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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>PPTK test page</title>
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<script type="module" defer>
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import * as pptk from "../../src";
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let canvas = document.getElementById("canvas");
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let zoomState = null;
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pptk.attachCanvas(canvas, {
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onResize: draw
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});
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pptk.attachPannable(canvas, {
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preventDefault: true,
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center: () => [canvas.width / 2, canvas.height / 2],
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onUpdate: (state) => {
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zoomState = state;
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draw(canvas);
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},
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});
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let ctx = canvas.getContext("2d");
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function draw(canvas) {
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if (!zoomState) return;
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ctx.fillStyle = "gray";
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.beginPath();
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ctx.ellipse(
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...zoomState.get(0, 0),
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5 * zoomState.scale,
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5 * zoomState.scale,
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0,
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Math.PI * 2,
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0
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);
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ctx.fillStyle = "white";
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ctx.fill();
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}
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</script>
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<style>
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body {
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margin: 0;
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width: 100vw;
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width: 100dvw;
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height: 100vh;
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height: 100dvh;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.container {
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overflow: hidden;
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width: 80vw;
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height: 80vh;
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background: black;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<canvas id="canvas">
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This test requires canvas support
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</canvas>
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</div>
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</body>
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</html>
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