Hollow Shell

1"use client";
2 
3import type { CSSProperties } from "react";
4 
5import { cx } from "@/components/ui/cellforge-core";
6import { resolveDmxColorTokens } from "@/components/ui/cellforge-core";
7import { useCellForgePhases } from "@/components/ui/cellforge-hooks";
8import { styleOpacity, stylePx } from "@/components/ui/cellforge-core";
9import { remapOpacityToTriplet } from "@/components/ui/cellforge-core";
10import { dmxBloomRootActive, dmxDotBloomParts } from "@/components/ui/cellforge-core";
11import { useCyclePhase } from "@/components/ui/cellforge-hooks";
12import { usePrefersReducedMotion } from "@/components/ui/cellforge-hooks";
13import type { CellForgeCommonProps } from "@/components/ui/cellforge-core";
14 
15export type CellAngle18Props = CellForgeCommonProps;
16 
17const MATRIX_SIZE = 7;
18 
19const CORE_DIM = 0.1;
20const SHELL_LOW = 0.22;
21const SHELL_HIGH = 0.96;
22 
23const TRIANGLE_CELLS = new Set([
24  "1,3",
25  "2,2",
26  "2,4",
27  "3,1",
28  "3,3",
29  "3,5",
30  "4,0",
31  "4,2",
32  "4,4",
33  "4,6"
34]);
35 
36function isWithinTriangleMask(row: number, col: number): boolean {
37  if (row < 0 || row >= MATRIX_SIZE || col < 0 || col >= MATRIX_SIZE) {
38    return false;
39  }
40 
41  return TRIANGLE_CELLS.has(`${row},${col}`);
42}
43 
44function smoothstep01(edge0: number, edge1: number, x: number): number {
45  if (edge1 <= edge0) {
46    return x >= edge1 ? 1 : 0;
47  }
48  const t = Math.max(0, Math.min(1, (x - edge0) / (edge1 - edge0)));
49  return t * t * (3 - 2 * t);
50}
51 
52/**
53 * Heart cell stays dim while the outer shell breathes in sync — inverted emphasis vs center-led
54 * corona loaders.
55 */
56function opacityForCell(row: number, col: number, phase: number): number {
57  if (row === 3 && col === 3) {
58    return CORE_DIM;
59  }
60 
61  const breathe = 0.5 + 0.5 * Math.sin(phase * Math.PI * 2);
62  const crest = smoothstep01(0.2, 0.94, breathe);
63  return SHELL_LOW + crest * (SHELL_HIGH - SHELL_LOW);
64}
65 
66export function CellAngle18({
67  size = 30,
68  dotSize = 6.5,
69  color = "currentColor",
70  colorPreset,
71  ariaLabel = "Loading",
72  className,
73  muted = false,
74  bloom = false,
75  halo = 0,
76  dotClassName,
77  dotShape = "circle",
78  speed = 1.6,
79  animated = true,
80  hoverAnimated = false,
81  cellPadding,
82  opacityBase,
83  opacityMid,
84  opacityPeak
85}: CellAngle18Props) {
86  const reducedMotion = usePrefersReducedMotion();
87  const { phase: matrixPhase, onMouseEnter, onMouseLeave } = useCellForgePhases({
88    animated: Boolean(animated && !reducedMotion),
89    hoverAnimated: Boolean(hoverAnimated && !reducedMotion),
90    speed
91  });
92// … truncated