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HTML 

              
                <div class="wrapper">
    <div class="controls"><form>
        <select id="generator">
            <option value="mr">Generator: Math.random</option>
            <option value="randu" selected>Generator: RANDU</option>
            <option value="wh">Generator: Wichmann-Hill</option>
        </select>
        <br/>
        <br/>
        <div class="regenerate">
            <label for="mr-button">Math.random:</label>
            <input id="mr-button" type="button" value="Regenerate" disabled/>
        </div>
        <br/>
        <div class="seed randu">
            <label for="seed-randu">RANDU seed:</label>
            <input id="seed-randu" type="number" min="1" max="2147483647" step="1" value="1">
            <output for="seed-randu">(Range: 1 - 2147483647)</output>
        </div>
        <br/>
        <div class="seed A wh">
            <label for="seed-wh-A">WH seed A:</label>
            <input id="seed--wh-A" type="number" min="1" max="30268" step="1" value="1">
            <output for="seed-A">(Range: 1 - 30268)</output>
        </div>
        <div class="seed B wh">
            <label for="seed-wh-B">WH seed B:</label>
            <input id="seed--wh-B" type="number" min="1" max="30306" step="1" value="2">
            <output for="seed-wh-B">(Range: 1 - 30306)</output>
        </div>
        <div class="seed C wh">
            <label for="seed-wh-C">WH seed C:</label>
            <input id="seed--wh-C" type="number" min="1" max="30322" step="1" value="3">
            <output for="seed-C">(Range: 1 - 30322)</output>
        </div>   
    </form></div>
    <div id="random-box" class="scene"></div>
</div>
!

CSS 

              
                body{
	margin-left: auto;
	margin-right: auto;
}

.wrapper{
	width: 600px;
	margin-left: auto;
	margin-right: auto;	
}

input[type="button"]{
	cursor: pointer;	
}

input[type="number"]{
	text-align: right;
	width: 100px;
}

input:disabled{
	visibility: hidden;	
}

label, output{
	display: inline-block;	
}

label{
	width: 100px;	
}

output{
	margin-left: 10px;
	color: #999999	
}

.scene{
	width: 600px;
	height: 600px;
	margin-top: 30px;
}
!

JS 

              
                (function(){

	"use strict";
	
	$(".controls form")[0].reset();
	var $container = $("#random-box");
	

	var randu = function(seed){
		
		if(!isFinite(seed)){
			throw new Error("Seed not a finite number");
		}
		
		var x = Math.round(seed);
		var a = 65539;
		var m = Math.pow(2, 31);
	   
		if(x<1 || x>=m){
			throw new Error("Seed out of bounds");
		}
	
		return function(){
			x = (a*x)%m;
			return x/m;
		};
			
	};
	
	
	var wh = function(seeds){
	  
		if(seeds.length<3){
			throw new Error("Not enough seeds");
		}
	   
		var xA = Math.round(seeds[0]);
		var aA = 171;
		var mA = 30269;
	   
		var xB = Math.round(seeds[1]);
		var aB = 172;
		var mB = 30307;
	   
		var xC = Math.round(seeds[2]);
		var aC = 170;
		var mC = 30323;
		
		if(!isFinite(xA) || !isFinite(xB) || !isFinite(xC)){
			throw new Error("Seed not a finite number");
		}
	   
		if(Math.min(xA,xB,xC)<1 || xA>=mA || xB>=mB || xC>=mC){
			throw new Error("Seed out of bounds");
		}  
	
		return function(){
			xA = (aA*xA)%mA;
			xB = (aB*xB)%mB;
			xC = (aC*xC)%mC;
			return (xA/mA + xB/mB + xC/mC) % 1;
		};
		  
	};
	
	
	var generateData = function(nextRandom, nTriplets){
		var data = [];
		for(var i=0; i<nTriplets; i++){
			data.push({x:nextRandom(), y:nextRandom(), z:nextRandom()}); 	
		}
		return data;
	};
	
		
	
	var redraw = (function(container, sceneWidth, sceneHeight){
	
		var scene = new THREE.Scene();
		
		var renderer = new THREE.WebGLRenderer();
		renderer.setClearColor(0x222222);
		renderer.setSize(sceneWidth, sceneHeight);
	
		container.appendChild(renderer.domElement);
		

		(function createBox(){
			
			var material = new THREE.LineBasicMaterial({
				color: 0x999999,
				linewidth: 2
			});
			
			var geometry = new THREE.Geometry();
			geometry.vertices.push(new THREE.Vector3(0, 0, 0));
			geometry.vertices.push(new THREE.Vector3(0, 0, 1));
			geometry.vertices.push(new THREE.Vector3(0, 1, 1));
			geometry.vertices.push(new THREE.Vector3(1, 1, 1));
			geometry.vertices.push(new THREE.Vector3(1, 1, 0));
			geometry.vertices.push(new THREE.Vector3(1, 0, 0));
			geometry.vertices.push(new THREE.Vector3(0, 0, 0));
			geometry.vertices.push(new THREE.Vector3(0, 1, 0));
			geometry.vertices.push(new THREE.Vector3(0, 1, 1));
			geometry.vertices.push(new THREE.Vector3(0, 1, 0));
			geometry.vertices.push(new THREE.Vector3(1, 1, 0));
			geometry.vertices.push(new THREE.Vector3(1, 0, 0));
			geometry.vertices.push(new THREE.Vector3(1, 0, 1));
			geometry.vertices.push(new THREE.Vector3(0, 0, 1));
			geometry.vertices.push(new THREE.Vector3(1, 0, 1));
			geometry.vertices.push(new THREE.Vector3(1, 1, 1));
			
			scene.add(new THREE.Line(geometry, material));
			
		})();			
			

		var points = (function(){
			
			var name = "points";
			
			var pointMaterial = new THREE.MeshBasicMaterial({
				color: "rgb(73,145,248)",
				transparent: true,
				opacity: 0.5
			});
			
			var clearPoints = function(){
				scene.remove(scene.getObjectByName(name));
			};
			
			var addPoint = function(coords){
				var pointSize = 0.015;
				var pointGeometry = new THREE.BoxGeometry(pointSize, pointSize, pointSize);
				var point = new THREE.Mesh(pointGeometry, pointMaterial);
				point.position.x = coords.x;
				point.position.y = coords.y;
				point.position.z = coords.z;
				return point;
			};
						
			var createPoints = function(data){
				var geometry = new THREE.Geometry();
				var n = data.length;
				for (var i=0; i<n; i++){
					var pointMesh = addPoint(data[i]);
					pointMesh.updateMatrix();
					geometry.merge(pointMesh.geometry, pointMesh.matrix);
				}
				var points = new THREE.Mesh(geometry, pointMaterial);
				points.name = name;
				scene.add(points);
			};
			
			return Object.freeze({
				clear: function(){clearPoints(); return this;},
				create: function(data){createPoints(data); return this;}
			});
			
		})();
		
		
		var render = (function(){
			
			var camera = new THREE.PerspectiveCamera(45, sceneWidth/sceneHeight, 1, 500);
			camera.position.x = 2;
			camera.position.y = 2;
			camera.position.z = 1.75;
			camera.up = new THREE.Vector3(0, 0, 1);
			camera.lookAt(scene.position);
			
			var controls = new THREE.TrackballControls(camera, renderer.domElement);
			controls.target.set(0.5, 0.5, 0.5); //rotate around centre of box
			
			var clock = new THREE.Clock();	
			
			return function(){
				requestAnimationFrame(render);
				controls.update(clock.getDelta());
				renderer.render(scene, camera);
			};
			
		})();
		
		render();
		
		
		return function(data){
			points.clear().create(data);
		};
		
		
	})($container[0], parseInt($container.css("width"),10), parseInt($container.css("height"),10));
	
	
	var info = {
		generator: undefined,
		randuSeed: undefined,
		whSeeds: []
	};

	
	var update = function(info){
		var n = Math.floor(10000/3);
		var data = [];
		var generator = info.generator;
		if(generator==="mr"){
			data = generateData(Math.random, n);
		} else if(generator==="randu"){
			data = generateData(randu(info.randuSeed), n);
		} else if(generator==="wh"){
			data = generateData(wh(info.whSeeds), n);	
		}
		redraw(data);
	};

	(function(){
				
		var getSeed = function($input){
			
			var valString = $input.val();
			var valInt = parseInt(valString, 10);
			
			if(!isFinite(valInt)){ //if we don't have a number at all
				valInt = parseInt($input.attr("value"), 10); //reset
				$input.val(valInt);
			}
			
			var valFloat = parseFloat(valString);
			var valMin = parseInt($input.attr("min"), 10);
			var valMax = parseInt($input.attr("max"), 10);
			
			if(valFloat !== valInt){ //if we don't have an integer...
				$input.val(valInt); //then set input box so that we do...
			}
			
			if(valInt < valMin){ //too small
				valInt = valMin;
				$input.val(valInt);
				
			} else if(valInt > valMax){ //too big
				valInt = valMax;
				$input.val(valInt);	
			}
			
			return valInt;
		};
		
		
		(function(){
		
			var $randuSeed = $(".seed.randu input");
			
			var setSeedInfo = function(){
				info.randuSeed = getSeed($randuSeed);	
			};
			setSeedInfo();
		
			$randuSeed.on("change", function(){
				setSeedInfo();
				update(info);
			});
		
		})();
		
		
		$(".seed.wh input").each(function(index){
		
			var $seed = $(this);
			
			var setSeedInfo = (function(){
				var seedIndex = index;
				return function(){
					info.whSeeds[seedIndex] = getSeed($seed);
				};
			})();
			
			setSeedInfo();
		
			$seed.on("change", function(){
				setSeedInfo();
				update(info);
			});
			
		});
		
	})();
	//.trigger("change");
	
	
	$("div.regenerate input").on("click", function(){update(info);});
	
	
	var changeDisabled = (function(){
		
		var $mrButton = $("div.regenerate input");
		var $randuSlider = $("div.seed.randu input");
		var $whSliders =  $("div.seed.wh input");
		
		return function(generator){
			
			if(generator === "mr"){
				$mrButton.prop("disabled", false);
			} else{
				$mrButton.prop("disabled", true);
			}
			
			if(generator === "randu"){
				$randuSlider.prop("disabled", false);
			} else{
				$randuSlider.prop("disabled", true);
			}
			
			if(generator === "wh"){
				$whSliders.prop("disabled", false);
			} else{
				$whSliders.prop("disabled", true);
			}
				
		};
		
	})();	
	
	
	$("#generator").on("change", function(){
		var generator = $(this).val();
		changeDisabled(generator);
		info.generator = generator;
		update(info);
	})
	.trigger("change"); //ultimately draws the scene
	

})();
!
999px

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