请写一段webgl完整网页代码,实现一个三角形abc,以边ca为轴旋转
时间: 2024-05-03 15:16:56 浏览: 138
以下是一个基本的网页代码,使用WebGL实现一个旋转的三角形abc:
```
<!DOCTYPE html>
<html>
<head>
<title>WebGL Triangle Rotation</title>
<meta charset="utf-8">
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
<style>
body { margin: 0; }
canvas { width: 100%; height: 100%; }
</style>
</head>
<body>
<script>
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 );
camera.position.z = 5;
var renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
var geometry = new THREE.Geometry();
geometry.vertices.push(
new THREE.Vector3( -1, 0, 0 ),
new THREE.Vector3( 0, 1, 0 ),
new THREE.Vector3( 1, 0, 0 )
);
geometry.faces.push( new THREE.Face3( 0, 1, 2 ) );
geometry.computeVertexNormals();
var material = new THREE.MeshBasicMaterial( { color: 0xffffff } );
var triangle = new THREE.Mesh( geometry, material );
scene.add( triangle );
function animate() {
requestAnimationFrame( animate );
triangle.rotation.z += 0.01;
renderer.render( scene, camera );
}
animate();
</script>
</body>
</html>
```
这段代码使用了Three.js库来简化WebGL代码,创建了一个场景、相机、渲染器、三角形几何体和材质,并将三角形添加到场景中。然后,使用`requestAnimationFrame`函数来实现动画效果,不断旋转三角形并渲染场景。
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