The lighting calculation of light guide is a complex problem, which is always based upon the geometric optics.

导光管照明计算是一个十分复杂的问题 ，国内外已有的导光管照明计算多建立在几何光学的基础上。

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Shaded - Draws solid surfaces including the lighting calculation. As with textured drawing, you won't see anything without lights.

阴影模式- 绘制包括光照计算在内的固体表面。当使用纹理绘制时，在没有光线的情况下，所有物体呈现黑色。

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I was the most timid lighting designer in the construction field at that time. People thought that all a lighting designer had to do was just to demonstrate a simple lighting calculation data.

那时候，我可以说是施工现场最微不足道的设计师了，因为大家都以为照明设计师要做的，就只是简单的照明数据测算。

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