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CONSTANTS,
getEnabledElement,
VolumeViewport,
utilities as csUtils,
} from '@cornerstonejs/core';
import type { Types } from '@cornerstonejs/core';
import { vec3 } from 'gl-matrix';
import { getCalibratedLengthUnitsAndScale } from '../../utilities/getCalibratedUnits';
import { math, roundNumber } from '../../utilities';
import { polyline } from '../../utilities/math';
import { filterAnnotationsForDisplay } from '../../utilities/planar';
import throttle from '../../utilities/throttle';
import { getViewportIdsWithToolToRender } from '../../utilities/viewportFilters';
import triggerAnnotationRenderForViewportIds from '../../utilities/triggerAnnotationRenderForViewportIds';
import registerDrawLoop from './planarFreehandROITool/drawLoop';
import registerEditLoopCommon from './planarFreehandROITool/editLoopCommon';
import registerClosedContourEditLoop from './planarFreehandROITool/closedContourEditLoop';
import registerOpenContourEditLoop from './planarFreehandROITool/openContourEditLoop';
import registerOpenContourEndEditLoop from './planarFreehandROITool/openContourEndEditLoop';
import registerRenderMethods from './planarFreehandROITool/renderMethods';
import type {
EventTypes,
ToolHandle,
Annotation,
Annotations,
AnnotationStyle,
PublicToolProps,
ToolProps,
SVGDrawingHelper,
AnnotationRenderContext,
} from '../../types';
import { triggerAnnotationModified } from '../../stateManagement/annotation/helpers/state';
import { drawLinkedTextBox } from '../../drawingSvg';
import { PlanarFreehandROIAnnotation } from '../../types/ToolSpecificAnnotationTypes';
import { getTextBoxCoordsCanvas } from '../../utilities/drawing';
import { PlanarFreehandROICommonData } from '../../utilities/math/polyline/planarFreehandROIInternalTypes';
import { getLineSegmentIntersectionsCoordinates } from '../../utilities/math/polyline';
import pointInShapeCallback from '../../utilities/pointInShapeCallback';
import { isViewportPreScaled } from '../../utilities/viewport/isViewportPreScaled';
import { getModalityUnit } from '../../utilities/getModalityUnit';
import { BasicStatsCalculator } from '../../utilities/math/basic';
import calculatePerimeter from '../../utilities/contours/calculatePerimeter';
import ContourSegmentationBaseTool from '../base/ContourSegmentationBaseTool';
import { KeyboardBindings, ChangeTypes } from '../../enums';
const { pointCanProjectOnLine } = polyline;
const { EPSILON } = CONSTANTS;
const PARALLEL_THRESHOLD = 1 - EPSILON;
/**
* PlanarFreehandROITool lets you draw annotations that define an arbitrarily drawn region.
* You can use the PlanarFreehandROITool in all perpendicular views (axial, sagittal, coronal),
* support for oblique views is possible, but not yet supported, due to the implementation of
* `getSubPixelSpacingAndXYDirections`.
*
* The resulting annotation's data and metadata (the
* state of the viewport while drawing was happening) will get added to the
* ToolState manager and can be accessed from the ToolState by calling getAnnotations
* or similar methods.
*
* PlanarFreehandROITool annotation can be smoothed on drawing completion. This is a configured based approach.
* The smoothing process uses b-spline algorithm and consider 4 configurations properties:
* - smoothing.smoothOnAdd: to tell whether it should be smoothed or not (for editing it is considered the property smoothOnEdit) (default: false)
* - smoothing.smoothOnEdit: to tell whether it should be smoothed or not when editing (default: false)
* - smoothing.knotsRatioPercentageOnAdd: percentage of points from Segment that are likely to be considered knots during smoothing (for editing it is considered the property knotsRatioPercentageOnEdit) ( default: 40)
* - smoothing.knotsRatioPercentageOnEdit: same as knotsRatioPercentageOnAdd but applicable only when editing the tool (default: 40)
*
* So, with that said the smoothing might occur when:
* - drawing is done (i.e mouse is released) and smoothing.smoothOnAdd is true. smoothing algorithm uses knotsRatioPercentageOnAdd
* - edit drawing is done (i.e mouse is released) and smoothing.smoothOnEdit is true. smoothing algorithm uses knotsRatioPercentageOnEdit and its only applied to changed segment
* smoothing does not occur when:
* - smoothing.smoothOnAdd is false and drawing is completed
* - smoothing.smoothOnEdit is false and edit is completed
* - drawing still happening (editing or not)
*
* The result of smoothing will be removal of some of the outliers
* Changing tool configuration (see below) you can fine-tune the smoothing process by changing knotsRatioPercentageOnAdd and knotsRatioPercentageOnEdit value, which smaller values produces a more agressive smoothing.
* A smaller value of knotsRatioPercentageOnAdd/knotsRatioPercentageOnEdit produces a more aggressive smoothing.
*
* ```js
* cornerstoneTools.addTool(PlanarFreehandROITool)
*
* const toolGroup = ToolGroupManager.createToolGroup('toolGroupId')
*
* toolGroup.addTool(PlanarFreehandROITool.toolName)
*
* toolGroup.addViewport('viewportId', 'renderingEngineId')
*
* toolGroup.setToolActive(PlanarFreehandROITool.toolName, {
* bindings: [
* {
* mouseButton: MouseBindings.Primary, // Left Click
* },
* ],
* })
*
* // set smoothing aggressiveness while adding new annotation (ps: this does not change if smoothing is ON or OFF)
* toolGroup.setToolConfiguration(PlanarFreehandROITool.toolName, {
* smoothing: { knotsRatioPercentageOnAdd: 30 },
* });
*
* // set smoothing to be ON while editing only
* toolGroup.setToolConfiguration(PlanarFreehandROITool.toolName, {
* smoothing: { smoothOnAdd: false, smoothOnEdit: true },
* });
* ```
*
*
* Read more in the Docs section of the website.
*/
class PlanarFreehandROITool extends ContourSegmentationBaseTool {
static toolName;
public touchDragCallback: any;
public mouseDragCallback: any;
_throttledCalculateCachedStats: any;
private commonData?: PlanarFreehandROICommonData;
isDrawing = false;
isEditingClosed = false;
isEditingOpen = false;
protected activateDraw: (
evt: EventTypes.InteractionEventType,
annotation: PlanarFreehandROIAnnotation,
viewportIdsToRender: string[]
) => void;
private activateClosedContourEdit: (
evt: EventTypes.InteractionEventType,
annotation: PlanarFreehandROIAnnotation,
viewportIdsToRender: string[]
) => void;
private activateOpenContourEdit: (
evt: EventTypes.InteractionEventType,
annotation: PlanarFreehandROIAnnotation,
viewportIdsToRender: string[]
) => void;
private activateOpenContourEndEdit: (
evt: EventTypes.InteractionEventType,
annotation: PlanarFreehandROIAnnotation,
viewportIdsToRender: string[],
handle: ToolHandle | null
) => void;
private cancelDrawing: (element: HTMLDivElement) => void;
private cancelClosedContourEdit: (element: HTMLDivElement) => void;
private cancelOpenContourEdit: (element: HTMLDivElement) => void;
private renderContour: (
enabledElement: Types.IEnabledElement,
svgDrawingHelper: SVGDrawingHelper,
annotation: PlanarFreehandROIAnnotation
) => void;
private renderContourBeingDrawn: (
enabledElement: Types.IEnabledElement,
svgDrawingHelper: SVGDrawingHelper,
annotation: PlanarFreehandROIAnnotation
) => void;
private renderClosedContourBeingEdited: (
enabledElement: Types.IEnabledElement,
svgDrawingHelper: SVGDrawingHelper,
annotation: PlanarFreehandROIAnnotation
) => void;
private renderOpenContourBeingEdited: (
enabledElement: Types.IEnabledElement,
svgDrawingHelper: SVGDrawingHelper,
annotation: PlanarFreehandROIAnnotation
) => void;
constructor(
toolProps: PublicToolProps = {},
defaultToolProps: ToolProps = {
supportedInteractionTypes: ['Mouse', 'Touch'],
configuration: {
shadow: true,
preventHandleOutsideImage: false,
/**
* Specify which modifier key is used to add a hole to a contour. The
* modifier must be pressed when the first point of a new contour is added.
*/
contourHoleAdditionModifierKey: KeyboardBindings.Shift,
alwaysRenderOpenContourHandles: {
// When true, always render end points when you have an open contour, rather
// than just rendering a line.
enabled: false,
// When enabled, use this radius to draw the endpoints whilst not hovering.
radius: 2,
},
allowOpenContours: true,
// Proximity in canvas coordinates used to join contours.
closeContourProximity: 10,
// The proximity at which we fallback to the simplest grabbing logic for
// determining what index of the contour to start editing.
checkCanvasEditFallbackProximity: 6,
// For closed contours, make them clockwise
// This can be useful if contours are compared between slices, eg for
// interpolation, and does not cause problems otherwise so defaulting to true.
makeClockWise: true,
// The relative distance that points should be dropped along the polyline
// in units of the image pixel spacing. A value of 1 means that nodes must
// be placed no closed than the image spacing apart. A value of 4 means that 4
// nodes should be placed within the space of one image pixel size. A higher
// value gives more finesse to the tool/smoother lines, but the value cannot
// be infinite as the lines become very computationally expensive to draw.
subPixelResolution: 4,
/**
* Smoothing is used to remove jagged irregularities in the polyline,
* as opposed to interpolation, which is used to create new polylines
* between existing polylines.
*/
smoothing: {
smoothOnAdd: false,
smoothOnEdit: false, // used for edit only
knotsRatioPercentageOnAdd: 40,
knotsRatioPercentageOnEdit: 40,
},
/**
* Interpolation is the creation of new segmentations in between the
* existing segmentations/indices. Note that this does not apply to
* ROI values, since those annotations are individual annotations, not
* connected in any way to each other, whereas segmentations are intended
* to be connected 2d + 1 dimension (time or space or other) volumes.
*/
interpolation: {
enabled: false,
// Callback to update the annotation or perform other action when the
// interpolation is complete.
onInterpolationComplete: null,
},
/**
* The polyline may get processed in order to reduce the number of points
* for better performance and storage.
*/
decimate: {
enabled: false,
/** A maximum given distance 'epsilon' to decide if a point should or
* shouldn't be added the resulting polyline which will have a lower
* number of points for higher `epsilon` values.
*/
epsilon: 0.1,
},
calculateStats: true,
getTextLines: defaultGetTextLines,
statsCalculator: BasicStatsCalculator,
},
}
) {
super(toolProps, defaultToolProps);
// Register event loops and rendering logic, which are stored in different
// Files due to their complexity/size.
registerDrawLoop(this);
registerEditLoopCommon(this);
registerClosedContourEditLoop(this);
registerOpenContourEditLoop(this);
registerOpenContourEndEditLoop(this);
registerRenderMethods(this);
this._throttledCalculateCachedStats = throttle(
this._calculateCachedStats,
100,
{ trailing: true }
);
}
/**
* Based on the current position of the mouse and the current image, creates
* a `PlanarFreehandROIAnnotation` and stores it in the annotationManager.
*
* @param evt - `EventTypes.NormalizedMouseEventType`
* @returns The `PlanarFreehandROIAnnotation` object.
*/
addNewAnnotation = (
evt: EventTypes.InteractionEventType
): PlanarFreehandROIAnnotation => {
const eventDetail = evt.detail;
const { element } = eventDetail;
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
const annotation = this.createAnnotation(
evt
) as PlanarFreehandROIAnnotation;
this.addAnnotation(annotation, element);
const viewportIdsToRender = getViewportIdsWithToolToRender(
element,
this.getToolName()
);
this.activateDraw(evt, annotation, viewportIdsToRender);
evt.preventDefault();
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
return annotation;
};
/**
* Begins an edit of an open contour, when the mouse has selected a handle
* (end) of the open contour.
*
* @param evt - `EventTypes.MouseDownEventType`
* @param annotation - `PlanarFreehandROIAnnotation` annotation.
* @param handle - The handle index, 0 for the start and 1 for the end.
* @param interactionType - interaction type (mouse, touch)
*/
handleSelectedCallback = (
evt: EventTypes.InteractionEventType,
annotation: PlanarFreehandROIAnnotation,
handle: ToolHandle
): void => {
const eventDetail = evt.detail;
const { element } = eventDetail;
const viewportIdsToRender = getViewportIdsWithToolToRender(
element,
this.getToolName()
);
this.activateOpenContourEndEdit(
evt,
annotation,
viewportIdsToRender,
handle
);
};
/**
* Edits the open or closed contour when the line is grabbed and dragged.
*/
toolSelectedCallback = (
evt: EventTypes.InteractionEventType,
annotation: PlanarFreehandROIAnnotation
): void => {
const eventDetail = evt.detail;
const { element } = eventDetail;
const viewportIdsToRender = getViewportIdsWithToolToRender(
element,
this.getToolName()
);
if (annotation.data.contour.closed) {
this.activateClosedContourEdit(evt, annotation, viewportIdsToRender);
} else {
this.activateOpenContourEdit(evt, annotation, viewportIdsToRender);
}
evt.preventDefault();
};
/**
* Returns if the canvas point is near the line of the given annotation in the
* provided element or not. A proximity is passed to the function to determine the
* proximity of the point to the annotation in number of pixels.
*
* @param element - HTML Element
* @param annotation - The `PlanarFreehandROIAnnotation`.
* @param canvasCoords - Canvas coordinates
* @param proximity - Proximity to tool to consider
* @returns Boolean, whether the canvas point is near tool
*/
isPointNearTool = (
element: HTMLDivElement,
annotation: PlanarFreehandROIAnnotation,
canvasCoords: Types.Point2,
proximity: number
): boolean => {
const enabledElement = getEnabledElement(element);
const { viewport } = enabledElement;
const { polyline: points } = annotation.data.contour;
// NOTE: It is implemented this way so that we do not double calculate
// points when number crunching adjacent line segments.
let previousPoint = viewport.worldToCanvas(points[0]);
for (let i = 1; i < points.length; i++) {
const p1 = previousPoint;
const p2 = viewport.worldToCanvas(points[i]);
const canProject = pointCanProjectOnLine(canvasCoords, p1, p2, proximity);
if (canProject) {
return true;
}
previousPoint = p2;
}
if (!annotation.data.contour.closed) {
// Contour is open, don't check last point to first point.
return false;
}
// check last point to first point
const pStart = viewport.worldToCanvas(points[0]);
const pEnd = viewport.worldToCanvas(points[points.length - 1]);
return pointCanProjectOnLine(canvasCoords, pStart, pEnd, proximity);
};
public cancel = (element: HTMLDivElement): void => {
const isDrawing = this.isDrawing;
const isEditingOpen = this.isEditingOpen;
const isEditingClosed = this.isEditingClosed;
if (isDrawing) {
this.cancelDrawing(element);
} else if (isEditingOpen) {
this.cancelOpenContourEdit(element);
} else if (isEditingClosed) {
this.cancelClosedContourEdit(element);
}
};
/**
* @override We need to override this method as the tool doesn't always have
* `handles`, which means `filterAnnotationsForDisplay` fails inside
* `filterAnnotationsWithinSlice`.
*/
public filterInteractableAnnotationsForElement(
element: HTMLDivElement,
annotations: Annotations
): Annotations | undefined {
Iif (!annotations || !annotations.length) {
return;
}
const enabledElement = getEnabledElement(element);
const { viewport } = enabledElement;
let annotationsToDisplay;
Iif (viewport instanceof VolumeViewport) {
const camera = viewport.getCamera();
const { spacingInNormalDirection } =
csUtils.getTargetVolumeAndSpacingInNormalDir(viewport, camera);
// Get data with same normal and within the same slice
annotationsToDisplay = this.filterAnnotationsWithinSlice(
annotations,
camera,
spacingInNormalDirection
);
} else {
// Use the default `filterAnnotationsForDisplay` utility, as the stack
// path doesn't require handles.
annotationsToDisplay = filterAnnotationsForDisplay(viewport, annotations);
}
return annotationsToDisplay;
}
/**
* Altered version of the `utilities.planar.filterAnnotationsWithinSlice`,
* which uses the polyline position rather than the handle. As the polyline is
* always present.
*/
private filterAnnotationsWithinSlice(
annotations: Annotations,
camera: Types.ICamera,
spacingInNormalDirection: number
): Annotations {
const { viewPlaneNormal } = camera;
const annotationsWithParallelNormals = annotations.filter(
(td: Annotation) => {
const annotationViewPlaneNormal = td.metadata.viewPlaneNormal;
const isParallel =
Math.abs(vec3.dot(viewPlaneNormal, annotationViewPlaneNormal)) >
PARALLEL_THRESHOLD;
return annotationViewPlaneNormal && isParallel;
}
) as PlanarFreehandROIAnnotation[];
// No in plane annotations.
if (!annotationsWithParallelNormals.length) {
return [];
}
// Annotation should be within the slice, which means that it should be between
// camera's focalPoint +/- spacingInNormalDirection.
const halfSpacingInNormalDirection = spacingInNormalDirection / 2;
const { focalPoint } = camera;
const annotationsWithinSlice = [];
for (const annotation of annotationsWithParallelNormals) {
const data = annotation.data;
const point = data.contour.polyline[0];
if (!annotation.isVisible) {
continue;
}
// A = point
// B = focal point
// P = normal
// B-A dot P => Distance in the view direction.
// this should be less than half the slice distance.
const dir = vec3.create();
vec3.sub(dir, focalPoint, point);
const dot = vec3.dot(dir, viewPlaneNormal);
if (Math.abs(dot) < halfSpacingInNormalDirection) {
annotationsWithinSlice.push(annotation);
}
}
return annotationsWithinSlice;
}
protected isContourSegmentationTool(): boolean {
// Disable contour segmentation behavior because it shall be activated only
// for PlanarFreehandContourSegmentationTool
return false;
}
protected createAnnotation(evt: EventTypes.InteractionEventType): Annotation {
const worldPos = evt.detail.currentPoints.world;
const contourAnnotation = super.createAnnotation(evt);
const onInterpolationComplete = (annotation) => {
// Clear out the handles because they aren't used for straight freeform
annotation.data.handles.points.length = 0;
};
const annotation = <PlanarFreehandROIAnnotation>csUtils.deepMerge(
contourAnnotation,
{
data: {
contour: {
polyline: [<Types.Point3>[...worldPos]],
},
label: '',
cachedStats: {},
},
onInterpolationComplete,
}
);
return annotation;
}
protected getAnnotationStyle(context) {
// This method exists only because `super` cannot be called from
// _getRenderingOptions() which is in an external file.
return super.getAnnotationStyle(context);
}
protected renderAnnotationInstance(
renderContext: AnnotationRenderContext
): boolean {
const { enabledElement, targetId, svgDrawingHelper } = renderContext;
const annotation = renderContext.annotation as PlanarFreehandROIAnnotation;
let renderStatus = false;
const { viewport, renderingEngine } = enabledElement;
const isDrawing = this.isDrawing;
const isEditingOpen = this.isEditingOpen;
const isEditingClosed = this.isEditingClosed;
Iif (!(isDrawing || isEditingOpen || isEditingClosed)) {
// No annotations are currently being modified, so we can just use the
// render contour method to render all of them
this.renderContour(enabledElement, svgDrawingHelper, annotation);
} else {
// The active annotation will need special rendering treatment. Render all
// other annotations not being interacted with using the standard renderContour
// rendering path.
const activeAnnotationUID = this.commonData.annotation.annotationUID;
if (annotation.annotationUID === activeAnnotationUID) {
Iif (isDrawing) {
this.renderContourBeingDrawn(
enabledElement,
svgDrawingHelper,
annotation
);
} else if (isEditingClosed) {
this.renderClosedContourBeingEdited(
enabledElement,
svgDrawingHelper,
annotation
);
} else Eif (isEditingOpen) {
this.renderOpenContourBeingEdited(
enabledElement,
svgDrawingHelper,
annotation
);
} else {
throw new Error(
`Unknown ${this.getToolName()} annotation rendering state`
);
}
} else E{
this.renderContour(enabledElement, svgDrawingHelper, annotation);
}
// Todo: return boolean flag for each rendering route in the planar tool.
renderStatus = true;
}
Iif (!this.configuration.calculateStats) {
return;
}
this._calculateStatsIfActive(
annotation,
targetId,
viewport,
renderingEngine,
enabledElement
);
this._renderStats(annotation, viewport, enabledElement, svgDrawingHelper);
return renderStatus;
}
_calculateStatsIfActive(
annotation: PlanarFreehandROIAnnotation,
targetId: string,
viewport,
renderingEngine,
enabledElement
) {
const activeAnnotationUID = this.commonData?.annotation.annotationUID;
Eif (
annotation.annotationUID === activeAnnotationUID &&
!this.commonData?.movingTextBox
) {
return;
}
if (!this.commonData?.movingTextBox) {
const { data } = annotation;
if (
!data.cachedStats[targetId] ||
data.cachedStats[targetId].areaUnit == null
) {
data.cachedStats[targetId] = {
Modality: null,
area: null,
max: null,
mean: null,
stdDev: null,
areaUnit: null,
};
this._calculateCachedStats(
annotation,
viewport,
renderingEngine,
enabledElement
);
} else if (annotation.invalidated) {
this._throttledCalculateCachedStats(
annotation,
viewport,
renderingEngine,
enabledElement
);
}
}
}
private _calculateCachedStats = (
annotation,
viewport,
renderingEngine,
enabledElement
) => {
const { data } = annotation;
const { cachedStats } = data;
const { polyline: points, closed } = data.contour;
const targetIds = Object.keys(cachedStats);
for (let i = 0; i < targetIds.length; i++) {
const targetId = targetIds[i];
const image = this.getTargetIdImage(targetId, renderingEngine);
// If image does not exists for the targetId, skip. This can be due
// to various reasons such as if the target was a volumeViewport, and
// the volumeViewport has been decached in the meantime.
if (!image) {
continue;
}
const { imageData, metadata } = image;
const canvasCoordinates = points.map((p) => viewport.worldToCanvas(p));
// Using an arbitrary start point (canvasPoint), calculate the
// mm spacing for the canvas in the X and Y directions.
const canvasPoint = canvasCoordinates[0];
const originalWorldPoint = viewport.canvasToWorld(canvasPoint);
const deltaXPoint = viewport.canvasToWorld([
canvasPoint[0] + 1,
canvasPoint[1],
]);
const deltaYPoint = viewport.canvasToWorld([
canvasPoint[0],
canvasPoint[1] + 1,
]);
const deltaInX = vec3.distance(originalWorldPoint, deltaXPoint);
const deltaInY = vec3.distance(originalWorldPoint, deltaYPoint);
const worldPosIndex = csUtils.transformWorldToIndex(imageData, points[0]);
worldPosIndex[0] = Math.floor(worldPosIndex[0]);
worldPosIndex[1] = Math.floor(worldPosIndex[1]);
worldPosIndex[2] = Math.floor(worldPosIndex[2]);
let iMin = worldPosIndex[0];
let iMax = worldPosIndex[0];
let jMin = worldPosIndex[1];
let jMax = worldPosIndex[1];
let kMin = worldPosIndex[2];
let kMax = worldPosIndex[2];
for (let j = 1; j < points.length; j++) {
const worldPosIndex = csUtils.transformWorldToIndex(
imageData,
points[j]
);
worldPosIndex[0] = Math.floor(worldPosIndex[0]);
worldPosIndex[1] = Math.floor(worldPosIndex[1]);
worldPosIndex[2] = Math.floor(worldPosIndex[2]);
iMin = Math.min(iMin, worldPosIndex[0]);
iMax = Math.max(iMax, worldPosIndex[0]);
jMin = Math.min(jMin, worldPosIndex[1]);
jMax = Math.max(jMax, worldPosIndex[1]);
kMin = Math.min(kMin, worldPosIndex[2]);
kMax = Math.max(kMax, worldPosIndex[2]);
}
const worldPosIndex2 = csUtils.transformWorldToIndex(
imageData,
points[1]
);
worldPosIndex2[0] = Math.floor(worldPosIndex2[0]);
worldPosIndex2[1] = Math.floor(worldPosIndex2[1]);
worldPosIndex2[2] = Math.floor(worldPosIndex2[2]);
const { scale, areaUnits } = getCalibratedLengthUnitsAndScale(
image,
() => {
const polyline = data.contour.polyline;
const numPoints = polyline.length;
const projectedPolyline = new Array(numPoints);
for (let i = 0; i < numPoints; i++) {
projectedPolyline[i] = viewport.worldToCanvas(polyline[i]);
}
const {
maxX: canvasMaxX,
maxY: canvasMaxY,
minX: canvasMinX,
minY: canvasMinY,
} = math.polyline.getAABB(projectedPolyline);
const topLeftBBWorld = viewport.canvasToWorld([
canvasMinX,
canvasMinY,
]);
const topLeftBBIndex = csUtils.transformWorldToIndex(
imageData,
topLeftBBWorld
);
const bottomRightBBWorld = viewport.canvasToWorld([
canvasMaxX,
canvasMaxY,
]);
const bottomRightBBIndex = csUtils.transformWorldToIndex(
imageData,
bottomRightBBWorld
);
return [topLeftBBIndex, bottomRightBBIndex];
}
);
let area = polyline.getArea(canvasCoordinates) / scale / scale;
// Convert from canvas_pixels ^2 to mm^2
area *= deltaInX * deltaInY;
// Expand bounding box
const iDelta = 0.01 * (iMax - iMin);
const jDelta = 0.01 * (jMax - jMin);
const kDelta = 0.01 * (kMax - kMin);
iMin = Math.floor(iMin - iDelta);
iMax = Math.ceil(iMax + iDelta);
jMin = Math.floor(jMin - jDelta);
jMax = Math.ceil(jMax + jDelta);
kMin = Math.floor(kMin - kDelta);
kMax = Math.ceil(kMax + kDelta);
const boundsIJK = [
[iMin, iMax],
[jMin, jMax],
[kMin, kMax],
] as [Types.Point2, Types.Point2, Types.Point2];
const worldPosEnd = imageData.indexToWorld([iMax, jMax, kMax]);
const canvasPosEnd = viewport.worldToCanvas(worldPosEnd);
let curRow = 0;
let intersections = [];
let intersectionCounter = 0;
const pointsInShape = pointInShapeCallback(
imageData,
(pointLPS, pointIJK) => {
let result = true;
const point = viewport.worldToCanvas(pointLPS);
if (point[1] != curRow) {
intersectionCounter = 0;
curRow = point[1];
intersections = getLineSegmentIntersectionsCoordinates(
canvasCoordinates,
point,
[canvasPosEnd[0], point[1]]
);
intersections.sort(
(function (index) {
return function (a, b) {
return a[index] === b[index]
? 0
: a[index] < b[index]
? -1
: 1;
};
})(0)
);
}
if (intersections.length && point[0] > intersections[0][0]) {
intersections.shift();
intersectionCounter++;
}
if (intersectionCounter % 2 === 0) {
result = false;
}
return result;
},
this.configuration.statsCalculator.statsCallback,
boundsIJK
);
const modalityUnitOptions = {
isPreScaled: isViewportPreScaled(viewport, targetId),
isSuvScaled: this.isSuvScaled(
viewport,
targetId,
annotation.metadata.referencedImageId
),
};
const modalityUnit = getModalityUnit(
metadata.Modality,
annotation.metadata.referencedImageId,
modalityUnitOptions
);
const stats = this.configuration.statsCalculator.getStatistics();
cachedStats[targetId] = {
Modality: metadata.Modality,
area,
perimeter: calculatePerimeter(canvasCoordinates, closed),
mean: stats.mean?.value,
max: stats.max?.value,
stdDev: stats.stdDev?.value,
statsArray: stats.array,
pointsInShape: pointsInShape,
areaUnit: areaUnits,
modalityUnit,
};
}
triggerAnnotationModified(
annotation,
enabledElement.viewport.element,
ChangeTypes.StatsUpdated
);
annotation.invalidated = false;
return cachedStats;
};
private _renderStats = (
annotation,
viewport,
enabledElement,
svgDrawingHelper
) => {
const { data } = <PlanarFreehandROIAnnotation>annotation;
const targetId = this.getTargetId(viewport);
const styleSpecifier: AnnotationStyle.StyleSpecifier = {
toolGroupId: this.toolGroupId,
toolName: this.getToolName(),
viewportId: enabledElement.viewport.id,
};
const options = this.getLinkedTextBoxStyle(styleSpecifier, annotation);
Iif (!options.visibility) {
return;
}
const textLines = this.configuration.getTextLines(data, targetId);
Eif (!textLines || textLines.length === 0) {
return;
}
const canvasCoordinates = data.contour.polyline.map((p) =>
viewport.worldToCanvas(p)
);
if (!data.handles.textBox.hasMoved) {
const canvasTextBoxCoords = getTextBoxCoordsCanvas(canvasCoordinates);
data.handles.textBox.worldPosition =
viewport.canvasToWorld(canvasTextBoxCoords);
}
const textBoxPosition = viewport.worldToCanvas(
data.handles.textBox.worldPosition
);
const textBoxUID = '1';
const boundingBox = drawLinkedTextBox(
svgDrawingHelper,
annotation.annotationUID ?? '',
textBoxUID,
textLines,
textBoxPosition,
canvasCoordinates,
{},
options
);
const { x: left, y: top, width, height } = boundingBox;
data.handles.textBox.worldBoundingBox = {
topLeft: viewport.canvasToWorld([left, top]),
topRight: viewport.canvasToWorld([left + width, top]),
bottomLeft: viewport.canvasToWorld([left, top + height]),
bottomRight: viewport.canvasToWorld([left + width, top + height]),
};
};
}
function defaultGetTextLines(data, targetId): string[] {
const cachedVolumeStats = data.cachedStats[targetId];
const {
area,
mean,
stdDev,
perimeter,
max,
isEmptyArea,
areaUnit,
modalityUnit,
} = cachedVolumeStats || {};
const textLines: string[] = [];
Iif (area) {
const areaLine = isEmptyArea
? `Area: Oblique not supported`
: `Area: ${roundNumber(area)} ${areaUnit}`;
textLines.push(areaLine);
}
Iif (mean) {
textLines.push(`Mean: ${roundNumber(mean)} ${modalityUnit}`);
}
Iif (max) {
textLines.push(`Max: ${roundNumber(max)} ${modalityUnit}`);
}
Iif (stdDev) {
textLines.push(`Std Dev: ${roundNumber(stdDev)} ${modalityUnit}`);
}
Iif (perimeter) {
textLines.push(`Perimeter: ${roundNumber(perimeter)} ${modalityUnit}`);
}
return textLines;
}
PlanarFreehandROITool.toolName = 'PlanarFreehandROI';
export default PlanarFreehandROITool;
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