEvent );
+
+		scope.update();
+
+		state = STATE.NONE;
+
+	};
+
+	// this method is exposed, but perhaps it would be better if we can make it private...
+	this.update = function () {
+
+		var offset = new THREE.Vector3();
+
+		// so camera.up is the orbit axis
+		var quat = new THREE.Quaternion().setFromUnitVectors( object.up, new THREE.Vector3( 0, 1, 0 ) );
+		var quatInverse = quat.clone().inverse();
+
+		var lastPosition = new THREE.Vector3();
+		var lastQuaternion = new THREE.Quaternion();
+
+		return function update() {
+
+			var position = scope.object.position;
+
+			offset.copy( position ).sub( scope.target );
+
+			// rotate offset to "y-axis-is-up" space
+			offset.applyQuaternion( quat );
+
+			// angle from z-axis around y-axis
+			spherical.setFromVector3( offset );
+
+			if ( scope.autoRotate && state === STATE.NONE ) {
+
+				rotateLeft( getAutoRotationAngle() );
+
+			}
+
+			spherical.theta += sphericalDelta.theta;
+			spherical.phi += sphericalDelta.phi;
+
+			// restrict theta to be between desired limits
+			spherical.theta = Math.max( scope.minAzimuthAngle, Math.min( scope.maxAzimuthAngle, spherical.theta ) );
+
+			// restrict phi to be between desired limits
+			spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );
+
+			spherical.makeSafe();
+
+
+			spherical.radius *= scale;
+
+			// restrict radius to be between desired limits
+			spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );
+
+			// move target to panned location
+			scope.target.add( panOffset );
+
+			offset.setFromSpherical( spherical );
+
+			// rotate offset back to "camera-up-vector-is-up" space
+			offset.applyQuaternion( quatInverse );
+
+			position.copy( scope.target ).add( offset );
+
+			scope.object.lookAt( scope.target );
+
+			if ( scope.enableDamping === true ) {
+
+				sphericalDelta.theta *= ( 1 - scope.dampingFactor );
+				sphericalDelta.phi *= ( 1 - scope.dampingFactor );
+
+			} else {
+
+				sphericalDelta.set( 0, 0, 0 );
+
+			}
+
+			scale = 1;
+			panOffset.set( 0, 0, 0 );
+
+			// update condition is:
+			// min(camera displacement, camera rotation in radians)^2 > EPS
+			// using small-angle approximation cos(x/2) = 1 - x^2 / 8
+
+			if ( zoomChanged ||
+				lastPosition.distanceToSquared( scope.object.position ) > EPS ||
+				8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {
+
+				scope.dispatchEvent( changeEvent );
+
+				lastPosition.copy( scope.object.position );
+				lastQuaternion.copy( scope.object.quaternion );
+				zoomChanged = false;
+
+				return true;
+
+			}
+
+			return false;
+
+		};
+
+	}();
+
+	this.dispose = function () {
+
+		scope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );
+		scope.domElement.removeEventListener( 'mousedown', onMouseDown, false );
+		scope.domElement.removeEventListener( 'wheel', onMouseWheel, false );
+
+		scope.domElement.removeEventListener( 'touchstart', onTouchStart, false );
+		scope.domElement.removeEventListener( 'touchend', onTouchEnd, false );
+		scope.domElement.removeEventListener( 'touchmove', onTouchMove, false );
+
+		document.removeEventListener( 'mousemove', onMouseMove, false );
+		document.removeEventListener( 'mouseup', onMouseUp, false );
+
+		window.removeEventListener( 'keydown', onKeyDown, false );
+
+		//scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?
+
+	};
+
+	//
+	// internals
+	//
+
+	var scope = this;
+
+	var changeEvent = { type: 'change' };
+	var startEvent = { type: 'start' };
+	var endEvent = { type: 'end' };
+
+	var STATE = { NONE: - 1, ROTATE: 0, DOLLY: 1, PAN: 2, TOUCH_ROTATE: 3, TOUCH_DOLLY: 4, TOUCH_PAN: 5 };
+
+	var state = STATE.NONE;
+
+	var EPS = 0.000001;
+
+	// current position in spherical coordinates
+	var spherical = new THREE.Spherical();
+	var sphericalDelta = new THREE.Spherical();
+
+	var scale = 1;
+	var panOffset = new THREE.Vector3();
+	var zoomChanged = false;
+
+	var rotateStart = new THREE.Vector2();
+	var rotateEnd = new THREE.Vector2();
+	var rotateDelta = new THREE.Vector2();
+
+	var panStart = new THREE.Vector2();
+	var panEnd = new THREE.Vector2();
+	var panDelta = new THREE.Vector2();
+
+	var dollyStart = new THREE.Vector2();
+	var dollyEnd = new THREE.Vector2();
+	var dollyDelta = new THREE.Vector2();
+
+	function getAutoRotationAngle() {
+
+		return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
+
+	}
+
+	function getZoomScale() {
+
+		return Math.pow( 0.95, scope.zoomSpeed );
+
+	}
+
+	function rotateLeft( angle ) {
+
+		sphericalDelta.theta -= angle;
+
+	}
+
+	function rotateUp( angle ) {
+
+		sphericalDelta.phi -= angle;
+
+	}
+
+	var panLeft = function () {
+
+		var v = new THREE.Vector3();
+
+		return function panLeft( distance, objectMatrix ) {
+
+			v.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix
+			v.multiplyScalar( - distance );
+
+			panOffset.add( v );
+
+		};
+
+	}();
+
+	var panUp = function () {
+
+		var v = new THREE.Vector3();
+
+		return function panUp( distance, objectMatrix ) {
+
+			v.setFromMatrixColumn( objectMatrix, 1 ); // get Y column of objectMatrix
+			v.multiplyScalar( distance );
+
+			panOffset.add( v );
+
+		};
+
+	}();
+
+	// deltaX and deltaY are in pixels; right and down are positive
+	var pan = function () {
+
+		var offset = new THREE.Vector3();
+
+		return function pan( deltaX, deltaY ) {
+
+			var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+
+			if ( scope.object.isPerspectiveCamera ) {
+
+				// perspective
+				var position = scope.object.position;
+				offset.copy( position ).sub( scope.target );
+				var targetDistance = offset.length();
+
+				// half of the fov is center to top of screen
+				targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );
+
+				// we actually don't use screenWidth, since perspective camera is fixed to screen height
+				panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );
+				panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );
+
+			} else if ( scope.object.isOrthographicCamera ) {
+
+				// orthographic
+				panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
+				panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );
+
+			} else {
+
+				// camera neither orthographic nor perspective
+				console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
+				scope.enablePan = false;
+
+			}
+
+		};
+
+	}();
+
+	function dollyIn( dollyScale ) {
+
+		if ( scope.object.isPerspectiveCamera ) {
+
+			scale /= dollyScale;
+
+		} else if ( scope.object.isOrthographicCamera ) {
+
+			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );
+			scope.object.updateProjectionMatrix();
+			zoomChanged = true;
+
+		} else {
+
+			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
+			scope.enableZoom = false;
+
+		}
+
+	}
+
+	function dollyOut( dollyScale ) {
+
+		if ( scope.object.isPerspectiveCamera ) {
+
+			scale *= dollyScale;
+
+		} else if ( scope.object.isOrthographicCamera ) {
+
+			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );
+			scope.object.updateProjectionMatrix();
+			zoomChanged = true;
+
+		} else {
+
+			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
+			scope.enableZoom = false;
+
+		}
+
+	}
+
+	//
+	// event callbacks - update the object state
+	//
+
+	function handleMouseDownRotate( event ) {
+
+		//console.log( 'handleMouseDownRotate' );
+
+		rotateStart.set( event.clientX, event.clientY );
+
+	}
+
+	function handleMouseDownDolly( event ) {
+
+		//console.log( 'handleMouseDownDolly' );
+
+		dollyStart.set( event.clientX, event.clientY );
+
+	}
+
+	function handleMouseDownPan( event ) {
+
+		//console.log( 'handleMouseDownPan' );
+
+		panStart.set( event.clientX, event.clientY );
+
+	}
+
+	function handleMouseMoveRotate( event ) {
+
+		//console.log( 'handleMouseMoveRotate' );
+
+		rotateEnd.set( event.clientX, event.clientY );
+		rotateDelta.subVectors( rotateEnd, rotateStart );
+
+		var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+
+		// rotating across whole screen goes 360 degrees around
+		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
+
+		// rotating up and down along whole screen attempts to go 360, but limited to 180
+		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
+
+		rotateStart.copy( rotateEnd );
+
+		scope.update();
+
+	}
+
+	function handleMouseMoveDolly( event ) {
+
+		//console.log( 'handleMouseMoveDolly' );
+
+		dollyEnd.set( event.clientX, event.clientY );
+
+		dollyDelta.subVectors( dollyEnd, dollyStart );
+
+		if ( dollyDelta.y > 0 ) {
+
+			dollyIn( getZoomScale() );
+
+		} else if ( dollyDelta.y < 0 ) {
+
+			dollyOut( getZoomScale() );
+
+		}
+
+		dollyStart.copy( dollyEnd );
+
+		scope.update();
+
+	}
+
+	function handleMouseMovePan( event ) {
+
+		//console.log( 'handleMouseMovePan' );
+
+		panEnd.set( event.clientX, event.clientY );
+
+		panDelta.subVectors( panEnd, panStart );
+
+		pan( panDelta.x, panDelta.y );
+
+		panStart.copy( panEnd );
+
+		scope.update();
+
+	}
+
+	function handleMouseUp( event ) {
+
+		// console.log( 'handleMouseUp' );
+
+	}
+
+	function handleMouseWheel( event ) {
+
+		// console.log( 'handleMouseWheel' );
+
+		if ( event.deltaY < 0 ) {
+
+			dollyOut( getZoomScale() );
+
+		} else if ( event.deltaY > 0 ) {
+
+			dollyIn( getZoomScale() );
+
+		}
+
+		scope.update();
+
+	}
+
+	function handleKeyDown( event ) {
+
+		//console.log( 'handleKeyDown' );
+
+		switch ( event.keyCode ) {
+
+			case scope.keys.UP:
+				pan( 0, scope.keyPanSpeed );
+				scope.update();
+				break;
+
+			case scope.keys.BOTTOM:
+				pan( 0, - scope.keyPanSpeed );
+				scope.update();
+				break;
+
+			case scope.keys.LEFT:
+				pan( scope.keyPanSpeed, 0 );
+				scope.update();
+				break;
+
+			case scope.keys.RIGHT:
+				pan( - scope.keyPanSpeed, 0 );
+				scope.update();
+				break;
+
+		}
+
+	}
+
+	function handleTouchStartRotate( event ) {
+
+		//console.log( 'handleTouchStartRotate' );
+
+		rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+
+	}
+
+	function handleTouchStartDolly( event ) {
+
+		//console.log( 'handleTouchStartDolly' );
+
+		var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
+		var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
+
+		var distance = Math.sqrt( dx * dx + dy * dy );
+
+		dollyStart.set( 0, distance );
+
+	}
+
+	function handleTouchStartPan( event ) {
+
+		//console.log( 'handleTouchStartPan' );
+
+		panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+
+	}
+
+	function handleTouchMoveRotate( event ) {
+
+		//console.log( 'handleTouchMoveRotate' );
+
+		rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+		rotateDelta.subVectors( rotateEnd, rotateStart );
+
+		var element = scope.domElement === document ? scope.domElement.body : scope.domElement;
+
+		// rotating across whole screen goes 360 degrees around
+		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientWidth * scope.rotateSpeed );
+
+		// rotating up and down along whole screen attempts to go 360, but limited to 180
+		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight * scope.rotateSpeed );
+
+		rotateStart.copy( rotateEnd );
+
+		scope.update();
+
+	}
+
+	function handleTouchMoveDolly( event ) {
+
+		//console.log( 'handleTouchMoveDolly' );
+
+		var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
+		var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
+
+		var distance = Math.sqrt( dx * dx + dy * dy );
+
+		dollyEnd.set( 0, distance );
+
+		dollyDelta.subVectors( dollyEnd, dollyStart );
+
+		if ( dollyDelta.y > 0 ) {
+
+			dollyOut( getZoomScale() );
+
+		} else if ( dollyDelta.y < 0 ) {
+
+			dollyIn( getZoomScale() );
+
+		}
+
+		dollyStart.copy( dollyEnd );
+
+		scope.update();
+
+	}
+
+	function handleTouchMovePan( event ) {
+
+		//console.log( 'handleTouchMovePan' );
+
+		panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
+
+		panDelta.subVectors( panEnd, panStart );
+
+		pan( panDelta.x, panDelta.y );
+
+		panStart.copy( panEnd );
+
+		scope.update();
+
+	}
+
+	function handleTouchEnd( event ) {
+
+		//console.log( 'handleTouchEnd' );
+
+	}
+
+	//
+	// event handlers - FSM: listen for events and reset state
+	//
+
+	function onMouseDown( event ) {
+
+		if ( scope.enabled === false ) return;
+
+		event.preventDefault();
+
+		switch ( event.button ) {
+
+			case scope.mouseButtons.ORBIT:
+
+				if ( scope.enableRotate === false ) return;
+
+				handleMouseDownRotate( event );
+
+				state = STATE.ROTATE;
+
+				break;
+
+			case scope.mouseButtons.ZOOM:
+
+				if ( scope.enableZoom === false ) return;
+
+				handleMouseDownDolly( event );
+
+				state = STATE.DOLLY;
+
+				break;
+
+			case scope.mouseButtons.PAN:
+
+				if ( scope.enablePan === false ) return;
+
+				handleMouseDownPan( event );
+
+				state = STATE.PAN;
+
+				break;
+
+		}
+
+		if ( state !== STATE.NONE ) {
+
+			document.addEventListener( 'mousemove', onMouseMove, false );
+			document.addEventListener( 'mouseup', onMouseUp, false );
+
+			scope.dispatchEvent( startEvent );
+
+		}
+
+	}
+
+	function onMouseMove( event ) {
+
+		if ( scope.enabled === false ) return;
+
+		event.preventDefault();
+
+		switch ( state ) {
+
+			case STATE.ROTATE:
+
+				if ( scope.enableRotate === false ) return;
+
+				handleMouseMoveRotate( event );
+
+				break;
+
+			case STATE.DOLLY:
+
+				if ( scope.enableZoom === false ) return;
+
+				handleMouseMoveDolly( event );
+
+				break;
+
+			case STATE.PAN:
+
+				if ( scope.enablePan === false ) return;
+
+				handleMouseMovePan( event );
+
+				break;
+
+		}
+
+	}
+
+	function onMouseUp( event ) {
+
+		if ( scope.enabled === false ) return;
+
+		handleMouseUp( event );
+
+		document.removeEventListener( 'mousemove', onMouseMove, false );
+		document.removeEventListener( 'mouseup', onMouseUp, false );
+
+		scope.dispatchEvent( endEvent );
+
+		state = STATE.NONE;
+
+	}
+
+	function onMouseWheel( event ) {
+
+		if ( scope.enabled === false || scope.enableZoom === false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;
+
+		event.preventDefault();
+		event.stopPropagation();
+
+		handleMouseWheel( event );
+
+		scope.dispatchEvent( startEvent ); // not sure why these are here...
+		scope.dispatchEvent( endEvent );
+
+	}
+
+	function onKeyDown( event ) {
+
+		if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;
+
+		handleKeyDown( event );
+
+	}
+
+	function onTouchStart( event ) {
+
+		if ( scope.enabled === false ) return;
+
+		switch ( event.touches.length ) {
+
+			case 1:	// one-fingered touch: rotate
+
+				if ( scope.enableRotate === false ) return;
+
+				handleTouchStartRotate( event );
+
+				state = STATE.TOUCH_ROTATE;
+
+				break;
+
+			case 2:	// two-fingered touch: dolly
+
+				if ( scope.enableZoom === false ) return;
+
+				handleTouchStartDolly( event );
+
+				state = STATE.TOUCH_DOLLY;
+
+				break;
+
+			case 3: // three-fingered touch: pan
+
+				if ( scope.enablePan === false ) return;
+
+				handleTouchStartPan( event );
+
+				state = STATE.TOUCH_PAN;
+
+				break;
+
+			default:
+
+				state = STATE.NONE;
+
+		}
+
+		if ( state !== STATE.NONE ) {
+
+			scope.dispatchEvent( startEvent );
+
+		}
+
+	}
+
+	function onTouchMove( event ) {
+
+		if ( scope.enabled === false ) return;
+
+		event.preventDefault();
+		event.stopPropagation();
+
+		switch ( event.touches.length ) {
+
+			case 1: // one-fingered touch: rotate
+
+				if ( scope.enableRotate === false ) return;
+				if ( state !== STATE.TOUCH_ROTATE ) return; // is this needed?...
+
+				handleTouchMoveRotate( event );
+
+				break;
+
+			case 2: // two-fingered touch: dolly
+
+				if ( scope.enableZoom === false ) return;
+				if ( state !== STATE.TOUCH_DOLLY ) return; // is this needed?...
+
+				handleTouchMoveDolly( event );
+
+				break;
+
+			case 3: // three-fingered touch: pan
+
+				if ( scope.enablePan === false ) return;
+				if ( state !== STATE.TOUCH_PAN ) return; // is this needed?...
+
+				handleTouchMovePan( event );
+
+				break;
+
+			default:
+
+				state = STATE.NONE;
+
+		}
+
+	}
+
+	function onTouchEnd( event ) {
+
+		if ( scope.enabled === false ) return;
+
+		handleTouchEnd( event );
+
+		scope.dispatchEvent( endEvent );
+
+		state = STATE.NONE;
+
+	}
+
+	function onContextMenu( event ) {
+
+		if ( scope.enabled === false ) return;
+
+		event.preventDefault();
+
+	}
+
+	//
+
+	scope.domElement.addEventListener( 'contextmenu', onContextMenu, false );
+
+	scope.domElement.addEventListener( 'mousedown', onMouseDown, false );
+	scope.domElement.addEventListener( 'wheel', onMouseWheel, false );
+
+	scope.domElement.addEventListener( 'touchstart', onTouchStart, false );
+	scope.domElement.addEventListener( 'touchend', onTouchEnd, false );
+	scope.domElement.addEventListener( 'touchmove', onTouchMove, false );
+
+	window.addEventListener( 'keydown', onKeyDown, false );
+
+	// force an update at start
+
+	this.update();
+
+};
+
+THREE.OrbitControls.prototype = Object.create( THREE.EventDispatcher.prototype );
+THREE.OrbitControls.prototype.constructor = THREE.OrbitControls;
+
+Object.defineProperties( THREE.OrbitControls.prototype, {
+
+	center: {
+
+		get: function () {
+
+			console.warn( 'THREE.OrbitControls: .center has been renamed to .target' );
+			return this.target;
+
+		}
+
+	},
+
+	// backward compatibility
+
+	noZoom: {
+
+		get: function () {
+
+			console.warn( 'THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead.' );
+			return ! this.enableZoom;
+
+		},
+
+		set: function ( value ) {
+
+			console.warn( 'THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead.' );
+			this.enableZoom = ! value;
+
+		}
+
+	},
+
+	noRotate: {
+
+		get: function () {
+
+			console.warn( 'THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead.' );
+			return ! this.enableRotate;
+
+		},
+
+		set: function ( value ) {
+
+			console.warn( 'THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead.' );
+			this.enableRotate = ! value;
+
+		}
+
+	},
+
+	noPan: {
+
+		get: function () {
+
+			console.warn( 'THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead.' );
+			return ! this.enablePan;
+
+		},
+
+		set: function ( value ) {
+
+			console.warn( 'THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead.' );
+			this.enablePan = ! value;
+
+		}
+
+	},
+
+	noKeys: {
+
+		get: function () {