javascript THREE.js 中的反光材料
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Reflective material in THREE.js
提问by MCSharp
How can I create a material that reflects other shapes from the scene? I have tried the reflectivityproperty but it didn't reflect anything.
如何创建反映场景中其他形状的材质？我已经尝试过该reflectivity属性，但它没有反映任何内容。
There is an example that seems to have this effect: http://threejs.org/examples/#webgl_shading_physical
有一个例子似乎有这种效果：http: //threejs.org/examples/#webgl_shading_physical
It doesn't look like standard materials were used to create this.
它看起来不像是使用标准材料来创建的。
采纳答案by Lee Stemkoski
To go into a bit of the theory: a reflection is basically an image of the scene taken from a certain position. So if you want a planar mesh to serve as a mirror, you'll have to add a camera at that position, have it render the scene to a texture in the animation loop, and then use that texture in the material for the planar mesh. I would also recommend looking at http://stemkoski.github.io/Three.js/Reflection.htmlin addition to the examples WestLangley mentioned.
深入一点理论：反射基本上是从某个位置拍摄的场景图像。因此，如果您希望平面网格用作镜子，则必须在该位置添加一个相机，让它在动画循环中将场景渲染为纹理，然后在平面网格的材质中使用该纹理. 除了 WestLangley 提到的示例之外，我还建议您查看http://stemkoski.github.io/Three.js/Reflection.html。
Also, play around with settings; for a less reflective effect, for example, try:
此外，玩弄设置；例如，为了减少反射效果，请尝试：
var mirrorMaterial = new THREE.MeshBasicMaterial( { color: 0x111111, envMap: mirrorCamera.renderTarget } );
or
或者
var mirrorMaterial = new THREE.MeshPhongMaterial( { emissive: 0x111111, envMap: mirrorCamera.renderTarget } );
回答by Hoxz
https://threejs.org/examples/#webgl_materials_cubemap
I did it with the above example:
https://threejs.org/examples/#webgl_materials_cubemap
我用上面的例子做到了：
new THREE.MeshLambertMaterial ({
map: texture,
envMap: scene.background,
combine: THREE.MixOperation,
reflectivity: .5
})
The key variable, as i understand, is THREE.MixOperation
据我了解，关键变量是 THREE.MixOperation
