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@antv/g-plugin-canvas-picker

v2.1.12

Published

2 days ago

A G plugin for picking in canvas

Downloads

173,381

@antv/g-plugin-canvas-picker

基于 Canvas2D API 实现的拾取：

使用 R-Tree 空间索引查找拾取点命中的一系列图形包围盒
在这些图形中找到最顶层的一个图形，依据 z-index
使用数学计算精确判定是否命中该图形，例如 Circle 测算到圆心距离是否小于半径

该方案基于 CPU，因此优化点在于包围盒相交运算是否足够快。