app.py

import streamlit as st

def create_animation_app():
    st.title("Animated Spiral Creature")
    
    # JavaScript code for the animation
    js_code = """
    <canvas id="animationCanvas"></canvas>
    
    <script>
    const canvas = document.getElementById('animationCanvas');
    const ctx = canvas.getContext('2d');
    
    // Set canvas size
    canvas.width = 3840;
    canvas.height = 2160;
    
    let t = 0;
    
    function mag(x, y) {
        return Math.sqrt(x * x + y * y);
    }
    
    function a(x, y) {
        const k = x/8 - 25;
        const e = y/8 - 25;
        const d = mag(k, e)**2 / 99;
        
        const q = x/3 + k * 0.5 / Math.cos(y*5) * Math.sin(d*d - t);
        const c = d/2 - t/8;
        
        const xPos = q * Math.sin(c) + e * Math.sin(d + k - t) + 200;
        const yPos = (q + y/8 + d*9) * Math.cos(c) + 200;
        
        return [xPos, yPos];
    }
    
    function getColor(x, y, t) {
        // Create shifting colors based on position and time
        const hue = (Math.sin(t/2) * 360 + x/3 + y/3) % 360;
        const saturation = 70 + Math.sin(t) * 30;
        const lightness = 50 + Math.cos(t/2) * 20;
        return `hsla(${hue}, ${saturation}%, ${lightness}%, 0.5)`;
    }
    
    function draw() {
        // Clear canvas with a fade effect
        ctx.fillStyle = 'rgba(0, 0, 0, 0.1)';
        ctx.fillRect(0, 0, canvas.width, canvas.height);
        
        ctx.lineWidth = 1.5;
        
        for(let y = 99; y < 300; y += 4) {
            for(let x = 99; x < 300; x += 2) {
                const [px, py] = a(x, y);
                const color = getColor(x, y, t);
                
                ctx.strokeStyle = color;
                ctx.beginPath();
                ctx.moveTo(px, py);
                ctx.lineTo(px + 1, py + 1);  // Make points slightly larger
                ctx.stroke();
            }
        }
        
        t += Math.PI / 120;  // Slowed down the animation slightly
        requestAnimationFrame(draw);
    }
    
    // Ensure canvas is cleared on start
    ctx.fillStyle = 'black';
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    
    // Start the animation
    draw();
    </script>
    """
    
    # CSS to center the canvas and ensure proper display
    css = """
    <style>
        canvas {
            display: block;
            margin: auto;
            background: black;
        }
        .stApp {
            background-color: black;
        }
    </style>
    """
    
    # Combine CSS and JavaScript
    html_content = css + js_code
    
    # Display using st.components.v1.html
    st.components.v1.html(html_content, height=2160)

if __name__ == "__main__":
    create_animation_app()