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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | import {
Types,
utilities,
BaseVolumeViewport,
StackViewport,
cache,
metaData,
} from '@cornerstonejs/core';
import { Annotation } from '../types';
import { addAnnotation } from '../stateManagement';
import { vec3 } from 'gl-matrix';
function annotationHydration(
viewport: Types.IViewport,
toolName: string,
worldPoints: Types.Point3[],
options?: {
FrameOfReferenceUID?: string;
annotationUID?: string;
}
): Annotation {
const viewReference = viewport.getViewReference();
const { viewPlaneNormal, FrameOfReferenceUID } = viewReference;
const annotation = {
annotationUID: options?.annotationUID || utilities.uuidv4(),
data: {
handles: {
points: worldPoints,
},
},
highlighted: false,
autoGenerated: false,
invalidated: false,
isLocked: false,
isVisible: true,
metadata: {
toolName,
viewPlaneNormal,
FrameOfReferenceUID,
referencedImageId: getReferencedImageId(
viewport,
worldPoints[0],
viewPlaneNormal
),
...options,
},
};
addAnnotation(annotation, viewport.element);
return annotation;
}
function getReferencedImageId(
viewport: Types.IViewport,
worldPos: Types.Point3,
viewPlaneNormal: Types.Point3
): string {
let referencedImageId;
if (viewport instanceof StackViewport) {
referencedImageId = getClosestImageIdForStackViewport(
viewport,
worldPos,
viewPlaneNormal
);
} else if (viewport instanceof BaseVolumeViewport) {
const targetId = getTargetId(viewport);
const volumeId = utilities.getVolumeId(targetId);
const imageVolume = cache.getVolume(volumeId);
referencedImageId = utilities.getClosestImageId(
imageVolume,
worldPos,
viewPlaneNormal
);
} else {
throw new Error(
'getReferencedImageId: viewport must be a StackViewport or BaseVolumeViewport'
);
}
return referencedImageId;
}
function getTargetId(viewport: Types.IViewport): string | undefined {
const targetId = viewport.getReferenceId?.();
if (targetId) {
return targetId;
}
if (viewport instanceof BaseVolumeViewport) {
return `volumeId:${getTargetVolumeId(viewport)}`;
}
throw new Error('getTargetId: viewport must have a getTargetId method');
}
function getTargetVolumeId(viewport: Types.IViewport): string | undefined {
const actorEntries = viewport.getActors();
if (!actorEntries) {
return;
}
return actorEntries.find(
(actorEntry) => actorEntry.actor.getClassName() === 'vtkVolume'
)?.uid;
}
function getClosestImageIdForStackViewport(
viewport: StackViewport,
worldPos: Types.Point3,
viewPlaneNormal: Types.Point3
): string {
const imageIds = viewport.getImageIds();
if (!imageIds || !imageIds.length) {
return;
}
const distanceImagePairs = imageIds.map((imageId) => {
const { imagePositionPatient } = metaData.get('imagePlaneModule', imageId);
const distance = calculateDistanceToImage(
worldPos,
imagePositionPatient,
viewPlaneNormal
);
return { imageId, distance };
});
distanceImagePairs.sort((a, b) => a.distance - b.distance);
return distanceImagePairs[0].imageId;
}
function calculateDistanceToImage(
worldPos: Types.Point3,
ImagePositionPatient: Types.Point3,
viewPlaneNormal: Types.Point3
): number {
const dir = vec3.create();
vec3.sub(dir, worldPos, ImagePositionPatient);
const dot = vec3.dot(dir, viewPlaneNormal);
return Math.abs(dot);
}
export { annotationHydration, getClosestImageIdForStackViewport };
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