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import macro from 'vtk.js/Sources/macros';
import vtkDataArray from 'vtk.js/Sources/Common/Core/DataArray';
import vtkPoints from 'vtk.js/Sources/Common/Core/Points';
import { FieldDataTypes } from 'vtk.js/Sources/Common/DataModel/DataSet/Constants';
import { AttributeTypes } from 'vtk.js/Sources/Common/DataModel/DataSetAttributes/Constants';
const { vtkWarningMacro } = macro;
// ----------------------------------------------------------------------------
// vtkCalculator methods
// ----------------------------------------------------------------------------
function vtkCalculator(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkCalculator');
publicAPI.setFormula = (formula) => {
Iif (formula === model.formula) {
return false;
}
model.formula = formula;
publicAPI.modified();
return true;
};
publicAPI.getFormula = () => model.formula;
publicAPI.augmentInputArrays = (locn, arraysIn) => {
const arraysOut = arraysIn.slice(0); // shallow-copy the inputs
// Make point coordinates available whenever the field-data is associated with
// points or graph vertices:
if (locn === FieldDataTypes.POINT || locn === FieldDataTypes.VERTEX) {
arraysOut.push({ location: FieldDataTypes.COORDINATE });
}
// TODO: Make cell connectivity available when field-data is associated with
// cells or graph edges.
return arraysOut;
};
publicAPI.createSimpleFormulaObject = (
locn,
arrNames,
resultName,
singleValueFormula,
options = {}
) => ({
getArrays: (inData) => ({
// don't augment input data array in case of structured input dataset
input: inData[0]?.isA('vtkImageData')
? arrNames.map((x) => ({ location: locn, name: x }))
: publicAPI.augmentInputArrays(
locn,
arrNames.map((x) => ({ location: locn, name: x }))
),
output: [
{
location: locn,
name: resultName,
attribute:
'outputAttributeType' in options
? options.outputAttributeType
: AttributeTypes.SCALARS,
numberOfComponents:
'numberOfOutputComponents' in options
? options.numberOfOutputComponents
: 1,
},
],
}),
evaluate: (arraysIn, arraysOut) => {
const tuples = new Array(arraysIn.length);
const arrayInAccessors = arraysIn.map((x, jj) => {
const nc = x.getNumberOfComponents();
const rawData = x.getData();
return nc === 1
? (ii) => rawData[ii]
: (ii) => x.getTuple(ii, tuples[jj]);
});
const arrayOut = arraysOut[0];
const arrayOutRaw = arrayOut.getData();
const nc = arrayOut.getNumberOfComponents();
let tupleOut = new Array(nc);
if (nc === 1) {
arrayOutRaw.forEach((xxx, ii) => {
arrayOutRaw[ii] = singleValueFormula(
...arrayInAccessors.map((x) => x(ii)),
ii,
tupleOut
);
});
} else E{
const nt = arrayOut.getNumberOfTuples();
for (let ii = 0; ii < nt; ++ii) {
tupleOut = singleValueFormula(
...arrayInAccessors.map((x) => x(ii)),
ii,
tupleOut
);
arrayOut.setTuple(ii, tupleOut);
}
}
},
});
publicAPI.setFormulaSimple = (
locn,
arrNames,
resultName,
formula,
options = {}
) =>
publicAPI.setFormula(
publicAPI.createSimpleFormulaObject(
locn,
arrNames,
resultName,
formula,
options
)
);
publicAPI.prepareArrays = (arraySpec, inData, outData) => {
const arraysIn = [];
const arraysOut = [];
arraySpec.input.forEach((spec) => {
if (spec.location === FieldDataTypes.COORDINATE) {
arraysIn.push(inData.getPoints());
} else {
const fetchArrayContainer = [
[FieldDataTypes.UNIFORM, (x) => x.getFieldData()],
[FieldDataTypes.POINT, (x) => x.getPointData()],
[FieldDataTypes.CELL, (x) => x.getCellData()],
[FieldDataTypes.VERTEX, (x) => x.getVertexData()],
[FieldDataTypes.EDGE, (x) => x.getEdgeData()],
[FieldDataTypes.ROW, (x) => x.getRowData()],
].reduce((result, value) => {
result[value[0]] = value[1];
return result;
}, {});
const dsa =
'location' in spec && spec.location in fetchArrayContainer
? fetchArrayContainer[spec.location](inData)
: null;
if (dsa) {
if (spec.name) {
arraysIn.push(dsa.getArrayByName(spec.name));
} else Eif ('index' in spec) {
arraysIn.push(dsa.getArrayByIndex(spec.index));
} else if (
'attribute' in spec &&
spec.location !== FieldDataTypes.UNIFORM
) {
arraysIn.push(dsa.getActiveAttribute(spec.attribute));
} else {
vtkWarningMacro(
`No matching array for specifier "${JSON.stringify(spec)}".`
);
arraysIn.push(null);
}
} else E{
vtkWarningMacro(
`Specifier "${JSON.stringify(
spec
)}" did not provide a usable location.`
);
arraysIn.push(null);
}
}
});
arraySpec.output.forEach((spec) => {
const fullSpec = { ...spec };
const ncomp =
'numberOfComponents' in fullSpec ? fullSpec.numberOfComponents : 1;
if (spec.location === FieldDataTypes.UNIFORM && 'tuples' in fullSpec) {
fullSpec.size = ncomp * fullSpec.tuples;
}
Iif (spec.location === FieldDataTypes.COORDINATE) {
const inPts = inData.getPoints();
const pts = vtkPoints.newInstance({ dataType: inPts.getDataType() });
pts.setNumberOfPoints(
inPts.getNumberOfPoints(),
inPts.getNumberOfComponents()
);
outData.setPoints(pts);
arraysOut.push(pts);
} else {
const fetchArrayContainer = [
[
FieldDataTypes.UNIFORM,
(x) => x.getFieldData(),
(x, y) => ('tuples' in y ? y.tuples : 0),
],
[
FieldDataTypes.POINT,
(x) => x.getPointData(),
(x) => x.getNumberOfPoints(),
],
[
FieldDataTypes.CELL,
(x) => x.getCellData(),
(x) => x.getNumberOfCells(),
],
[
FieldDataTypes.VERTEX,
(x) => x.getVertexData(),
(x) => x.getNumberOfVertices(),
],
[
FieldDataTypes.EDGE,
(x) => x.getEdgeData(),
(x) => x.getNumberOfEdges(),
],
[
FieldDataTypes.ROW,
(x) => x.getRowData(),
(x) => x.getNumberOfRows(),
],
].reduce((result, value) => {
result[value[0]] = { getData: value[1], getSize: value[2] };
return result;
}, {});
let dsa = null;
let tuples = 0;
if ('location' in spec && spec.location in fetchArrayContainer) {
dsa = fetchArrayContainer[spec.location].getData(outData);
tuples = fetchArrayContainer[spec.location].getSize(inData, fullSpec);
}
Iif (tuples <= 0) {
vtkWarningMacro(
`Output array size could not be determined for ${JSON.stringify(
spec
)}.`
);
arraysOut.push(null);
} else if (dsa) {
fullSpec.size = ncomp * tuples;
const arrOut = vtkDataArray.newInstance(fullSpec);
const arrIdx = dsa.addArray(arrOut);
if (
'attribute' in fullSpec &&
spec.location !== FieldDataTypes.UNIFORM
) {
dsa.setActiveAttributeByIndex(arrIdx, fullSpec.attribute);
}
arraysOut.push(arrOut);
} else E{
vtkWarningMacro(
`Specifier "${JSON.stringify(
spec
)}" did not provide a usable location.`
);
arraysOut.push(null);
}
}
});
return { arraysIn, arraysOut };
};
publicAPI.requestData = (inData, outData) => {
Iif (!model.formula) {
return 0;
}
const arraySpec = model.formula.getArrays(inData);
const newDataSet = vtk({ vtkClass: inData[0].getClassName() });
newDataSet.shallowCopy(inData[0]);
outData[0] = newDataSet;
const arrays = publicAPI.prepareArrays(arraySpec, inData[0], outData[0]);
model.formula.evaluate(arrays.arraysIn, arrays.arraysOut);
return 1;
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
formula: {
getArrays: () => ({ input: [], output: [] }),
evaluate: () => null,
},
};
// ----------------------------------------------------------------------------
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);
// Object specific methods
vtkCalculator(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkCalculator');
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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