spitfire-plotter/index.html at develop · SpitfirePirates/spitfire-plotter · GitHub

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<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Emulator</title>
    <style>
        body, html {
            padding: 0;
        }
        body {
            margin: 20px;
            background: #ddd;
        }
        canvas {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            border: 3px solid #666;
            background: #fff;
        }
        .actions > div {
            padding: 5px;
            color: #bbb;
        }
        .overlay {
            display: none;
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            right: 0;
            opacity: 0.3;
            background: repeating-linear-gradient(
                    -55deg,
                    #222,
                    #222 30px,
                    #333 30px,
                    #333 60px
            );
        }
        .overlay.active {
            display: block;
        }
        .disconnected {
            display: none;
            position: absolute;
            font-family: sans-serif;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-transform: uppercase;
            border: 6px solid crimson;
            color: crimson;
            padding: 2px 10px;
            font-size: 4em;
            background: #FFF;
        }
        .disconnected.active {
            display: block;
        }
        #wires {
            background: transparent;
        }
    </style>
</head>
<body>
    <canvas id="board" width="1875" height="1100"></canvas>
    <canvas id="wires" width="1875" height="1100"></canvas>
    <div class="overlay active"></div>
    <div class="disconnected active">Disconnected</div>

    <script src="/node_modules/socket.io-client/dist/socket.io.js"></script>
    <script>
        const socket = io('//:3000'),
                position = null,
                stepAmount = 10,
                boardCanvas = document.querySelector('canvas#board'),
                wiresCanvas = document.querySelector('canvas#wires'),
                boardCtx = boardCanvas.getContext('2d'),
                wiresCtx = wiresCanvas.getContext('2d')

        function setCanvasSize() {
            const canvasSizeRatio = boardCanvas.height / boardCanvas.width;

            const canvasHeight = window.innerHeight - 46;
            const canvasWidth = canvasHeight / canvasSizeRatio;

            boardCanvas.style.width = `${canvasWidth}px`;
            boardCanvas.style.height = `${canvasHeight}px`;
            wiresCanvas.style.width = `${canvasWidth}px`;
            wiresCanvas.style.height = `${canvasHeight}px`;
        }

        function clearCanvas() {
            boardCtx.clearRect(0,0,boardCanvas.width,boardCanvas.height)
        }

        window.addEventListener('resize', setCanvasSize);
        setCanvasSize();

        wiresCanvas.width = boardCanvas.width
        wiresCanvas.height = boardCanvas.height
        boardCtx.lineWidth = 3
        boardCtx.strokeStyle = '#3ac11f'
        wiresCtx.strokeStyle = '#aaa'
        wiresCtx.lineWidth = 3
        wiresCtx.setLineDash([3, 3])

        socket.on('disconnect', socket => {
            document.querySelector('.disconnected').classList.add('active')
            document.querySelector('.overlay').classList.add('active')
        })

        let lastPoint = null;

        socket.on('connect', function () {
            clearCanvas()
            document.querySelector('.disconnected').classList.remove('active')
            document.querySelector('.overlay').classList.remove('active')

            getPoints();
        });

        function getPoints() {
            socket.emit('getPoints', { count: 200 }, points => {
                if (lastPoint === null) {
                    lastPoint = points.shift()
                }

                boardCtx.beginPath()
                points.forEach(point => {
                    boardCtx.moveTo(lastPoint.x/4, lastPoint.y/4)
                    boardCtx.lineTo(point.x/4, point.y/4)

                    points.shift()
                    lastPoint = point;
                })
                boardCtx.stroke()
                boardCtx.closePath();

                wiresCtx.clearRect(0, 0, wiresCanvas.width, wiresCanvas.height)
                wiresCtx.beginPath()
                wiresCtx.moveTo(0, 0)
                wiresCtx.lineTo(lastPoint.x/4, lastPoint.y/4)
                wiresCtx.stroke()
                wiresCtx.moveTo(wiresCanvas.width, 0)
                wiresCtx.lineTo(lastPoint.x/4, lastPoint.y/4)
                wiresCtx.stroke()
                wiresCtx.closePath();

                requestAnimationFrame(getPoints)
            });
        }
    </script>
</body>
</html>