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 | 428x 428x 428x | import type { Types as ToolsTypes } from '@cornerstonejs/tools';
import { Enums, segmentation, utilities } from '@cornerstonejs/tools';
type RepresentationsData = ToolsTypes.RepresentationsData;
const { getSegmentation } = segmentation.state;
const { validateLabelmap } = utilities.segmentation;
// Map of conversion paths between source and target representations
// You should read it as "source" -> "targets"
const conversionPaths = new Map([
[
Enums.SegmentationRepresentations.Labelmap,
new Set([
Enums.SegmentationRepresentations.Surface,
Enums.SegmentationRepresentations.Contour,
]),
],
[
Enums.SegmentationRepresentations.Contour,
new Set([
Enums.SegmentationRepresentations.Labelmap,
Enums.SegmentationRepresentations.Surface,
]),
],
[
Enums.SegmentationRepresentations.Surface,
new Set([Enums.SegmentationRepresentations.Labelmap]),
],
]);
/**
* Determines whether the requested representation can be computed, based on
* the existing representation types and available conversion paths.
* This is used in the labelmapDisplay and surfaceDisplay logic if the
* requested representation is not available whether we can use the existing
* representation to compute the requested representation. You can checkout the polySeg
* examples to see how this is used polyDataActorManipulationTools and others
*
* @param segmentationId - The id of the segmentation
* @param representationType - The type of the representation to compute
* @returns true if the representation can be computed, false otherwise
*/
function canComputeRequestedRepresentation(
segmentationId: string,
representationType: Enums.SegmentationRepresentations
): boolean {
const { representationData } = getSegmentation(segmentationId);
const existingRepresentationTypes =
getExistingRepresentationTypes(representationData);
return existingRepresentationTypes.some((existingRepresentationType) =>
canConvertFromTo(existingRepresentationType, representationType)
);
}
/**
* Retrieves the existing representation types for the given representationData
* by verifying the validity of each representation type.
*
* @param representationData - The representation data
* @returns supportedTypes - An array of valid representation types
*/
function getExistingRepresentationTypes(
representationData: RepresentationsData
): string[] {
const supportedTypes: string[] = [];
Object.keys(representationData).forEach((representationType) => {
const representationTypeData = representationData[representationType];
let validateFn;
switch (representationType) {
case Enums.SegmentationRepresentations.Labelmap:
validateFn = validateLabelmap.validate;
break;
// Todo: add validation for other representation types
}
if (validateFn) {
try {
validateFn(representationTypeData);
supportedTypes.push(representationType);
} catch (error) {
console.warn(
`Validation failed for labelmap of type ${representationType}`
);
}
} else {
supportedTypes.push(representationType);
}
});
return supportedTypes;
}
async function canConvertFromTo(fromRepresentationType, toRepresentationType) {
return (
conversionPaths.get(fromRepresentationType)?.has(toRepresentationType) ||
false
);
}
export { canComputeRequestedRepresentation };
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