#ThreeJS#之外景天空盒子

最新推荐文章于 2025-03-07 09:16:45 发布

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最新推荐文章于 2025-03-07 09:16:45 发布

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文章标签： JS ThreeJS skybox

本文链接：https://blog.youkuaiyun.com/hbzhlt/article/details/66973486

版权

本文介绍了一种基于Three.js的外景天空盒子实现方法，包括创建、显示、隐藏及切换材质等功能。通过设置不同的场景风格，如自然景观和城市景观，来丰富场景表现。

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效果图：

外景天空盒子的使用例：

var outdoorSceneBox = new OutdoorSceneBox();
scene.add(editor.outdoorSceneBox.createOutdoorSceneBox(outdoorSceneConfigInfo));

外景天空盒子的配置例(上述代码中的outdoorConfigInfo)：

 
   "outdoor_scene":{ 
  
   "rootPath": 
   "resources/img/editor/outdoor_scene", 
  
   "sceneStyleList":[ 
  
                { 
   "subPath": 
   "natural", 
   "title": 
   "自然景观", 
   "sceneCount": 
   2}, 
  
                { 
   "subPath": 
   "city", 
   "title": 
   "城市景观", 
   "sceneCount": 
   2} 
  
         ] 
  
    }

外景天空盒子的实现代码：

/**
 * 外景盒子 
 */
var OutdoorSceneBox = function() {
    var directions = ["right", "left", "top", "bottom", "back", "front"];
    var imageSuffix = ".jpg";
    var outdoorSceneBox;

    /**
     * 创建外景盒子
     */
    this.createOutdoorSceneBox = function(outdoorSceneInfo){
        var sceneGeometry = new THREE.BoxGeometry(2000, 800, 2000);
        var sceneMaterial = loadDefaultMaterial(outdoorSceneInfo.rootPath);
        outdoorSceneBox = new THREE.Mesh(sceneGeometry, sceneMaterial);
        outdoorSceneBox.name = "outdoorSceneBox";
        outdoorSceneBox.position.y += 100;
        return outdoorSceneBox;
    }

    /**
     * 显示外景
     */
    this.show = function(){
        if(outdoorSceneBox) outdoorSceneBox.visible = true;
    }

    /**
     * 隐藏外景
     */
    this.hide = function(){
        if(outdoorSceneBox) outdoorSceneBox.visible = false;
    }

    /**
     * 切换外景材质
     */
    this.switchOutdoorScene = function(outdoorScenePath, callback){
        for (var i = 0; i < 6; i++) {
			outdoorSceneBox.material.materials[i].dispose();
		}
        outdoorSceneBox.material.materials.splice(0, 6);
        outdoorSceneBox.material.materials = loadMaterial(outdoorScenePath, callback);
    }

    /**
     * 加载指定路径下的材质图片
     * @param {String} outdoorScenePath 
     */
    function loadMaterial(outdoorScenePath, callback){
        var materialArray = [];
        for (var i = 0; i < 6; i++){
            materialArray.push(new THREE.MeshBasicMaterial({
                map: THREE.ImageUtils.loadTexture(outdoorScenePath + directions[i] + imageSuffix, undefined, callback),
                side: THREE.BackSide
            }));
        }

        return materialArray;
    }

    /**
     * 加载默认材质图片
     * @param {String} outdoorScenePath
     */
    function loadDefaultMaterial(outdoorScenePath){
        var materialArray = [];
        for (var i = 0; i < 6; i++){
            materialArray.push(new THREE.MeshBasicMaterial({
                map: THREE.ImageUtils.loadTexture(outdoorScenePath + "/default.jpg"),
                side: THREE.BackSide
            }));
        }

        return new THREE.MeshFaceMaterial(materialArray);
    }
    return this;
}
     
     
      
      var outdoorSceneBox = new OutdoorSceneBox();
scene.add(editor.outdoorSceneBox.createOutdoorSceneBox(outdoorSceneConfigInfo));
     
     
     
     
      
      /**
 * 外景盒子 
 */
var OutdoorSceneBox = function() {
    var directions = ["right", "left", "top", "bottom", "back", "front"];
    var imageSuffix = ".jpg";
    var outdoorSceneBox;

    /**
     * 创建外景盒子
     */
    this.createOutdoorSceneBox = function(outdoorSceneInfo){
        var sceneGeometry = new THREE.BoxGeometry(2000, 800, 2000);
        var sceneMaterial = loadDefaultMaterial(outdoorSceneInfo.rootPath);
        outdoorSceneBox = new THREE.Mesh(sceneGeometry, sceneMaterial);
        outdoorSceneBox.name = "outdoorSceneBox";
        outdoorSceneBox.position.y += 100;
        return outdoorSceneBox;
    }

    /**
     * 显示外景
     */
    this.show = function(){
        if(outdoorSceneBox) outdoorSceneBox.visible = true;
    }

    /**
     * 隐藏外景
     */
    this.hide = function(){
        if(outdoorSceneBox) outdoorSceneBox.visible = false;
    }

    /**
     * 切换外景材质
     */
    this.switchOutdoorScene = function(outdoorScenePath, callback){
        for (var i = 0; i < 6; i++) {
			outdoorSceneBox.material.materials[i].dispose();
		}
        outdoorSceneBox.material.materials.splice(0, 6);
        outdoorSceneBox.material.materials = loadMaterial(outdoorScenePath, callback);
    }

    /**
     * 加载指定路径下的材质图片
     * @param {String} outdoorScenePath 
     */
    function loadMaterial(outdoorScenePath, callback){
        var materialArray = [];
        for (var i = 0; i < 6; i++){
            materialArray.push(new THREE.MeshBasicMaterial({
                map: THREE.ImageUtils.loadTexture(outdoorScenePath + directions[i] + imageSuffix, undefined, callback),
                side: THREE.BackSide
            }));
        }

        return materialArray;
    }

    /**
     * 加载默认材质图片
     * @param {String} outdoorScenePath
     */
    function loadDefaultMaterial(outdoorScenePath){
        var materialArray = [];
        for (var i = 0; i < 6; i++){
            materialArray.push(new THREE.MeshBasicMaterial({
                map: THREE.ImageUtils.loadTexture(outdoorScenePath + "/default.jpg"),
                side: THREE.BackSide
            }));
        }

        return new THREE.MeshFaceMaterial(materialArray);
    }
    return this;
}
         
         
          
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