Viewing Program

Program Data

Program thumbnail for "{props.program.title}"

Title	Fluid Simulator
ID	4562292822687744
Created	2 months ago, 1730503071313
Updated	2 months ago, 1730571701836
Code	/** ______ _ _ _ \| ___\| \| (_) \| \| \| \|_ \| \|_ _ _ __\| \| \| _\| \| \| \| \| \| \|/ _` \| \| \| \| \| \|_\| \| \| (_\| \| \_\| \|_\|\__,_\|_\|\__,_\| _____ _ / ___\| (_) \ `--. _ _ __ ___ `--. \ \| \| \| '_ ` _ \ /\__/ / \| \| \| \| \| \| \| \| \____/ \|_\| \|_\| \|_\| \|_\| By Tac, If you Have Suggestions Post In Tips & Thanks /// Variables for liquid simulation var particleCount = 150; // Total number of particles var particleSize = 10; // Radius of particles var particleMass = 1; // Mass of particles var restitution = 0.8; // Bounciness of particles var repulsionStrength = 0.4; // Strength of the repulsion force var Gravity = 0.1; //Strength of gravity var particles = []; // Array to hold particles var gridSize = Math.sqrt(particleCount) \| 0; // Size of the grid (number of particles per row/column) var drawMode = 'density'; // Drawing mode: 'particles' or 'density' var densitySquares = 100; // Number of squares to draw for density visualization var gravityMode = false; // Toggle for gravity mode println("Controls:\nSpace: Draw Mode Toggle\nShift: Gravity Toggle\nArrow Keys: Gravity Direction"); frameRate(25); // Simple Vector Constructor function Vector(x, y) { this.x = x; this.y = y; } var gravityVector = new Vector(0, Gravity); // Gravity direction and strength // Vector methods Vector.prototype.add = function(v) { this.x += v.x; this.y += v.y; }; Vector.prototype.sub = function(v) { return new Vector(this.x - v.x, this.y - v.y); }; Vector.prototype.mult = function(scalar) { return new Vector(this.x scalar, this.y * scalar); }; Vector.prototype.normalize = function() { var length = Math.sqrt(this.x * this.x + this.y * this.y); if (length > 0) { return this.mult(1 / length); } return new Vector(0, 0); }; Vector.prototype.dist = function(v) { return Math.sqrt(Math.pow(this.x - v.x, 2) + Math.pow(this.y - v.y, 2)); }; // Particle constructor function function Particle(x, y) { this.position = new Vector(x, y); // Position of the particle this.velocity = new Vector(0, 0); // Velocity of the particle } // Update the particle's position Particle.prototype.update = function() { if (gravityMode) { this.velocity.add(gravityVector); // Apply gravity to velocity } else { // Random noise affecting the velocity var noiseX = Math.random() * 0.2 - 0.1; // Random noise in x var noiseY = Math.random() * 0.2 - 0.1; // Random noise in y var noiseVector = new Vector(noiseX, noiseY); // Create noise vector this.velocity.add(noiseVector); // Add noise to velocity } // Apply repulsion force for (var j = 0; j < particles.length; j++) { if (particles[j] !== this) { var distance = this.position.dist(particles[j].position); if (distance < particleSize * 4) { // Check if particles are within a certain range var repulsion = this.position.sub(particles[j].position).normalize().mult(repulsionStrength); this.velocity.add(repulsion); // Add repulsion to velocity this.repulsionForce = repulsion; // Store the repulsion force for visualization } } } this.position.add(this.velocity); // Move the particle this.checkBounds(); // Keep the particle within the canvas }; // Check for collisions with another particle Particle.prototype.checkCollision = function(other) { var distance = this.position.dist(other.position); if (distance < particleSize * 2) { // Check if particles overlap var normal = this.position.sub(other.position).normalize(); // Collision normal var relativeVelocity = this.velocity.sub(other.velocity); // Relative velocity // Calculate impulse scalar var velocityAlongNormal = relativeVelocity.x * normal.x + relativeVelocity.y * normal.y; if (velocityAlongNormal > 0) { return; // Only resolve if moving towards each other } // Calculate impulse magnitude var impulse = (-(1 + restitution) * velocityAlongNormal) / (1 / particleMass + 1 / particleMass); var impulseVec = normal.mult(impulse); // Impulse vector // Apply impulse to both particles this.velocity.add(impulseVec.mult(1 / particleMass)); other.velocity.add(impulseVec.mult(-1 / particleMass)); } }; // Keep the particle within the canvas bounds Particle.prototype.checkBounds = function() { if (this.position.x < particleSize) { this.position.x = particleSize; this.velocity.x = -restitution; // Reverse velocity with restitution } if (this.position.x > width - particleSize) { this.position.x = width - particleSize; this.velocity.x = -restitution; } if (this.position.y < particleSize) { this.position.y = particleSize; this.velocity.y = -restitution; } if (this.position.y > height - particleSize) { this.position.y = height - particleSize; this.velocity.y = -restitution; } }; // Display the particle Particle.prototype.display = function() { fill(0, 100, 255, 150); // Color for particles ellipse(this.position.x, this.position.y, particleSize * 2, particleSize * 2); // Draw the particle }; // Setup function function setup() { var startX = 100/(particleSize/10); // Starting x position var startY = 100/(particleSize/10); // Starting y position var offset = particleSize * 2; // Offset based on particle size // Create a grid of particles for (var i = 0; i < gridSize; i++) { for (var j = 0; j < gridSize; j++) { var x = startX + i * offset; // Calculate x position var y = startY + j * offset; // Calculate y position particles.push(new Particle(x, y)); // Create and add particles } } } setup(); // Function to draw density based on particles function drawDensity() { var densityGrid = {}; // To count particles in each square var densitySquaresPerSide = Math.sqrt(densitySquares); // Calculate squares per side // Initialize the density grid with zero for (var i = 0; i < densitySquaresPerSide; i++) { for (var j = 0; j < densitySquaresPerSide; j++) { densityGrid[i + ',' + j] = 0; } } // Count particles in each square for (var i = 0; i < particles.length; i++) { var particle = particles[i]; var gridX = Math.floor((particle.position.x / width) * densitySquaresPerSide); var gridY = Math.floor((particle.position.y / height) * densitySquaresPerSide); if (gridX >= 0 && gridX < densitySquaresPerSide && gridY >= 0 && gridY < densitySquaresPerSide) { densityGrid[gridX + ',' + gridY]++; } } // Draw density squares noStroke(); // Disable stroke for better performance for (var key in densityGrid) { var coords = key.split(','); var gridX = parseInt(coords[0], 10); var gridY = parseInt(coords[1], 10); var density = densityGrid[key]; if (density > 0) { // Only draw if density is non-zero var maxDensity = Math.max.apply(Math, Object.values(densityGrid)); var colorValue = map(density, 0, maxDensity, 100, 255); // Map density to opacity fill(0, 0, 255, colorValue); // Blue color with variable opacity // Draw the rectangle rect( (gridX * width) / densitySquaresPerSide, (gridY * height) / densitySquaresPerSide, width / densitySquaresPerSide, height / densitySquaresPerSide ); } } } // Draw function function draw() { if (drawMode === 'particles') {background(207, 223, 255);} else{fill(15, 155, 255,50);rect(0,0,600,600);} for (var i = 0; i < particles.length; i++) { var particle = particles[i]; // Access the particle particle.update(); // Update particle position if (drawMode === 'particles') { particle.display(); // Display particle } // Check for collisions with other particles for (var j = i + 1; j < particles.length; j++) { particle.checkCollision(particles[j]); // Check collision with other particles } } if (drawMode === 'density') { drawDensity(); // Draw density visualization } } // Toggle the drawing mode and gravity using keyboard input function keyPressed() { if (key.toString() === ' ') { drawMode = (drawMode === 'density') ? 'particles' : 'density'; } else if (keyCode === SHIFT) { gravityMode = !gravityMode; // Toggle gravity mode println("Gravity mode "+gravityMode); } else if (gravityMode) { if (keyCode === UP) { gravityVector = new Vector(0, -Gravity); // Upward gravity } else if (keyCode === DOWN) { gravityVector = new Vector(0, Gravity); // Downward gravity } else if (keyCode === LEFT) { gravityVector = new Vector(-Gravity, 0); // Leftward gravity } else if (keyCode === RIGHT) { gravityVector = new Vector(Gravity, 0); // Rightward gravity } } }
Folds	38,41,44,47,49,51,53,55,57,63,65,67,70,73,76,101,104,124,127,144,153,166,170,214,217,235,238,255
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgLuYmayNCAw
Votes	7
Spin-Offs	0
Type	PJS
Width	600
Height	600
User Flagged	false
Origin Scratchpad	null
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	Tac
Author Name	Tac8
Author ID	kaid_1052156029901560195168404
Author Profile Access	COACH

Archive Data

Added	2 months ago, 1730593568661
Updated	2 months ago, 1730593568661
Source Deleted	unknown