three.js加载obj / mtl呈现黑色 [英] three.js load obj/mtl renders black

问题描述

我正在尝试将相当复杂的.obj文件加载到three.js中。代码如下：

I'm trying to load a fairly complex .obj file into three.js. Here's the code:

    // Load obj file
    var loader = new THREE.OBJMTLLoader();
    loader.load('MQ-9.obj', 'MQ-9.mtl', function(object) {
            scene.add(object);
    });

MQ-9.mtl文件引用在对象的各个位置使用的三个图像（这是MQ-9 Predator无人机）。我可以很好地加载对象，但是它全都是黑色的。图片似乎未加载。我在做什么错？

The MQ-9.mtl file refers to three images that are used on various places of the object (which is an MQ-9 Predator drone). I can load the object fine but its all black. The images don't appear to be loading. What am I doing wrong?

推荐答案

如果加载模型并呈现黑色，则可能有多种可能的原因，其中一些其中包括模型问题。确保没有控制台错误。

If you load a model and it renders black, there can be several possible causes, some of which include problems with your model. Make sure you have no console errors.

除此之外，最常见的两个原因是：

Other than that, the two most common causes are:

1. 场景中没有灯光

1. a lack of lights in the scene

在所有资产加载之前渲染场景

rendering the scene before all assets load

three.js r.67

three.js r.67

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