Node App

.gitignore

@@ -0,0 +1 @@
+node_modules/

Dockerfile

@@ -0,0 +1,20 @@
+# Node version 20
+FROM node:20.8.0
+
+# Set the working directory in the container
+WORKDIR /usr/src/app
+
+# Copy package.json and package-lock.json to the working directory
+COPY package*.json ./
+
+# Install app dependencies
+RUN npm install
+
+# Copy the application code to the working directory
+COPY . .
+
+# Expose the port the app runs on
+EXPOSE 3000
+
+# Command to run your application
+CMD ["node", "app.js"]

app.js

@@ -0,0 +1,14 @@
+const express = require('express');
+const app = express();
+const path = require('path');
+
+app.use(express.static('public'));
+
+app.get('/', (req, res) => {
+    res.sendFile(path.join(__dirname, 'public', 'index.html'));
+});
+
+const PORT = process.env.PORT || 3000;
+app.listen(PORT, () => {
+    console.log(`Server is running on port ${PORT}`);
+});

package-lock.json

@@ -0,0 +1,688 @@
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+  "name": "docker-opencv",
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+  "requires": true,
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+    "": {
+      "name": "docker-opencv",
+      "version": "1.0.0",
+      "license": "MIT",
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+      "engines": {
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+    "node_modules/vary": {
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+}

package.json

@@ -0,0 +1,15 @@
+{
+  "name": "docker-opencv",
+  "version": "1.0.0",
+  "description": "--- title: Docker Opencv emoji: 🦀 colorFrom: purple colorTo: purple sdk: docker pinned: false license: mit ---",
+  "main": "app.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "express": "^4.18.2",
+    "path": "^0.12.7"
+  }
+}

public/index.html

@@ -0,0 +1,12 @@
+<html>
+  <head>
+    <script src="https://cdn.jsdelivr.net/npm/p5@1.8.0/lib/p5.js"></script>
+    
+  </head>
+  <body>
+    <main>
+        <h1>Hola</h1>
+        <script src="sketch.js"></script>
+    </main>
+  </body>
+</html>

public/sketch.js

@@ -0,0 +1,41 @@
+
+let video;
+
+
+function setup() {
+  createCanvas(400, 300);
+  
+  video = createCapture(VIDEO);
+  video.hide();
+  video.loop();
+}
+
+function draw() {
+  background(0);
+  
+  let stepSize = floor(map(mouseX, 0, width, 4, 40));
+    
+  video.loadPixels();
+  for (let x = 0; x < video.width; x += stepSize) {
+    for (let y = 0; y < video.height; y += stepSize) {
+      let i = (y * video.width + x) * 4;
+      
+      let r = video.pixels[i];
+      let g = video.pixels[i+1];
+      let b = video.pixels[i+2];
+      let a = video.pixels[i+3];
+      
+      let luma = 0.299 * r + 0.587 * g + 0.114 * b;
+      
+      let diameter = map(luma, 0, 255, 0, stepSize);
+      fill(255);
+      noStroke();
+      ellipse(
+        map(x, 0, video.width, 0, width),
+        map(y, 0, video.height, 0, height),
+        diameter,
+        diameter
+      );
+    }
+  }
+}