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ActorRenderMode,
Enums,
VolumeViewport,
type Types,
} from '@cornerstonejs/core';
import { vec3 } from 'gl-matrix';
import type { Segmentation } from '../../../types/SegmentationStateTypes';
import { getLabelmaps } from '../labelmapModel/labelmapLayerStore';
const DIRECTION_ALIGNMENT_TOLERANCE = 0.999;
const MINIMUM_SLAB_THICKNESS = 0.1;
const SLAB_THICKNESS_EPSILON = 1e-3;
export const LABELMAP_IMAGE_MAPPER_URL_PARAM = 'labelmapImageMapper';
export type VolumeViewportLabelmapImageMapperState = {
key: string;
sliceIndex: number;
supported: boolean;
};
type ViewportLabelmapImageMapperCompatibilityViewport = Types.IViewport & {
getCamera?: () => Pick<Types.ICamera, 'viewPlaneNormal' | 'viewUp'>;
getCurrentImageIdIndex?: () => number;
getDisplaySetRenderMode?: (
displaySetId: string
) => Types.ActorRenderMode | string | undefined;
getDisplaySetRole?: (
displaySetId: string
) => 'source' | 'overlay' | undefined;
getDisplaySetPresentation?: (dataId: string) => {
blendMode?: Enums.BlendModes;
slabThickness?: number;
};
getDefaultActor?: () =>
| (Types.ActorEntry & {
actorMapper?: {
actor?: {
getMapper?: () => {
getBlendMode?: () => Enums.BlendModes;
getSlabThickness?: () => number;
};
};
mapper?: {
getBlendMode?: () => Enums.BlendModes;
getSlabThickness?: () => number;
};
renderMode?: Types.ActorRenderMode;
};
})
| undefined;
getSliceViewInfo?: () => {
sliceIndex: number;
};
getSourceDataId?: () => string | undefined;
getVolumeId?: () => string | undefined;
getResolvedView?: () =>
| {
toICamera?: () => Pick<Types.ICamera, 'viewPlaneNormal' | 'viewUp'>;
}
| undefined;
type?: string;
};
function isSupportedImageMapperBlendMode(
blendMode: Enums.BlendModes | undefined
): boolean {
return (
blendMode === Enums.BlendModes.COMPOSITE ||
blendMode === Enums.BlendModes.AVERAGE_INTENSITY_BLEND
);
}
function isPlanarGpuVolumeSliceViewport(
viewport: Types.IViewport
): viewport is ViewportLabelmapImageMapperCompatibilityViewport {
const compatibilityViewport =
viewport as ViewportLabelmapImageMapperCompatibilityViewport;
Eif (compatibilityViewport.type !== Enums.ViewportType.PLANAR_NEXT) {
return false;
}
return (
getPlanarPrimaryRenderMode(compatibilityViewport) ===
ActorRenderMode.VTK_VOLUME_SLICE
);
}
function getPlanarPrimaryRenderMode(
viewport: ViewportLabelmapImageMapperCompatibilityViewport
): Types.ActorRenderMode | string | undefined {
const primaryDataId = getPlanarPrimaryDataId(viewport);
if (primaryDataId) {
const renderMode = viewport.getDisplaySetRenderMode?.(primaryDataId);
if (renderMode) {
return renderMode;
}
}
return viewport.getDefaultActor?.()?.actorMapper?.renderMode;
}
function getPlanarVolumeSliceMapper(
viewport: ViewportLabelmapImageMapperCompatibilityViewport
) {
const defaultActor = viewport.getDefaultActor?.();
return (defaultActor?.actorMapper?.mapper ??
defaultActor?.actorMapper?.actor?.getMapper?.()) as
| {
getBlendMode?: () => Enums.BlendModes;
getSlabThickness?: () => number;
}
| undefined;
}
function getPlanarPrimaryDataId(
viewport: ViewportLabelmapImageMapperCompatibilityViewport
): string | undefined {
const sourceDataId = viewport.getSourceDataId?.();
if (sourceDataId) {
return sourceDataId;
}
const renderModes = (
viewport as Types.IViewport & {
_debug?: {
renderModes?: Record<string, Types.ActorRenderMode>;
};
}
)._debug?.renderModes;
if (!renderModes) {
return;
}
return (
Object.entries(renderModes).find(
([dataId, renderMode]) =>
viewport.getDisplaySetRole?.(dataId) === 'source' &&
renderMode === ActorRenderMode.VTK_VOLUME_SLICE
)?.[0] ??
Object.entries(renderModes).find(
([, renderMode]) => renderMode === ActorRenderMode.VTK_VOLUME_SLICE
)?.[0]
);
}
function getLabelmapImageMapperCamera(
viewport: Types.IViewport
): Pick<Types.ICamera, 'viewPlaneNormal' | 'viewUp'> | undefined {
const compatibilityViewport =
viewport as ViewportLabelmapImageMapperCompatibilityViewport;
const resolvedCamera = compatibilityViewport
.getResolvedView?.()
?.toICamera?.();
if (isLabelmapImageMapperCamera(resolvedCamera)) {
return resolvedCamera;
}
const legacyCamera = compatibilityViewport.getCamera?.();
return isLabelmapImageMapperCamera(legacyCamera) ? legacyCamera : undefined;
}
function isLabelmapImageMapperCamera(
camera: unknown
): camera is Pick<Types.ICamera, 'viewPlaneNormal' | 'viewUp'> {
const candidate = camera as Partial<Types.ICamera> | undefined;
return Boolean(
candidate &&
isPoint3Like(candidate.viewPlaneNormal) &&
isPoint3Like(candidate.viewUp)
);
}
function isPoint3Like(value: unknown): value is ArrayLike<number> {
const candidate = value as ArrayLike<number> | undefined;
return Boolean(
candidate &&
typeof candidate.length === 'number' &&
candidate.length >= 3 &&
Number.isFinite(Number(candidate[0])) &&
Number.isFinite(Number(candidate[1])) &&
Number.isFinite(Number(candidate[2]))
);
}
function getPlanarVolumeDataPresentation(
viewport: ViewportLabelmapImageMapperCompatibilityViewport
) {
if (!viewport.getDisplaySetPresentation) {
return;
}
const primaryDataId = getPlanarPrimaryDataId(viewport);
return primaryDataId
? viewport.getDisplaySetPresentation(primaryDataId)
: undefined;
}
function getCompatibilityBlendMode(
viewport: Types.IViewport
): Enums.BlendModes | undefined {
Eif (viewport instanceof VolumeViewport) {
return viewport.getBlendMode?.();
}
if (!isPlanarGpuVolumeSliceViewport(viewport)) {
return;
}
const presentationBlendMode =
getPlanarVolumeDataPresentation(viewport)?.blendMode;
if (presentationBlendMode !== undefined) {
return presentationBlendMode;
}
return Enums.BlendModes.AVERAGE_INTENSITY_BLEND;
}
function getCompatibilitySlabThickness(viewport: Types.IViewport): number {
Eif (viewport instanceof VolumeViewport) {
return viewport.getSlabThickness?.() ?? MINIMUM_SLAB_THICKNESS;
}
if (!isPlanarGpuVolumeSliceViewport(viewport)) {
return MINIMUM_SLAB_THICKNESS;
}
const mapperSlabThickness =
getPlanarVolumeSliceMapper(viewport)?.getSlabThickness?.();
if (typeof mapperSlabThickness === 'number') {
return mapperSlabThickness;
}
return (
getPlanarVolumeDataPresentation(viewport)?.slabThickness ??
MINIMUM_SLAB_THICKNESS
);
}
export function isSliceRenderingEnabled(options?: {
useSliceRendering?: boolean;
}): boolean {
Iif (options?.useSliceRendering) {
return true;
}
Iif (typeof window === 'undefined') {
return false;
}
const params = new URLSearchParams(window.location.search);
Eif (!params.has(LABELMAP_IMAGE_MAPPER_URL_PARAM)) {
return false;
}
const value = params.get(LABELMAP_IMAGE_MAPPER_URL_PARAM);
if (value === null || value === '') {
return true;
}
const normalizedValue = value.trim().toLowerCase();
return (
normalizedValue !== '0' &&
normalizedValue !== 'false' &&
normalizedValue !== 'off'
);
}
export function shouldUseSliceRendering(
segmentation?: Segmentation,
options?: {
useSliceRendering?: boolean;
}
): boolean {
Iif (isSliceRenderingEnabled(options)) {
return true;
}
Iif (!segmentation?.representationData?.Labelmap) {
return false;
}
const layers = getLabelmaps(segmentation);
return (
layers.length > 1 && layers.some((layer) => layer.storageKind === 'stack')
);
}
export function canRenderVolumeViewportLabelmapAsImage(
viewport: Types.IViewport
): viewport is ViewportLabelmapImageMapperCompatibilityViewport {
const isLegacyVolumeViewport = viewport instanceof VolumeViewport;
const isNextPlanarViewport = isPlanarGpuVolumeSliceViewport(viewport);
if (!isLegacyVolumeViewport && !isNextPlanarViewport) {
return false;
}
const blendMode = getCompatibilityBlendMode(viewport);
Iif (isLegacyVolumeViewport && !isSupportedImageMapperBlendMode(blendMode)) {
return false;
}
const slabThickness = getCompatibilitySlabThickness(viewport);
Iif (slabThickness > MINIMUM_SLAB_THICKNESS + SLAB_THICKNESS_EPSILON) {
return false;
}
Eif (isLegacyVolumeViewport) {
try {
viewport.getSliceViewInfo();
return true;
} catch {
return false;
}
}
return true;
}
export function getVolumeViewportLabelmapImageMapperState(
viewport: Types.IViewport
): VolumeViewportLabelmapImageMapperState {
const compatibilityViewport =
viewport as ViewportLabelmapImageMapperCompatibilityViewport;
const isLegacyVolumeViewport = viewport instanceof VolumeViewport;
const isNextPlanarViewport = isPlanarGpuVolumeSliceViewport(viewport);
if (!isLegacyVolumeViewport && !isNextPlanarViewport) {
return {
key: 'unsupported:viewport',
sliceIndex: NaN,
supported: false,
};
}
const camera = getLabelmapImageMapperCamera(viewport);
if (!camera) {
return {
key: 'unsupported:camera',
sliceIndex: NaN,
supported: false,
};
}
const { viewPlaneNormal, viewUp } = camera;
const normalizedNormal = vec3.normalize(
vec3.create(),
viewPlaneNormal as unknown as vec3
) as Types.Point3;
const normalizedViewUp = vec3.normalize(
vec3.create(),
viewUp as unknown as vec3
) as Types.Point3;
let sliceIndex: number | undefined;
if (isLegacyVolumeViewport) {
try {
sliceIndex = viewport.getSliceViewInfo().sliceIndex;
} catch {
sliceIndex = undefined;
}
} else {
sliceIndex = compatibilityViewport.getCurrentImageIdIndex?.();
}
const blendMode = getCompatibilityBlendMode(viewport);
const slabThickness = getCompatibilitySlabThickness(viewport);
const orientationKey = [
normalizedNormal.map((value) => value.toFixed(3)).join(','),
normalizedViewUp.map((value) => value.toFixed(3)).join(','),
].join('|');
if (isLegacyVolumeViewport && !isSupportedImageMapperBlendMode(blendMode)) {
return {
key: `unsupported:blend:${blendMode}:${orientationKey}`,
sliceIndex: sliceIndex ?? NaN,
supported: false,
};
}
if (slabThickness > MINIMUM_SLAB_THICKNESS + SLAB_THICKNESS_EPSILON) {
return {
key: `unsupported:slab:${slabThickness.toFixed(3)}:${orientationKey}`,
sliceIndex: sliceIndex ?? NaN,
supported: false,
};
}
if (isLegacyVolumeViewport) {
try {
viewport.getSliceViewInfo();
} catch {
return {
key: `unsupported:oblique:${orientationKey}`,
sliceIndex: sliceIndex ?? NaN,
supported: false,
};
}
}
if (
isNextPlanarViewport &&
getPlanarPrimaryRenderMode(compatibilityViewport) !==
ActorRenderMode.VTK_VOLUME_SLICE
) {
return {
key: `unsupported:renderMode:${orientationKey}`,
sliceIndex: sliceIndex ?? NaN,
supported: false,
};
}
return {
// Use the discrete slice index instead of focal-point-derived world position.
// Zoom and pan can move camera/focal point without changing the extracted
// labelmap slice, and using world position here causes redundant renders.
key: `supported:${orientationKey}:${sliceIndex ?? 0}`,
sliceIndex: sliceIndex ?? NaN,
supported: true,
};
}
export { DIRECTION_ALIGNMENT_TOLERANCE };
|