利用threejs构造一个农业大棚
时间: 2023-08-29 17:05:44 浏览: 111
基于THREE.JS的3d农业大棚.zip
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首先,需要在HTML文件中引入threejs库和一个用于渲染场景的canvas元素:
```
<!DOCTYPE html>
<html>
<head>
<title>农业大棚</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
</head>
<body>
<canvas id="canvas"></canvas>
</body>
</html>
```
然后,可以使用以下代码创建一个场景和渲染器:
```
var scene = new THREE.Scene();
var renderer = new THREE.WebGLRenderer({canvas: document.getElementById('canvas')});
renderer.setSize(window.innerWidth, window.innerHeight);
```
接下来,需要创建一个地面和一个大棚。
创建地面可以使用一个平面几何体和一个 Lambert 材质:
```
var groundGeometry = new THREE.PlaneGeometry(100, 100);
var groundMaterial = new THREE.MeshLambertMaterial({color: 0x808080});
var ground = new THREE.Mesh(groundGeometry, groundMaterial);
ground.rotation.x = -Math.PI/2;
scene.add(ground);
```
创建大棚可以使用一个长方体几何体和一个透明的 Phong 材质:
```
var greenhouseGeometry = new THREE.BoxGeometry(10, 5, 10);
var greenhouseMaterial = new THREE.MeshPhongMaterial({color: 0x00ff00, opacity: 0.5, transparent: true});
var greenhouse = new THREE.Mesh(greenhouseGeometry, greenhouseMaterial);
greenhouse.position.y = 2.5;
scene.add(greenhouse);
```
最后,需要创建一个光源和一个摄像机,并将它们添加到场景中:
```
var light = new THREE.PointLight(0xffffff, 1, 100);
light.position.set(0, 10, 0);
scene.add(light);
var camera = new THREE.PerspectiveCamera(75, window.innerWidth/window.innerHeight, 0.1, 1000);
camera.position.z = 15;
scene.add(camera);
```
现在,可以使用以下代码来渲染场景:
```
function animate() {
requestAnimationFrame(animate);
greenhouse.rotation.y += 0.01;
renderer.render(scene, camera);
}
animate();
```
这样,一个简单的农业大棚就被创建了。完整的代码如下:
```
<!DOCTYPE html>
<html>
<head>
<title>农业大棚</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
</head>
<body>
<canvas id="canvas"></canvas>
<script>
var scene = new THREE.Scene();
var renderer = new THREE.WebGLRenderer({canvas: document.getElementById('canvas')});
renderer.setSize(window.innerWidth, window.innerHeight);
var groundGeometry = new THREE.PlaneGeometry(100, 100);
var groundMaterial = new THREE.MeshLambertMaterial({color: 0x808080});
var ground = new THREE.Mesh(groundGeometry, groundMaterial);
ground.rotation.x = -Math.PI/2;
scene.add(ground);
var greenhouseGeometry = new THREE.BoxGeometry(10, 5, 10);
var greenhouseMaterial = new THREE.MeshPhongMaterial({color: 0x00ff00, opacity: 0.5, transparent: true});
var greenhouse = new THREE.Mesh(greenhouseGeometry, greenhouseMaterial);
greenhouse.position.y = 2.5;
scene.add(greenhouse);
var light = new THREE.PointLight(0xffffff, 1, 100);
light.position.set(0, 10, 0);
scene.add(light);
var camera = new THREE.PerspectiveCamera(75, window.innerWidth/window.innerHeight, 0.1, 1000);
camera.position.z = 15;
scene.add(camera);
function animate() {
requestAnimationFrame(animate);
greenhouse.rotation.y += 0.01;
renderer.render(scene, camera);
}
animate();
</script>
</body>
</html>
```
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