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◆ quadSplinesHit()
| float mgnear::quadSplinesHit |
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int |
n, |
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const Point2d * |
knots, |
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bool |
closed, |
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const Point2d & |
pt, |
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float |
tol, |
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Point2d & |
nearpt, |
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int & |
segment |
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static |
计算点到二次样条曲线的最近距离
- 参数
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| [in] | n | 二次样条曲线的控制点的点数 |
| [in] | knots | 控制点坐标数组，元素个数为n |
| [in] | closed | 是否为闭合曲线 |
| [in] | pt | 曲线段外给定的点 |
| [in] | tol | 距离公差，正数，超出则不计算最近点 |
| [out] | nearpt | 曲线上的最近点 |
| [out] | segment | 最近点所在曲线段的序号，[0,n-2]，闭合时为[0,n-1]，负数表示失败 |
- 返回
- 给定的点到最近点的距离，失败时为极大数
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