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>

	<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: 1, depth:30 }, scene);
			plane.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;

				// Default to std
				var currentMaterial = std;
				sphere.material = std;

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

				gui.add(options, 'shader', ['standard', 'simple']).onFinishChange(function () {
					switch (options.shader) {
						case "simple":
							currentMaterial = simple;
							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;
				});

				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;
				});
			});
		}

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