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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 | 1x 128x 128x 64x 64x 64x 1x 11x 11x 1x 140x 140x 140x 140x 140x 140x 140x 10x 140x 140x | import vtkDataArray from '@kitware/vtk.js/Common/Core/DataArray';
import vtkImageData from '@kitware/vtk.js/Common/DataModel/ImageData';
import {
BaseVolumeViewport,
getEnabledElement,
Enums,
getEnabledElementByIds,
cache,
utilities,
Types,
} from '@cornerstonejs/core';
import { getToolGroupForViewport } from '../../store/ToolGroupManager';
import Representations from '../../enums/SegmentationRepresentations';
import * as SegmentationState from '../../stateManagement/segmentation/segmentationState';
import { LabelmapSegmentationDataStack } from '../../types/LabelmapTypes';
import { isVolumeSegmentation } from '../../tools/segmentation/strategies/utils/stackVolumeCheck';
import triggerSegmentationRender from '../../utilities/segmentation/triggerSegmentationRender';
const enable = function (element: HTMLDivElement): void {
const { viewport } = getEnabledElement(element);
if (viewport instanceof BaseVolumeViewport) {
return;
}
element.addEventListener(
Enums.Events.STACK_NEW_IMAGE,
_imageChangeEventListener as EventListener
);
// this listener handles the segmentation modifications
element.addEventListener(
Enums.Events.IMAGE_RENDERED,
_imageChangeEventListener as EventListener
);
};
const disable = function (element: HTMLDivElement): void {
element.removeEventListener(
Enums.Events.STACK_NEW_IMAGE,
_imageChangeEventListener as EventListener
);
element.removeEventListener(
Enums.Events.IMAGE_RENDERED,
_imageChangeEventListener as EventListener
);
};
const perToolGroupManualTriggers = new Map();
/**
* When the image is rendered, check what tools can be rendered for this element.
*
* - First we get all tools which are active, passive or enabled on the element.
* - If any of these tools have a `renderAnnotation` method, then we render them.
* - Note that these tools don't necessarily have to be instances of `AnnotationTool`,
* Any tool may register a `renderAnnotation` method (e.g. a tool that displays an overlay).
*
* @param evt - The normalized IMAGE_RENDERED event.
*/
function _imageChangeEventListener(evt) {
const eventData = evt.detail;
const { viewportId, renderingEngineId } = eventData;
const { viewport } = getEnabledElementByIds(
viewportId,
renderingEngineId
) as { viewport: Types.IStackViewport };
const toolGroup = getToolGroupForViewport(viewportId, renderingEngineId);
Iif (!toolGroup) {
return;
}
let toolGroupSegmentationRepresentations =
SegmentationState.getSegmentationRepresentations(toolGroup.id) || [];
toolGroupSegmentationRepresentations =
toolGroupSegmentationRepresentations.filter(
(representation) => representation.type === Representations.Labelmap
);
Eif (!toolGroupSegmentationRepresentations?.length) {
return;
}
const segmentationRepresentations = {};
toolGroupSegmentationRepresentations.forEach((representation) => {
const segmentation = SegmentationState.getSegmentation(
representation.segmentationId
);
if (!segmentation || !segmentation.representationData?.LABELMAP) {
return;
}
const labelmapData = segmentation.representationData.LABELMAP;
if (isVolumeSegmentation(labelmapData, viewport)) {
return;
}
const { imageIdReferenceMap } =
labelmapData as LabelmapSegmentationDataStack;
segmentationRepresentations[representation.segmentationRepresentationUID] =
{
imageIdReferenceMap,
};
});
const representationList = Object.keys(segmentationRepresentations);
const currentImageId = viewport.getCurrentImageId();
const actors = viewport.getActors();
const segmentationFound = actors.find((actor) => {
if (!representationList.includes(actor.uid)) {
return false;
}
return true;
});
if (!segmentationFound) {
// If the segmentation is not found, it could be because of some special cases
// where we are in the process of updating the volume conversion to a stack while
// the data is still coming in. In such situations, we should trigger the render
// to ensure that the segmentation actors are created, even if the data arrives late.
if (!perToolGroupManualTriggers.has(toolGroup.id)) {
perToolGroupManualTriggers.set(toolGroup.id, true);
triggerSegmentationRender(toolGroup.id);
}
// we should return here, since there is no segmentation actor to update
// we will hit this function later on after the actor is created
return;
}
actors.forEach((actor) => {
if (!representationList.includes(actor.uid)) {
return;
}
const segmentationActor = actor.actor;
const { imageIdReferenceMap } = segmentationRepresentations[actor.uid];
const derivedImageId = imageIdReferenceMap.get(currentImageId);
const segmentationImageData = segmentationActor.getMapper().getInputData();
if (!derivedImageId) {
// this means that this slice doesn't have a segmentation for this representation
// this can be a case where the segmentation was added to certain slices only
// so we can keep the actor but empty out the imageData
if (segmentationImageData.setDerivedImage) {
// If the image data has a set derived image, then it should be called
// to update any vtk or actor data associated with it. In this case, null
// is used to clear the data. THis allows intercepting/alternative
// to vtk calls. Eventually the vtk version should also use this.
segmentationImageData.setDerivedImage(null);
return;
}
// This is the vtk version of the clearing out the image data, and fails
// to work for non scalar image data.
const scalarArray = vtkDataArray.newInstance({
name: 'Pixels',
numberOfComponents: 1,
values: new Uint8Array(segmentationImageData.getNumberOfPoints()),
});
const imageData = vtkImageData.newInstance();
imageData.getPointData().setScalars(scalarArray);
segmentationActor.getMapper().setInputData(imageData);
return;
}
const derivedImage = cache.getImage(derivedImageId);
const { dimensions, spacing, direction } =
viewport.getImageDataMetadata(derivedImage);
const currentImage =
cache.getImage(currentImageId) ||
({
imageId: currentImageId,
} as Types.IImage);
const { origin: currentOrigin } =
viewport.getImageDataMetadata(currentImage);
// IMPORTANT: We need to make sure that the origin of the segmentation
// is the same as the current image origin. This is because due to some
// floating point precision issues, when coming from volume to stack
// the origin of the segmentation can be slightly different from the
// current image origin. This can cause the segmentation to be rendered
// in the wrong location.
// Todo: This will not work for segmentations that are not in the same frame
// of reference or derived from the same image. This can happen when we have
// a segmentation that happens to exist in the same space as the image but is
// not derived from it. We need to find a way to handle this case, but don't think
// it makes sense to do it for the stack viewport, as the volume viewport is designed to handle this case.
const originToUse = currentOrigin;
segmentationImageData.setOrigin(originToUse);
segmentationImageData.modified();
if (
segmentationImageData.getDimensions()[0] !== dimensions[0] ||
segmentationImageData.getDimensions()[1] !== dimensions[1]
) {
// IMPORTANT: Not sure why we can't just update the dimensions
// and the orientation of the image data and then call modified
// I tried calling modified on everything, but seems like we should remove
// and add the actor again below
viewport.removeActors([actor.uid]);
viewport.addImages(
[
{
imageId: derivedImageId,
actorUID: actor.uid,
callback: ({ imageActor }) => {
const scalarArray = vtkDataArray.newInstance({
name: 'Pixels',
numberOfComponents: 1,
values: [...derivedImage.getPixelData()],
});
const imageData = vtkImageData.newInstance();
imageData.setDimensions(dimensions[0], dimensions[1], 1);
imageData.setSpacing(spacing);
imageData.setDirection(direction);
imageData.setOrigin(originToUse);
imageData.getPointData().setScalars(scalarArray);
imageActor.getMapper().setInputData(imageData);
},
},
],
true,
false
);
triggerSegmentationRender(toolGroup.id);
return;
}
if (segmentationImageData.setDerivedImage) {
// Update the derived image data, whether vtk or other as appropriate
// to the actor(s) displaying the data.
segmentationImageData.setDerivedImage(derivedImage);
} else {
// TODO - use setDerivedImage for this functionality
utilities.updateVTKImageDataWithCornerstoneImage(
segmentationImageData,
derivedImage
);
}
viewport.render();
// This is put here to make sure that the segmentation is rendered
// for the initial image as well after that we don't need it since
// stack new image is called when changing slices
if (evt.type === Enums.Events.IMAGE_RENDERED) {
// unsubscribe after the initial render
viewport.element.removeEventListener(
Enums.Events.IMAGE_RENDERED,
_imageChangeEventListener as EventListener
);
}
});
}
export default {
enable,
disable,
};
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