Feature/add custom controls

string-art-demo/src/App.css

@@ -1,10 +1,11 @@
 .app {
   min-height: 100vh;
-  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-  padding: 1rem;
+  width: 100vw;
+  background: linear-gradient(0deg, #8f91ff 0%, #7476ff 100%);
 }
 
 .app-header {
+  padding-top: 1rem;
   text-align: center;
   color: white;
   margin-bottom: 2rem;
@@ -47,6 +48,8 @@
   background: white;
   border-radius: 8px;
   padding: 1.5rem;
+  display: flex;
+  flex-direction: column;
   box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
 }
 
@@ -89,6 +92,7 @@
 }
 
 .generate-button {
+  margin-top: 15px;
   width: 100%;
   padding: 1rem;
   background: #28a745;

string-art-demo/src/App.tsx

@@ -1,19 +1,17 @@
 import { useState, useCallback } from 'react';
 import { ImageUploader } from './components/ImageUploader';
 import { StringArtCanvas } from './components/StringArtCanvas';
-import { useStringArt, type StringArtConfig, type ProgressInfo } from './hooks/useStringArt';
 import './App.css';
-
+import StringArtConfigSection from './components/StringArtConfig/StringArtConfigSection';
+import { useStringArt, type ProgressInfo } from './useStringArt';
 function App() {
-  const { wasmModule, isLoading, error, generateStringArt, presets } = useStringArt();
   const [imageData, setImageData] = useState<Uint8Array | null>(null);
   const [imageUrl, setImageUrl] = useState<string>('');
   const [isGenerating, setIsGenerating] = useState(false);
   const [currentPath, setCurrentPath] = useState<number[]>([]);
   const [nailCoords, setNailCoords] = useState<Array<[number, number]>>([]);
   const [progress, setProgress] = useState<ProgressInfo | null>(null);
-  const [config, setConfig] = useState<StringArtConfig>(presets.balanced());
-
+  const { generateStringArt, isLoading, error, settings } = useStringArt();
   const handleImageSelected = useCallback((data: Uint8Array, url: string) => {
     setImageData(data);
     setImageUrl(url);
@@ -22,8 +20,8 @@ function App() {
     setNailCoords([]); // Clear until we generate the string art
   }, []);
 
-  const handleStartGeneration = useCallback(async () => {
-    if (!imageData || !wasmModule) return;
+  const handleStartGeneration = async () => {
+    if (!imageData) return;
 
     setIsGenerating(true);
     setCurrentPath([]);
@@ -41,9 +39,9 @@ function App() {
         setNailCoords(coords);
       };
 
-      const result = await generateStringArt(imageData, config, onProgress, onNailCoords);
+      const result = await generateStringArt(imageData, onProgress, onNailCoords);
       if (result.path) {
-        setCurrentPath(result.path);
+        setCurrentPath((prevPath) => [...prevPath, ...(result.path || [])]);
       }
       if (result.nailCoords.length > 0) {
         setNailCoords(result.nailCoords);
@@ -54,11 +52,7 @@ function App() {
     } finally {
       setIsGenerating(false);
     }
-  }, [imageData, wasmModule, config, generateStringArt]);
-
-  const handlePresetChange = useCallback((presetName: 'fast' | 'balanced' | 'highQuality') => {
-    setConfig(presets[presetName]());
-  }, [presets]);
+  };
 
   if (isLoading) {
     return (
@@ -98,33 +92,8 @@ function App() {
 
           {imageData && (
             <div className="generation-controls">
-              <div className="config-section">
-                <h3>Quality Presets</h3>
-                <div className="preset-buttons">
-                  <button 
-                    onClick={() => handlePresetChange('fast')}
-                    className={`preset-button ${config.num_nails === 360 ? 'active' : ''}`}
-                    disabled={isGenerating}
-                  >
-                    Fast (360 nails)
-                  </button>
-                  <button 
-                    onClick={() => handlePresetChange('balanced')}
-                    className={`preset-button ${config.num_nails === 720 ? 'active' : ''}`}
-                    disabled={isGenerating}
-                  >
-                    Balanced (720 nails)
-                  </button>
-                  <button 
-                    onClick={() => handlePresetChange('highQuality')}
-                    className={`preset-button ${config.num_nails === 1440 ? 'active' : ''}`}
-                    disabled={isGenerating}
-                  >
-                    High Quality (1440 nails)
-                  </button>
-                </div>
-              </div>
-
+              <StringArtConfigSection key={"stringArt"} settings={settings} />
+
               <button 
                 onClick={handleStartGeneration}
                 disabled={isGenerating}
@@ -146,7 +115,6 @@ function App() {
                     ></div>
                   </div>
                   <div className="progress-details">
-                    <span>Current: Nail {progress.current_nail} → {progress.next_nail}</span>
                     <span>Score: {progress.score.toFixed(1)}</span>
                   </div>
                 </div>

string-art-demo/src/components/StringArtCanvas.tsx

@@ -27,14 +27,21 @@ export const StringArtCanvas: React.FC<StringArtCanvasProps> = ({
     const ctx = canvas.getContext('2d');
     if (!ctx) return;
 
-    // Clear canvas
+    // Always clear the canvas at the start of a render
     ctx.fillStyle = 'white';
-    ctx.fillRect(0, 0, width, height);
+    ctx.clearRect(0, 0, width, height);
+
+    let isCancelled = false;
 
     if (showOriginal && imageUrl) {
-      // Show original image
       const img = new Image();
       img.onload = () => {
+        if (isCancelled) return;
+
+        // Clear canvas again right before drawing to prevent race conditions
+        ctx.fillStyle = 'white';
+        ctx.fillRect(0, 0, width, height);
+
         const scale = Math.min(width / img.width, height / img.height);
         const scaledWidth = img.width * scale;
         const scaledHeight = img.height * scale;
@@ -44,38 +51,41 @@ export const StringArtCanvas: React.FC<StringArtCanvasProps> = ({
         ctx.drawImage(img, x, y, scaledWidth, scaledHeight);
       };
       img.src = imageUrl;
-      return;
-    }
-
-    // Draw nails as small circles
-    ctx.fillStyle = '#666';
-    nailCoords.forEach(([x, y]) => {
-      ctx.beginPath();
-      ctx.arc(x, y, 2, 0, 2 * Math.PI);
-      ctx.fill();
-    });
-
-    // Draw string path
-    if (currentPath.length > 1) {
-      ctx.strokeStyle = 'rgba(0, 0, 0, 0.3)';
-      ctx.lineWidth = 0.5;
-      ctx.globalCompositeOperation = 'multiply';
-
-      for (let i = 0; i < currentPath.length - 1; i++) {
-        const fromNail = currentPath[i];
-        const toNail = currentPath[i + 1];
-
-        if (fromNail < nailCoords.length && toNail < nailCoords.length) {
-          const [x1, y1] = nailCoords[fromNail];
-          const [x2, y2] = nailCoords[toNail];
+    } else {
+      // Draw nails as small circles
+      ctx.fillStyle = '#666';
+      nailCoords.forEach(([x, y]) => {
+        ctx.beginPath();
+        ctx.arc(x, y, 2, 0, 2 * Math.PI);
+        ctx.fill();
+      });
+
+      // Draw string path
+      if (currentPath.length > 1) {
+        ctx.strokeStyle = 'rgba(0, 0, 0, 0.3)';
+        ctx.lineWidth = 0.5;
+        ctx.globalCompositeOperation = 'multiply';
+
+        for (let i = 0; i < currentPath.length - 1; i++) {
+          const fromNail = currentPath[i];
+          const toNail = currentPath[i + 1];
 
-          ctx.beginPath();
-          ctx.moveTo(x1, y1);
-          ctx.lineTo(x2, y2);
-          ctx.stroke();
+          if (fromNail < nailCoords.length && toNail < nailCoords.length) {
+            const [x1, y1] = nailCoords[fromNail];
+            const [x2, y2] = nailCoords[toNail];
+
+            ctx.beginPath();
+            ctx.moveTo(x1, y1);
+            ctx.lineTo(x2, y2);
+            ctx.stroke();
+          }
         }
       }
     }
+
+    return () => {
+      isCancelled = true;
+    };
   }, [width, height, nailCoords, currentPath, showOriginal, imageUrl]);
 
   return (
@@ -206,4 +216,4 @@ export const StringArtCanvas: React.FC<StringArtCanvasProps> = ({
       `}</style>
     </div>
   );
-};
+};

string-art-demo/src/components/StringArtConfig/StringArtConfigSection.tsx

@@ -0,0 +1,91 @@
+import { useEffect, useState, type RefObject } from "react";
+import { type StringArtConfig } from "../../useStringArt";
+
+const Slider = ({
+  title,
+  settingsRef,
+  index,
+}: {
+  title: string;
+  settingsRef: RefObject<StringArtConfig>;
+  index: keyof StringArtConfig;
+}) => {
+  const minMaxVals: Record<
+    keyof Omit<
+      StringArtConfig,
+      | "extract_subject"
+      | "remove_shadows"
+      | "preserve_eyes"
+      | "preserve_negative_space"
+    >,
+    [number, number, number, number]
+  > = {
+    //min, max, start
+    image_size: [500, 2000, 500, 100],
+    line_darkness: [25, 300, 100, 5],
+    max_lines: [800, 5000, 1000, 100],
+    min_improvement_score: [0, 100, 15, 1],
+    negative_space_penalty: [0, 100, 0, 1],
+    negative_space_threshold: [0, 100, 0, 1],
+    num_nails: [360, 1440, 360, 360/4],
+    progress_frequency: [200, 500, 200, 50],
+  };
+
+  const [val, setVal] = useState("0");
+  const dontRender = !index || !Object.keys(minMaxVals).includes(index as string)
+  const [min, max, start, step] = dontRender? [0,0,0,0] : minMaxVals[index as keyof typeof minMaxVals];
+
+  useEffect(() => {
+    setVal(String(start))
+  }, [start])
+
+  if (dontRender) return null;
+  if (!settingsRef?.current) return null;
+  return (
+    <div key={index}>
+      <input
+        defaultValue={start}
+        type="range"
+        id="volume"
+        name="volume"
+        min={min}
+        max={max}
+        step={step}
+        onChange={({ target }) => {
+          (settingsRef.current[index] as unknown) = target.value;
+          setVal(target.value);
+        }}
+      />
+      <label htmlFor="volume">{title} ({val})</label>
+    </div>
+  );
+};
+
+const StringArtConfigSection = ({
+  settings,
+}: {
+  settings: RefObject<StringArtConfig>;
+}) => {
+  if (!settings.current) {
+    return null;
+  }
+  return (
+    <section>
+      <h2>String Art Configuration</h2>
+      {(Object.keys(settings.current) as (keyof StringArtConfig)[]).map(
+        (key) => {
+          return (
+            <Slider
+              key={key}
+              index={key}
+              title={key.split("_").join(" ")}
+              settingsRef={settings}
+            />
+          );
+        }
+      )}
+    </section>
+  );
+};
+
+export default StringArtConfigSection;