This will help the 3 D engine's performance by doing per - object frustum culling.

此举有助于3D引擎对对象的层次视锥剔除运算.

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The forming principle of frustum cone - like cup ( container ) is studied.

研究了圆台形纸杯 ( 容器 ) 的成型原理.

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Given the current frustum, compute the visible geometry.

给定当前视景体, 计算可见几何体.

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To understand this, we must first take a brief look at the characteristics of the frustum.

要理解这点, 我们首先必须简要了解一下试图锥截体的特征.

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