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import imageIdToURI from '../../utilities/imageIdToURI';
import VoxelManager from '../../utilities/VoxelManager';
import { vtkStreamingOpenGLTexture } from '../../RenderingEngine/vtkClasses';
import type {
Metadata,
Point3,
Mat3,
ImageVolumeProps,
IImage,
PixelDataTypedArrayString,
RGB,
IVoxelManager,
} from '../../types';
import cache from '../cache';
import type vtkOpenGLTexture from '@kitware/vtk.js/Rendering/OpenGL/Texture';
export interface vtkStreamingOpenGLTexture extends vtkOpenGLTexture {
setUpdatedFrame: (frame: number) => void;
setVolumeId: (volumeId: string) => void;
releaseGraphicsResources: () => void;
}
/** The base class for volume data. It includes the volume metadata
* and the volume data along with the loading status.
*/
export class ImageVolume {
private _imageIds: string[];
private _imageIdsIndexMap = new Map();
private _imageURIsIndexMap = new Map();
/** volume scalar data 3D or 4D */
protected totalNumFrames: number;
protected cornerstoneImageMetaData = null;
/** Read-only unique identifier for the volume */
readonly volumeId: string;
isPreScaled = false;
/** Dimensions of the volume */
dimensions: Point3;
/** volume direction in world space */
direction: Mat3;
/** volume metadata */
metadata: Metadata;
/** volume origin, Note this is an opinionated origin for the volume */
origin: Point3;
/** Whether preScaling has been performed on the volume */
/** volume scaling parameters if it contains scaled data */
scaling?: {
PT?: {
// @TODO: Do these values exist?
SUVlbmFactor?: number;
SUVbsaFactor?: number;
// accessed in ProbeTool
suvbwToSuvlbm?: number;
suvbwToSuvbsa?: number;
};
};
/** volume spacing in 3d world space */
spacing: Point3;
/** volume number of voxels */
numVoxels: number;
/** volume image data */
imageData?: vtkImageData;
/** open gl texture for the volume */
vtkOpenGLTexture: vtkStreamingOpenGLTexture;
/** load status object for the volume */
loadStatus?: Record<string, unknown>;
/** optional reference volume id if the volume is derived from another volume */
referencedVolumeId?: string;
/** optional reference image ids if the volume is derived from a set of images in the image cache */
referencedImageIds?: string[];
/** whether the metadata for the pixel spacing is not undefined */
hasPixelSpacing: boolean;
/** Property to store additional information */
additionalDetails?: Record<string, unknown>;
/**
* The new volume model which solely relies on the separate image data
* and do not cache the volume data at all
*/
voxelManager?: IVoxelManager<number> | IVoxelManager<RGB>;
dataType?: PixelDataTypedArrayString;
// @deprecated
numTimePoints? = null as number;
numFrames = null as number;
suppressWarnings: boolean;
constructor(props: ImageVolumeProps) {
const {
imageIds,
scaling,
dimensions,
spacing,
origin,
direction,
dataType,
volumeId,
referencedVolumeId,
metadata,
referencedImageIds,
additionalDetails,
voxelManager,
numberOfComponents,
} = props;
Iif (!dataType) {
throw new Error(
'Data type is required, please provide a data type as string such as "Uint8Array", "Float32Array", etc.'
);
}
let { imageData } = props;
this.suppressWarnings = true;
this.imageIds = imageIds;
this.volumeId = volumeId;
this.metadata = metadata;
this.dimensions = dimensions;
this.spacing = spacing;
this.origin = origin;
this.direction = direction;
this.dataType = dataType;
this.vtkOpenGLTexture = vtkStreamingOpenGLTexture.newInstance();
this.vtkOpenGLTexture.setVolumeId(volumeId);
this.voxelManager =
voxelManager ??
VoxelManager.createImageVolumeVoxelManager({
dimensions,
imageIds,
numberOfComponents,
});
this.numVoxels =
this.dimensions[0] * this.dimensions[1] * this.dimensions[2];
Eif (!imageData) {
imageData = vtkImageData.newInstance();
imageData.setDimensions(dimensions);
imageData.setSpacing(spacing);
imageData.setDirection(direction);
imageData.setOrigin(origin);
}
imageData.set(
{
dataType: dataType,
voxelManager: this.voxelManager,
id: volumeId,
numberOfComponents: numberOfComponents || 1,
},
this.suppressWarnings
);
imageData.set(
{
hasScalarVolume: false,
},
this.suppressWarnings
);
this.imageData = imageData;
this.numFrames = this._getNumFrames();
this._reprocessImageIds();
Iif (scaling) {
this.scaling = scaling;
}
if (referencedVolumeId) {
this.referencedVolumeId = referencedVolumeId;
}
if (referencedImageIds) {
this.referencedImageIds = referencedImageIds;
}
Iif (additionalDetails) {
this.additionalDetails = additionalDetails;
}
}
public get sizeInBytes(): number {
return this.voxelManager.sizeInBytes;
}
/** return the image ids for the volume if it is made of separated images */
public get imageIds(): string[] {
return this._imageIds;
}
/** updates the image ids */
public set imageIds(newImageIds: string[]) {
this._imageIds = newImageIds;
this._reprocessImageIds();
}
private _reprocessImageIds() {
this._imageIdsIndexMap.clear();
this._imageURIsIndexMap.clear();
this._imageIds.forEach((imageId, i) => {
const imageURI = imageIdToURI(imageId);
this._imageIdsIndexMap.set(imageId, i);
this._imageURIsIndexMap.set(imageURI, i);
});
}
cancelLoading: () => void;
/** return true if it is a 4D volume or false if it is 3D volume */
public isDynamicVolume(): boolean {
return this.numTimePoints > 1;
}
/**
* return the index of a given imageId
* @param imageId - imageId
* @returns imageId index
*/
public getImageIdIndex(imageId: string): number {
return this._imageIdsIndexMap.get(imageId);
}
public getImageIdByIndex(imageIdIndex: number): string {
return this._imageIds[imageIdIndex];
}
/**
* return the index of a given imageURI
* @param imageId - imageURI
* @returns imageURI index
*/
public getImageURIIndex(imageURI: string): number {
return this._imageURIsIndexMap.get(imageURI);
}
public load(callback?: (...args: unknown[]) => void): void {
// TODO: Implement
}
/**
* destroy the volume and make it unusable
*/
destroy(): void {
// TODO: GPU memory associated with volume is not cleared.
this.imageData.delete();
this.imageData = null;
this.voxelManager.clear();
this.vtkOpenGLTexture.releaseGraphicsResources();
this.vtkOpenGLTexture.delete();
}
public invalidate() {
for (let i = 0; i < this.imageIds.length; i++) {
this.vtkOpenGLTexture.setUpdatedFrame(i);
}
this.imageData.modified();
}
/**
* Updates the internals of the volume to reflect the changes in the
* underlying scalar data. This should be called when the scalar data
* is modified externally
*/
public modified() {
this.imageData.modified();
this.vtkOpenGLTexture.modified();
this.numFrames = this._getNumFrames();
}
public removeFromCache() {
cache.removeVolumeLoadObject(this.volumeId);
}
public getScalarDataLength(): number {
return this.voxelManager.getScalarDataLength();
}
/**
* Returns the number of frames stored in a scalarData object. The number of
* frames is equal to the number of images for 3D volumes or the number of
* frames per time poins for 4D volumes.
* @returns number of frames per volume
*/
private _getNumFrames(): number {
Eif (!this.isDynamicVolume()) {
return this.imageIds.length;
}
return this.numTimePoints;
}
/**
* Converts imageIdIndex into frameIndex which will be the same
* for 3D volumes but different for 4D volumes. The indices are 0 based.
*/
protected imageIdIndexToFrameIndex(imageIdIndex: number): number {
return imageIdIndex % this.numFrames;
}
/**
* Returns an array of all the volume's images as Cornerstone images.
* It iterates over all the imageIds and converts them to Cornerstone images.
*
* @returns An array of Cornerstone images.
*/
public getCornerstoneImages(): IImage[] {
const { imageIds } = this;
return imageIds.map((imageId) => {
return cache.getImage(imageId);
});
}
}
export default ImageVolume;
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