@antv/g-base
Version:
A common util collection for antv projects
12 lines • 386 B
JavaScript
// 全局设置一个唯一离屏的 ctx，用于计算 isPointInPath
var offScreenCtx = null;
export function getOffScreenContext() {
if (!offScreenCtx) {
var canvas = document.createElement('canvas');
canvas.width = 1;
canvas.height = 1;
offScreenCtx = canvas.getContext('2d');
}
return offScreenCtx;
}
//# sourceMappingURL=offscreen.js.map