Files
graphfx/ui/helpers.js
2019-01-02 19:16:16 +01:00

36 lines
1020 B
JavaScript

export const sampleImage = (width, height) => {
const c = document.createElement('canvas');
c.width = width;
c.height = height;
const ctx = c.getContext('2d');
const grd = ctx.createLinearGradient(0, 0, width, height);
grd.addColorStop(0, "black");
grd.addColorStop(1, "white");
ctx.fillStyle = grd;
ctx.fillRect(0, 0, width, height);
return c;
};
export const getStream = (callback) => {
navigator.getUserMedia({video: true}, (stream) => {
console.log(stream)
/** @type {HTMLVideoElement} */
const video = document.getElementById('Input');
video.srcObject = stream;
video.play();
let lastFrameTime = null;
const feedLoop = () => {
if (lastFrameTime !== video.currentTime) {
lastFrameTime = video.currentTime;
callback(video);
}
requestAnimationFrame(feedLoop);
};
feedLoop();
}, console.error.bind(console))
}