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| 1 | +class NeuralNetwork { |
| 2 | + constructor() { |
| 3 | + this.canvas = document.getElementById('neural-network-bg'); |
| 4 | + this.ctx = this.canvas.getContext('2d'); |
| 5 | + this.particles = []; |
| 6 | + this.pulses = []; // Array to store active pulses |
| 7 | + this.particleCount = 100; |
| 8 | + this.connectionDistance = 150; |
| 9 | + this.mouseDistance = 200; |
| 10 | + |
| 11 | + this.mouse = { |
| 12 | + x: null, |
| 13 | + y: null |
| 14 | + }; |
| 15 | + |
| 16 | + this.init(); |
| 17 | + this.animate(); |
| 18 | + |
| 19 | + window.addEventListener('resize', () => this.resize()); |
| 20 | + window.addEventListener('mousemove', (e) => this.handleMouseMove(e)); |
| 21 | + window.addEventListener('mouseout', () => this.handleMouseOut()); |
| 22 | + } |
| 23 | + |
| 24 | + init() { |
| 25 | + this.resize(); |
| 26 | + this.createParticles(); |
| 27 | + } |
| 28 | + |
| 29 | + resize() { |
| 30 | + this.canvas.width = window.innerWidth; |
| 31 | + this.canvas.height = window.innerHeight; |
| 32 | + this.createParticles(); // Recreate particles on resize to maintain density |
| 33 | + } |
| 34 | + |
| 35 | + createParticles() { |
| 36 | + this.particles = []; |
| 37 | + // Reduced density for a cleaner look (larger divisor) |
| 38 | + const area = this.canvas.width * this.canvas.height; |
| 39 | + this.particleCount = Math.floor(area / 25000); |
| 40 | + |
| 41 | + for (let i = 0; i < this.particleCount; i++) { |
| 42 | + this.particles.push({ |
| 43 | + x: Math.random() * this.canvas.width, |
| 44 | + y: Math.random() * this.canvas.height, |
| 45 | + // Much slower velocity for a professional, calm feel |
| 46 | + vx: (Math.random() - 0.5) * 0.3, |
| 47 | + vy: (Math.random() - 0.5) * 0.3, |
| 48 | + size: Math.random() * 1.5 + 0.5, // Smaller particles |
| 49 | + color: '#00f2ff' |
| 50 | + }); |
| 51 | + } |
| 52 | + } |
| 53 | + |
| 54 | + handleMouseMove(e) { |
| 55 | + this.mouse.x = e.x; |
| 56 | + this.mouse.y = e.y; |
| 57 | + } |
| 58 | + |
| 59 | + handleMouseOut() { |
| 60 | + this.mouse.x = null; |
| 61 | + this.mouse.y = null; |
| 62 | + } |
| 63 | + |
| 64 | + animate() { |
| 65 | + this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); |
| 66 | + |
| 67 | + // Update and draw particles |
| 68 | + for (let i = 0; i < this.particles.length; i++) { |
| 69 | + const p = this.particles[i]; |
| 70 | + |
| 71 | + // Move |
| 72 | + p.x += p.vx; |
| 73 | + p.y += p.vy; |
| 74 | + |
| 75 | + // Bounce off edges |
| 76 | + if (p.x < 0 || p.x > this.canvas.width) p.vx *= -1; |
| 77 | + if (p.y < 0 || p.y > this.canvas.height) p.vy *= -1; |
| 78 | + |
| 79 | + // Mouse interaction |
| 80 | + if (this.mouse.x != null) { |
| 81 | + const dx = this.mouse.x - p.x; |
| 82 | + const dy = this.mouse.y - p.y; |
| 83 | + const distance = Math.sqrt(dx * dx + dy * dy); |
| 84 | + |
| 85 | + if (distance < this.mouseDistance) { |
| 86 | + const forceDirectionX = dx / distance; |
| 87 | + const forceDirectionY = dy / distance; |
| 88 | + const force = (this.mouseDistance - distance) / this.mouseDistance; |
| 89 | + // Gentler interaction |
| 90 | + const directionX = forceDirectionX * force * 0.05; |
| 91 | + const directionY = forceDirectionY * force * 0.05; |
| 92 | + |
| 93 | + p.vx += directionX; |
| 94 | + p.vy += directionY; |
| 95 | + } |
| 96 | + } |
| 97 | + |
| 98 | + // Draw particle |
| 99 | + this.ctx.beginPath(); |
| 100 | + this.ctx.arc(p.x, p.y, p.size, 0, Math.PI * 2); |
| 101 | + this.ctx.fillStyle = `rgba(0, 242, 255, 0.5)`; // Semi-transparent particles |
| 102 | + this.ctx.fill(); |
| 103 | + |
| 104 | + // Connect particles |
| 105 | + for (let j = i; j < this.particles.length; j++) { |
| 106 | + const p2 = this.particles[j]; |
| 107 | + const dx = p.x - p2.x; |
| 108 | + const dy = p.y - p2.y; |
| 109 | + const distance = Math.sqrt(dx * dx + dy * dy); |
| 110 | + |
| 111 | + if (distance < this.connectionDistance) { |
| 112 | + this.ctx.beginPath(); |
| 113 | + // Subtler connections (lower opacity) |
| 114 | + const opacity = (1 - distance / this.connectionDistance) * 0.15; |
| 115 | + this.ctx.strokeStyle = `rgba(0, 242, 255, ${opacity})`; |
| 116 | + this.ctx.lineWidth = 1; |
| 117 | + this.ctx.moveTo(p.x, p.y); |
| 118 | + this.ctx.lineTo(p2.x, p2.y); |
| 119 | + this.ctx.stroke(); |
| 120 | + |
| 121 | + // Randomly spawn a pulse on this connection |
| 122 | + if (Math.random() < 0.0005) { // Low probability for subtlety |
| 123 | + this.pulses.push({ |
| 124 | + x: p.x, |
| 125 | + y: p.y, |
| 126 | + targetX: p2.x, |
| 127 | + targetY: p2.y, |
| 128 | + progress: 0, |
| 129 | + speed: 0.02 + Math.random() * 0.03 // Random speed |
| 130 | + }); |
| 131 | + } |
| 132 | + } |
| 133 | + } |
| 134 | + } |
| 135 | + |
| 136 | + // Update and draw pulses |
| 137 | + for (let i = this.pulses.length - 1; i >= 0; i--) { |
| 138 | + const pulse = this.pulses[i]; |
| 139 | + pulse.progress += pulse.speed; |
| 140 | + |
| 141 | + if (pulse.progress >= 1) { |
| 142 | + this.pulses.splice(i, 1); // Remove finished pulses |
| 143 | + continue; |
| 144 | + } |
| 145 | + |
| 146 | + const currentX = pulse.x + (pulse.targetX - pulse.x) * pulse.progress; |
| 147 | + const currentY = pulse.y + (pulse.targetY - pulse.y) * pulse.progress; |
| 148 | + |
| 149 | + this.ctx.beginPath(); |
| 150 | + this.ctx.arc(currentX, currentY, 1.5, 0, Math.PI * 2); |
| 151 | + this.ctx.fillStyle = 'rgba(0, 242, 255, 0.8)'; // Bright pulse |
| 152 | + this.ctx.fill(); |
| 153 | + } |
| 154 | + |
| 155 | + requestAnimationFrame(() => this.animate()); |
| 156 | + } |
| 157 | +} |
| 158 | + |
| 159 | +// Initialize when DOM is loaded |
| 160 | +document.addEventListener('DOMContentLoaded', () => { |
| 161 | + new NeuralNetwork(); |
| 162 | +}); |
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