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fractals.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Enhanced IFS Fractal Generator</title>
<style>
/* Existing Styles */
body {
font-family: Arial, sans-serif;
margin: 20px;
display: flex;
flex-direction: column;
height: 100vh;
}
#mainContainer {
display: flex;
flex: 1;
overflow: hidden;
}
#controlsContainer {
width: 350px;
overflow-y: auto;
padding-right: 10px;
box-sizing: border-box;
border-right: 1px solid #ccc;
display: flex;
flex-direction: column;
}
#controls {
display: flex;
flex-direction: column;
flex: 1;
}
.transformation, .probabilities, .colors, .export-options, .save-load, .advanced-insights, .animation-controls {
border: 1px solid #ccc;
border-radius: 5px;
padding: 15px;
margin-bottom: 20px;
box-sizing: border-box;
}
.transformation h3, .probabilities h3, .colors h3, .export-options h3, .save-load h3, .advanced-insights h3, .animation-controls h3 {
margin-top: 0;
font-size: 16px;
}
.slider-group {
display: flex;
align-items: center;
margin-bottom: 10px;
flex-wrap: wrap;
}
.slider-group label {
flex: 1 0 60px;
font-size: 14px;
margin-right: 10px;
cursor: pointer;
user-select: none;
}
.slider-group input[type="range"], .slider-group input[type="color"] {
flex: 3 0 180px;
margin-right: 10px;
}
#canvasContainer {
flex: 1;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
position: relative;
background-color: black;
overflow: hidden; /* Ensure panning doesn't overflow */
}
#fractalCanvas {
background-color: black;
}
canvas {
border: 1px solid #000;
cursor: grab; /* Indicate draggable area */
max-width: 100%;
max-height: 100%;
touch-action: none; /* Disable default touch actions for better gesture handling */
}
#zoomControls {
position: absolute; /* Position within canvas container */
top: 10px;
right: 10px;
display: flex;
flex-direction: column;
gap: 10px;
}
#zoomControls button, #exportBtn, #saveConfigBtn, #loadConfigBtn, #animateBtn, #stopAnimateBtn {
padding: 10px 20px;
font-size: 16px;
cursor: pointer;
user-select: none;
border: none;
border-radius: 5px;
background-color: #007BFF;
color: #fff;
}
#zoomControls button:hover, #exportBtn:hover, #saveConfigBtn:hover, #loadConfigBtn:hover, #animateBtn:hover, #stopAnimateBtn:hover {
background-color: #0056b3;
}
#exampleSelect {
margin-bottom: 20px;
}
/* Add/Remove Buttons */
#transformationButtons {
display: flex;
justify-content: space-between;
margin-bottom: 20px;
}
#transformationButtons button {
padding: 10px;
font-size: 14px;
cursor: pointer;
user-select: none;
flex: 1;
margin: 0 5px;
border: none;
border-radius: 5px;
background-color: #28a745;
color: #fff;
}
#removeTransformation {
background-color: #dc3545;
}
#transformationButtons button:hover {
opacity: 0.9;
}
/* Remove button disabled state */
#transformationButtons button:disabled {
background-color: #e0e0e0;
cursor: not-allowed;
color: #666;
}
/* Scrollbar styling for controls */
#controlsContainer::-webkit-scrollbar {
width: 8px;
}
#controlsContainer::-webkit-scrollbar-thumb {
background-color: rgba(0,0,0,0.2);
border-radius: 4px;
}
#controlsContainer::-webkit-scrollbar-track {
background-color: rgba(0,0,0,0.05);
}
/* Responsive Design */
@media (max-width: 1200px) {
#mainContainer {
flex-direction: column;
}
#controlsContainer {
width: 100%;
border-right: none;
border-bottom: 1px solid #ccc;
padding-right: 0;
padding-bottom: 10px;
}
.transformation, .probabilities, .colors, .export-options, .save-load, .advanced-insights, .animation-controls {
width: 100%;
}
.slider-group label, .slider-group input[type="range"], .slider-group input[type="color"] {
flex: 1 0 100%;
margin-right: 0;
}
.slider-group input[type="range"], .slider-group input[type="color"] {
margin-top: 5px;
}
#transformationButtons {
flex-direction: column;
}
#transformationButtons button {
margin: 5px 0;
}
#zoomControls {
top: 10px;
right: 10px;
flex-direction: row;
}
#zoomControls button {
padding: 5px 10px;
font-size: 14px;
}
}
</style>
</head>
<body>
<h1>Enhanced IFS Fractal Generator</h1>
<div id="exampleSelect">
<label for="examples">Choose an Example:</label>
<select id="examples">
<option value="line" selected>Simple Line</option>
<option value="sierpinski">Sierpinski Triangle</option>
<option value="barnsley">Barnsley Fern</option>
<option value="koch">Koch Snowflake</option>
<!-- Additional Preset Examples can be added here -->
</select>
</div>
<div id="mainContainer">
<div id="controlsContainer">
<div id="transformationButtons">
<button id="addTransformation">Add Transformation</button>
<button id="removeTransformation">Remove Transformation</button>
</div>
<div id="controls">
<!-- Transformation Sliders will be dynamically inserted here -->
<div class="transformation" id="transformation_0">
<h3>Transformation 1</h3>
<div class="slider-group">
<label for="trans0_a">a: 0.420</label>
<input type="range" min="-2" max="2" step="0.01" id="trans0_a">
</div>
<div class="slider-group">
<label for="trans0_b">b: -0.199</label>
<input type="range" min="-2" max="2" step="0.01" id="trans0_b">
</div>
<div class="slider-group">
<label for="trans0_c">c: 0.000</label>
<input type="range" min="-2" max="2" step="0.01" id="trans0_c">
</div>
<div class="slider-group">
<label for="trans0_d">d: 0.730</label>
<input type="range" min="-2" max="2" step="0.01" id="trans0_d">
</div>
<div class="slider-group">
<label for="trans0_e">e: 0.980</label>
<input type="range" min="-2" max="2" step="0.01" id="trans0_e">
</div>
<div class="slider-group">
<label for="trans0_f">f: 0.000</label>
<input type="range" min="-2" max="2" step="0.01" id="trans0_f">
</div>
</div>
<div class="transformation" id="transformation_1">
<h3>Transformation 2</h3>
<div class="slider-group">
<label for="trans1_a">a: 0.750</label>
<input type="range" min="-2" max="2" step="0.01" id="trans1_a">
</div>
<div class="slider-group">
<label for="trans1_b">b: -0.389</label>
<input type="range" min="-2" max="2" step="0.01" id="trans1_b">
</div>
<div class="slider-group">
<label for="trans1_c">c: 0.500</label>
<input type="range" min="-2" max="2" step="0.01" id="trans1_c">
</div>
<div class="slider-group">
<label for="trans1_d">d: 0.389</label>
<input type="range" min="-2" max="2" step="0.01" id="trans1_d">
</div>
<div class="slider-group">
<label for="trans1_e">e: 0.921</label>
<input type="range" min="-2" max="2" step="0.01" id="trans1_e">
</div>
<div class="slider-group">
<label for="trans1_f">f: 0.500</label>
<input type="range" min="-2" max="2" step="0.01" id="trans1_f">
</div>
</div>
<div class="transformation" id="transformation_2">
<h3>Transformation 3</h3>
<div class="slider-group">
<label for="trans2_a">a: 0.825</label>
<input type="range" min="-2" max="2" step="0.01" id="trans2_a">
</div>
<div class="slider-group">
<label for="trans2_b">b: -0.565</label>
<input type="range" min="-2" max="2" step="0.01" id="trans2_b">
</div>
<div class="slider-group">
<label for="trans2_c">c: 0.250</label>
<input type="range" min="-2" max="2" step="0.01" id="trans2_c">
</div>
<div class="slider-group">
<label for="trans2_d">d: 2.000</label>
<input type="range" min="-2" max="2" step="0.01" id="trans2_d">
</div>
<div class="slider-group">
<label for="trans2_e">e: 0.825</label>
<input type="range" min="-2" max="2" step="0.01" id="trans2_e">
</div>
<div class="slider-group">
<label for="trans2_f">f: 0.500</label>
<input type="range" min="-2" max="2" step="0.01" id="trans2_f">
</div>
</div>
<div class="probabilities" id="probabilities">
<h3>Probabilities</h3>
<div class="slider-group">
<label for="prob_0">P1: 0.33</label>
<input type="range" min="0" max="1" step="0.01" id="prob_0">
</div>
<div class="slider-group">
<label for="prob_1">P2: 0.33</label>
<input type="range" min="0" max="1" step="0.01" id="prob_1">
</div>
<div class="slider-group">
<label for="prob_2">P3: 0.34</label>
<input type="range" min="0" max="1" step="0.01" id="prob_2">
</div>
</div>
<!-- New Features -->
<div class="colors" id="colors">
<h3>Color Customization</h3>
<!-- Color pickers will be dynamically inserted here -->
</div>
<div class="export-options" id="exportOptions">
<h3>Export Options</h3>
<button id="exportBtn">Download Fractal as PNG</button>
</div>
<div class="save-load" id="saveLoad">
<h3>Save/Load Configuration</h3>
<button id="saveConfigBtn">Save Configuration</button>
<button id="loadConfigBtn">Load Configuration</button>
<input type="file" id="loadConfigInput" accept=".json" style="display:none;">
</div>
<div class="animation-controls" id="animationControls">
<h3>Animation Controls</h3>
<button id="animateBtn">Start Animation</button>
<button id="stopAnimateBtn" disabled>Stop Animation</button>
</div>
<div class="advanced-insights" id="advancedInsights">
<h3>Advanced Insights</h3>
<p>Fractal Points: <span id="pointCount">0</span></p>
<p>Fractal Dimensions: <span id="fractalDimension">Calculating...</span></p>
</div>
</div>
</div>
<div id="canvasContainer">
<canvas id="fractalCanvas" width="1920" height="1080"></canvas>
<div id="zoomControls">
<button id="zoomIn">+</button>
<button id="zoomOut">-</button>
</div>
</div>
</div>
<script>
// Utilize Web Workers for Performance Enhancements
// Define the worker script as a Blob
const workerScript = `
self.onmessage = function(e) {
const { initialPoints, transformations, probabilities, iterations } = e.data;
let points = initialPoints.slice();
const allPoints = [];
const transformationIndices = [];
for (let i = 0; i < iterations; i++) {
const newPoints = [];
const newIndices = [];
points.forEach(point => {
const idx = weightedRandom(probabilities);
const trans = transformations[idx];
const x = trans.a * point[0] + trans.b * point[1] + trans.c;
const y = trans.d * point[0] + trans.e * point[1] + trans.f;
newPoints.push([x, y]);
newIndices.push(idx);
});
points = newPoints;
allPoints.push(...points);
transformationIndices.push(...newIndices);
if (i % 1000 === 0) {
self.postMessage({ partialPoints: allPoints.length });
}
}
self.postMessage({ points: allPoints, indices: transformationIndices });
};
function weightedRandom(weights) {
const r = Math.random();
let cumulative = 0;
for (let i = 0; i < weights.length; i++) {
cumulative += weights[i];
if (r < cumulative) {
return i;
}
}
return weights.length - 1;
}
`;
const blob = new Blob([workerScript], { type: 'application/javascript' });
const worker = new Worker(URL.createObjectURL(blob));
// Define examples with additional presets
const examples = {
sierpinski: {
transformations: [
{ a: 0.5, b: 0, c: 0, d: 0, e: 0.5, f: 0 },
{ a: 0.5, b: 0, c: 0.5, d: 0, e: 0.5, f: 0 },
{ a: 0.5, b: 0, c: 0.25, d: 0, e: 0.5, f: 0.433 } // 0.433 ≈ sqrt(3)/2
],
probabilities: [1/3, 1/3, 1/3],
colors: ['#FF0000', '#00FF00', '#0000FF']
},
barnsley: {
transformations: [
{ a: 0, b: 0, c: 0, d: 0.16, e: 0, f: 0 },
{ a: 0.85, b: 0.04, c: 0, d: -0.04, e: 0.85, f: 1.6 },
{ a: 0.2, b: -0.26, c: 0, d: 0.23, e: 0.22, f: 1.6 },
{ a: -0.15, b: 0.28, c: 0, d: 0.26, e: 0.24, f: 0.44 }
],
probabilities: [0.01, 0.85, 0.07, 0.07],
colors: ['#228B22', '#32CD32', '#006400', '#008000']
},
line: {
transformations: [
{
a: Math.cos(0.2),
b: -Math.sin(0.2),
c: 0,
d: Math.sin(0.2),
e: Math.cos(0.2),
f: 0
},
{
a: Math.cos(0.4),
b: -Math.sin(0.4),
c: 0.5,
d: Math.sin(0.4),
e: Math.cos(0.4),
f: 0.5
},
{
a: Math.cos(0.6),
b: -Math.sin(0.6),
c: 0.25,
d: Math.sin(0.6),
e: Math.cos(0.6),
f: 0.5
}
],
probabilities: [0.33, 0.33, 0.34],
colors: ['#FF69B4', '#8A2BE2', '#00CED1']
},
koch: { // Example for Koch Snowflake
transformations: [
{ a: 1/3, b: 0, c: 0, d: 0, e: 1/3, f: 0 },
{ a: 0.5, b: -Math.sqrt(3)/6, c: 1/3, d: Math.sqrt(3)/6, e: 0.5, f: 0 },
{ a: 0.5, b: Math.sqrt(3)/6, c: 2/3, d: -Math.sqrt(3)/6, e: 0.5, f: 0 },
{ a: 1/3, b: 0, c: 2/3, d: 0, e: 1/3, f: 0 }
],
probabilities: [0.25, 0.25, 0.25, 0.25],
colors: ['#FF4500', '#FFD700', '#ADFF2F', '#00BFFF']
}
// Note: Mandelbrot Set is not an IFS fractal and requires a different algorithm
};
const canvas = document.getElementById('fractalCanvas');
const ctx = canvas.getContext('2d');
const controlsDiv = document.getElementById('controls');
const examplesSelect = document.getElementById('examples');
const zoomInBtn = document.getElementById('zoomIn');
const zoomOutBtn = document.getElementById('zoomOut');
const addTransBtn = document.getElementById('addTransformation');
const removeTransBtn = document.getElementById('removeTransformation');
const colorsDiv = document.getElementById('colors');
const exportBtn = document.getElementById('exportBtn');
const saveConfigBtn = document.getElementById('saveConfigBtn');
const loadConfigBtn = document.getElementById('loadConfigBtn');
const loadConfigInput = document.getElementById('loadConfigInput');
const animateBtn = document.getElementById('animateBtn');
const stopAnimateBtn = document.getElementById('stopAnimateBtn');
const pointCountSpan = document.getElementById('pointCount');
const fractalDimensionSpan = document.getElementById('fractalDimension');
let currentExample = 'line'; // Default to Simple Line
let transformations = JSON.parse(JSON.stringify(examples[currentExample].transformations));
let probabilities = examples[currentExample].probabilities.slice();
let colors = examples[currentExample].colors.slice() || ['#000000'];
let scale = 100; // Initial scale
let isAnimating = false;
let animationInterval;
// Pan variables
let isPanning = false;
let startX = 0;
let startY = 0;
let translateX = 0;
let translateY = 0;
// Initialize Web Worker Communication
let fractalPoints = [];
let pointIndices = []; // To track which transformation generated each point
worker.onmessage = function(e) {
if (e.data.partialPoints !== undefined) {
pointCountSpan.textContent = e.data.partialPoints;
}
if (e.data.points && e.data.indices) {
fractalPoints = e.data.points;
pointIndices = e.data.indices;
plotPoints(fractalPoints, pointIndices);
pointCountSpan.textContent = fractalPoints.length;
calculateFractalDimension();
}
};
// Update Remove Button State
function updateRemoveButtonState() {
if (transformations.length <= 1) {
removeTransBtn.disabled = true;
} else {
removeTransBtn.disabled = false;
}
}
// Initialize UI
function initUI() {
// Clear existing transformations in the controls
const existingTransformations = controlsDiv.querySelectorAll('.transformation');
existingTransformations.forEach(transDiv => transDiv.remove());
// Transformation Sliders
transformations.forEach((trans, index) => {
const transDiv = document.createElement('div');
transDiv.className = 'transformation';
transDiv.id = `transformation_${index}`;
transDiv.innerHTML = `<h3>Transformation ${index + 1}</h3>`;
['a', 'b', 'c', 'd', 'e', 'f'].forEach((param) => {
const sliderGroup = document.createElement('div');
sliderGroup.className = 'slider-group';
const label = document.createElement('label');
label.htmlFor = `trans${index}_${param}`;
label.textContent = `${param}: ${trans[param].toFixed(3)}`;
const slider = document.createElement('input');
slider.type = 'range';
if (param === 'c' || param === 'f') {
slider.min = -2;
slider.max = 2;
slider.step = 0.01;
} else {
slider.min = -2;
slider.max = 2;
slider.step = 0.01;
}
slider.value = trans[param];
slider.id = `trans${index}_${param}`;
slider.oninput = function() {
transformations[index][param] = parseFloat(this.value);
label.textContent = `${param}: ${transformations[index][param].toFixed(3)}`;
generateAndPlot();
};
sliderGroup.appendChild(label);
sliderGroup.appendChild(slider);
transDiv.appendChild(sliderGroup);
});
controlsDiv.insertBefore(transDiv, document.getElementById('probabilities'));
});
// Probability sliders
renderProbabilities();
// Color Customization
renderColorPickers();
updateRemoveButtonState();
}
// Render Probability Sliders
function renderProbabilities() {
let probDiv = document.getElementById('probabilities');
if (!probDiv) {
// Create probabilities div if it doesn't exist
probDiv = document.createElement('div');
probDiv.className = 'probabilities';
probDiv.id = 'probabilities';
probDiv.innerHTML = `<h3>Probabilities</h3>`;
controlsDiv.appendChild(probDiv);
} else {
probDiv.innerHTML = `<h3>Probabilities</h3>`; // Reset content
}
probabilities.forEach((prob, index) => {
const sliderGroup = document.createElement('div');
sliderGroup.className = 'slider-group';
const label = document.createElement('label');
label.htmlFor = `prob_${index}`;
label.textContent = `P${index + 1}: ${prob.toFixed(2)}`;
const slider = document.createElement('input');
slider.type = 'range';
slider.min = 0;
slider.max = 1;
slider.step = 0.01;
slider.value = prob;
slider.id = `prob_${index}`;
slider.oninput = function() {
probabilities[index] = parseFloat(this.value);
updateProbabilities(index);
generateAndPlot();
};
sliderGroup.appendChild(label);
sliderGroup.appendChild(slider);
probDiv.appendChild(sliderGroup);
});
}
// Render Color Pickers
function renderColorPickers() {
colorsDiv.innerHTML = `<h3>Color Customization</h3>`;
transformations.forEach((trans, index) => {
const colorGroup = document.createElement('div');
colorGroup.className = 'slider-group';
const label = document.createElement('label');
label.htmlFor = `color_${index}`;
label.textContent = `C${index + 1}:`;
const colorPicker = document.createElement('input');
colorPicker.type = 'color';
colorPicker.value = colors[index] || '#000000';
colorPicker.id = `color_${index}`;
colorPicker.oninput = function() {
colors[index] = this.value;
plotPoints(fractalPoints, pointIndices); // Re-plot with new colors
};
colorGroup.appendChild(label);
colorGroup.appendChild(colorPicker);
colorsDiv.appendChild(colorGroup);
});
}
// Update Probabilities and Normalize
function updateProbabilities(changedIndex) {
const total = probabilities.reduce((a, b) => a + b, 0);
if (total === 0) {
// Prevent division by zero
probabilities = probabilities.map((_, i) => i === changedIndex ? 1 : 0);
} else {
probabilities = probabilities.map(p => p / total);
}
// Update all probability sliders
probabilities.forEach((p, i) => {
const probSlider = document.getElementById(`prob_${i}`);
const probLabel = probSlider.previousSibling;
probSlider.value = p;
probLabel.textContent = `P${i + 1}: ${p.toFixed(2)}`;
});
}
// Apply IFS using Web Worker
function applyIFS(initialPoints, transformations, probabilities, iterations) {
worker.postMessage({ initialPoints, transformations, probabilities, iterations });
}
// Plot points on canvas with color customization
function plotPoints(points, indices) {
ctx.clearRect(0, 0, canvas.width, canvas.height);
const imgData = ctx.createImageData(canvas.width, canvas.height);
const data = imgData.data;
points.forEach((point, i) => {
const x = Math.round(canvas.width / 2 + (point[0] + translateX) * scale);
const y = Math.round(canvas.height / 2 + (point[1] + translateY) * scale);
if (x >= 0 && x < canvas.width && y >= 0 && y < canvas.height) {
const index = (y * canvas.width + x) * 4;
const color = hexToRgb(colors[indices[i]] || '#000000');
data[index] = color.r;
data[index + 1] = color.g;
data[index + 2] = color.b;
data[index + 3] = 255; // Fully opaque
}
});
ctx.putImageData(imgData, 0, 0);
}
// Convert HEX color to RGB
function hexToRgb(hex) {
const bigint = parseInt(hex.slice(1), 16);
const r = (bigint >> 16) & 255;
const g = (bigint >> 8) & 255;
const b = bigint & 255;
return { r, g, b };
}
// Generate and plot using Web Worker
function generateAndPlot() {
fractalDimensionSpan.textContent = 'Calculating...';
applyIFS([[0, 0]], transformations, probabilities, 120000);
}
// Handle example selection
examplesSelect.onchange = function() {
currentExample = this.value;
const selected = examples[currentExample];
transformations = JSON.parse(JSON.stringify(selected.transformations));
probabilities = selected.probabilities.slice();
colors = selected.colors ? selected.colors.slice() : ['#000000'];
scale = 100; // Reset scale
translateX = 0; // Reset translation
translateY = 0;
initUI();
generateAndPlot();
};
// Zoom Controls
zoomInBtn.onclick = function() {
scale *= 1.2;
plotPoints(fractalPoints, pointIndices);
};
zoomOutBtn.onclick = function() {
scale /= 1.2;
plotPoints(fractalPoints, pointIndices);
};
// Add Transformation
addTransBtn.onclick = function() {
// Define default transformation (identity with no translation)
const newTrans = { a: 1, b: 0, c: 0, d: 0, e: 1, f: 0 };
transformations.push(newTrans);
probabilities.push(1 / transformations.length);
// Normalize probabilities
probabilities = probabilities.map(p => p / transformations.length);
colors.push('#000000'); // Default color for new transformation
// Re-render probability sliders
renderProbabilities();
// Create sliders for the new transformation
const index = transformations.length - 1;
const transDiv = document.createElement('div');
transDiv.className = 'transformation';
transDiv.id = `transformation_${index}`;
transDiv.innerHTML = `<h3>Transformation ${index + 1}</h3>`;
['a', 'b', 'c', 'd', 'e', 'f'].forEach((param) => {
const sliderGroup = document.createElement('div');
sliderGroup.className = 'slider-group';
const label = document.createElement('label');
label.htmlFor = `trans${index}_${param}`;
label.textContent = `${param}: ${transformations[index][param].toFixed(3)}`;
const slider = document.createElement('input');
slider.type = 'range';
if (param === 'c' || param === 'f') {
slider.min = -2;
slider.max = 2;
slider.step = 0.01;
} else {
slider.min = -2;
slider.max = 2;
slider.step = 0.01;
}
slider.value = transformations[index][param];
slider.id = `trans${index}_${param}`;
slider.oninput = function() {
transformations[index][param] = parseFloat(this.value);
label.textContent = `${param}: ${transformations[index][param].toFixed(3)}`;
generateAndPlot();
};
sliderGroup.appendChild(label);
sliderGroup.appendChild(slider);
transDiv.appendChild(sliderGroup);
});
controlsDiv.insertBefore(transDiv, document.getElementById('probabilities'));
renderColorPickers();
generateAndPlot();
updateRemoveButtonState();
};
// Remove Transformation
removeTransBtn.onclick = function() {
if (transformations.length <= 1) return; // Ensure at least one transformation remains
// Remove last transformation
transformations.pop();
probabilities.pop();
colors.pop();
// Normalize probabilities
const total = probabilities.reduce((a, b) => a + b, 0);
if (total > 0) {
probabilities = probabilities.map(p => p / total);
}
// Remove sliders from UI
const index = transformations.length;
const transDiv = document.getElementById(`transformation_${index}`);
if (transDiv) {
controlsDiv.removeChild(transDiv);
}
// Re-render probability sliders and color pickers
renderProbabilities();
renderColorPickers();
generateAndPlot();
updateRemoveButtonState();
};
// Export Fractal as PNG
exportBtn.onclick = function() {
const link = document.createElement('a');
link.download = 'fractal.png';
link.href = canvas.toDataURL();
link.click();
};
// Save Configuration
saveConfigBtn.onclick = function() {
const config = {
transformations,
probabilities,
colors,
scale,
translateX,
translateY
};
const dataStr = "data:text/json;charset=utf-8," + encodeURIComponent(JSON.stringify(config));
const downloadAnchorNode = document.createElement('a');
downloadAnchorNode.setAttribute("href", dataStr);
downloadAnchorNode.setAttribute("download", "fractal_config.json");
document.body.appendChild(downloadAnchorNode);
downloadAnchorNode.click();
downloadAnchorNode.remove();
};
// Load Configuration
loadConfigBtn.onclick = function() {
loadConfigInput.click();
};
loadConfigInput.onchange = function(event) {
const file = event.target.files[0];
if (!file) return;
const reader = new FileReader();
reader.onload = function(e) {
try {
const config = JSON.parse(e.target.result);
if (config.transformations && config.probabilities && config.colors) {
transformations = JSON.parse(JSON.stringify(config.transformations));
probabilities = config.probabilities.slice();
colors = config.colors.slice();
scale = config.scale || 100;
translateX = config.translateX || 0;
translateY = config.translateY || 0;
initUI();
generateAndPlot();
} else {
alert('Invalid configuration file.');
}
} catch (error) {
alert('Error loading configuration.');
}
};
reader.readAsText(file);
};
// Animation Controls (Placeholder Implementation)
animateBtn.onclick = function() {
if (isAnimating) return;
isAnimating = true;
animateBtn.disabled = true;
stopAnimateBtn.disabled = false;
let currentIteration = 0;
const totalIterations = 10000;
const pointsPerBatch = 1000;
fractalPoints = [];
pointIndices = [];
ctx.clearRect(0, 0, canvas.width, canvas.height);
pointCountSpan.textContent = '0';
fractalDimensionSpan.textContent = 'Calculating...';
// Since the Web Worker handles the entire generation, animation would require modifying the worker to send batches
// For simplicity, we'll skip implementing animation with the current worker setup
alert('Animation feature is not fully implemented yet.');
};
stopAnimateBtn.onclick = function() {
if (!isAnimating) return;
// Implement stopping the animation if it were running
isAnimating = false;
animateBtn.disabled = false;
stopAnimateBtn.disabled = true;
// No action needed as animation is not implemented
};
// Advanced Insights: Calculate Fractal Dimension (Placeholder)
function calculateFractalDimension() {
// Implementing fractal dimension calculation is complex
// Placeholder for demonstration purposes
fractalDimensionSpan.textContent = 'N/A';
}
// Initialize Panning Functionality
function initPanning() {
canvas.addEventListener('mousedown', function(e) {
if (e.button === 1 || (e.button === 0 && e.ctrlKey)) { // Middle mouse button or Ctrl + left click
isPanning = true;
startX = e.clientX - translateX;
startY = e.clientY - translateY;
canvas.style.cursor = 'grabbing';
}
});
canvas.addEventListener('mousemove', function(e) {
if (isPanning) {
translateX = e.clientX - startX;
translateY = e.clientY - startY;
plotPoints(fractalPoints, pointIndices);
}
});
canvas.addEventListener('mouseup', function(e) {
if (isPanning) {
isPanning = false;
canvas.style.cursor = 'grab';
}
});
canvas.addEventListener('mouseleave', function(e) {
if (isPanning) {
isPanning = false;
canvas.style.cursor = 'grab';
}
});
// Prevent context menu on middle click
canvas.addEventListener('contextmenu', function(e) {
e.preventDefault();
});
// Touch Support for Panning
let touchStartX = 0;
let touchStartY = 0;
canvas.addEventListener('touchstart', function(e) {
if (e.touches.length === 1) {
isPanning = true;
touchStartX = e.touches[0].clientX - translateX;
touchStartY = e.touches[0].clientY - translateY;
}
});
canvas.addEventListener('touchmove', function(e) {
if (isPanning && e.touches.length === 1) {
translateX = e.touches[0].clientX - touchStartX;
translateY = e.touches[0].clientY - touchStartY;
plotPoints(fractalPoints, pointIndices);
}
});
canvas.addEventListener('touchend', function(e) {
if (isPanning) {
isPanning = false;
}
});
}
// Initialize
initUI();
generateAndPlot();
initPanning();
</script>
</body>
</html>