javascript
/
three.js
дзеркало https://github.com/tazdij/three.js.git


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225
							<!doctype html>
<html lang="en">
	<head>
		<title>three.js webgl - materials - wireframe</title>
		<meta charset="utf-8">
		<style>
			body {
				margin: 0px;
				background-color: #000000;
				overflow: hidden;
			}
		</style>
	</head>
	<body>

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

		<script type="x-shader/x-vertex" id="vertexShader">

			attribute vec3 center;
			varying vec3 vCenter;

			void main() {

				vCenter = center;
				gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );

			}

		</script>

		<script type="x-shader/x-fragment" id="fragmentShaderQuad">

			#extension GL_OES_standard_derivatives : enable

			varying vec3 vCenter;

			float edgeFactor1() {

				vec2 d = fwidth( vCenter.xy );
				vec2 a2 = smoothstep( vec2( 0.0 ), d * 1.5, vCenter.xy );
				return min( a2.x, a2.y );

			}

			float edgeFactor2() {

				vec2 d = fwidth( 1.0 - vCenter.xy );
				vec2 a2 = smoothstep( vec2( 0.0 ), d * 1.5, 1.0 - vCenter.xy );

				return min( a2.x, a2.y );
			}


			void main() {

				gl_FragColor.rgb = mix( vec3( 1.0 ), vec3( 0.2 ), min( edgeFactor1(), edgeFactor2() ) );
				gl_FragColor.a = 1.0;

			}

		</script>

		<script type="x-shader/x-fragment" id="fragmentShaderTri">

			#extension GL_OES_standard_derivatives : enable

			varying vec3 vCenter;

			float edgeFactor() {

				vec3 d = fwidth( vCenter );
				vec3 a3 = smoothstep( vec3( 0.0 ), d * 1.5, vCenter );
				return min( min( a3.x, a3.y ), a3.z );

			}

			void main() {

				gl_FragColor.rgb = mix( vec3( 1.0 ), vec3( 0.2 ), edgeFactor() );
				gl_FragColor.a = 1.0;

			}

		</script>

		<script>

			var camera, scene, renderer;
			var meshTris, meshQuads, meshLines;

			init();
			animate();

			function init() {

				scene = new THREE.Scene();

				// camera

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 2000 );
				camera.position.z = 800;
				scene.add( camera );

				//

				var size = 150;

				var geometryLines = new THREE.CubeGeometry( size, size, size );
				var geometryQuads = new THREE.CubeGeometry( size, size, size );
				var geometryTris = new THREE.CubeGeometry( size, size, size );

				THREE.GeometryUtils.triangulateQuads( geometryTris );

				// wireframe using gl.LINES

				var materialLines = new THREE.MeshBasicMaterial( { wireframe: true } );

				meshLines = new THREE.Mesh( geometryLines, materialLines );
				meshLines.position.x = 300;
				scene.add( meshLines );

				//

				var vertexShader = document.getElementById( 'vertexShader' ).textContent;

				var fragmentShaderQuad = document.getElementById( 'fragmentShaderQuad' ).textContent;
				var fragmentShaderTri = document.getElementById( 'fragmentShaderTri' ).textContent;

				// wireframe using gl.TRIANGLES (interpreted as quads)

				var attributesQuads = { center: { type: 'v3', boundTo: 'faceVertices', value: [] } };
				var valuesQuads = attributesQuads.center.value;

				for( var f = 0; f < geometryQuads.faces.length; f ++ ) {

					var face = geometryQuads.faces[ f ];

					if ( face instanceof THREE.Face3 ) {

						valuesQuads[ f ] = [ new THREE.Vector3( 1, 0, 0 ), new THREE.Vector3( 0, 1, 0 ), new THREE.Vector3( 0, 0, 1 ) ];

					} else {

						valuesQuads[ f ] = [ new THREE.Vector3( 1, 0, 0 ), new THREE.Vector3( 1, 1, 0 ), new THREE.Vector3( 0, 1, 0 ), new THREE.Vector3( 0, 0, 0 ) ];

					}

				}

				var materialQuads = new THREE.ShaderMaterial( { uniforms: {}, attributes: attributesQuads, vertexShader: vertexShader, fragmentShader: fragmentShaderQuad } );

				meshQuads = new THREE.Mesh( geometryQuads, materialQuads );
				meshQuads.position.x = 0;
				scene.add( meshQuads );

				// wireframe using gl.TRIANGLES (interpreted as triangles)

				var attributesTris = { center: { type: 'v3', boundTo: 'faceVertices', value: [] } };
				var valuesTris = attributesTris.center.value;

				for( var f = 0; f < geometryTris.faces.length; f ++ ) {

					var face = geometryTris.faces[ f ];

					if ( face instanceof THREE.Face3 ) {

						valuesTris[ f ] = [ new THREE.Vector3( 1, 0, 0 ), new THREE.Vector3( 0, 1, 0 ), new THREE.Vector3( 0, 0, 1 ) ];

					} else {

						valuesQuads[ f ] = [ new THREE.Vector3( 1, 0, 0 ), new THREE.Vector3( 1, 1, 0 ), new THREE.Vector3( 0, 1, 0 ), new THREE.Vector3( 0, 0, 0 ) ];

					}

				}

				var materialTris = new THREE.ShaderMaterial( { uniforms: {}, attributes: attributesTris, vertexShader: vertexShader, fragmentShader: fragmentShaderTri } );

				meshTris = new THREE.Mesh( geometryTris, materialTris );
				meshTris.position.x = -300;
				scene.add( meshTris );

				// renderer

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

				// events

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

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

			}

			function animate() {

				requestAnimationFrame( animate );

				meshLines.rotation.x += 0.005;
				meshLines.rotation.y += 0.01;

				meshQuads.rotation.x += 0.005;
				meshQuads.rotation.y += 0.01;

				meshTris.rotation.x += 0.005;
				meshTris.rotation.y += 0.01;

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>