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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">
<meta name="description" content="FlowForge is a free, web-based flow map painting app. Create dynamic flow maps for video games, VFX, and shaders directly in your browser.">
<meta name="google-site-verification" content="kPotiF9SyUuM9vTOuInOHraIKV4mzbdTst969C8tBxc" />
<meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Expires" content="0">
<title>FlowForge | Web-Based Flow Map Painter for Game Dev</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
@supports (scrollbar-width: thin) {
* {
scrollbar-width: thin;
scrollbar-color: var(--bg-tertiary) transparent;
}
}
:root {
--bg-primary: #0a0a0a;
--bg-secondary: #1a1a1a;
--bg-tertiary: #252525;
--bg-hover: #2a2a2a;
--text-primary: #e0e0e0;
--text-secondary: #a0a0a0;
--accent: #ff6b35;
--accent-hover: #e55a2b;
--border: #333;
--success: #4caf50;
--warning: #ff9800;
--error: #f44336;
}
/* Custom Scrollbar */
::-webkit-scrollbar {
width: 10px;
height: 10px;
}
::-webkit-scrollbar-track {
background: transparent;
}
::-webkit-scrollbar-thumb {
background-color: var(--bg-tertiary);
border-radius: 5px;
border: 2px solid transparent;
background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover {
background-color: var(--border);
}
::-webkit-scrollbar-corner {
background: transparent;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
background: var(--bg-primary);
color: var(--text-primary);
overflow: hidden;
height: 100vh;
height: 100dvh;
display: flex;
flex-direction: column;
}
/* Header */
.header {
background: var(--bg-secondary);
border-bottom: 1px solid var(--border);
padding: 0.5rem 1rem;
display: flex;
align-items: center;
justify-content: space-between;
height: 48px;
flex-shrink: 0;
}
.header-left {
display: flex;
align-items: center;
gap: 2rem;
}
.logo {
display: flex;
align-items: center;
gap: 0.5rem;
font-weight: 600;
font-size: 1.1rem;
}
.logo-icon {
width: 24px;
height: 24px;
background: linear-gradient(135deg, var(--accent), #e55a2b);
border-radius: 4px;
display: flex;
align-items: center;
justify-content: center;
color: white;
font-weight: bold;
}
.header-controls {
display: flex;
gap: 0.5rem;
}
/* Main Layout */
.main-container {
display: flex;
flex: 1;
overflow: hidden;
}
/* Toolbar */
.toolbar {
background: var(--bg-secondary);
border-right: 1px solid var(--border);
padding: 1rem 0.5rem;
width: 60px;
display: flex;
flex-direction: column;
gap: 0.5rem;
}
.tool-btn {
width: 48px;
height: 48px;
background: var(--bg-tertiary);
border: 1px solid var(--border);
border-radius: 8px;
color: var(--text-primary);
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
transition: all 0.2s;
position: relative;
}
.tool-btn:hover {
background: var(--bg-hover);
border-color: var(--accent);
}
.tool-btn.active {
background: var(--accent);
color: var(--text-primary);
border-color: var(--accent);
}
.tool-btn svg {
width: 24px;
height: 24px;
}
.tooltip {
position: absolute;
left: 60px;
background: var(--bg-tertiary);
padding: 0.5rem 0.75rem;
border-radius: 4px;
white-space: nowrap;
font-size: 0.875rem;
pointer-events: none;
opacity: 0;
transition: opacity 0.2s;
z-index: 1000;
border: 1px solid var(--border);
}
.tool-btn:hover .tooltip {
opacity: 1;
}
/* Canvas Area */
.canvas-container {
flex: 1;
background: var(--bg-primary);
position: relative;
overflow: hidden;
display: flex;
align-items: center;
justify-content: center;
min-width: 250px;
min-height: 250px;
}
.canvas-wrapper {
position: relative;
/*
background: repeating-conic-gradient(#1a1a1a 0% 25%, #0f0f0f 0% 50%) 50% / 20px 20px;
*/
}
#flowCanvas {
display: block;
cursor: none;
width: 100%;
height: 100%;
touch-action: none;
}
#previewCanvas {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
pointer-events: none;
display: none;
z-index: 500;
}
#brushCursor {
position: absolute;
border: 2px solid rgba(255, 107, 53, 0.8);
border-radius: 50%;
pointer-events: none;
z-index: 1000;
display: none;
box-shadow: 0 0 10px rgba(255, 107, 53, 0.5);
top: 0;
left: 0;
will-change: transform;
}
/* Right Sidebar */
.right-sidebar {
display: flex;
flex-direction: column;
background: var(--bg-secondary);
border-left: 1px solid var(--border);
}
/* Properties Panel */
.properties-panel {
width: 100%;
display: flex;
flex-direction: column;
overflow: hidden;
flex: 0 0 auto;
min-height: 0;
}
.panel-header {
padding: 1rem;
border-bottom: 1px solid var(--border);
font-weight: 600;
display: flex;
align-items: center;
justify-content: space-between;
cursor: pointer;
-webkit-user-select: none;
user-select: none;
transition: background-color 0.2s;
}
.panel-header:hover {
background: var(--bg-hover);
}
.panel-toggle-icon {
transition: transform 0.2s;
margin-right: 0.5rem;
}
.panel-collapsed .panel-toggle-icon {
transform: rotate(-90deg);
}
.panel-collapsed .panel-content,
.panel-collapsed .layers-list {
display: none !important;
}
.panel-collapsed {
flex: 0 0 auto !important;
min-height: 0 !important;
}
.panel-content {
flex: 1;
overflow-y: auto;
padding: 1rem;
}
.property-group {
margin-bottom: 1.5rem;
}
.property-label {
font-size: 0.875rem;
color: var(--text-secondary);
margin-bottom: 0.5rem;
display: block;
}
.property-control {
display: flex;
align-items: center;
gap: 0.5rem;
}
input[type="range"] {
flex: 1;
height: 4px;
background: var(--bg-tertiary);
outline: none;
border-radius: 2px;
-webkit-appearance: none;
min-width: 0;
}
input[type="range"]::-webkit-slider-thumb {
-webkit-appearance: none;
width: 16px;
height: 16px;
background: var(--accent);
border-radius: 50%;
cursor: pointer;
transition: all 0.2s;
}
input[type="range"]::-webkit-slider-thumb:hover {
transform: scale(1.2);
box-shadow: 0 0 8px rgba(255, 107, 53, 0.5);
}
input[type="text"], input[type="number"], select {
background: var(--bg-tertiary);
border: 1px solid var(--border);
color: var(--text-primary);
padding: 0.5rem;
border-radius: 4px;
width: 100%;
transition: border-color 0.2s;
}
input[type="text"]:focus, input[type="number"]:focus, select:focus {
border-color: var(--accent);
outline: none;
}
.value-display {
min-width: 48px;
text-align: right;
font-size: 0.875rem;
color: var(--accent);
}
/* Canvas Panel */
.canvas-panel {
width: 100%;
background: var(--bg-secondary);
border-top: 1px solid var(--border);
border-bottom: 1px solid var(--border);
flex: 0 0 auto;
}
/* Layers Panel */
.layers-panel {
width: 100%;
display: flex;
flex-direction: column;
flex: 1;
min-height: 0;
}
.layers-list {
flex: 1;
overflow-y: auto;
padding: 0.5rem;
}
.layer-item {
background: var(--bg-tertiary);
border: 1px solid var(--border);
border-radius: 4px;
padding: 0.75rem;
margin-bottom: 0.5rem;
display: flex;
align-items: center;
gap: 0.5rem;
cursor: pointer;
transition: all 0.2s;
position: relative;
}
.layer-item:hover {
background: var(--bg-hover);
}
.layer-item.active {
border-color: var(--accent);
background: rgba(255, 107, 53, 0.1);
}
.layer-item.locked {
opacity: 0.7;
cursor: not-allowed;
}
.layer-lock {
width: 24px;
height: 24px;
background: transparent;
border: none;
color: var(--text-secondary);
cursor: pointer;
padding: 0;
flex-shrink: 0;
}
.layer-lock:hover {
color: var(--text-primary);
}
.layer-thumbnail {
width: 48px;
height: 48px;
background: var(--bg-primary);
border-radius: 4px;
border: 1px solid var(--border);
flex-shrink: 0;
}
.layer-info {
flex: 1;
min-width: 0;
}
.layer-name {
font-size: 0.875rem;
font-weight: 500;
}
.layer-type {
font-size: 0.75rem;
color: var(--text-secondary);
}
.layer-opacity-control {
display: flex;
align-items: center;
gap: 0.5rem;
margin-top: 0.25rem;
}
.layer-visibility {
width: 24px;
height: 24px;
background: transparent;
border: none;
color: var(--text-secondary);
cursor: pointer;
padding: 0;
flex-shrink: 0;
}
.layer-delete {
width: 24px;
height: 24px;
background: transparent;
border: none;
color: var(--text-secondary);
cursor: pointer;
padding: 0;
margin-left: 0.25rem;
flex-shrink: 0;
}
.layer-delete:hover {
color: var(--error);
}
/* Layer Drag and Drop */
.layer-item.dragging {
opacity: 0.5;
background: var(--bg-hover);
}
.layer-item.drag-over-top {
border-top: 2px solid var(--accent);
}
.layer-item.drag-over-bottom {
border-bottom: 2px solid var(--accent);
}
/* Buttons */
.btn {
background: var(--bg-tertiary);
border: 1px solid var(--border);
color: var(--text-primary);
padding: 0.5rem 1rem;
border-radius: 4px;
cursor: pointer;
transition: all 0.2s;
font-size: 0.875rem;
display: inline-flex;
align-items: center;
gap: 0.5rem;
}
.btn:hover {
background: var(--bg-hover);
border-color: var(--accent);
}
.btn-primary {
background: var(--accent);
color: var(--bg-primary);
border-color: var(--accent);
}
.btn-primary:hover {
background: var(--accent-hover);
border-color: var(--accent-hover);
}
.btn-icon {
padding: 0.5rem;
width: 36px;
height: 36px;
display: flex;
align-items: center;
justify-content: center;
}
/* Zoom Controls */
/* Export Modal */
.modal {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: rgba(0, 0, 0, 0.8);
display: none;
align-items: center;
justify-content: center;
z-index: 2000;
}
.modal.active {
display: flex;
}
.modal-content {
background: var(--bg-secondary);
border: 1px solid var(--border);
border-radius: 12px;
padding: 2rem;
max-width: 500px;
width: 90%;
max-height: 80vh;
overflow-y: auto;
}
.modal-header {
margin-bottom: 1.5rem;
}
.modal-title {
font-size: 1.5rem;
font-weight: 600;
margin-bottom: 0.5rem;
}
.modal-subtitle {
color: var(--text-secondary);
font-size: 0.875rem;
}
.form-group {
margin-bottom: 1rem;
}
.form-label {
display: block;
margin-bottom: 0.5rem;
font-size: 0.875rem;
color: var(--text-secondary);
}
.form-row {
display: flex;
gap: 0.5rem;
}
.form-row .form-group {
flex: 1;
}
/* Status Bar */
.status-bar {
background: var(--bg-secondary);
border-top: 1px solid var(--border);
padding: 0.5rem 1rem;
display: flex;
align-items: center;
justify-content: space-between;
font-size: 0.875rem;
color: var(--text-secondary);
height: 32px;
}
.status-info {
display: flex;
gap: 2rem;
}
/* Color Picker */
.color-picker-wrapper {
display: flex;
gap: 0.5rem;
align-items: center;
}
.color-preview {
width: 48px;
height: 48px;
border-radius: 4px;
border: 2px solid var(--border);
cursor: pointer;
position: relative;
overflow: hidden;
}
.color-input {
position: absolute;
opacity: 0;
width: 100%;
height: 100%;
cursor: pointer;
}
/* Flow Visualization */
.viz-toggle {
display: flex;
gap: 0.25rem;
}
.viz-btn {
padding: 0.25rem 0.5rem;
background: var(--bg-tertiary);
border: 1px solid var(--border);
border-radius: 4px;
color: var(--text-secondary);
font-size: 0.75rem;
cursor: pointer;
transition: all 0.2s;
}
.viz-btn.active {
background: var(--accent);
color: var(--bg-primary);
border-color: var(--accent);
}
/* Responsive */
@media (max-width: 1024px) {
.right-sidebar {
width: 240px;
}
}
@media (max-width: 768px) {
.main-container {
flex-direction: column;
overflow-y: auto;
}
.toolbar {
width: 100%;
flex-direction: row;
padding: 0.5rem;
overflow-x: auto;
flex-shrink: 0;
}
.canvas-container {
min-height: 350px;
flex: 0 0 auto;
}
.right-sidebar {
width: 100%;
height: auto;
overflow: visible;
}
.properties-panel, .layers-panel {
flex: 0 0 auto;
overflow: visible;
}
.panel-content, .layers-list {
overflow: visible;
max-height: none;
}
}
@media (max-width: 600px) {
.header {
padding: 0.5rem;
}
.header-left {
gap: 0.5rem;
}
.logo span, .btn-text {
display: none;
}
}
/* Loading Animation */
.loading {
display: inline-block;
width: 16px;
height: 16px;
border: 2px solid var(--border);
border-top-color: var(--accent);
border-radius: 50%;
animation: spin 1s linear infinite;
}
@keyframes spin {
to { transform: rotate(360deg); }
}
/* Checkbox styling */
.checkbox-wrapper {
display: flex;
align-items: center;
gap: 0.5rem;
}
input[type="checkbox"] {
width: 18px;
height: 18px;
accent-color: var(--accent);
cursor: pointer;
}
/* Radial Direction Picker */
.direction-picker {
width: 60px;
height: 60px;
border-radius: 50%;
border: 2px solid var(--border);
background: var(--bg-tertiary);
position: relative;
cursor: pointer;
margin: 0.5rem auto;
}
.direction-indicator {
position: absolute;
top: 50%;
left: 50%;
width: 50%;
height: 2px;
background: var(--accent);
transform-origin: 0 50%;
transform: rotate(0deg);
pointer-events: none;
margin-top: -1px;
}
.direction-indicator::after {
content: '';
position: absolute;
right: 4px;
top: -3px;
width: 8px;
height: 8px;
background: var(--accent);
border-radius: 50%;
box-shadow: 0 0 5px rgba(255, 107, 53, 0.5);
}
</style>
</head>
<body>
<!-- Header -->
<header class="header">
<div class="header-left">
<div class="logo">
<div class="logo-icon">F</div>
<span>Flow Forge</span>
</div>
</div>
<div class="header-controls">
<button class="btn btn-icon" onclick="document.getElementById('projectLoader').click()" title="Open Project">
<svg width="16" height="16" fill="currentColor" viewBox="0 0 24 24">
<path d="M20 6h-8l-2-2H4c-1.1 0-1.99.9-1.99 2L2 18c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V8c0-1.1-.9-2-2-2zm0 12H4V8h16v10z"/>
</svg>
</button>
<button class="btn btn-icon" onclick="flowMap.saveProject()" title="Save Project">
<svg width="16" height="16" fill="currentColor" viewBox="0 0 24 24">
<path d="M17 3H5c-1.11 0-2 .9-2 2v14c0 1.1.89 2 2 2h14c1.1 0 2-.9 2-2V7l-4-4zm-5 16c-1.66 0-3-1.34-3-3s1.34-3 3-3 3 1.34 3 3-1.34 3-3 3zm3-10H5V5h10v4z"/>
</svg>
</button>
<input type="file" id="projectLoader" style="display: none" accept=".json" onchange="flowMap.loadProject(this)">
<button class="btn btn-icon" onclick="flowMap.undo()" title="Undo">
<svg fill="currentColor" viewBox="0 0 24 24">
<path d="M12.5 8c-2.65 0-5.05.99-6.9 2.6L2 7v9h9l-3.62-3.62c1.39-1.16 3.16-1.88 5.12-1.88 3.54 0 6.55 2.31 7.6 5.5l2.37-.78C21.08 11.03 17.15 8 12.5 8z"/>
</svg>
</button>
<button class="btn btn-icon" onclick="flowMap.redo()" title="Redo">
<svg fill="currentColor" viewBox="0 0 24 24">
<path d="M18.4 10.6C16.55 8.99 14.15 8 11.5 8c-4.65 0-8.58 3.03-9.96 7.22L3.9 16c1.05-3.19 4.05-5.5 7.6-5.5 1.95 0 3.73.72 5.12 1.88L13 16h9V7l-3.6 3.6z"/>
</svg>
</button>
<button class="btn btn-primary" onclick="flowMap.showExportModal()">
<svg width="16" height="16" fill="currentColor" viewBox="0 0 24 24">
<path d="M19 9h-4V3H9v6H5l7 7 7-7zM5 18v2h14v-2H5z"/>
</svg>
<span class="btn-text">Export</span>
</button>
</div>
</header>
<!-- Main Container -->
<div class="main-container">
<!-- Toolbar -->
<div class="toolbar">
<button class="tool-btn active" data-tool="brush" onclick="flowMap.setTool('brush')">
<svg fill="currentColor" viewBox="0 0 24 24">
<path d="M7 14c-1.66 0-3 1.34-3 3 0 1.31-1.16 2-2 2 .92 1.22 2.49 2 4 2 2.21 0 4-1.79 4-4 0-1.66-1.34-3-3-3zm13.71-9.37l-1.34-1.34c-.39-.39-1.02-.39-1.41 0L9 12.25 11.75 15l8.96-8.96c.39-.39.39-1.02 0-1.41z"/>
</svg>
<span class="tooltip">Brush Tool</span>
</button>
<button class="tool-btn" data-tool="eraser" onclick="flowMap.setTool('eraser')">
<svg fill="currentColor" viewBox="0 0 24 24">
<path d="M15.14 3c-.51 0-1.02.2-1.41.59L2.59 14.73c-.78.78-.78 2.05 0 2.83L5.03 20H7.66 20v-2H9.66l5.75-5.75c.78-.78.78-2.05 0-2.83L16.55 3.59c-.39-.39-.9-.59-1.41-.59zm0 2.41L19.59 10 17 12.59 13.41 9l1.73-1.73z"/>
</svg>
<span class="tooltip">Eraser Tool</span>
</button>
</div>
<!-- Canvas Container -->
<div class="canvas-container">
<div class="canvas-wrapper">
<canvas id="flowCanvas" width="1024" height="1024"></canvas>
<canvas id="previewCanvas" width="1024" height="1024"></canvas>
<div id="brushCursor"></div>
</div>
</div>
<div class="right-sidebar">
<!-- Properties Panel -->
<div class="properties-panel" id="propertiesPanel">
<div class="panel-header" onclick="flowMap.togglePanel('propertiesPanel')">
<span>
<svg class="panel-toggle-icon" width="12" height="12" viewBox="0 0 24 24" fill="currentColor">
<path d="M7 10l5 5 5-5z"/>
</svg>
Brush Properties
</span>
</div>
<div class="panel-content">
<div class="property-group">
<label class="property-label" for="brushSize">Brush Size</label>
<div class="property-control">
<input type="range" id="brushSize" min="1" max="400" value="60">
<span class="value-display" id="brushSizeValue">60</span>
</div>
</div>
<div class="property-group">
<label class="property-label" for="flowStrength">Flow Strength</label>
<div class="property-control">
<input type="range" id="flowStrength" min="0" max="100" value="100">
<span class="value-display" id="flowStrengthValue">100%</span>
</div>
</div>
<div class="property-group">
<label class="property-label" for="brushOpacity">Opacity</label>
<div class="property-control">
<input type="range" id="brushOpacity" min="0" max="100" value="100">
<span class="value-display" id="brushOpacityValue">100%</span>
</div>
</div>
<div class="property-group">
<div class="checkbox-wrapper">
<input type="checkbox" id="tileablePainting">
<label for="tileablePainting" class="property-label" style="margin-bottom: 0;">Tileable Painting</label>
</div>
</div>
<div class="property-group">
<div class="checkbox-wrapper">
<input type="checkbox" id="useMouseDirection" checked>
<label for="useMouseDirection" class="property-label" style="margin-bottom: 0;">Use Mouse Direction</label>
</div>
</div>
<div class="property-group" id="manualDirectionGroup" style="display: none;">
<div class="property-label">Direction Angle</div>
<div class="property-control" style="flex-direction: column;">
<div id="directionPicker" class="direction-picker">
<div id="directionIndicator" class="direction-indicator"></div>
</div>
<span class="value-display" id="manualDirectionValue">0°</span>
</div>
</div>
</div>
</div>
<!-- Canvas Panel -->
<div class="canvas-panel" id="canvasPanel">
<div class="panel-header" onclick="flowMap.togglePanel('canvasPanel')">
<span>
<svg class="panel-toggle-icon" width="12" height="12" viewBox="0 0 24 24" fill="currentColor">
<path d="M7 10l5 5 5-5z"/>
</svg>
Canvas
</span>
</div>
<div class="panel-content" style="padding-bottom: 0;">
<div class="property-group">
<label class="property-label" for="canvasResolution">Resolution</label>
<select id="canvasResolution" onchange="flowMap.setResolution(this.value)">
<option value="32">32 x 32</option>
<option value="64">64 x 64</option>
<option value="128">128 x 128</option>
<option value="256">256 x 256</option>
<option value="512">512 x 512</option>
<option value="1024" selected>1024 x 1024</option>
<option value="2048">2048 x 2048</option>
<option value="4096">4096 x 4096</option>
</select>
</div>
<div class="property-group">
<div class="property-label">Visualization</div>
<div class="viz-toggle">
<button class="viz-btn active" style="flex: 1;" onclick="flowMap.setVisualization('flow')">Flow</button>
<button class="viz-btn" style="flex: 1;" onclick="flowMap.setVisualization('arrows')">Arrows</button>
<button class="viz-btn" style="flex: 1;" onclick="flowMap.setVisualization('preview')">Preview</button>
</div>
</div>
</div>
</div>
<!-- Layers Panel -->
<div class="layers-panel" id="layersPanel">
<div class="panel-header" onclick="flowMap.togglePanel('layersPanel')">
<span>
<svg class="panel-toggle-icon" width="12" height="12" viewBox="0 0 24 24" fill="currentColor">
<path d="M7 10l5 5 5-5z"/>
</svg>
Layers
</span>
<button class="btn btn-icon" onclick="event.stopPropagation(); flowMap.addLayer()">
<svg width="16" height="16" fill="currentColor" viewBox="0 0 24 24">
<path d="M19 13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
</svg>
</button>
</div>
<div class="layers-list" id="layersList">
<!-- Layers will be populated by JavaScript -->
</div>
</div>
</div>
</div>
<!-- Status Bar -->
<div class="status-bar">
<div class="status-info">
<span>Canvas: <strong id="canvasSize">1024x1024</strong></span>
<span>Tool: <strong id="currentTool">Brush</strong></span>
</div>
<div class="status-info">
<span>FPS: <strong id="fps">60</strong></span>
</div>
</div>
<!-- Export Modal -->
<div class="modal" id="exportModal">
<div class="modal-content">
<div class="modal-header">