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基于边界采样的曲面裂缝处理算法的几何原理

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Keywords: 细分曲面,曲面裂缝,平坦性,边界采样

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Abstract:

为了避免曲面在非均匀细分过程中产生裂缝,提出了一种基于边界采样的曲面裂缝处理方法。该方法结合曲面在参数空间上递归细分和沿曲面上曲线采样,在曲面初始化的基础上,对所有细分单元进行边界采样,构造自适应多边形来近似曲面上的曲线。再根据边界曲线的曲率,对每一个细分单元进行平坦性检测。通过构造内部边来细分每一个不能通过平坦性准则检测的单元,可有效避免近似曲面产生裂缝。

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