Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | 1x 1x 1x | import macro from 'vtk.js/Sources/macros';
import DataAccessHelper from 'vtk.js/Sources/IO/Core/DataAccessHelper';
import vtkHttpDataSetReader from 'vtk.js/Sources/IO/Core/HttpDataSetReader';
// Enable several sources for DataAccessHelper
import 'vtk.js/Sources/IO/Core/DataAccessHelper/LiteHttpDataAccessHelper'; // Just need HTTP
// import 'vtk.js/Sources/IO/Core/DataAccessHelper/HttpDataAccessHelper'; // HTTP + gz
// import 'vtk.js/Sources/IO/Core/DataAccessHelper/HtmlDataAccessHelper'; // html + base64 + zip
// import 'vtk.js/Sources/IO/Core/DataAccessHelper/JSZipDataAccessHelper'; // zip
const { vtkErrorMacro } = macro;
// ----------------------------------------------------------------------------
// vtkHttpDataSetLODsLoader methods
// ----------------------------------------------------------------------------
function vtkHttpDataSetLODsLoader(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkHttpDataSetLODsLoader');
const internal = {
downloadStack: [],
};
//--------------------------------------------------------------------------
publicAPI.startDownloads = () => {
if (!model.mapper) {
vtkErrorMacro('Mapper was not set.');
return;
}
if (!model.files || model.files.length === 0) {
vtkErrorMacro('No files set.');
return;
}
let baseUrl = model.baseUrl;
if (baseUrl && !baseUrl.endsWith('/')) {
baseUrl += '/';
}
// Create the download stack
internal.downloadStack = [];
model.files.forEach((file) =>
internal.downloadStack.push(`${baseUrl}${file}`)
);
const downloadNextSource = () => {
const url = internal.downloadStack.shift();
const nextSource = vtkHttpDataSetReader.newInstance({
dataAccessHelper: DataAccessHelper.get('http'),
});
model.currentSource = nextSource;
const options = {
compression: 'zip',
loadData: true,
fullpath: true,
};
nextSource.setUrl(url, options).then(() => {
model.mapper.setInputConnection(nextSource.getOutputPort());
if (model.sceneItem) {
// Apply settings to the new source
const settings = model.sceneItem.defaultSettings;
if (settings.mapper) {
if (settings.mapper.colorByArrayName) {
nextSource.enableArray(
settings.mapper.colorByArrayName,
settings.mapper.colorByArrayName
);
}
}
model.sceneItem.source = nextSource;
}
if (model.stepFinishedCallback) {
// In clients like paraview glance, the callback might
// involve setting the current source on a proxy
model.stepFinishedCallback();
}
if (internal.downloadStack.length !== 0) {
setTimeout(downloadNextSource, model.waitTimeBetweenDownloads);
}
});
};
setTimeout(downloadNextSource, model.waitTimeToStart);
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
baseUrl: '',
// The currentSource is set internally to the most recently
// created source. It might be useful to access it in a callback
// via 'getCurrentSource'.
currentSource: null,
files: [],
mapper: null,
sceneItem: null,
stepFinishedCallback: null,
// These are in milliseconds
waitTimeToStart: 4000,
waitTimeBetweenDownloads: 0,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
macro.obj(publicAPI, model);
// Create get-set macros
macro.setGet(publicAPI, model, [
'baseUrl',
'files',
'mapper',
'sceneItem',
'stepFinishedCallback',
'waitTimeToStart',
'waitTimeBetweenDownloads',
]);
macro.get(publicAPI, model, ['currentSource']);
// Object specific methods
vtkHttpDataSetLODsLoader(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(
extend,
'vtkHttpDataSetLODsLoader'
);
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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