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| 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 | 1x | import { PlanarFreehandContourSegmentationTool } from '../../../../../tools';
import { addAnnotation } from '../../../../annotation/annotationState';
import { RawContourData } from '../contourComputationStrategies';
import { utilities, type Types } from '@cornerstonejs/core';
/**
* Creates and adds contour segmentations from a clipped surface.
*
* @param rawContourData - The raw contour data.
* @param viewport - The viewport.
* @param segmentationId - The segmentation ID.
*/
export function createAndAddContourSegmentationsFromClippedSurfaces(
rawContourData: RawContourData,
viewport: Types.IViewport,
segmentationId: string
) {
const annotationUIDsMap = new Map<number, Set<string>>();
for (const [segmentIndex, contoursData] of rawContourData) {
for (const contourData of contoursData) {
const { points } = contourData;
const { lineSegments, linesNumberOfPoints } =
_extractLineSegments(contourData);
// There may be a few lines as the surface might not be closed and could have holes in it.
// Currently, we simply render the generated contour as empty fill to indicate
// the presence of holes. However, filling the proper area with
// fillAlpha requires further work.
for (let i = 0; i < lineSegments.length; i++) {
const line = lineSegments[i];
const polyline = [];
for (let j = 0; j < linesNumberOfPoints[i]; j++) {
const pointIndex = line[j];
polyline.push([
points[3 * pointIndex],
points[3 * pointIndex + 1],
points[3 * pointIndex + 2],
]);
}
if (polyline.length < 3) {
continue;
}
const contourSegmentationAnnotation = {
annotationUID: utilities.uuidv4(),
data: {
contour: {
closed: true,
polyline,
},
segmentation: {
segmentationId,
segmentIndex,
},
handles: {},
},
handles: {},
highlighted: false,
autoGenerated: false,
invalidated: false,
isLocked: false,
isVisible: true,
metadata: {
toolName: PlanarFreehandContourSegmentationTool.toolName,
...viewport.getViewReference(),
},
};
addAnnotation(contourSegmentationAnnotation, viewport.element);
const currentSet = annotationUIDsMap.get(segmentIndex) || new Set();
currentSet.add(contourSegmentationAnnotation.annotationUID);
annotationUIDsMap.set(segmentIndex, currentSet);
}
}
}
return annotationUIDsMap;
}
const _extractLineSegments = (contourData) => {
const { numberOfCells, lines } = contourData;
const lineSegments = [];
const linesNumberOfPoints = [];
for (let i = 0; i < lines.length; ) {
const pointsInLine = lines[i];
linesNumberOfPoints.push(pointsInLine);
lineSegments.push(lines.slice(i + 1, i + pointsInLine + 1));
i += pointsInLine + 1;
if (lineSegments.length === numberOfCells) {
break;
}
}
return { lineSegments, linesNumberOfPoints };
};
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