Glass

1"use client";
2 
3import {
4  GlassWebGLRenderer,
5  isRasterChild,
6  webglAvailable,
7} from "@/components/ui/glass-webgl";
8import { cn } from "@/lib/utils";
9import {
10  type ComponentProps,
11  type ReactNode,
12  type RefObject,
13  useCallback,
14  useEffect,
15  useId,
16  useRef,
17  useState,
18  useSyncExternalStore,
19} from "react";
20 
21const SLOTS = 5;
22const MAP_CACHE_LIMIT = 64;
23const EDGE_BIAS = 0.5;
24 
25interface MapParams {
26  depth: number;
27  domeDepth: number;
28  edgeExponent: number;
29  edgeStrength: number;
30  edgeWidth: number;
31  glowExponent: number;
32  glowSpread: number;
33  glowStrength: number;
34  halfH: number;
35  halfW: number;
36  radius: number;
37  size: number;
38  splay: number;
39  specularAngle: number;
40  sdfBoundary?: boolean;
41  edgeFalloff?: boolean;
42  alphaBlend?: boolean;
43}
44 
45interface GlassDynamics {
46  zoom?: number;
47  depthMul?: number;
48  mapDims?: { halfW: number; halfH: number; radius: number };
49}
50 
51function clamp01(v: number): number {
52  return v < 0 ? 0 : v > 1 ? 1 : v;
53}
54 
55function erf(x: number): number {
56  return Math.tanh(1.7724538509 * x);
57}
58 
59function sphereAvgSlope(r: number, halfDim: number): number {
60  let sum = 0;
61  for (let i = 0; i <= 200; i++) {
62    const a = (i / 200) * halfDim;
63    const s = a / Math.sqrt(r * r - a * a);
64    sum += i === 0 || i === 200 ? 0.5 * s : s;
65  }
66  return sum / 200;
67}
68 
69interface DomeConstants {
70  rx: number;
71  ry: number;
72  scaleX: number;
73  scaleY: number;
74}
75 
76function computeDomeConstants(
77  domeDepth: number,
78  halfW: number,
79  halfH: number
80): DomeConstants {
81  const h = Math.max(0.01, Math.min(domeDepth, Math.min(halfW, halfH) - 1));
82  const rx = (halfW * halfW + h * h) / (2 * h);
83  const ry = (halfH * halfH + h * h) / (2 * h);
84  const ax = sphereAvgSlope(rx, halfW);
85  const ay = sphereAvgSlope(ry, halfH);
86  return {
87    rx,
88    ry,
89    scaleX: ax > 0 ? 0.5 / ax : 1,
90    scaleY: ay > 0 ? 0.5 / ay : 1,
91  };
92}
93 
94function domeGradient(p: number, r: number, scale: number): number {
95  const c = Math.min(p, 0.999 * r);
96  return (c / Math.sqrt(r * r - c * c)) * scale;
97}
98 
99function generateLensMap(p: MapParams): string | null {
100  if (p.halfW < 2 || p.halfH < 2) {
101    return null;
102  }
103  const sdfBoundary = p.sdfBoundary ?? true;
104  const edgeFalloff = p.edgeFalloff ?? true;
105  const size = p.size;
106  const canvas = document.createElement("canvas");
107  canvas.width = size;
108  canvas.height = size;
109  const ctx = canvas.getContext("2d");
110  if (!ctx) {
111    return null;
112  }
113  const image = ctx.createImageData(size, size);
114// … truncated