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常用计算几何算法
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gistfile1.txt
整理一下工作学习中用到的计算几何算法，大多使用JavaScript实现。
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kikitte commented Apr 4, 2022

Mapping Irregular Quadrilateral to a Rectangle

image
image

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kikitte commented Apr 10, 2022

求平面方程和直线交点
IMG_20220410_081059

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kikitte commented Apr 10, 2022 •
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原坐标系下 三个两两垂直的向量构成新坐标系，求从原坐标系到新坐标系的空间变换矩阵
IMG_20220526_224759

平面直角坐标系下情形：
IMG_20220819_224052

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kikitte commented Apr 28, 2022 •
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坡面法向量在XOZ平面和YOZ平面上的投影线的坡度大小，可能实际用处比较小。
IMG_20220501_151307

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kikitte commented Sep 13, 2022

1663055740107

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kikitte commented Oct 29, 2022

空间直角坐标系中点的平移、旋转、缩放后坐标计算

1667037122635

1667037122632
1667037122629
1667037122627

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kikitte commented Nov 17, 2022

求经纬坐标系上某点沿经线、纬线方向前进单位距离所导致的经纬度变化量：
1668692398189

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kikitte commented Jul 27, 2023

平面直角坐标系上点向左向右旋转90度以及以y=x的对称点：
1690468443172

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