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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 | 88x 83x 83x 83x 83x 85x 85x 85x 85x 85x 85x 5x 5x 5x 5x 5x | import {
StackViewport,
VolumeViewport,
Types,
utilities as csUtils,
} from '@cornerstonejs/core';
import filterAnnotationsWithinSlice from './filterAnnotationsWithinSlice';
import { Annotations } from '../../types';
/**
* Given the viewport and the annotations, it filters the annotations array and only
* return those annotation that should be displayed on the viewport
* @param annotations - Annotations
* @returns A filtered version of the annotations.
*/
export default function filterAnnotationsForDisplay(
viewport: Types.IViewport,
annotations: Annotations
): Annotations {
if (viewport instanceof StackViewport) {
// 1. Get the currently displayed imageId from the StackViewport
const imageId = viewport.getCurrentImageId();
// 2. remove the dataLoader scheme since it might be an annotation that was
// created on the volumeViewport initially and has the volumeLoader scheme
// but shares the same imageId
const colonIndex = imageId.indexOf(':');
const imageURI = imageId.substring(colonIndex + 1);
// 3. Filter annotation in the frame of reference by the referenced image ID property
// Note: With the current implementation drawing on the stack (PT stack) will not
// show the annotation on a volume that does not share the same imageURIs (CT Volume),
// and we don't have a proper way to check distance either since a stack can be
// composed of multiple unrelated images
return annotations.filter((annotation) => {
Iif (!annotation.isVisible) {
return false;
}
const imageId = annotation.metadata.referencedImageId;
Iif (imageId === undefined) {
// This annotation was not drawn on a non-coplanar reformat, and such does
// note have a referenced imageId.
return false;
}
const colonIndex = imageId.indexOf(':');
const referenceImageURI = imageId.substring(colonIndex + 1);
return referenceImageURI === imageURI;
});
} else Eif (viewport instanceof VolumeViewport) {
const camera = viewport.getCamera();
const { spacingInNormalDirection } =
csUtils.getTargetVolumeAndSpacingInNormalDir(viewport, camera);
// Get data with same normal and within the same slice
return filterAnnotationsWithinSlice(
annotations,
camera,
spacingInNormalDirection
);
} else {
throw new Error(`Viewport Type ${viewport.type} not supported`);
}
}
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