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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import macro from 'vtk.js/Sources/macros';
import vtkImageData from 'vtk.js/Sources/Common/DataModel/ImageData';
import vtkDataArray from 'vtk.js/Sources/Common/Core/DataArray';
const { vtkErrorMacro } = macro;
// ----------------------------------------------------------------------------
// vtkImageSliceFilter methods
// ----------------------------------------------------------------------------
function vtkImageSliceFilter(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkImageSliceFilter');
publicAPI.requestData = (inData, outData) => {
// implement requestData
const input = inData[0];
if (!input) {
vtkErrorMacro('Invalid or missing input');
return;
}
const scalars = input.getPointData().getScalars();
if (!scalars) {
vtkErrorMacro('No scalars from input');
return;
}
const datasetDefinition = input.get('extent', 'spacing', 'origin');
datasetDefinition.extent[4] = model.sliceIndex;
datasetDefinition.extent[5] = datasetDefinition.extent[4];
const numberOfComponents = scalars.getNumberOfComponents();
const sliceSize =
(datasetDefinition.extent[1] - datasetDefinition.extent[0] + 1) *
(datasetDefinition.extent[3] - datasetDefinition.extent[2] + 1) *
numberOfComponents;
const offset = sliceSize * model.sliceIndex;
const sliceRawArray = scalars.getData().slice(offset, offset + sliceSize);
const sliceArray = vtkDataArray.newInstance({
name: scalars.getName(),
numberOfComponents,
values: sliceRawArray,
});
const output = vtkImageData.newInstance(datasetDefinition);
output.getPointData().setScalars(sliceArray);
outData[0] = output;
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
sliceIndex: 0,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Make this a VTK object
macro.obj(publicAPI, model);
// Also make it an algorithm with one input and one output
macro.algo(publicAPI, model, 1, 1);
macro.setGet(publicAPI, model, ['sliceIndex', 'orientation']);
// Object specific methods
vtkImageSliceFilter(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkImageSliceFilter');
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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