zhangyupeng
/
Babylon.js


			
				
					
						
						
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							<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
	<title>Shaders Library</title>
	<script src="dat.gui.min.js"></script>
	<script src="babylon.max.js"></script>
	<script src="../dist/babylon.simpleMaterial.js"></script>
	<script src="../dist/babylon.waterMaterial.js"></script>
	<script src="../dist/babylon.fireMaterial.js"></script>

	<style>
		html, body {
			width: 100%;
			height: 100%;
			padding: 0;
			margin: 0;
			overflow: hidden;
		}

		#renderCanvas {
			width: 100%;
			height: 100%;
		}

		#fps {
			position: absolute;
			background-color: black;
			border: 2px solid red;
			text-align: center;
			font-size: 16px;
			color: white;
			top: 15px;
			left: 10px;
			width: 60px;
			height: 20px;
		}
	</style>
</head>
<body>
	<div id="fps">0</div>
	<canvas id="renderCanvas"></canvas>

	<script>
		if (BABYLON.Engine.isSupported()) {
			var canvas = document.getElementById("renderCanvas");
			var engine = new BABYLON.Engine(canvas, true);
			var divFps = document.getElementById("fps");

			var scene = new BABYLON.Scene(engine);

			var camera = new BABYLON.ArcRotateCamera("Camera", Math.PI / 2, Math.PI / 6, 50, BABYLON.Vector3.Zero(), scene);
			camera.attachControl(canvas, true);

			// Lights
			var hemisphericLight = new BABYLON.HemisphericLight("hemi", new BABYLON.Vector3(0, 1, 0), scene);
			var pointLight = new BABYLON.PointLight("point", new BABYLON.Vector3(100, 100, 10), scene);
			pointLight.setEnabled(false);
			var directionalLight = new BABYLON.DirectionalLight("directional", new BABYLON.Vector3(1, 0.2, 0), scene);
			directionalLight.setEnabled(false);
			var spotLight = new BABYLON.SpotLight("spot", new BABYLON.Vector3(0, -30, 0), new BABYLON.Vector3(0, 1, 0), 1.1, 1, scene);
			spotLight.setEnabled(false);

			// Create meshes
			var sphere = BABYLON.Mesh.CreateSphere("sphere", 32, 30.0, scene);
			
			var plane = BABYLON.MeshBuilder.CreateBox("plane", { width: 30, height: 0.1, depth:30 }, scene);
			plane.setEnabled(false);
			
			// Skybox
			var skybox = BABYLON.Mesh.CreateBox("skyBox", 1000.0, scene);
			var skyboxMaterial = new BABYLON.StandardMaterial("skyBox", scene);
			skyboxMaterial.backFaceCulling = false;
			skyboxMaterial.reflectionTexture = new BABYLON.CubeTexture("textures/skybox/TropicalSunnyDay", scene);
			skyboxMaterial.reflectionTexture.coordinatesMode = BABYLON.Texture.SKYBOX_MODE;
			skyboxMaterial.diffuseColor = new BABYLON.Color3(0, 0, 0);
			skyboxMaterial.specularColor = new BABYLON.Color3(0, 0, 0);
			skyboxMaterial.disableLighting = true;
			skybox.material = skyboxMaterial;
			skybox.setEnabled(false);

			var currentMesh = sphere;

			// Rabbit
			var rabbit;
			BABYLON.SceneLoader.ImportMesh("Rabbit", "meshes/", "Rabbit.babylon", scene, function (newMeshes, particleSystems, skeletons) {
				rabbit = newMeshes[1];
				rabbit.setEnabled(false);
				rabbit.scaling = new BABYLON.Vector3(0.4, 0.4, 0.4);
				scene.beginAnimation(skeletons[0], 0, 100, true, 0.8);

				// Shadow caster
				var shadowCaster = BABYLON.Mesh.CreateTorus("torus", 4, 2, 30, scene, false);
				shadowCaster.setEnabled(false);
				shadowCaster.position = new BABYLON.Vector3(-20, -10, 0);

				var shadowGenerator = new BABYLON.ShadowGenerator(1024, directionalLight);
				shadowGenerator.getShadowMap().renderList.push(shadowCaster);
				shadowGenerator.usePoissonSampling = true;

				// Register a render loop to repeatedly render the scene
				var angle = 0;
				engine.runRenderLoop(function () {
					scene.render();
					divFps.innerHTML = engine.getFps().toFixed() + " fps";

					shadowCaster.position.x = 20 * Math.sin(angle);
					shadowCaster.position.y = 20 * Math.cos(angle);
					shadowCaster.position.z = 20 * Math.cos(angle);

					shadowCaster.rotation.x += 0.01;
					shadowCaster.rotation.y += 0.01;

					angle += 0.01;
				});

				// Resize
				window.addEventListener("resize", function () {
					engine.resize();
				});

				// Fog
				scene.fogMode = BABYLON.Scene.FOGMODE_NONE;
				scene.fogDensity = 0.01;

				// Create shaders
				var std = new BABYLON.StandardMaterial("std", scene);
				std.diffuseTexture = new BABYLON.Texture("textures/amiga.jpg", scene);
				std.diffuseTexture.uScale = 5;
				std.diffuseTexture.vScale = 5;

				var simple = new BABYLON.SimpleMaterial("simple", scene);
				simple.diffuseTexture = new BABYLON.Texture("textures/amiga.jpg", scene);
				simple.diffuseTexture.uScale = 5;
				simple.diffuseTexture.vScale = 5;
				
				var water = new BABYLON.WaterMaterial("water", scene, currentMesh);
				water.enableRenderTargets(false);
				water.bumpTexture = new BABYLON.Texture("textures/waterbump.png", scene);
				
				var fire = new BABYLON.FireMaterial("fire", scene);
				fire.diffuseTexture = new BABYLON.Texture("textures/fire/diffuse.png", scene);
				fire.distortionTexture = new BABYLON.Texture("textures/fire/distortion.png", scene);
				fire.opacityTexture = new BABYLON.Texture("textures/fire/opacity.png", scene);
				
				// Default to std
				var currentMaterial = std;
				sphere.material = std;

				//UI
				var gui = new dat.GUI();
				var options = {
					material: "standard",
					mesh: "sphere",
					hemisphericLight: true,
					pointLight: false,
					directionalLight: false,
					castShadows: false,
					spotLight: false,
					fog: false,
					skybox: false
				}

				gui.add(options, 'material', ['standard', 'simple', 'water', 'fire']).onFinishChange(function () {
					water.enableRenderTargets(false);
					
					switch (options.material) {
						case "simple":
							currentMaterial = simple;
							break;
						case "water":
							currentMaterial = water;
							water.enableRenderTargets(true);
							break;
						case "fire":
							currentMaterial = fire;
							break;
						default:
							currentMaterial = std;
							break;
					}

					currentMesh.material = currentMaterial;
				});

				gui.add(options, 'mesh', ['sphere', 'plane', 'rabbit']).onFinishChange(function () {
					currentMesh.setEnabled(false);
					switch (options.mesh) {
						case "sphere":
							currentMesh = sphere;
							break;
						case "plane":
							currentMesh = plane;
							break;
						case "rabbit":
							currentMesh = rabbit;
							break;
					}
					currentMesh.setEnabled(true);
					currentMesh.material = currentMaterial;
					
					water.mesh = currentMesh;
				});

				gui.add(options, 'hemisphericLight').onChange(function () {
					hemisphericLight.setEnabled(options.hemisphericLight);
				});

				gui.add(options, 'pointLight').onChange(function () {
					pointLight.setEnabled(options.pointLight);
				});

				gui.add(options, 'spotLight').onChange(function () {
					spotLight.setEnabled(options.spotLight);
				});

				var f1 = gui.addFolder('directionalLight');
				f1.add(options, 'directionalLight').onChange(function () {
					directionalLight.setEnabled(options.directionalLight);
					shadowCaster.setEnabled(options.directionalLight && options.castShadows);
				});

				f1.add(options, 'castShadows').onChange(function () {
					shadowCaster.setEnabled(options.directionalLight && options.castShadows);
					currentMesh.receiveShadows = true;
				});

				gui.add(options, 'fog').onChange(function () {
					scene.fogMode = options.fog ? BABYLON.Scene.FOGMODE_EXP : BABYLON.Scene.FOGMODE_NONE;
				});
				
				gui.add(options, 'skybox').onChange(function() {
					skybox.setEnabled(options.skybox);
				});
			});
		}

	</script>
</body>
</html>