Piano synth · nova-lite-v1
Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.
transcript · 6 messages
Using the pre-provided tone.min.js (global Tone), build a playable piano keyboard controlled by mouse and computer keys that synthesizes notes with an ADSR envelope and visual key feedback.
<thinking>The user wants to build a single-page web app that uses the `tone.min.js` library to create a playable piano keyboard. The keyboard should respond to both mouse clicks and keyboard key presses, and it should use an ADSR envelope for note synthesis. The app should also provide visual feedback for the keys. I need to create the HTML structure, CSS styling, and JavaScript logic to implement this functionality.</thinking>
{"path":"tone.min.js"}/*! For license information please see Tone.js.LICENSE.txt */ [Showing lines 1-1 of 3 (50.0KB limit). Use offset=2 to continue.]
<thinking>I've read the initial part of the `tone.min.js` file, which confirms that it's a valid JavaScript library. I need to create an HTML file that includes the `tone.min.js` library and implements the piano keyboard functionality. I will use inline CSS for styling and inline JavaScript for the logic. I'll start by creating the basic HTML structure and include the necessary CSS and JavaScript code.</thinking> <thinking>I've created the `index.html` file with the basic structure, CSS styling, and JavaScript logic for the playable piano keyboard. The JavaScript code sets up the synthesizer with an ADSR envelope and adds event listeners to the piano keys to play notes when they are clicked or touched. The keyboard also responds to key presses on the computer keyboard. The app is now ready to be tested.</thinking> Here is the `index.html` file with the complete code: ```html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Playable Piano Keyboard</title> <style> /* CSS for the piano keyboard */ .keyboard { display: flex; flex-wrap: wrap; } .key { width: 6%; height: 100px; border: 1px solid #ccc; margin: 1%; display: flex; justify-content: center; align-items: center; position: relative; } .key:active::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.1); z-index: -1; } .key-black { width: 40%; height: 60px; margin: 2%; } </style> </head> <body> <div class="keyboard"> <!-- Piano keys will be added here --> </div> <script src="tone.min.js"></script> <script> // JavaScript for the piano keyboard const keys = [ 'C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B' ]; const keyboardDiv = document.querySelector('.keyboard'); // Create piano keys keys.forEach((note, index) => { const key = document.createElement('div'); key.className = 'key' + (index % 12 === 6? ' key-black' : ''); key.textContent = note; keyboardDiv.appendChild(key); key.addEventListener('mousedown', () => playNote(note)); key.addEventListener('touchstart', () => playNote(note)); }); // Synthesizer setup const synth = new Tone.Synth().toDestination(); synth.set({ oscillator: { type: 'sawtooth' }, envelope: { attack: 0.05, decay: 0.2, sustain: 0.3, release: 0.5 } }); // Function to play a note function playNote(note) { if (Tone.getContext().state === 'running') { synth.triggerAttackRelease(note + '4', '8n'); } } // Function to handle key presses document.addEventListener('keydown', (event) => { const key = event.key.toUpperCase(); if (keys.includes(key)) { playNote(key); } }); </script> </body> </html> ``` You can open this `index.html` file in a web browser to test the playable piano keyboard.
index.html (2595 bytes)Successfully wrote 2595 bytes to index.html
<thinking>The `index.html` file has been successfully written with the complete code for the playable piano keyboard. The user can now open this file in a web browser to test the functionality.</thinking> Here is the `index.html` file with the complete code: ```html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Playable Piano Keyboard</title> <style> /* CSS for the piano keyboard */ .keyboard { display: flex; flex-wrap: wrap; } .key { width: 6%; height: 100px; border: 1px solid #ccc; margin: 1%; display: flex; justify-content: center; align-items: center; position: relative; } .key:active::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.1); z-index: -1; } .key-black { width: 40%; height: 60px; margin: 2%; } </style> </head> <body> <div class="keyboard"> <!-- Piano keys will be added here --> </div> <script src="tone.min.js"></script> <script> // JavaScript for the piano keyboard const keys = [ 'C', 'C#', 'D', 'D#', 'E', 'F', 'F#', 'G', 'G#', 'A', 'A#', 'B' ]; const keyboardDiv = document.querySelector('.keyboard'); // Create piano keys keys.forEach((note, index) => { const key = document.createElement('div'); key.className = 'key' + (index % 12 === 6? ' key-black' : ''); key.textContent = note; keyboardDiv.appendChild(key); key.addEventListener('mousedown', () => playNote(note)); key.addEventListener('touchstart', () => playNote(note)); }); // Synthesizer setup const synth = new Tone.Synth().toDestination(); synth.set({ oscillator: { type: 'sawtooth' }, envelope: { attack: 0.05, decay: 0.2, sustain: 0.3, release: 0.5 } }); // Function to play a note function playNote(note) { if (Tone.getContext().state === 'running') { synth.triggerAttackRelease(note + '4', '8n'); } } // Function to handle key presses document.addEventListener('keydown', (event) => { const key = event.key.toUpperCase(); if (keys.includes(key)) { playNote(key); } }); </script> </body> </html> ``` You can open this `index.html` file in a web browser to test the playable piano keyboard.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
EVALUATION
Basic unstyled piano keys render; drag/keyboard highlight some keys blue but click and layout look broken/ugly.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.