jianghh-canvas
Version:
canvas画板，支持笔写、手写、鼠标流畅绘图，自动保存，撤销重做
16 lines (15 loc) • 641 B
JavaScript
const e = {
buffer: !0,
pointerdown({ offsetX: t, offsetY: i }) {
this.bufferCtx.moveTo(t, i);
},
pointermove({ offsetX: t, offsetY: i }) {
this.bufferCtx.clearRect(0, 0, this.el.width, this.el.height), this.bufferCtx.beginPath(), this.bufferCtx.arc(this.beginPoint.x, this.beginPoint.y, Math.abs(t - this.beginPoint.x), 0, 2 * Math.PI), this.endPoint = { x: t, y: i }, this.bufferCtx.stroke();
},
pointerup() {
this.endPoint && (this.ctx.beginPath(), this.ctx.arc(this.beginPoint.x, this.beginPoint.y, Math.abs(this.endPoint.x - this.beginPoint.x), 0, 2 * Math.PI), this.ctx.stroke());
}
};
export {
e as Arc
};