16 lines
545 B
JavaScript
16 lines
545 B
JavaScript
|
"use strict";
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
exports.getOffScreenContext = void 0;
|
||
|
|
// 全局设置一个唯一离屏的 ctx，用于计算 isPointInPath
|
||
|
|
var offScreenCtx = null;
|
||
|
|
function getOffScreenContext() {
|
||
|
|
if (!offScreenCtx) {
|
||
|
|
var canvas = document.createElement('canvas');
|
||
|
|
canvas.width = 1;
|
||
|
|
canvas.height = 1;
|
||
|
|
offScreenCtx = canvas.getContext('2d');
|
||
|
|
}
|
||
|
|
return offScreenCtx;
|
||
|
|
}
|
||
|
|
exports.getOffScreenContext = getOffScreenContext;
|
||
|
|
//# sourceMappingURL=offscreen.js.map
|