/
headless.html
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/
headless.html
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<script>
window.headlessK3D = true;
</script>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>K3D headless engine</title>
<style>
body, html {
margin: 0;
padding: 0;
overflow: hidden;
}
#canvasTarget {
width: 100%;
height: 100%;
position: absolute;
}
</style>
<script id='requirejs' src="require.js"></script>
<script id='k3d' src="standalone.js"></script>
</head>
<body>
<div id="canvasTarget"></div>
<script>
function stringToArrayBuffer(str) {
var buf = new ArrayBuffer(str.length);
var bufView = new Uint8Array(buf);
for (var i = 0, strLen = str.length; i < strLen; i++) {
bufView[i] = str.charCodeAt(i);
}
return buf;
}
var K3DInstance, pingFailed = 0;
window.refreshed = false;
require(['k3d'], function (lib) {
try {
K3DInstance = new lib.K3D(
lib.ThreeJsProvider,
document.getElementById('canvasTarget'),
{}
);
} catch (e) {
console.log(e);
return;
}
setInterval(function () {
var req = new XMLHttpRequest();
req.open('GET', '/ping', true);
req.onerror = function (e) {
pingFailed++;
if (pingFailed > 5) {
window.close();
}
};
req.onload = function (e) {
pingFailed = 0;
};
req.send(null);
}, 5000);
window.k3dRefresh = function () {
var req = new XMLHttpRequest();
window.refreshed = false;
req.overrideMimeType('text/plain; charset=x-user-defined');
req.open('POST', '/', false); //synchronous
req.send(null);
if (req.status == 200) {
var data = K3DInstance.msgpack.decode(
new Uint8Array(stringToArrayBuffer(req.response)),
{codec: K3DInstance.MsgpackCodec}
);
var map = {
cameraAutoFit: "setCameraAutoFit",
lighting: "setDirectionalLightingIntensity",
time: "setTime",
gridAutoFit: "setGridAutoFit",
gridVisible: "setGridVisible",
gridColor: "setGridColor",
depthPeels: "setDepthPeels",
fpsMeter: "setFpsMeter",
fps: "setFps",
screenshotScale: "setScreenshotScale",
// voxel_paint_color: "setVoxelPaintColor",
clearColor: "setClearColor",
grid: "setGrid",
auto_rendering: "setAutoRendering",
camera: "setCamera",
cameraAnimation: "setCameraAnimation",
clippingPlanes: "setClippingPlanes",
// object_ids: "onObjectsListChange",
menuVisibility: "setMenuVisibility",
colorbarObjectId: "setColorMapLegend",
// colorbar_scientific: "setColorbarScientific",
// rendering_steps: "setRenderingSteps",
axes: "setAxes",
cameraNoRotate: "setCameraLock",
cameraNoZoom: "setCameraLock",
cameraNoPan: "setCameraLock",
cameraRotateSpeed: "setCameraSpeeds",
cameraZoomSpeed: "setCameraSpeeds",
cameraPanSpeed: "setCameraSpeeds",
cameraFov: "setCameraFOV",
cameraDampingFactor: "setCameraDampingFactor",
axesHelper: "setAxesHelper",
snapshot_type: "setSnapshotType",
name: "setName",
mode: "setViewMode",
cameraMode: "setCameraMode",
// manipulate_mode: "setManipulateMode"
};
Object.keys(data.plot_diff).forEach(function (k) {
if (map[k]) {
K3DInstance[map[k]](data.plot_diff[k]);
} else {
K3DInstance.parameters[k] = data.plot_diff[k];
}
});
let promises = [];
Object.keys(data.objects_diff).forEach(function (k) {
let diff = data.objects_diff[k];
if (diff === null) {
K3DInstance.removeObject(k);
return;
}
let json = K3DInstance.getWorld().ObjectsListJson[diff.id] || {};
let load = Object.keys(json).length === 0;
Object.keys(diff).forEach((k) => {
json[k] = diff[k] = K3DInstance.serialize.deserialize(diff[k]);
});
if (load) {
promises.push(K3DInstance.load({objects: [json]}));
} else {
promises.push(K3DInstance.reload(json, diff));
}
});
if (promises.length > 0) {
Promise.all(promises).then(function () {
window.refreshed = true;
}).catch(function(error) {
console.error(error);
});
} else {
window.refreshed = true;
}
} else {
console.error('k3dRefresh', req.response);
}
}
});
</script>
</body>
</html>