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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 | 78x 702x 78x 78x 78x 78x 156x 78x 78x 78x 22x 78x 78x 78x 78x 2x 78x 156x 78x 19x 78x 56x 78x 78x 1x 56x 56x 56x | import vtkVolume from '@kitware/vtk.js/Rendering/Core/Volume';
import { VolumeActor } from './../../types/IActor';
import { VoiModifiedEventDetail } from './../../types/EventTypes';
import { loadVolume } from '../../loaders/volumeLoader';
import createVolumeMapper from './createVolumeMapper';
import BlendModes from '../../enums/BlendModes';
import { triggerEvent } from '../../utilities';
import { Events } from '../../enums';
import setDefaultVolumeVOI from './setDefaultVolumeVOI';
interface createVolumeActorInterface {
volumeId: string;
callback?: ({
volumeActor,
volumeId,
}: {
volumeActor: VolumeActor;
volumeId: string;
}) => void;
blendMode?: BlendModes;
}
/**
* Given a volumeId, it creates a vtk volume actor and returns it. If
* callback is provided, it will be called with the volume actor and the
* volumeId. If blendMode is provided, it will be set on the volume actor.
*
* @param props - createVolumeActorInterface
* @returns A promise that resolves to a VolumeActor.
*/
async function createVolumeActor(
props: createVolumeActorInterface,
element: HTMLDivElement,
viewportId: string,
suppressEvents = false,
use16BitTexture = false
): Promise<VolumeActor> {
const { volumeId, callback, blendMode } = props;
const imageVolumeE = await loadVolume(volumeId);
if (!imageVolume) {
throw new Error(
`imageVolume with id: ${imageVolume.volumeId} does not exist`
);
}
const { imageData, vtkOpenGLTexture } = imageVolume;
const volumeMapper = createVolumeMapper(imageData, vtkOpenGLTexture);
if (blendMode) {
volumeMapper.setBlendMode(blendMode);
}
const volumeActor = vtkVolume.newInstance();
volumeActor.setMapper(volumeMapper);
const numberOfComponents = imageData
.getPointData()
.getScalars()
.getNumberOfComponents();
if (numberOfComponents === 3) {
volumeActor.getProperty().setIndependentComponents(false);
}
// If the volume is composed of imageIds, we can apply a default VOI based
// on either the metadata or the min/max of the middle slice. Example of other
// types of volumes which might not be composed of imageIds would be e.g., nrrd, nifti
E// format volumes
if (imageVolume.imageIds) {
await setDefaultVolumeVOI(volumeActor, imageVolume, use16BitTexture);
}
if (callback) {
callback({ volumeActor, volumeId });
}
if (!suppressEvents) {
triggerVOIModified(element, viewportId, volumeActor, volumeId);
}
return volumeActor;
}
function triggerVOIModified(
element: HTMLDivElement,
viewportId: string,
volumeActor: VolumeActor,
volumeId: string
) {
const voiRange = volumeActor
.getProperty()
.getRGBTransferFunction(0)
.getRange();
const voiModifiedEventDetail: VoiModifiedEventDetail = {
viewportId,
range: {
lower: voiRange[0],
upper: voiRange[1],
},
volumeId,
};
triggerEvent(element, Events.VOI_MODIFIED, voiModifiedEventDetail);
}
export default createVolumeActor;
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