Epilepsy_Test/motion.html at main · alexanderdfox/Epilepsy_Test · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Combined Collatz & Pi Spiral Blocks</title>
<style>
body{
	margin:0;
	background:#000;
	color:white;
	font-family:Arial;
	display:flex;
	flex-direction:column;
	align-items:center;
	justify-content:flex-start;
	height:100vh;
}

#controls{
	padding:12px;
	display:flex;
	flex-wrap:wrap;
	gap:12px;
}

#canvasContainer{
	flex:1;
	display:flex;
	align-items:center;
	justify-content:center;
	width:100%;
}

canvas{
	background:black;
	max-width:95vw;
	max-height:90vh;
}

label{ margin-right:6px; }
input{ width:80px; }
</style>
</head>

<body>

<div id="controls">

<!-- Collatz Controls -->
<div>
<h3>Collatz Spiral</h3>
<label>Steps</label>
<input id="collatzSteps" type="number" value="666" min="10" max="10000">
<label>Block</label>
<input id="collatzBlock" type="number" value="10" min="2" max="30">
<label>Start n</label>
<input id="collatzStart" type="number" value="27" min="2"><br>
<label>Spin Dir</label>
<select id="collatzDir">
	<option value="1">Clockwise</option>
	<option value="-1">Counterclockwise</option>
</select>
<button onclick="generateCollatz()">Generate</button>
</div>

<!-- Pi Controls -->
<div>
<h3>Pi Spiral</h3>
<label>Digits</label>
<input id="piDigits" type="number" value="666" min="10" max="5000">
<label>Block</label>
<input id="piBlock" type="number" value="10" min="2" max="30"><br>
<label>Spin Dir</label>
<select id="piDir">
	<option value="1">Clockwise</option>
	<option value="-1">Counterclockwise</option>
</select>
<button onclick="generatePi()">Generate</button>
</div>

</div>

<div id="canvasContainer">
<canvas id="canvas"></canvas>
</div>

<script>
const canvas = document.getElementById("canvas")
const ctx = canvas.getContext("2d")

const appleColors = [
"#61bb46","#fdb827","#f5821f","#e03a3e","#963d97","#009ddc"
]

// -------------------- Collatz --------------------
let collatzBlocks=[]
let collatzRotation=0
const COLL_ANGLE_STEP = 11 * Math.PI / 180
const COLL_RADIUS_STEP = 0.2

function collatzDigits(start, steps){
	let n = BigInt(start)
	let digits=[]
	for(let i=0;i<steps;i++){
		digits.push(Number(n % 10n))
		if(n===1n) break
		if(n % 2n === 0n) n = n / 2n
		else n = 3n*n + 1n
	}
	return digits
}

function generateCollatz(){
	let STEPS = parseInt(document.getElementById("collatzSteps").value)
	let BLOCK = parseInt(document.getElementById("collatzBlock").value)
	let START = parseInt(document.getElementById("collatzStart").value)
	let digits = collatzDigits(START, STEPS)
	collatzBlocks=[]
	let angle=0, radius=0, maxExtent=0, positions=[]
	for(let i=0;i<digits.length;i++){
		radius+=COLL_RADIUS_STEP
		angle+=COLL_ANGLE_STEP
		let x=radius*Math.cos(angle)
		let y=radius*Math.sin(angle)
		positions.push([x,y])
		maxExtent=Math.max(maxExtent,Math.abs(x),Math.abs(y))
	}
	adjustCanvas(maxExtent)
	for(let p of positions){
		let px=p[0]*BLOCK
		let py=p[1]*BLOCK
		collatzBlocks.push({x:px, y:py, size:BLOCK, color:appleColors[Math.floor(Math.random()*appleColors.length)]})
	}
}

// -------------------- Pi --------------------
let piBlocks=[]
let piRotation=0
const PI_ANGLE_STEP = 11 * Math.PI / 180
const PI_RADIUS_STEP = 0.2

function piDigits(n){
	let q=1n,r=0n,t=1n,k=1n,m=3n,x=3n
	let digits=[]
	while(digits.length < n){
		if(4n*q + r - t < m*t){
			digits.push(Number(m))
			let q2 = 10n*q
			let r2 = 10n*(r - m*t)
			let t2 = t
			let k2 = k
			let m2 = (10n*(3n*q + r))/t - 10n*m
			let x2 = x
			q=q2; r=r2; t=t2; k=k2; m=m2; x=x2
		}else{
			let q2 = q*k
			let r2 = (2n*q + r)*x
			let t2 = t*x
			let k2 = k+1n
			let m2 = (q*(7n*k+2n) + r*x)/(t*x)
			let x2 = x+2n
			q=q2; r=r2; t=t2; k=k2; m=m2; x=x2
		}
	}
	return digits
}

function generatePi(){
	let DIGITS = parseInt(document.getElementById("piDigits").value)
	let BLOCK = parseInt(document.getElementById("piBlock").value)
	let digits = piDigits(DIGITS)
	piBlocks=[]
	let angle=0, radius=0, maxExtent=0, positions=[]
	for(let i=0;i<digits.length;i++){
		radius+=PI_RADIUS_STEP
		angle+=PI_ANGLE_STEP
		let x=radius*Math.cos(angle)
		let y=radius*Math.sin(angle)
		positions.push([x,y])
		maxExtent=Math.max(maxExtent,Math.abs(x),Math.abs(y))
	}
	adjustCanvas(maxExtent)
	for(let p of positions){
		let px=p[0]*BLOCK
		let py=p[1]*BLOCK
		piBlocks.push({x:px, y:py, size:BLOCK, color:appleColors[Math.floor(Math.random()*appleColors.length)]})
	}
}

// -------------------- Canvas Adjustment --------------------
function adjustCanvas(maxExtent){
	let size = (maxExtent + 5) * 20
	if(size < canvas.width) size = canvas.width
	canvas.width = size
	canvas.height = size
}

// -------------------- Draw --------------------
function draw(){
	ctx.clearRect(0,0,canvas.width,canvas.height)
	const centerX = canvas.width/2
	const centerY = canvas.height/2

	const collatzDir = parseInt(document.getElementById("collatzDir").value)
	const piDir = parseInt(document.getElementById("piDir").value)

	// Collatz spiral
	ctx.save()
	ctx.translate(centerX, centerY)
	collatzRotation += 0.003 * collatzDir
	ctx.rotate(collatzRotation)
	for(let b of collatzBlocks){
		ctx.fillStyle=b.color
		ctx.fillRect(b.x, b.y, b.size, b.size)
	}
	ctx.restore()

	// Pi spiral
	ctx.save()
	ctx.translate(centerX, centerY)
	piRotation += 0.002 * piDir
	ctx.rotate(piRotation)
	for(let b of piBlocks){
		ctx.fillStyle=b.color
		ctx.fillRect(b.x, b.y, b.size, b.size)
	}
	ctx.restore()

	requestAnimationFrame(draw)
}

// -------------------- Init --------------------
generateCollatz()
generatePi()
draw()
</script>

</body>
</html>