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utilities as csUtils,
cache,
getEnabledElement,
StackViewport,
eventTarget,
Enums,
} from '@cornerstonejs/core';
import { vec3, vec2 } from 'gl-matrix';
import type { Types } from '@cornerstonejs/core';
import type {
PublicToolProps,
ToolProps,
EventTypes,
SVGDrawingHelper,
} from '../../types';
import { BaseTool } from '../base';
import {
fillInsideSphere,
thresholdInsideSphere,
} from './strategies/fillSphere';
import { eraseInsideSphere } from './strategies/eraseSphere';
import {
thresholdInsideCircle,
fillInsideCircle,
} from './strategies/fillCircle';
import { eraseInsideCircle } from './strategies/eraseCircle';
import {
Events,
ToolModes,
SegmentationRepresentations,
StrategyCallbacks,
} from '../../enums';
import { drawCircle as drawCircleSvg } from '../../drawingSvg';
import {
resetElementCursor,
hideElementCursor,
} from '../../cursors/elementCursor';
import triggerAnnotationRenderForViewportUIDs from '../../utilities/triggerAnnotationRenderForViewportIds';
import {
config as segmentationConfig,
segmentLocking,
segmentIndex as segmentIndexController,
state as segmentationState,
activeSegmentation,
} from '../../stateManagement/segmentation';
import {
LabelmapSegmentationDataVolume,
LabelmapSegmentationDataStack,
} from '../../types/LabelmapTypes';
import { isVolumeSegmentation } from './strategies/utils/stackVolumeCheck';
/**
* A type for preview data/information, used to setup previews on hover, or
* maintain the preview information.
*/
export type PreviewData = {
/**
* The preview data returned from the strategy
*/
preview: unknown;
timer?: number;
timerStart: number;
startPoint: Types.Point2;
element: HTMLDivElement;
isDrag: boolean;
};
/**
* @public
*/
class BrushTool extends BaseTool {
static toolName;
private _editData: {
segmentsLocked: number[]; //
segmentationRepresentationUID?: string;
imageIdReferenceMap?: Map<string, string>;
volumeId?: string;
referencedVolumeId?: string;
} | null;
private _hoverData?: {
brushCursor: any;
segmentationId: string;
segmentIndex: number;
segmentationRepresentationUID: string;
segmentColor: [number, number, number, number];
viewportIdsToRender: string[];
centerCanvas?: Array<number>;
};
private _previewData?: PreviewData = {
preview: null,
element: null,
timerStart: 0,
timer: null,
startPoint: [NaN, NaN],
isDrag: false,
};
constructor(
toolProps: PublicToolProps = {},
defaultToolProps: ToolProps = {
supportedInteractionTypes: ['Mouse', 'Touch'],
configuration: {
strategies: {
FILL_INSIDE_CIRCLE: fillInsideCircle,
ERASE_INSIDE_CIRCLE: eraseInsideCircle,
FILL_INSIDE_SPHERE: fillInsideSphere,
ERASE_INSIDE_SPHERE: eraseInsideSphere,
THRESHOLD_INSIDE_CIRCLE: thresholdInsideCircle,
THRESHOLD_INSIDE_SPHERE: thresholdInsideSphere,
},
strategySpecificConfiguration: {
THRESHOLD: {
threshold: [-150, -70], // E.g. CT Fat // Only used during threshold strategies.
},
},
defaultStrategy: 'FILL_INSIDE_CIRCLE',
activeStrategy: 'FILL_INSIDE_CIRCLE',
thresholdVolumeId: null,
brushSize: 25,
preview: {
// Have to enable the preview to use this
enabled: false,
previewColors: {},
// The time before showing a preview
previewTimeMs: 250,
// The distance to move to show a preview before preview time expired
previewMoveDistance: 8,
// The distance to drag before being considered a drag rather than click
dragMoveDistance: 4,
// The time to consider a mouse click a drag when moved less than dragMoveDistance
dragTimeMs: 500,
},
actions: {
[StrategyCallbacks.AcceptPreview]: {
method: StrategyCallbacks.AcceptPreview,
bindings: [
{
key: 'Enter',
},
],
},
[StrategyCallbacks.RejectPreview]: {
method: StrategyCallbacks.RejectPreview,
bindings: [
{
key: 'Escape',
},
],
},
},
},
}
) {
super(toolProps, defaultToolProps);
}
onSetToolPassive = (evt) => {
this.disableCursor();
};
onSetToolEnabled = () => {
this.disableCursor();
};
onSetToolDisabled = (evt) => {
this.disableCursor();
};
private disableCursor() {
this._hoverData = undefined;
this.rejectPreview();
}
createEditData(element) {
const enabledElement = getEnabledElement(element);
const { viewport } = enabledElement;
const toolGroupId = this.toolGroupId;
const activeSegmentationRepresentation =
activeSegmentation.getActiveSegmentationRepresentation(toolGroupId);
if (!activeSegmentationRepresentation) {
throw new Error(
'No active segmentation detected, create a segmentation representation before using the brush tool'
);
}
const { segmentationId, type, segmentationRepresentationUID } =
activeSegmentationRepresentation;
if (type === SegmentationRepresentations.Contour) {
throw new Error('Not implemented yet');
}
const segmentsLocked = segmentLocking.getLockedSegments(segmentationId);
const { representationData } =
segmentationState.getSegmentation(segmentationId);
const labelmapData =
representationData[SegmentationRepresentations.Labelmap];
if (isVolumeSegmentation(labelmapData, viewport)) {
const { volumeId } = representationData[
type
] as LabelmapSegmentationDataVolume;
const actors = viewport.getActors();
const isStackViewport = viewport instanceof StackViewport;
if (isStackViewport) {
const event = new CustomEvent(Enums.Events.ERROR_EVENT, {
detail: {
type: 'Segmentation',
message: 'Cannot perform brush operation on the selected viewport',
},
cancelable: true,
});
eventTarget.dispatchEvent(event);
return null;
}
// we used to take the first actor here but we should take the one that is
// probably the same size as the segmentation volume
const volumes = actors.map((actorEntry) =>
cache.getVolume(actorEntry.referenceId)
);
const segmentationVolume = cache.getVolume(volumeId);
const referencedVolumeIdToThreshold =
volumes.find((volume) =>
csUtils.isEqual(volume.dimensions, segmentationVolume.dimensions)
)?.volumeId || volumes[0]?.volumeId;
return {
volumeId,
referencedVolumeId:
this.configuration.thresholdVolumeId ?? referencedVolumeIdToThreshold,
segmentsLocked,
segmentationRepresentationUID,
};
} else {
const { imageIdReferenceMap } =
labelmapData as LabelmapSegmentationDataStack;
const currentImageId = viewport.getCurrentImageId();
if (!imageIdReferenceMap.get(currentImageId)) {
// if there is no stack segmentation slice for the current image
// we should not allow the user to perform any operation
return;
}
// here we should identify if we can perform sphere manipulation
// for these stack of images, if the metadata is not present
// to create a volume or if there are inconsistencies between
// the image metadata we should not allow the sphere manipulation
// and should throw an error or maybe simply just allow circle manipulation
// and not sphere manipulation
if (this.configuration.activeStrategy.includes('SPHERE')) {
throw new Error(
'Sphere manipulation is not supported for stacks of image segmentations yet'
);
// Todo: add sphere (volumetric) manipulation support for stacks of images
// we should basically check if the stack constructs a valid volume
// meaning all the metadata is present and consistent
// then we use a VoxelManager mapping to map a volume like appearance
// for the stack data.
// csUtils.isValidVolume(referencedImageIds
}
return {
imageIdReferenceMap,
segmentsLocked,
segmentationRepresentationUID,
};
}
}
preMouseDownCallback = (
evt: EventTypes.MouseDownActivateEventType
): boolean => {
const eventData = evt.detail;
const { element } = eventData;
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
this._editData = this.createEditData(element);
this._activateDraw(element);
hideElementCursor(element);
evt.preventDefault();
// This might be a mouse down
this._previewData.isDrag = false;
this._previewData.timerStart = Date.now();
const hoverData = this._hoverData || this.createHoverData(element);
triggerAnnotationRenderForViewportUIDs(
renderingEngine,
hoverData.viewportIdsToRender
);
this.applyActiveStrategyCallback(
enabledElement,
this.getOperationData(element),
StrategyCallbacks.OnInteractionStart
);
return true;
};
/**
* This call will be made when the mouse moves and the tool is active, but
* not actually drawing at the moment.
* The behavior is:
* 1. Update the cursor
* 2. Call the active strategy event 'preview' and 'rejectPreview'
* on the mouse cursor position on a periodic basis to create a preview
* when configured to do so.
*
* The preview will be shown after the mouse has been stationary for 250 ms.
* Any preview will be cancelled (immediately) after moving outside the center
* distance.
* As well, if the mouse moves but stays inside the center area for 250 ms,
* then the cancel will happen with a new preview being added.
*
* See mouse up details for how the preview gets accepted.
*
* The preview also needs to be cancelled on changing tools.
*/
mouseMoveCallback = (evt: EventTypes.InteractionEventType): void => {
if (this.mode === ToolModes.Active) {
this.updateCursor(evt);
if (!this.configuration.preview.enabled) {
return;
}
const { previewTimeMs, previewMoveDistance, dragMoveDistance } =
this.configuration.preview;
const { currentPoints, element } = evt.detail;
const { canvas } = currentPoints;
const { preview, startPoint, timer, timerStart, isDrag } =
this._previewData;
const delta = vec2.distance(canvas, startPoint);
const time = Date.now() - timerStart;
if (
delta > previewMoveDistance ||
(time > previewTimeMs && delta > dragMoveDistance)
) {
if (timer) {
window.clearTimeout(timer);
this._previewData.timer = null;
}
if (preview && !isDrag) {
this.rejectPreview(element);
}
}
if (!this._previewData.timer) {
const timer = window.setTimeout(this.previewCallback, 250);
Object.assign(this._previewData, {
timerStart: Date.now(),
timer,
startPoint: canvas,
element,
});
}
}
};
previewCallback = () => {
if (this._previewData.preview) {
return;
}
this._previewData.timer = null;
this._previewData.preview = this.applyActiveStrategyCallback(
getEnabledElement(this._previewData.element),
this.getOperationData(this._previewData.element),
StrategyCallbacks.Preview
);
};
private createHoverData(element, centerCanvas?) {
const enabledElement = getEnabledElement(element);
const { viewport } = enabledElement;
const camera = viewport.getCamera();
const { viewPlaneNormal, viewUp } = camera;
const viewportIdsToRender = [viewport.id];
const {
segmentIndex,
segmentationId,
segmentationRepresentationUID,
segmentColor,
} = this.getActiveSegmentationData() || {};
// Center of circle in canvas Coordinates
const brushCursor = {
metadata: {
viewPlaneNormal: <Types.Point3>[...viewPlaneNormal],
viewUp: <Types.Point3>[...viewUp],
FrameOfReferenceUID: viewport.getFrameOfReferenceUID(),
referencedImageId: '',
toolName: this.getToolName(),
segmentColor,
},
data: {},
};
return {
brushCursor,
centerCanvas,
segmentIndex,
segmentationId,
segmentationRepresentationUID,
segmentColor,
viewportIdsToRender,
};
}
private getActiveSegmentationData() {
const toolGroupId = this.toolGroupId;
const activeSegmentationRepresentation =
activeSegmentation.getActiveSegmentationRepresentation(toolGroupId);
if (!activeSegmentationRepresentation) {
console.warn(
'No active segmentation detected, create one before using the brush tool'
);
return;
}
const { segmentationRepresentationUID, segmentationId } =
activeSegmentationRepresentation;
const segmentIndex =
segmentIndexController.getActiveSegmentIndex(segmentationId);
const segmentColor = segmentationConfig.color.getColorForSegmentIndex(
toolGroupId,
segmentationRepresentationUID,
segmentIndex
);
return {
segmentIndex,
segmentationId,
segmentationRepresentationUID,
segmentColor,
};
}
/**
* Updates the cursor position and whether it is showing or not.
* Can be over-ridden to add more cursor details or a preview.
*/
protected updateCursor(evt: EventTypes.InteractionEventType) {
const eventData = evt.detail;
const { element } = eventData;
const { currentPoints } = eventData;
const centerCanvas = currentPoints.canvas;
this._hoverData = this.createHoverData(element, centerCanvas);
this._calculateCursor(element, centerCanvas);
if (!this._hoverData) {
return;
}
triggerAnnotationRenderForViewportUIDs(
getEnabledElement(element).renderingEngine,
this._hoverData.viewportIdsToRender
);
}
private _dragCallback = (evt: EventTypes.InteractionEventType): void => {
const eventData = evt.detail;
const { element, currentPoints } = eventData;
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
this.updateCursor(evt);
const { viewportIdsToRender } = this._hoverData;
triggerAnnotationRenderForViewportUIDs(
renderingEngine,
viewportIdsToRender
);
const delta = vec2.distance(
currentPoints.canvas,
this._previewData.startPoint
);
const { dragTimeMs, dragMoveDistance } = this.configuration.preview;
if (
!this._previewData.isDrag &&
this._previewData.preview &&
Date.now() - this._previewData.timerStart < dragTimeMs &&
delta < dragMoveDistance
) {
// If we are showing a preview, then don't start dragging quite immediately
// so that click up can accept the preview.
return;
}
this._previewData.preview = this.applyActiveStrategy(
enabledElement,
this.getOperationData(element)
);
this._previewData.element = element;
// Add a bit of time to the timer start so small accidental movements dont
// cause issues on clicking
this._previewData.timerStart = Date.now() + dragTimeMs;
this._previewData.isDrag = true;
this._previewData.startPoint = currentPoints.canvas;
};
protected getOperationData(element?) {
const editData = this._editData || this.createEditData(element);
const {
segmentIndex,
segmentationId,
segmentationRepresentationUID,
brushCursor,
} = this._hoverData || this.createHoverData(element);
const { data, metadata = {} } = brushCursor || {};
const { viewPlaneNormal, viewUp } = metadata;
const operationData = {
...editData,
points: data?.handles?.points,
segmentIndex,
previewColors: this.configuration.preview.enabled
? this.configuration.preview.previewColors
: null,
viewPlaneNormal,
toolGroupId: this.toolGroupId,
segmentationId,
segmentationRepresentationUID,
viewUp,
strategySpecificConfiguration:
this.configuration.strategySpecificConfiguration,
// Provide the preview information so that data can be used directly
preview: this._previewData?.preview,
};
return operationData;
}
private _calculateCursor(element, centerCanvas) {
const enabledElement = getEnabledElement(element);
const { viewport } = enabledElement;
const { canvasToWorld } = viewport;
const camera = viewport.getCamera();
const { brushSize } = this.configuration;
const viewUp = vec3.fromValues(
camera.viewUp[0],
camera.viewUp[1],
camera.viewUp[2]
);
const viewPlaneNormal = vec3.fromValues(
camera.viewPlaneNormal[0],
camera.viewPlaneNormal[1],
camera.viewPlaneNormal[2]
);
const viewRight = vec3.create();
vec3.cross(viewRight, viewUp, viewPlaneNormal);
// in the world coordinate system, the brushSize is the radius of the circle
// in mm
const centerCursorInWorld: Types.Point3 = canvasToWorld([
centerCanvas[0],
centerCanvas[1],
]);
const bottomCursorInWorld = vec3.create();
const topCursorInWorld = vec3.create();
const leftCursorInWorld = vec3.create();
const rightCursorInWorld = vec3.create();
// Calculate the bottom and top points of the circle in world coordinates
for (let i = 0; i <= 2; i++) {
bottomCursorInWorld[i] = centerCursorInWorld[i] - viewUp[i] * brushSize;
topCursorInWorld[i] = centerCursorInWorld[i] + viewUp[i] * brushSize;
leftCursorInWorld[i] = centerCursorInWorld[i] - viewRight[i] * brushSize;
rightCursorInWorld[i] = centerCursorInWorld[i] + viewRight[i] * brushSize;
}
if (!this._hoverData) {
return;
}
const { brushCursor } = this._hoverData;
const { data } = brushCursor;
if (data.handles === undefined) {
data.handles = {};
}
data.handles.points = [
bottomCursorInWorld,
topCursorInWorld,
leftCursorInWorld,
rightCursorInWorld,
];
const activeStrategy = this.configuration.activeStrategy;
const strategy = this.configuration.strategies[activeStrategy];
// Note: i don't think this is the best way to implement this
// but don't think we have a better way to do it for now
if (typeof strategy.computeInnerCircleRadius === 'function') {
strategy.computeInnerCircleRadius({
configuration: this.configuration,
viewport,
});
}
data.invalidated = false;
}
/**
* The end callback call is made when the mouse is released. This will
* perform another active strategy render event to render the final position.
* As well, the finish strategy callback will be made during this time.
*/
private _endCallback = (evt: EventTypes.InteractionEventType): void => {
const eventData = evt.detail;
const { element } = eventData;
const enabledElement = getEnabledElement(element);
const operationData = this.getOperationData(element);
// Don't re-fill when the preview is showing and the user clicks again
// otherwise the new area of hover may get filled, which is unexpected
if (!this._previewData.preview && !this._previewData.isDrag) {
this.applyActiveStrategy(enabledElement, operationData);
}
this._deactivateDraw(element);
resetElementCursor(element);
this.updateCursor(evt);
this._editData = null;
this.applyActiveStrategyCallback(
enabledElement,
operationData,
StrategyCallbacks.OnInteractionEnd
);
if (!this._previewData.isDrag) {
this.acceptPreview(element);
}
};
/**
* Cancels any preview view being shown, resetting any segments being shown.
*/
public rejectPreview(element = this._previewData.element) {
if (!element || !this._previewData.preview) {
return;
}
const enabledElement = getEnabledElement(element);
this.applyActiveStrategyCallback(
enabledElement,
this.getOperationData(element),
StrategyCallbacks.RejectPreview
);
this._previewData.preview = null;
this._previewData.isDrag = false;
}
/**
* Accepts a preview, marking it as the active segment.
*/
public acceptPreview(element = this._previewData.element) {
if (!element) {
return;
}
const enabledElement = getEnabledElement(element);
this.applyActiveStrategyCallback(
enabledElement,
this.getOperationData(element),
StrategyCallbacks.AcceptPreview
);
this._previewData.isDrag = false;
this._previewData.preview = null;
}
/**
* Add event handlers for the modify event loop, and prevent default event propagation.
*/
private _activateDraw = (element: HTMLDivElement): void => {
element.addEventListener(
Events.MOUSE_UP,
this._endCallback as EventListener
);
element.addEventListener(
Events.MOUSE_DRAG,
this._dragCallback as EventListener
);
element.addEventListener(
Events.MOUSE_CLICK,
this._endCallback as EventListener
);
};
/**
* Add event handlers for the modify event loop, and prevent default event prapogation.
*/
private _deactivateDraw = (element: HTMLDivElement): void => {
element.removeEventListener(
Events.MOUSE_UP,
this._endCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_DRAG,
this._dragCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_CLICK,
this._endCallback as EventListener
);
};
public invalidateBrushCursor() {
if (this._hoverData === undefined) {
return;
}
const { data } = this._hoverData.brushCursor;
data.invalidated = true;
// Todo: figure out if other brush metadata (other than segment color) should get updated
// during the brush cursor invalidation
const { segmentColor } = this.getActiveSegmentationData() || {};
this._hoverData.brushCursor.metadata.segmentColor = segmentColor;
}
renderAnnotation(
enabledElement: Types.IEnabledElement,
svgDrawingHelper: SVGDrawingHelper
): void {
if (!this._hoverData) {
return;
}
const { viewport } = enabledElement;
const viewportIdsToRender = this._hoverData.viewportIdsToRender;
if (!viewportIdsToRender.includes(viewport.id)) {
return;
}
const brushCursor = this._hoverData.brushCursor;
if (brushCursor.data.invalidated === true) {
const { centerCanvas } = this._hoverData;
const { element } = viewport;
// This can be set true when changing the brush size programmatically
// whilst the cursor is being rendered.
this._calculateCursor(element, centerCanvas);
}
const toolMetadata = brushCursor.metadata;
if (!toolMetadata) {
return;
}
const annotationUID = toolMetadata.brushCursorUID;
const data = brushCursor.data;
const { points } = data.handles;
const canvasCoordinates = points.map((p) => viewport.worldToCanvas(p));
const bottom = canvasCoordinates[0];
const top = canvasCoordinates[1];
const center = [
Math.floor((bottom[0] + top[0]) / 2),
Math.floor((bottom[1] + top[1]) / 2),
];
const radius = Math.abs(bottom[1] - Math.floor((bottom[1] + top[1]) / 2));
const color = `rgb(${toolMetadata.segmentColor?.slice(0, 3) || [0, 0, 0]})`;
// If rendering engine has been destroyed while rendering
if (!viewport.getRenderingEngine()) {
console.warn('Rendering Engine has been destroyed');
return;
}
const circleUID = '0';
drawCircleSvg(
svgDrawingHelper,
annotationUID,
circleUID,
center as Types.Point2,
radius,
{
color,
}
);
const activeStrategy = this.configuration.activeStrategy;
const { dynamicRadiusInCanvas } = this.configuration
.strategySpecificConfiguration[activeStrategy] || {
dynamicRadiusInCanvas: 0,
};
if (dynamicRadiusInCanvas) {
const circleUID1 = '1';
drawCircleSvg(
svgDrawingHelper,
annotationUID,
circleUID1,
center as Types.Point2,
dynamicRadiusInCanvas,
{
color,
}
);
}
}
}
BrushTool.toolName = 'Brush';
export default BrushTool;
|