style(首页): 头图柔光与柔和水波、宝宝不再形变；胎动踢出明显褶皱、加快连踢 (v26100410)
- 光束画在 1/6 小画布再放大，宽而柔；水波改为低分辨率正弦大片光影，去掉白色网状焦散 - 去掉孕囊 SVG 位移滤镜；孕囊中心区域水波/光束/微粒避开，宝宝脸不受影响 - 胎动：鼓包外放射状褶皱（左上亮右下暗、三层虚边），每一拍重新踢出、更深 - 连踢加「噔噔噔」快节奏（.22～.26s），26～33 周出现概率 40%→50% Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
168
js/hero-fx.js
168
js/hero-fx.js
@@ -7,7 +7,7 @@
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孕囊大小 = .hero-baby 的 --k（相对原 25 周囊的倍数），CSS 里围绕同一圆心缩放、带过渡。
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调试：URL 带 kidweek=12 强制按 12 周显示。
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② 阳光水波：#heroFx 一张画布，screen 混合叠在宝宝上、文字下。
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光束从顶上打进来 + 水底焦散 + 悬浮微粒；羊水囊整体挂 SVG 位移滤镜做液体折射（详见下面那段）。
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柔光束 + 柔和水波光影 + 悬浮微粒，宝宝区域避开（详见下面那段）。
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不在首页 / 页面隐藏 / 头图滚出视口时停画；系统「减少动态效果」下整块不画（CSS 也隐藏）。 */
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(function () {
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'use strict';
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@@ -60,138 +60,104 @@
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else setTimeout(() => { if (cur < 0) show(DEFAULT); }, 2500);
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/* ---------------- 阳光 + 水波 ----------------
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2026-10-04 二版（用户：「水波纹上面要有光束打进来，水波纹要模拟真实羊水的感觉」）：
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· 折射：.hero-baby（羊水囊 + 宝宝）挂一个 SVG 位移滤镜，噪声图慢慢变形 → 隔着一层液体看的那种轻微晃动
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· 焦散：水底那种不规则、不停变形的细亮网（游动点的细胞边界 + 正弦扭曲），低分辨率算完放大，囊附近更亮
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· 光束：从顶上斜着打进来，三层叠出软边，各自慢慢摆、忽明忽暗，越往下越散
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· 悬浮微粒：羊水里的小颗粒，慢慢漂、闪一下，经过光束时更亮 */
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2026-10-04 三版（用户：「光束太硬，要柔柔地射进来；水波纹可以有，但宝宝的脸不能变；不要白色网状水波纹」）：
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· 光束：画在 1/6 分辨率的小画布上再放大，边缘天然糊开 → 柔光；宽、淡、慢慢摆、忽明忽暗
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· 水波：极低分辨率算几层正弦叠出的大片明暗，放大后是柔和的、缓缓流动的光影（不是网）
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· 宝宝区域（孕囊中心 70% 半径内）水波压到很淡、光束减半；不再给孕囊挂任何形变滤镜，宝宝的脸一像素都不动
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· 悬浮微粒：羊水里的小颗粒，慢慢漂、闪一下 */
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const cv = document.getElementById('heroFx');
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if (!cv || reduce) return;
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const hero = cv.parentNode, home = document.getElementById('screen-home');
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const ctx = cv.getContext('2d');
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// 折射滤镜：baseFrequency 在 16 秒里来回变 → 噪声缓缓「流动」；位移 5px，看得出是液体，又不至于把宝宝扭坏
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const NS = 'http://www.w3.org/2000/svg';
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const svg = document.createElementNS(NS, 'svg');
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svg.setAttribute('width', '0'); svg.setAttribute('height', '0');
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svg.setAttribute('aria-hidden', 'true'); svg.style.position = 'absolute';
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svg.innerHTML = '<filter id="mbFluid" x="-4%" y="-4%" width="108%" height="108%" color-interpolation-filters="sRGB">' +
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'<feTurbulence type="fractalNoise" baseFrequency="0.011 0.016" numOctaves="2" seed="7" result="n">' +
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'<animate attributeName="baseFrequency" dur="16s" values="0.011 0.016;0.016 0.011;0.013 0.018;0.011 0.016" repeatCount="indefinite"/>' +
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'</feTurbulence><feDisplacementMap in="SourceGraphic" in2="n" scale="5" xChannelSelector="R" yChannelSelector="G"/></filter>';
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document.body.appendChild(svg);
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box.classList.add('is-fluid');
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const CW = 96; // 焦散低分辨率宽（太低会糊成团，看不出是光网）
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const RS = 6; // 光束小画布缩小倍数
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const rc = document.createElement('canvas'), rx = rc.getContext('2d');
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const CW = 32; // 水波低分辨率宽（越低越柔）
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const off = document.createElement('canvas'), oc = off.getContext('2d');
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let tick = 0, W = 0, H = 0, dpr = 1, ch = 0, img = null, seen = true, raf = 0, last = 0, prev = 0;
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let SX = 0, SY = 0, SR = 1; // 羊水囊圆心/半径（CSS px），焦散在囊附近更亮
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let SX = 0, SY = 0, SR = 1; // 孕囊圆心/半径（CSS px）
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function size() {
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const r = hero.getBoundingClientRect(), b = box.getBoundingClientRect();
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dpr = Math.min(devicePixelRatio || 1, 2);
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W = r.width; H = r.height;
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cv.width = Math.round(W * dpr); cv.height = Math.round(H * dpr);
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rc.width = Math.max(8, Math.round(W / RS)); rc.height = Math.max(8, Math.round(H / RS));
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ch = Math.max(8, Math.round(CW * H / W));
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off.width = CW; off.height = ch; img = oc.createImageData(CW, ch);
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SX = b.left - r.left + b.width / 2; SY = b.top - r.top + b.height / 2; SR = Math.max(b.width, 60) / 2;
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}
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// 焦散：真实水底那种不规则细亮网 = 一群慢慢游动的点的「细胞边界」（到最近两点距离差 ≈ 0 的地方最亮），
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// 坐标再加一点正弦扭曲让边线弯起来；大小两层叠加，一层快一层慢，网格才会像水一样不停变形
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function mkLayer(n, cell, seed) {
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let r = seed;
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const rnd = () => ((r = (r * 16807) % 2147483647) / 2147483647);
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return { cell, pts: Array.from({ length: n }, () => [rnd(), rnd(), rnd() * 6.28, .35 + rnd() * .5]) };
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// 宝宝保护：孕囊中心附近 → 0，囊边 → 1
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function guard(x, y) {
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const d = Math.hypot(x - SX, y - SY) / SR;
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return d < .45 ? 0 : d > .95 ? 1 : (d - .45) / .5;
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}
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const LAYERS = [[mkLayer(26, 22, 11), .8, 1], [mkLayer(14, 32, 29), .5, .8]];
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const PX = new Float32Array(40), PY = new Float32Array(40);
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function caustics(t) {
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const d = img.data, sx = SX / W * CW, sy = SY / H * ch, sr = SR / W * CW;
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const acc = caustics.acc && caustics.acc.length === CW * ch ? caustics.acc : (caustics.acc = new Float32Array(CW * ch));
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acc.fill(0);
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const k = CW / 120;
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for (const [L, gain, speed] of LAYERS) {
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const tt = t * speed, cell = L.cell * k, sg = 1 / (2 * (cell * .06) ** 2), n = L.pts.length;
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for (let i = 0; i < n; i++) {
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const [bx, by, ph, sp] = L.pts[i];
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PX[i] = bx * CW + Math.cos(tt * sp + ph) * cell * .35;
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PY[i] = by * ch + Math.sin(tt * sp * 1.3 + ph) * cell * .35;
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}
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for (let y = 0; y < ch; y++) {
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const ox = Math.sin(y * .11 / k + tt * .7) * 2.2 * k;
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for (let x = 0; x < CW; x++) {
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const wx = x + ox, wy = y + Math.sin(x * .09 / k - tt * .6) * 2.2 * k;
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let m1 = 1e9, m2 = 1e9;
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for (let i = 0; i < n; i++) {
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const dx = wx - PX[i], dy = wy - PY[i], q = dx * dx + dy * dy;
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if (q < m1) { m2 = m1; m1 = q; } else if (q < m2) m2 = q;
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}
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const e = Math.sqrt(m2) - Math.sqrt(m1);
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acc[y * CW + x] += Math.exp(-e * e * sg) * gain;
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}
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}
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}
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// 水波：四层不同方向、不同速度的长波叠加，取正半部分 → 一片片柔和的亮斑缓缓流过
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function water(t) {
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const d = img.data, T = t * .45;
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for (let y = 0; y < ch; y++) {
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for (let x = 0; x < CW; x++) {
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let v = acc[y * CW + x]; v = v >= 1 ? 1 : Math.pow(v, 1.3);
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// 囊里亮、囊外淡，上半部比下半部亮（光从上面来）
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const dd = Math.hypot(x - sx, y - sy) / sr;
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const w = (.3 + .7 * Math.max(0, 1 - Math.max(0, dd - .6) * 1.8)) * (1 - y / ch * .45);
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const u = x / CW * 6, v = y / CW * 6;
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let w = Math.sin(u * 1.1 + T) + Math.sin(v * 1.3 - T * .8 + u * .4) + Math.sin((u - v) * .9 + T * .6) + Math.sin(Math.hypot(u - 4.5, v - 1) * 1.6 - T * 1.1);
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w = w / 4; w = w > 0 ? w * w : 0; // 只留亮的那半，平方让过渡更软
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const X = x / CW * W, Y = y / ch * H;
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const g = .15 + .85 * guard(X, Y);
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const o = (y * CW + x) * 4;
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d[o] = 255; d[o + 1] = 240; d[o + 2] = 220; d[o + 3] = v * 255 * w;
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d[o] = 255; d[o + 1] = 238; d[o + 2] = 214; d[o + 3] = w * 200 * g * (1 - y / ch * .35);
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}
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}
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oc.putImageData(img, 0, 0);
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}
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function drawCaustics() {
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function drawWater() {
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ctx.globalCompositeOperation = 'lighter';
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ctx.imageSmoothingEnabled = true;
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ctx.globalAlpha = 1;
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ctx.imageSmoothingEnabled = true; ctx.imageSmoothingQuality = 'high';
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ctx.globalAlpha = .55;
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ctx.drawImage(off, 0, 0, W, H);
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ctx.globalAlpha = 1;
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}
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// 光束：光源在头图上方偏右的画外，斜着往左下打；每道画三层（宽/中/窄）叠出软边
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const RAYS = [[-.16, .030, .7], [-.07, .018, .9], [.01, .040, .6], [.09, .022, 1], [.17, .032, .7], [.26, .02, .55]];
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let rayA = [];
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// 柔光束：光源在头图上方偏右画外；每道是一条很宽的渐变扇形，画在小画布上再放大
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const RAYS = [[-.12, .07, .8], [0, .05, .7], [.11, .08, 1], [.23, .06, .7]];
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function rays(t) {
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const ox = W * .78, oy = -H * .9, L = H * 2.6;
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ctx.globalCompositeOperation = 'lighter';
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rayA = [];
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RAYS.forEach(([a0, w, al], i) => {
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const a = Math.PI * .58 + a0 + Math.sin(t * .11 + i * 1.9) * .025;
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const k = al * (.55 + .45 * Math.sin(t * .29 + i * 2.1)) * (.85 + .15 * Math.sin(t * 1.3 + i * 3.7));
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rayA.push([a, w, k]);
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[[2.2, .25], [1.3, .5], [.6, 1]].forEach(([wm, am]) => {
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const ww = w * wm;
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const gr = ctx.createLinearGradient(ox, oy, ox + Math.cos(a) * L * .75, oy + Math.sin(a) * L * .75);
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gr.addColorStop(0, 'rgba(255,250,230,0)');
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gr.addColorStop(.36, 'rgba(255,248,226,' + (.42 * k * am).toFixed(3) + ')');
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gr.addColorStop(.62, 'rgba(255,242,215,' + (.22 * k * am).toFixed(3) + ')');
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gr.addColorStop(1, 'rgba(255,232,200,0)');
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ctx.fillStyle = gr;
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ctx.beginPath(); ctx.moveTo(ox, oy);
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ctx.lineTo(ox + Math.cos(a - ww) * L, oy + Math.sin(a - ww) * L);
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ctx.lineTo(ox + Math.cos(a + ww) * L, oy + Math.sin(a + ww) * L);
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ctx.closePath(); ctx.fill();
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});
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const w = rc.width, h = rc.height, ox = w * .8, oy = -h * .9, L = h * 2.8;
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rx.setTransform(1, 0, 0, 1, 0, 0);
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rx.clearRect(0, 0, w, h);
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rx.globalCompositeOperation = 'lighter';
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RAYS.forEach(([a0, ww, al], i) => {
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const a = Math.PI * .6 + a0 + Math.sin(t * .09 + i * 1.9) * .03;
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const k = al * (.6 + .4 * Math.sin(t * .23 + i * 2.1));
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const wv = ww * (1 + .2 * Math.sin(t * .17 + i));
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const gr = rx.createLinearGradient(ox, oy, ox + Math.cos(a) * L * .8, oy + Math.sin(a) * L * .8);
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gr.addColorStop(0, 'rgba(255,248,228,0)');
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gr.addColorStop(.35, 'rgba(255,246,224,' + (.34 * k).toFixed(3) + ')');
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gr.addColorStop(.65, 'rgba(255,240,215,' + (.15 * k).toFixed(3) + ')');
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gr.addColorStop(1, 'rgba(255,235,205,0)');
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rx.fillStyle = gr;
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rx.beginPath(); rx.moveTo(ox, oy);
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rx.lineTo(ox + Math.cos(a - wv) * L, oy + Math.sin(a - wv) * L);
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rx.lineTo(ox + Math.cos(a + wv) * L, oy + Math.sin(a + wv) * L);
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rx.closePath(); rx.fill();
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});
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return [ox, oy];
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// 宝宝区域光束减半：在小画布上挖一个软边的「淡区」
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rx.globalCompositeOperation = 'destination-out';
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const sx = SX / RS, sy = SY / RS, sr = SR / RS, g = rx.createRadialGradient(sx, sy, 0, sx, sy, sr * .9);
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g.addColorStop(0, 'rgba(0,0,0,.5)'); g.addColorStop(.6, 'rgba(0,0,0,.35)'); g.addColorStop(1, 'rgba(0,0,0,0)');
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rx.fillStyle = g; rx.beginPath(); rx.arc(sx, sy, sr, 0, 6.2832); rx.fill();
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ctx.globalCompositeOperation = 'lighter';
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ctx.imageSmoothingEnabled = true; ctx.imageSmoothingQuality = 'high';
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ctx.drawImage(rc, 0, 0, W, H);
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}
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// 悬浮微粒：慢慢往上漂、左右游，忽明忽暗；落在光束里更亮
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const DOTS = Array.from({ length: 34 }, () => ({ x: Math.random(), y: Math.random(), r: .5 + Math.random() * 1.4,
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// 悬浮微粒：慢慢往上漂、左右游，忽明忽暗；孕囊中心附近不画，免得落在宝宝脸上
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const DOTS = Array.from({ length: 26 }, () => ({ x: Math.random(), y: Math.random(), r: .5 + Math.random() * 1.2,
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vx: (Math.random() - .5) * .006, vy: -(.004 + Math.random() * .008), ph: Math.random() * 6.3, sp: .6 + Math.random() * 1.4 }));
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function dots(t, dt, o) {
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function dots(t, dt) {
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ctx.globalCompositeOperation = 'lighter';
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for (const p of DOTS) {
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p.x += (p.vx + Math.sin(t * .5 + p.ph) * .002) * dt; p.y += p.vy * dt;
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if (p.y < -.03) { p.y = 1.03; p.x = Math.random(); }
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if (p.x < -.03) p.x = 1.03; else if (p.x > 1.03) p.x = -.03;
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const X = p.x * W, Y = p.y * H;
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let lit = 0;
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const ang = Math.atan2(Y - o[1], X - o[0]);
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for (const [a, w, k] of rayA) { const d = Math.abs(ang - a); if (d < w * 1.3) lit = Math.max(lit, k * (1 - d / (w * 1.3))); }
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const al = (.18 + .3 * (.5 + .5 * Math.sin(t * p.sp + p.ph))) * (1 + lit * 1.6);
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const X = p.x * W, Y = p.y * H, gd = guard(X, Y);
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if (gd <= 0) continue;
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const al = (.15 + .25 * (.5 + .5 * Math.sin(t * p.sp + p.ph))) * gd;
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const R = p.r * 2.4, g = ctx.createRadialGradient(X, Y, 0, X, Y, R);
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g.addColorStop(0, 'rgba(255,250,238,' + Math.min(al, .9).toFixed(3) + ')');
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g.addColorStop(0, 'rgba(255,250,238,' + al.toFixed(3) + ')');
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g.addColorStop(1, 'rgba(255,250,238,0)');
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ctx.fillStyle = g; ctx.beginPath(); ctx.arc(X, Y, R, 0, 6.2832); ctx.fill();
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}
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@@ -205,15 +171,15 @@
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const t = now / 1000;
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ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
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ctx.clearRect(0, 0, W, H);
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if ((tick ^= 1)) caustics(t); // 焦散 15fps 算一次就够（水底光网本来就慢），每帧照画
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drawCaustics();
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const o = rays(t);
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dots(t, dt, o);
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if ((tick ^= 1)) water(t); // 水波 15fps 算一次就够，每帧照画
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drawWater();
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rays(t);
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dots(t, dt);
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}
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function kick() { if (!raf) raf = requestAnimationFrame(frame); }
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size();
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addEventListener('resize', () => { size(); kick(); });
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box.addEventListener('transitionend', size); // 换阶段后孕囊尺寸变了，焦散的「囊附近更亮」跟着挪
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box.addEventListener('transitionend', size); // 换阶段后孕囊尺寸变了，保护区跟着挪
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document.addEventListener('visibilitychange', kick);
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if (home) new MutationObserver(kick).observe(home, { attributes: true, attributeFilter: ['class'] });
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if ('IntersectionObserver' in window) new IntersectionObserver(es => { seen = es[0].isIntersecting; kick(); }).observe(hero);
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