刚学了一个炫酷3D三棱锥立体特效,快来看看
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刚学了一个炫酷3D三棱锥立体特效,快来看看
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目錄標題
- 演示
- 技術棧
- 源碼
- css部分
- js部分
- 點擊直接資料領取
演示
技術棧
3D特效的話最容易讓人想到的應該是three.js吧。我們今天來說說它。
Three.js是基于原生WebGL封裝運行的三維引擎,在所有WebGL引擎中,Three.js是國內文資料最多、使用最廣泛的三維引擎。
Threejs是一款WebGL三維引擎,它可以用來做什么許多許多地場景應用
一個小案例
源碼
css部分
body{overflow: hidden;margin:0; } canvas{position: absolute;top: 0;left: 0;width: 100%;height:100%; }js部分
var w = window.innerWidth, h = window.innerHeight; window.onresize = function(){var w = window.innerWidth, h = window.innerHeight;camera.aspect = w / h;camera.updateProjectionMatrix();renderer.setSize( w, h ); }cameraSpeed = .0003; lightSpeed = .001; tubularSegments = 1000; radialSegments = 3; tubeRadius = 2; lightColor = 0xffffff; lightIntensity = 1; lightDistance = 20;var renderer = new THREE.WebGLRenderer({canvas: document.querySelector("canvas"),antialias: true, }); renderer.setSize(w, h);var scene = new THREE.Scene(); var camera = new THREE.PerspectiveCamera(60, w / h, .001, 1000);var starsGeometry = new THREE.Geometry(); for(i=0; i<3000; i++){var star = new THREE.Vector3();star.x = THREE.Math.randFloatSpread(1500);star.y = THREE.Math.randFloatSpread(1500);star.z = THREE.Math.randFloatSpread(1500);starsGeometry.vertices.push(star); } var starsMaterial = new THREE.PointsMaterial({color: 0xffffff}); var starField = new THREE.Points(starsGeometry,starsMaterial); scene.add(starField);for (i=0; i<p.length; i++) {var x = p[i][0];var y = p[i][2];var z = p[i][1];p[i] = new THREE.Vector3(x,y,z); } var path = new THREE.CatmullRomCurve3(p); var geometry = new THREE.TubeGeometry(path,tubularSegments,tubeRadius,radialSegments,true);for(i=0; i<geometry.faces.length; i++){geometry.faces[i].color = new THREE.Color("hsl("+i/2+",100%,50%)"); }var material = new THREE.MeshLambertMaterial({side: THREE.BackSide,vertexColors: THREE.FaceColors,wireframe: true });var tube = new THREE.Mesh(geometry, material); scene.add(tube);var light = new THREE.PointLight(0xffffff, 1, 50); scene.add(light); var light2 = new THREE.AmbientLight(0x222222); scene.add(light2);var l1 = new THREE.PointLight(lightColor, lightIntensity, lightDistance); scene.add(l1); var l2 = new THREE.PointLight(lightColor, lightIntensity, lightDistance); scene.add(l2); var l3 = new THREE.PointLight(lightColor, lightIntensity, lightDistance); scene.add(l3); var l4 = new THREE.PointLight(lightColor, lightIntensity, lightDistance); scene.add(l4); var l5 = new THREE.PointLight(lightColor, lightIntensity, lightDistance); scene.add(l5);var pct = 0; var pct2 = 0; function render(){pct += cameraSpeedpct2 += lightSpeed;var pt1 = path.getPointAt(pct%1);var pt2 = path.getPointAt((pct + .01)%1);camera.position.set(pt1.x,pt1.y,pt1.z);camera.lookAt(pt2);light.position.set(pt2.x, pt2.y, pt2.z);l1.position.set(path.getPointAt((pct2+.0)%1).x, path.getPointAt((pct2+.0)%1).y, path.getPointAt((pct2+.0)%1).z);l2.position.set(path.getPointAt((pct2+.2)%1).x, path.getPointAt((pct2+.2)%1).y, path.getPointAt((pct2+.2)%1).z);l3.position.set(path.getPointAt((pct2+.4)%1).x, path.getPointAt((pct2+.4)%1).y, path.getPointAt((pct2+.4)%1).z);l4.position.set(path.getPointAt((pct2+.6)%1).x, path.getPointAt((pct2+.6)%1).y, path.getPointAt((pct2+.6)%1).z);l5.position.set(path.getPointAt((pct2+.8)%1).x, path.getPointAt((pct2+.8)%1).y, path.getPointAt((pct2+.8)%1).z);renderer.render(scene, camera);requestAnimationFrame(render); } requestAnimationFrame(render); p = [[389,246,0],[410,255,20],[413,268,7],[431,261,12],[418,244,30],[416,217,25],[420,205,8],[427,227,-20],[432,236,5],[444,228,12],[451,232,41],[446,246,72],[443,264,96],[446,278,65],[463,267,20],[460,258,-10],[464,243,-20],[459,233,0],[475,225,22],[484,225,29],[490,214,51],[476,202,55],[462,202,55],[446,205,42],[440,192,42],[430,183,72],[413,184,58],[406,191,32],[406,207,0],[402,220,0],[390,222,20],[385,228,10],[389,246,0] ];點擊直接資料領取
如果你在學習python或者Java哪怕是C遇到問題都可以來給我留言,因為在學習初期新手總會走很多彎路,這個時候如果沒有有個人來幫一把的話很容易就放棄了。身邊很多這樣的例子許多人學著學著就轉了專業換了方向,不僅是自身問題還是沒有正確的學習。所以作為一個過來人我希望有問題給我留言,說不上是幫助就是順手敲幾行字的事情。
這里有python,Java學習資料還有有有趣好玩的編程項目,更有難尋的各種資源。反正看看也不虧。
總結
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