mirror of https://github.com/nealey/convulse.git
Okay now it's a fully-working app-type thingy
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ab799618f1
commit
9307c586df
32
convulse.css
32
convulse.css
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@ -4,13 +4,8 @@ body {
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margin: 0;
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font-family: sans-serif;
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}
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video {
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height: 100vh;
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width: 100vw;
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}
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canvas {
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width: 100vw;
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filter: grayscale(100%);
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}
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canvas.recording {
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filter: initial;
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@ -27,22 +22,39 @@ canvas.recording {
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position: fixed;
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z-index: 2;
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top: 0;
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background-color: blue;
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background-color: rgba(40, 40, 200, 0.3);
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width: 100%;
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opacity: 0.3;
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text-align: center;
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}
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#controls {
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position: fixed;
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z-index: 2;
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width: 100%;
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background-color: ;
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background-color: rgba(0, 0, 0, 0.8);
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opacity: 0.8;
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bottom: 0;
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}
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video {
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display: none;
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#rec, #save {
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font: 12pt sans-serif;
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padding: 1em 2em;
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margin: 0.2em 1em;
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background: #ccc;
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border: none;
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border-radius: 3px;
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}
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dt {
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font-weight: bold;
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}
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#indicator {
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position: fixed;
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top: 0.3em;
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right: 0.3em;
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font: 18pt sans-serif;
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color: red;
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animation: blinker 0.5s cubic-bezier(0, 0.87, 0.58, 1) infinite alternate;
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}
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@keyframes blinker {
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from { opacity: 0; }
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to { opacity: 1; }
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}
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@ -24,6 +24,7 @@
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</div>
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<canvas></canvas>
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<div id="indicator">⬤</div>
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<div id="videos" class="hidden">
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<video id="webcam"></video>
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@ -31,17 +32,21 @@
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</div>
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<div id="controls">
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<p>
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<div class="hidden">
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<button id="rec">⏺️</button>
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<a id="save">💾</a>
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</div>
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<div id="webcam-controls">
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UR FACE
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<input id="webcam-size" type="range" min="0.05" max="1.0" step="0.05" value="0.2">
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<input id="webcam-size" type="range" min="0.05" max="1.0" step="0.01" value="0.2">
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<button id="webcam-pos">Move</button>
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</p>
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</div>
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<p>
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<div id="desktop-controls">
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Capture Area
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<input id="capture-size" type="range" min="0.04" max="1.0" step="0.05" value="0.2">
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<button id="range-pos">Move</button>
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</p>
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<input id="desktop-size" type="range" min="1.0" max="3.0" step="0.01" value="0.2">
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<button id="desktop-pos">Move</button>
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</div>
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</div>
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<div id="toasts"></div>
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185
convulse.js
185
convulse.js
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@ -1,5 +1,7 @@
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// jshint asi:true
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Math.TAU = Math.PI * 2
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function toast(text, timeout=8000) {
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let toasts = document.querySelector("#toasts")
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if (! text) {
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@ -17,85 +19,41 @@ function toast(text, timeout=8000) {
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class Convulse {
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constructor() {
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this.chunks = []
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this.canvas = document.querySelector("canvas")
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this.ctx = this.canvas.getContext("2d")
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this.dllink = document.querySelector("#download")
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this.webcamVideo = document.querySelector("#webcam")
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this.desktopVideo = document.querySelector("#desktop")
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document.addEventListener("click", event => this.toggle())
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this.chunks = []
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this.canvas.width = 1920
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this.canvas.height = 1080
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document.querySelector("#indicator").classList.add("hidden")
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document.addEventListener("mouseenter", e => this.showControls(true))
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document.addEventListener("mouseleave", e => this.showControls(false))
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document.querySelector("canvas").addEventListener("click", e => this.rec(e))
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document.querySelector("#rec").addEventListener("click", e => this.rec(e))
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//document.querySelector("#save").addEventListener("click", e => this.save(e))
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document.querySelector("#webcam-size").addEventListener("input", e => this.setWebcamSize(e))
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document.querySelector("#webcam-size").value = localStorage.webcamSize || 0.3
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document.querySelector("#webcam-size").dispatchEvent(new Event("input"))
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document.querySelector("#webcam-pos").addEventListener("click", e => this.setWebcamPos(e))
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this.webcamPos = localStorage.webcamPos || 2
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document.querySelector("#desktop-size").addEventListener("input", e => this.setDesktopSize(e))
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document.querySelector("#desktop-size").value = localStorage.desktopSize || 2.0
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document.querySelector("#desktop-size").dispatchEvent(new Event("input"))
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document.querySelector("#desktop-pos").addEventListener("click", e => this.setDesktopPos(e))
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this.desktopPos = localStorage.desktopPos || 0
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this.init()
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}
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showControls(show) {
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let controls = document.querySelector("#controls")
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if (show) {
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controls.classList.remove("hidden")
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} else {
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controls.classList.add("hidden")
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}
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}
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download(event) {
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let recording = window.URL.createObjectURL(new Blob(this.chunks, {type: this.recorder.mimeType}))
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let now = new Date().toISOString()
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this.dllink.addEventListener('progress', event => console.log(event))
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this.dllink.href = recording
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this.dllink.download = "convulse-" + now + ".webm"
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this.dllink.click()
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}
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start() {
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toast(null)
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this.chunks = []
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this.recorder.start(10)
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this.canvas.classList.add("recording")
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}
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stop() {
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toast("stopped and downloaded")
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this.recorder.stop()
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this.canvas.classList.remove("recording")
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}
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toggle() {
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if (this.recorder.state == "recording") {
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this.stop()
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this.download()
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} else {
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this.start()
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}
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}
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frame(timestamp) {
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if (this.webcamVideo.videoWidth > 0) {
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let webcamAR = this.webcamVideo.videoWidth / this.webcamVideo.videoHeight
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let desktopAR = this.desktopVideo.videoWidth / this.desktopVideo.videoHeight
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this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height)
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this.ctx.drawImage(this.desktopVideo, 0, 0, this.canvas.height * desktopAR, this.canvas.height)
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this.ctx.drawImage(this.webcamVideo, 0, 0, webcamAR * 400, 400)
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if (timestamp % 2000 < 1000) {
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this.ctx.beginPath()
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this.ctx.strokeStyle = "red"
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this.ctx.lineWidth = "6"
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this.ctx.rect(20, 20, 150, 100)
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this.ctx.stroke()
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}
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}
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requestAnimationFrame(ts => this.frame(ts))
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}
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async init() {
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this.canvas.width = 1920
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this.canvas.height = 1080
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this.webcamVideo.muted = true
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this.webcamVideo.srcObject = await navigator.mediaDevices.getUserMedia({video: true, audio: true})
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this.webcamVideo.play()
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@ -115,7 +73,7 @@ class Convulse {
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console.log("Adding audio track", at)
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}
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this.recorder = new MediaRecorder(this.canvas.captureStream(30), {mimeType: "video/webm"})
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this.recorder = new MediaRecorder(this.mediaStream, {mimeType: "video/webm"})
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this.recorder.addEventListener("dataavailable", event => {
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if (event.data && event.data.size > 0) {
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this.chunks.push(event.data)
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@ -126,6 +84,97 @@ class Convulse {
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toast("Click anywhere to start and stop recording")
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}
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setWebcamSize(event) {
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this.webcamSize = event.target.value
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localStorage.webcamSize = this.webcamSize
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}
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setWebcamPos(event) {
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this.webcamPos = (this.webcamPos + 1) % 9
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localStorage.webcamPos = this.webcamPos
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}
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setDesktopSize(event) {
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this.desktopSize = event.target.value
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localStorage.desktopSize = this.desktopSize
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}
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setDesktopPos(event) {
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this.desktopPos = (this.desktopPos + 1) % 9
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localStorage.desktopPos = this.desktopPos
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}
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rec(event) {
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let button = document.querySelector("#rec")
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if (this.recorder.state == "recording") {
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// Stop
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this.recorder.stop()
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this.canvas.classList.remove("recording")
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document.querySelector("#indicator").classList.add("hidden")
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button.textContent = "⏺️"
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toast("Stopped")
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this.save()
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} else {
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// Start
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this.recorder.start(10)
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this.canvas.classList.add("recording")
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document.querySelector("#indicator").classList.remove("hidden")
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button.textContent = "⏹️"
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toast("Recording: click anywhere to stop")
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}
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}
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showControls(show) {
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let controls = document.querySelector("#controls")
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if (show) {
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controls.classList.remove("hidden")
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} else {
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controls.classList.add("hidden")
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}
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}
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save(event) {
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let recording = window.URL.createObjectURL(new Blob(this.chunks, {type: this.recorder.mimeType}))
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let now = new Date().toISOString()
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let saveButton = document.querySelector("#save")
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saveButton.addEventListener('progress', event => console.log(event))
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saveButton.href = recording
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saveButton.download = "convulse-" + now + ".webm"
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saveButton.click()
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}
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frame(timestamp) {
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if (this.webcamVideo.videoWidth > 0) {
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this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height)
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let desktopAR = this.desktopVideo.videoWidth / this.desktopVideo.videoHeight
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let desktopHeight = this.canvas.height * this.desktopSize
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let desktopWidth = desktopHeight * desktopAR
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let desktopY = (this.canvas.height - desktopHeight) * (Math.floor(this.desktopPos / 3) / 2)
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let desktopX = (this.canvas.width - desktopWidth) * (Math.floor(this.desktopPos % 3) / 2)
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this.ctx.drawImage(
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this.desktopVideo,
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desktopX, desktopY,
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desktopWidth, desktopHeight
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)
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let webcamAR = this.webcamVideo.videoWidth / this.webcamVideo.videoHeight
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let webcamHeight = this.canvas.height * this.webcamSize
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let webcamWidth = webcamHeight * webcamAR
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let webcamY = (this.canvas.height - webcamHeight) * (Math.floor(this.webcamPos / 3) / 2)
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let webcamX = (this.canvas.width - webcamWidth) * (Math.floor(this.webcamPos % 3) / 2)
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this.ctx.drawImage(
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this.webcamVideo,
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webcamX, webcamY,
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webcamWidth, webcamHeight
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)
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}
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requestAnimationFrame(ts => this.frame(ts))
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}
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}
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function init() {
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