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non-reciprocal_vicsek.html
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non-reciprocal_vicsek.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Non-Reciprocal Vicsek Model</title>
<style>
body {
margin: 0;
overflow: hidden;
font-family: Arial, sans-serif;
}
.collapsed fieldset {
display: none;
}
.control-toggle {
position: fixed;
top: 11px;
left: 15px;
z-index: 100;
cursor: pointer;
font-weight: bold;
border-radius: 5px;
}
#simulationCanvas {
display: block;
position: top;
}
#controlCenter {
position: absolute;
left: 10px;
top: 10px;
padding: 10px;
background-color: rgba(255, 255, 255, 0.7);
border-radius: 5px;
}
#controlCenter {
display: flex;
flex-wrap: wrap;
justify-content: center;
align-items: center;
background-color: rgba(255, 255, 255, 0.8);
padding: 10px;
border-radius: 5px;
}
fieldset {
border: 1px solid #ccc;
border-radius: 5px;
padding: 15px;
margin-bottom: 10px;
}
legend {
font-weight: bold;
}
.checkboxContainer {
display: flex;
flex-direction: column;
align-items: center;
margin: 5px;
}
.sliderInput {
width: 100%;
}
.sliderContainer label {
margin-bottom: 5px;
}
.sliderContainer {
display: block;
width: 160px;
text-align: left;
}
.slider {
margin-left: 5px;
}
.slider-container {
display: block;
width: 120px;
text-align: center;
}
</style>
</head>
<body>
<canvas id="simulationCanvas"></canvas>
<div id="controlCenter">
<div class="control-toggle" id="controlToggle">●</div>
<fieldset>
<legend>Controls</legend>
<div class="sliderContainer">
<label>Particles: <span id="numParticlesValue">1500</span></label>
<input type="range" min="10" max="3000" value="1500" class="slider sliderInput" id="numParticles">
</div>
<div class="sliderContainer">
<label>Speed: <span id="speedValue">7</span></label>
<input type="range" min="0.1" max="15" step="0.1" value="7" class="slider sliderInput" id="speed">
</div>
<div class="sliderContainer">
<label>Fish A Ratio: <span id="fishARatioValue">0.5</span></label>
<input type="range" min="0" max="1" step="0.01" value="0.5" class="slider sliderInput" id="fishARatio">
</div>
<div class="sliderContainer">
<label>A-A / B-B: <span id="sameFishWeightValue">.5</span></label>
<input type="range" min="0" max="1" step="0.01" value=".5" class="slider sliderInput" id="sameFishWeight">
</div>
<div class="sliderContainer">
<label>B-A: <span id="baFishWeightValue">-0.2</span></label>
<input type="range" min="-1" max="1" step="0.01" value="-0.2" class="slider sliderInput" id="baFishWeight">
</div>
<div class="sliderContainer">
<label>A-B: <span id="abFishWeightValue">1</span></label>
<input type="range" min="-1" max="1" step="0.01" value="1" class="slider sliderInput" id="abFishWeight">
</div>
<div class="sliderContainer">
<label>Interaction Radius: <span id="radiusValue">20</span></label>
<input type="range" min="1" max="100" value="20" class="slider sliderInput" id="radius">
</div>
<div class="sliderContainer">
<label>Noise: <span id="noiseValue">0.1</span></label>
<input type="range" min="0" max="1" step="0.001" value="0.1" class="slider sliderInput" id="noise">
</div>
<div class="sliderContainer">
<label>Particle Size: <span id="particleSizeValue">5</span></label>
<input type="range" min="1" max="20" value="5" class="slider sliderInput" id="particleSize">
</div>
<div class="selectContainer">
<label>Particle Type:</label>
<select id="particleType">
<option value="arrow">Fish</option>
<option value="dot">Dot</option>
</select>
</div>
<div >
<label for="invertColors">Invert Color:</label>
<input type="checkbox" id="invertColors">
</div>
</fieldset>
</div>
<script>
const canvas = document.getElementById('simulationCanvas');
const ctx = canvas.getContext('2d');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
const numParticlesSlider = document.getElementById('numParticles');
const numParticlesValue = document.getElementById('numParticlesValue');
const speedSlider = document.getElementById('speed');
const speedValue = document.getElementById('speedValue');
const radiusSlider = document.getElementById('radius');
const radiusValue = document.getElementById('radiusValue');
const noiseSlider = document.getElementById('noise');
const noiseValue = document.getElementById('noiseValue');
const particleSizeSlider = document.getElementById('particleSize');
const particleSizeValue = document.getElementById('particleSizeValue');
const particleTypeSelect = document.getElementById('particleType');
const invertColorsCheckbox = document.getElementById('invertColors');
const fishARatioSlider = document.getElementById('fishARatio');
const fishARatioValue = document.getElementById('fishARatioValue');
const sameFishWeightSlider = document.getElementById('sameFishWeight');
const sameFishWeightValue = document.getElementById('sameFishWeightValue');
const baFishWeightSlider = document.getElementById('baFishWeight');
const baFishWeightValue = document.getElementById('baFishWeightValue');
const abFishWeightSlider = document.getElementById('abFishWeight');
const abFishWeightValue = document.getElementById('abFishWeightValue');
let NUM_PARTICLES = parseInt(numParticlesSlider.value);
let SPEED = parseFloat(speedSlider.value);
let INTERACTION_RADIUS = parseFloat(radiusSlider.value);
let NOISE = parseFloat(noiseSlider.value);
let PARTICLE_SIZE = parseFloat(particleSizeSlider.value);
let PARTICLE_TYPE = particleTypeSelect.value;
let INVERT_COLORS = invertColorsCheckbox.checked;
let FISH_A_RATIO = parseFloat(fishARatioSlider.value);
let SAME_FISH_WEIGHT = parseFloat(sameFishWeightSlider.value);
let OPPOSITE_FISH_WEIGHT = parseFloat(baFishWeightSlider.value);
let AB_FISH_WEIGHT = parseFloat(abFishWeightSlider.value);
document.addEventListener('DOMContentLoaded', () => {
const controlCenter = document.getElementById('controlCenter');
const controlToggle = document.getElementById('controlToggle');
controlToggle.addEventListener('click', () => {
controlCenter.classList.toggle('collapsed');
});
});
abFishWeightSlider.oninput = function() {
AB_FISH_WEIGHT = parseFloat(this.value);
abFishWeightValue.innerHTML = this.value;
}
fishARatioSlider.oninput = function() {
FISH_A_RATIO = parseFloat(this.value);
fishARatioValue.innerHTML = this.value;
resetParticles();
}
sameFishWeightSlider.oninput = function() {
SAME_FISH_WEIGHT = parseFloat(this.value);
sameFishWeightValue.innerHTML = this.value;
}
baFishWeightSlider.oninput = function() {
OPPOSITE_FISH_WEIGHT = parseFloat(this.value);
baFishWeightValue.innerHTML = this.value;
}
numParticlesSlider.oninput = function() {
NUM_PARTICLES = parseInt(this.value);
numParticlesValue.innerHTML = this.value;
resetParticles();
}
speedSlider.oninput = function() {
SPEED = parseFloat(this.value);
speedValue.innerHTML = this.value;
}
radiusSlider.oninput = function() {
INTERACTION_RADIUS = parseFloat(this.value);
radiusValue.innerHTML = this.value;
}
noiseSlider.oninput = function() {
NOISE = parseFloat(this.value);
noiseValue.innerHTML = this.value;
}
particleSizeSlider.oninput = function() {
PARTICLE_SIZE = parseFloat(this.value);
particleSizeValue.innerHTML = this.value;
}
particleTypeSelect.onchange = function() {
PARTICLE_TYPE = this.value;
}
invertColorsCheckbox.onchange = function() {
INVERT_COLORS = this.checked;
}
class Particle {
constructor(x, y, angle, fishType) {
this.x = x;
this.y = y;
this.angle = angle;
this.fishType = fishType;
}
update(particles) {
let sumX = 0;
let sumY = 0;
let count = 0;
particles.forEach(particle => {
const dx = this.x - particle.x;
const dy = this.y - particle.y;
const distance = Math.sqrt(dx * dx + dy * dy);
if (distance < INTERACTION_RADIUS * 2 && distance > 0) {
let weight;
if (this.fishType === 'A' && particle.fishType === 'B') {
weight = AB_FISH_WEIGHT;
} else if (this.fishType === 'B' && particle.fishType === 'A') {
weight = OPPOSITE_FISH_WEIGHT;
} else {
weight = this.fishType === particle.fishType ? SAME_FISH_WEIGHT : OPPOSITE_FISH_WEIGHT;
}
sumX += Math.cos(particle.angle) * weight;
sumY += Math.sin(particle.angle) * weight;
count += Math.abs(weight);
}
});
if (count > 0) {
const avgAngle = Math.atan2(sumY / count, sumX / count);
const noise = (Math.random() - 0.5) * NOISE;
this.angle = (avgAngle + noise + 2 * Math.PI) % (2 * Math.PI);
} else {
const noise = (Math.random() - 0.5) * NOISE;
this.angle = (this.angle + noise + 2 * Math.PI) % (2 * Math.PI);
}
this.angle += (Math.random() - 0.5) * NOISE ;
this.x += SPEED * Math.cos(this.angle);
this.y += SPEED * Math.sin(this.angle);
if (this.x < 0) this.x += canvas.width;
if (this.x > canvas.width) this.x -= canvas.width;
if (this.y < 0) this.y += canvas.height;
if (this.y > canvas.height) this.y -= canvas.height;
}
draw() {
// 画出 interaction radius
ctx.beginPath();
ctx.arc(this.x, this.y, INTERACTION_RADIUS, 0, 2 * Math.PI);
ctx.fillStyle = this.fishType === 'A' ? 'rgba(200, 50, 50, 0.01)' : 'rgba(50, 50, 200, 0.01)';
ctx.fill();
if (INVERT_COLORS) {
ctx.fillStyle = this.fishType === 'A' ? 'rgb(255, 100, 100)' : 'rgb(100, 100, 255)';
ctx.strokeStyle = this.fishType === 'A' ? 'rgb(255, 100, 100)' : 'rgb(100, 100, 255)';
} else {
ctx.fillStyle = this.fishType === 'A' ? 'rgb(200, 50, 50)' : 'rgb(50, 50, 200)';
ctx.strokeStyle = this.fishType === 'A' ? 'rgb(200, 50, 50)' : 'rgb(50, 50, 200)';
}
if (PARTICLE_TYPE === 'dot') {
ctx.beginPath();
ctx.arc(this.x, this.y, PARTICLE_SIZE, 0, 2 * Math.PI);
ctx.fill();
} else if (PARTICLE_TYPE === 'arrow') {
ctx.save();
ctx.translate(this.x, this.y);
ctx.rotate(this.angle);
// 鱼的身体
ctx.beginPath();
ctx.moveTo(0, 0);
ctx.quadraticCurveTo(PARTICLE_SIZE * 1.4, -PARTICLE_SIZE, PARTICLE_SIZE * 1.7, 0);
ctx.quadraticCurveTo(PARTICLE_SIZE * 1.4, PARTICLE_SIZE, 0, 0);
ctx.fill();
// 鱼的尾巴
ctx.beginPath();
ctx.moveTo(-PARTICLE_SIZE * 0.2, 0);
ctx.lineTo(-PARTICLE_SIZE * 1.2, -PARTICLE_SIZE / 2);
ctx.lineTo(-PARTICLE_SIZE * 1.2, PARTICLE_SIZE / 2);
ctx.closePath();
ctx.fill();
// 鱼头
ctx.beginPath();
ctx.arc(PARTICLE_SIZE * 1.7, 0, PARTICLE_SIZE / 2, 0, 2 * Math.PI);
ctx.fill();
ctx.restore();
}
}
}
let particles = [];
function createParticle() {
const x = Math.random() * canvas.width;
const y = Math.random() * canvas.height;
const angle = (Math.random())* Math.PI *2 ;
const fishType = Math.random() < FISH_A_RATIO ? 'A' : 'B';
const particle = new Particle(x, y, angle, fishType);
return particle;
}
function resetParticles() {
particles = [];
for (let i = 0; i < NUM_PARTICLES; i++) {
particles.push(createParticle());
}
}
resetParticles();
function animate() {
if (INVERT_COLORS) {
ctx.fillStyle = 'black';
ctx.fillRect(0, 0, canvas.width, canvas.height);
} else {
ctx.fillStyle = 'white';
ctx.fillRect(0, 0, canvas.width, canvas.height);
}
particles.forEach(particle => {
particle.update(particles);
particle.draw();
});
requestAnimationFrame(animate);
}
animate();
</script>
</body>
</html>