THREE.js JSONLoader回调 [英] THREE.js JSONLoader callback

问题描述

在THREE.js中，如果我有多次调用JSONLoader来加载多个对象（简单示例）：

  function init（）{
 var loader = new THREE.JSONLoader（）; 
 loader.load（mesh1.js，createScene）; 
 loader.load（mesh2.js，createScene）; 
 
 $ b函数createScene（geometry）{
 if（geometry.filename ==mesh1.js）{
 mesh1 = new THREE.Mesh（geometry，材料）; 
 scene.add（mesh1）; 
} else if（geometry.filename ==mesh2.js）{
 mesh2 = new THREE.Mesh（geometry，material）; 
 scene.add（mesh2）; 
 
 
 $ / code> 

如何确定回调函数返回的网格，特别是当他们经常出现乱序？

我试图用一个通用的回调函数来处理多个返回的网格物体。在返回的几何体中是否有一些属性指示我可以测试的原始文件名？

或者有更优雅的方法吗？也许为每个调用创建一个新的THREE.JSONLoader对象可以帮助回调函数确定哪个网格已经到达？

感谢任何帮助/想法！谢谢！

解决方案

那么WestLangley提出了一个更通用的方法。

  loader.load（mesh1.js，meshloader（mesh1.js））; 
 loader.load（mesh2.js，meshloader（mesh2.js））; 
  

然后

  function meshloader（fileName）{
 return function（geometry）{
 ... 
} 
} 
  

这样，您可以在每个加载的文件上添加一个标识符。

In THREE.js, if I have multiple calls to the JSONLoader to load multiple objects like this (simplified example):

function init() {    
  var loader = new THREE.JSONLoader();    
  loader.load("mesh1.js", createScene);    
  loader.load("mesh2.js", createScene);
}    

function createScene( geometry ) {    
  if (geometry.filename == "mesh1.js") {    
    mesh1 = new THREE.Mesh( geometry, material );
    scene.add( mesh1 );    
  } else if (geometry.filename == "mesh2.js") {    
    mesh2 = new THREE.Mesh( geometry, material );
    scene.add( mesh2 );
  }
}

How can I determine which mesh has been returned on callback, especially when they frequently arrive out of order?

I'm trying to handle multiple returned meshes with a single generic callback function. Is there some property in the returned geometry that indicates the original filename that I can test against?

Or perhaps there's a more elegant way? Perhaps creating a new THREE.JSONLoader object for each call would help the callback function determine which mesh has arrived?

I appreciate any help/ideas! Thanks!

解决方案

well there is a more generic way then what WestLangley proposes.

loader.load( "mesh1.js", meshloader("mesh1.js")); 
loader.load( "mesh2.js", meshloader("mesh2.js"));

then

function meshloader(fileName){
    return function(geometry){
        ...
    }
}

This way, you can add a identifier on each loaded file.

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