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 | import type {
ContourSegmentationAnnotation,
ContourSegmentationData,
} from '../../../types';
import { getSegmentation } from '../getSegmentation';
import { convertContourPolylineToCanvasSpace } from '../../../utilities/contourSegmentation';
import {
getViewportsAssociatedToSegmentation,
getViewportWithMatchingViewPlaneNormal,
} from './getViewportAssociatedToSegmentation';
import { getPolylinesMap } from './getPolylineMap';
import { getAnnotation } from '../../annotation/annotationState';
/**
* Extracts segment polylines from a segmentation and converts them to canvas space coordinates.
* This function retrieves all contour annotations for a specific segment and transforms their
* world coordinates to canvas coordinates for rendering or processing.
*
* @param segmentationId - The unique identifier of the segmentation
* @param segmentIndex - The index of the segment within the segmentation
* @returns A map of annotation UIDs to their canvas space polylines, or undefined if extraction fails
*/
export function extractSegmentPolylines(
segmentationId: string,
segmentIndex: number
) {
const viewports = getViewportsAssociatedToSegmentation(segmentationId);
const segmentation = getSegmentation(segmentationId);
if (!segmentation) {
return;
}
if (!segmentation.representationData.Contour) {
return;
}
const contourRepresentationData = segmentation.representationData
.Contour as ContourSegmentationData;
const { annotationUIDsMap } = contourRepresentationData;
if (!annotationUIDsMap) {
return;
}
if (!annotationUIDsMap.get(segmentIndex)) {
return;
}
const polyLinesMap = getPolylinesMap(contourRepresentationData, segmentIndex);
if (!polyLinesMap) {
return;
}
const keys = Array.from(polyLinesMap?.keys());
const polylinesCanvasMap = new Map();
for (const key of keys) {
const annotation = getAnnotation(key) as ContourSegmentationAnnotation;
const viewport = getViewportWithMatchingViewPlaneNormal(
viewports,
annotation
);
polylinesCanvasMap.set(
key,
convertContourPolylineToCanvasSpace(polyLinesMap.get(key), viewport)
);
}
return polylinesCanvasMap;
}
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