poses/dots-and-lines.html at main · remotehack/poses · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

    <style>
        body {
            margin: 0;
            padding: 0;
        }

        output {
            display: block;
            white-space: pre;
        }

        #canvasholder {
            /* background-image: url(ben.jpg); */
            background-size: cover;
            width: 640px;
            height: 480px;
            position: relative;
        }

        #canvasholder canvas {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: #ccc
        }

        video {
            position: absolute;
            top: 0;
            left: 0;
            opacity: .4;
        }
    </style>
</head>

<body>


    <div id="canvasholder"><canvas></canvas></div>

    <output></output>

    <script src="https://unpkg.com/@tensorflow/tfjs"></script>
    <script src="https://unpkg.com/@tensorflow-models/posenet">
    </script>
    <script type="module">
        import { getDemoPose, getPoseFromImage, PoseStream } from './poses.js';
        const canvas = document.querySelector("#canvasholder canvas");

        canvas.width = 640;
        canvas.height = 480;

        const ctx = canvas.getContext('2d');

        window.lastKnownGoodPose = null;


        function tidiedPoseData(pose) {
            // console.log(pose.score);

            // If it's a good enough pose, save it
            if (pose.score > 0.51) {
                window.lastKnownGoodPose = pose;
            }
            // if we've got one saved then use it
            if (window.lastKnownGoodPose) {
                pose = window.lastKnownGoodPose;
            }
            const usedParts = [
                "rightShoulder", "rightElbow", "rightWrist",
                "leftShoulder", "leftElbow", "leftWrist"
            ];
            const filteredParts = pose.keypoints.filter((point) => {
                delete point.score; // don't need this
                return usedParts.includes(point.part);
            })

            return filteredParts;
        }

        function poseAsLimbs(pose) {
            /*
                Actual order that we get is:

                leftShoulder, rightShoulder, leftElbow, rightElbow, leftWrist, rightWrist

            */

            const limbs = {
                leftBicep: [pose[0].position, pose[2].position, "#f00"],
                leftForearm: [pose[2].position, pose[4].position, "#ff0"],

                rightBicep: [pose[1].position, pose[3].position, "#0ff"],
                rightForearm: [pose[3].position, pose[5].position, "#00f"]
            };

            return limbs;
        }
        // Imagine how often you'll typo drawLimb as drawLine
        function drawLimb(from, to, color) {
            if (color !== null) {
                ctx.strokeStyle = color;
            }
            ctx.beginPath();
            ctx.moveTo(from.x, from.y);
            ctx.lineTo(to.x, to.y);
            ctx.lineWidth = 2;
            ctx.stroke();
        }

        function drawPose(pose) {

            ctx.clearRect(0, 0, canvas.width, canvas.height);


            // do some points
            pose.forEach((part) => {
                const pos = part.position;
                ctx.fillStyle = "#000";
                ctx.beginPath();
                ctx.arc(pos.x, pos.y, 3, 0, Math.PI * 2, true);
                ctx.fill();
            });

            Object.values(poseAsLimbs(pose)).forEach((limb) => {
                drawLimb(limb[0], limb[1], limb[2]);
            })
        }

        const stream = new PoseStream({
            delay: 10
        });
        stream.start()

        stream.addEventListener('pose', (event) => {
            drawPose(tidiedPoseData(event.data))
        })
    </script>


</body>

</html>