回答
这个脚本原理是基于贝塞尔曲线算法的仿真滑动,通过生成带随机弧度的滑动轨迹,模拟人类手指的真实滑动行为。以下是脚本的完整代码:
// 文档地址 https://docs.hamibot.com/
function getBezierPath(p1, p2, p3, p4, times) {
function Point2D(x, y) {
this.x = x || 0.0;
this.y = y || 0.0;
}
function PointOnCubicBezier(cp, t) {
var ax, bx, cx;
var ay, by, cy;
var tSquared, tCubed;
var result = new Point2D();
cx = 3.0 * (cp[1].x - cp[0].x);
bx = 3.0 * (cp[2].x - cp[1].x) - cx;
ax = cp[3].x - cp[0].x - cx - bx;
cy = 3.0 * (cp[1].y - cp[0].y);
by = 3.0 * (cp[2].y - cp[1].y) - cy;
ay = cp[3].y - cp[0].y - cy - by;
tSquared = t * t;
tCubed = tSquared * t;
result.x = ax * tCubed + bx * tSquared + cx * t + cp[0].x;
result.y = ay * tCubed + by * tSquared + cy * t + cp[0].y;
return result;
}
function ComputeBezier(cp, numberOfPoints, curve) {
var dt;
var i;
dt = 1.0 / (numberOfPoints - 1);
for (i = 0; i < numberOfPoints; i++) {
curve[i] = PointOnCubicBezier(cp, i * dt);
}
}
var cp = [
new Point2D(parseInt(p4[0]), parseInt(p4[1])),
new Point2D(p2[0], p2[1]),
new Point2D(p3[0], p3[1]),
new Point2D(p1[0], p1[1]),
];
var numberOfPoints = times;
var curve = [];
ComputeBezier(cp, numberOfPoints, curve);
return curve;
}
// 从 下往上滑动
function swipeTop(dw, dh, duration) {
if (!(typeof duration === 'number' && !isNaN(duration) && duration > 0)) {
duration = 400; // 降低时间,比如 10,可以起到自行滚动的效果
}
let grid = Math.round(dw * 0.1);
let xStart = Math.round(dw * 0.3);
let xEnd = Math.round(dw * 0.7);
let yStart = Math.round(dh * 0.25);
let yEnd = Math.round(dh * 0.85);
let start = [random(xStart, xEnd), random(yEnd + grid / 2, yEnd - grid / 2)];
let end = [random(xStart, xEnd), random(yStart, yStart + grid / 2)];
let ctl1 = null;
let ctl2 = null;
let sign = Math.round(Math.random());
if (sign === 0) {
ctl1 = [end[0] - random(grid, grid * 2), end[1] - random(0, grid)];
ctl2 = [end[0] + random(grid, grid * 2), end[1] + random(0, grid)];
} else {
ctl1 = [end[0] - random(grid, grid * 2), end[1] + random(0, grid)];
ctl2 = [end[0] + random(grid, grid * 2), end[1] - random(0, grid)];
}
let path = getBezierPath(start, ctl1, ctl2, end, 50);
gesture(duration, path);
}
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