如装有大面积玻璃因而易受阳光照射的多层办公大楼，还包括会产生热量的办公机器，计算机，密集的电力照明等；
Such as in multi-storey office blocks with large glass areas subject to solar gains, and including heat-producing office machinery, computers, intensive electric lighting, etc.
对该照明CAD系统的光线追迹与光照度计算方法进行了理论探讨，其中在光照度计算方法中引入了线性同余组合发生器，大大提高了模拟的真实性。
The ray trace and the illuminance calculation method of the CAD system is analyzed. And the linear congruence generator is introduced in the calculation, which improves the emulation reliability.
由于其计算复杂度远远超过了局部光照计算，传统上全局光照明模拟难以同时获得实时的绘制效率和逼真的效果。
As its calculation complexity is far more than that of local illumination, there has been yet few satisfying solution which achieves high quality and performance simultaneously.
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