Letter 3d Swap Explanation Top Demo

1/*
2 * If you're reading this file, you're probably looking for the explanation demo.
3 * Keep in my mind this demo contains some extra transforms that are only needed
4 * for making the animation prettier, and not necessary for the actual functionality.
5 * There is a lot of messy code here, so I advise you not to try learn from it.
6 * Please refer to the actual documentation for more details.
7 */
8"use client"
9 
10import { useEffect, useState } from "react"
11import { AnimatePresence, motion } from "motion/react"
12 
13interface AxisHelperProps {
14  axisLength: number
15}
16 
17export const AxisHelper = ({ axisLength }: AxisHelperProps) => {
18  // Arrowhead size
19  const arrowSize = 12
20 
21  return (
22    <div
23      className="pointer-events-none transform-3d"
24      style={{
25        transform: "translateY(-100px) translateZ(-100px) translateX(-100px)",
26      }}
27    >
28      {/* X axis (red, right) */}
29      <svg
30        width={axisLength + arrowSize}
31        height={arrowSize * 2}
32        style={{
33          position: "absolute",
34          left: 0,
35          top: 0,
36          transform: `translateY(-${arrowSize}px)`,
37        }}
38      >
39        <line
40          x1={0}
41          y1={arrowSize}
42          x2={axisLength}
43          y2={arrowSize}
44          stroke="currentColor"
45          strokeOpacity="0.6"
46          strokeWidth={2}
47          strokeDasharray="6,4"
48        />
49        <polygon
50          points={`
51              ${axisLength},${arrowSize}
52              ${axisLength - arrowSize},${arrowSize - 5}
53              ${axisLength - arrowSize},${arrowSize + 5}
54            `}
55          fill="currentColor"
56        />
57      </svg>
58 
59      {/* Y axis (green, up) */}
60      <svg
61        width={arrowSize * 10}
62        height={axisLength + arrowSize}
63        style={{
64          position: "absolute",
65          left: 0,
66          top: 0,
67          transform: `translateX(-${arrowSize}px) translateY(-${axisLength}px)`,
68        }}
69      >
70        <line
71          x1={arrowSize}
72          y1={axisLength}
73          x2={arrowSize}
74          y2={0}
75          stroke="currentColor"
76          strokeOpacity="0.6"
77          strokeWidth={2}
78          strokeDasharray="6,4"
79        />
80        <polygon
81          points={`
82              ${arrowSize},0
83              ${arrowSize - 5},${arrowSize}
84              ${arrowSize + 5},${arrowSize}
85            `}
86          fill="currentColor"
87        />
88      </svg>
89 
90      <svg
91        width={arrowSize * 2}
92        height={axisLength + arrowSize}
93        style={{
94// … truncated