Download three.js from [http://www.html5canvastutorials.com/libraries/Three.js] library and put in the below HTML code.
You will get good output.
<!Doctype html>
<html lang="eng">
<head>
<title>I like shapes</title>
<meta charset="UTF-8">
<style>
canvas{
width: 100%;
height: 100%
}
body{
background: url(mathematics.jpg);
width: 800px;
height: 500px;
}
</style>
</head>
<body>
<script src="three.js"></script>
<script>
// creating a Scene
var scene = new THREE.Scene();
// Adding Perspective Camera
// NOTE: There are 3 cameras: Orthographic, Perspective and Combined.
var camera = new THREE.PerspectiveCamera(75, window.innerWidth/window.innerHeight, 0.1, 1000);
//create WebGL renderer
var renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
//Drawing a Tetrahedron.
var pyramidgeometry = new THREE.CylinderGeometry(0, 0.8, 4, 4, false);
//Change colour of Pyramid using Wireframe
var pyramidmaterial = new THREE.MeshBasicMaterial({wireframe: true, color: 0x0ff000});
var pyramid = new THREE.Mesh(pyramidgeometry, pyramidmaterial); //This creates the cone
pyramid.position.set(3.1,0,0);
scene.add(pyramid);
//moving camera outward of centre to Z-axis, because Cube is being created at the centre
camera.position.z = 5;
//we have a scene, a camera, a cube and a renderer.
/*A render loop essentially makes the renderer draw the scene 60 times per second.
I have used requestAnimationFrame() function.*/
var render = function() {
requestAnimationFrame(render);
/*cube.rotation.x += 0.01;
cube.rotation.y += 0.01;
cube.rotation.z += 0.01;*/
pyramid.rotation.y += 0.01;
pyramid.rotation.x += 0.01;
pyramid.rotation.z += 0.01;
renderer.render(scene, camera);
};
// calling the function
render();
</script>
</body>
</html>
謝謝你的解釋。這就是我一直在尋找的! –