javascript
/
three.js
зеркало из https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - sprites nodes</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				color: #fff;
				font-family:Monospace;
				font-size:13px;
				margin: 0px;
				text-align:center;
				overflow: hidden;
			}

			#info {
				color: #fff;
				position: absolute;
				top: 10px;
				width: 100%;
				text-align: center;
				display:block;
			}

			a { color: white }
		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - Node-Based Sprites
		</div>

		<script src="../build/three.js"></script>

		<script src='js/geometries/TeapotBufferGeometry.js'></script>
		<script src="js/controls/OrbitControls.js"></script>
		<script src="js/libs/dat.gui.min.js"></script>

		<script type="module">

		import './js/nodes/THREE.Nodes.js';
		import './js/loaders/NodeMaterialLoader.js';

		var container = document.getElementById( 'container' );

		var renderer, scene, camera, clock = new THREE.Clock(), fov = 50;
		var frame = new THREE.NodeFrame();
		var plane, sprite1, sprite2, sprite3;
		var walkingManTexture, walkingManTextureURL;
		var library = {};
		var controls;

		window.addEventListener( 'load', init );

		function init() {

			//
			// Renderer / Controls
			//

			renderer = new THREE.WebGLRenderer( { antialias: true } );
			renderer.setPixelRatio( window.devicePixelRatio );
			renderer.setSize( window.innerWidth, window.innerHeight );
			container.appendChild( renderer.domElement );

			scene = new THREE.Scene();
			scene.fog = new THREE.Fog( 0x0000FF, 70, 150 );

			camera = new THREE.PerspectiveCamera( fov, window.innerWidth / window.innerHeight, 1, 1000 );
			camera.position.z = 100;
			camera.target = new THREE.Vector3();

			controls = new THREE.OrbitControls( camera, renderer.domElement );
			controls.minDistance = 50;
			controls.maxDistance = 200;

			//
			// SpriteNode
			//

			// use scale to adjuste the real sprite size
			plane = new THREE.PlaneBufferGeometry( 1, 1 );

			// https://openclipart.org/detail/239883/walking-man-sprite-sheet
			walkingManTextureURL = "textures/WalkingManSpriteSheet.png";

			walkingManTexture = new THREE.TextureLoader().load( walkingManTextureURL );
			walkingManTexture.wrapS = walkingManTexture.wrapT = THREE.RepeatWrapping;

			library[ walkingManTextureURL ] = walkingManTexture;

			// horizontal sprite-sheet animator

			function createHorizontalSpriteSheetNode( hCount, speed ) {

				var speed = new THREE.Vector2Node( speed, 0 ); // frame per second
				var scale = new THREE.Vector2Node( 1 / hCount, 1 ); // 8 horizontal images in sprite-sheet

				var uvTimer = new THREE.OperatorNode(
					new THREE.TimerNode(),
					speed,
					THREE.OperatorNode.MUL
				);

				var uvIntegerTimer = new THREE.Math1Node(
					uvTimer,
					THREE.Math1Node.FLOOR
				);

				var uvFrameOffset = new THREE.OperatorNode(
					uvIntegerTimer,
					scale,
					THREE.OperatorNode.MUL
				);

				var uvScale = new THREE.OperatorNode(
					new THREE.UVNode(),
					scale,
					THREE.OperatorNode.MUL
				);

				var uvFrame = new THREE.OperatorNode(
					uvScale,
					uvFrameOffset,
					THREE.OperatorNode.ADD
				);

				return uvFrame;

			}

			// sprites

			var spriteWidth = 20,
				spriteHeight = 20;

			scene.add( sprite1 = new THREE.Mesh( plane, new THREE.SpriteNodeMaterial() ) );
			sprite1.scale.x = spriteWidth;
			sprite1.scale.y = spriteHeight;
			sprite1.material.color = new THREE.TextureNode( walkingManTexture );
			sprite1.material.color.coord = createHorizontalSpriteSheetNode( 8, 10 );

			scene.add( sprite2 = new THREE.Mesh( plane, new THREE.SpriteNodeMaterial() ) );
			sprite2.position.x = 30;
			sprite2.scale.x = spriteWidth;
			sprite2.scale.y = spriteHeight;
			sprite2.material.color = new THREE.TextureNode( walkingManTexture );
			sprite2.material.color.coord = createHorizontalSpriteSheetNode( 8, 30 );
			sprite2.material.color = new THREE.Math1Node( sprite2.material.color, THREE.Math1Node.INVERT );
			sprite2.material.spherical = false; // look at camera horizontally only, very used to vegetation
			// horizontal zigzag sprite
			sprite2.material.transform = new THREE.OperatorNode(
				new THREE.OperatorNode(
					new THREE.Math1Node( new THREE.TimerNode( 3 ), THREE.Math1Node.SIN ), // 3 is speed (time scale)
					new THREE.Vector2Node( .3, 0 ), // horizontal scale (position)
					THREE.OperatorNode.MUL
				),
				new THREE.PositionNode(),
				THREE.OperatorNode.ADD
			);

			var sineWaveFunction = new THREE.FunctionNode( [
				// https://stackoverflow.com/questions/36174431/how-to-make-a-wave-warp-effect-in-shader
				"vec2 sineWave(vec2 uv, vec2 phase) {",
				// wave distortion
				"	float x = sin( 25.0*uv.y + 30.0*uv.x + 6.28*phase.x) * 0.01;",
				"	float y = sin( 25.0*uv.y + 30.0*uv.x + 6.28*phase.y) * 0.03;",
				"	return vec2(uv.x+x, uv.y+y);",
				"}"
			].join( "\n" ) );

			scene.add( sprite3 = new THREE.Mesh( plane, new THREE.SpriteNodeMaterial() ) );
			sprite3.position.x = - 30;
			sprite3.scale.x = spriteWidth;
			sprite3.scale.y = spriteHeight;
			sprite3.material.color = new THREE.TextureNode( walkingManTexture );
			sprite3.material.color.coord = new THREE.FunctionCallNode( sineWaveFunction, {
				"uv": createHorizontalSpriteSheetNode( 8, 0 ),
				"phase": new THREE.TimerNode()
			} );
			sprite3.material.fog = true;

			//
			//	Test serialization
			//

			//spriteToJSON( sprite1 );
			//spriteToJSON( sprite2 );
			//spriteToJSON( sprite3 );

			//
			// Events
			//

			window.addEventListener( 'resize', onWindowResize, false );

			onWindowResize();
			animate();

		}

		function spriteToJSON( sprite ) {

			// serialize

			var json = sprite.material.toJSON();

			// replace uuid to url (facilitates the load of textures using url otherside uuid)

			THREE.NodeMaterialLoaderUtils.replaceUUID( json, walkingManTexture, walkingManTextureURL );

			// deserialize

			var material = new THREE.NodeMaterialLoader( null, library ).parse( json );

			// replace material

			sprite.material.dispose();

			sprite.material = material;

		}

		function onWindowResize() {

			var width = window.innerWidth, height = window.innerHeight;

			camera.aspect = width / height;
			camera.updateProjectionMatrix();

			renderer.setSize( width, height );

		}

		function animate() {

			var delta = clock.getDelta();

			// update material animation and/or gpu calcs (pre-renderer)
			frame.update( delta )
				.updateNode( sprite1.material )
				.updateNode( sprite2.material )
				.updateNode( sprite3.material );

			// rotate sprite
			sprite3.rotation.z -= Math.PI * .005;

			renderer.render( scene, camera );

			requestAnimationFrame( animate );

		}

		</script>

	</body>
</html>