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import type { Types } from '@cornerstonejs/core';
import {
addAnnotation,
getAnnotations,
getChildAnnotations,
} from '../../stateManagement/annotation/annotationState';
import type {
Annotation,
ContourAnnotation,
EventTypes,
PublicToolProps,
ToolProps,
SVGDrawingHelper,
AnnotationRenderContext,
} from '../../types';
import { drawPath as drawPathSvg } from '../../drawingSvg';
import { StyleSpecifier } from '../../types/AnnotationStyle';
import AnnotationTool from './AnnotationTool';
import { updateContourPolyline } from '../../utilities/contours/';
import { getContourHolesDataCanvas } from '../../utilities/contours';
import { ContourWindingDirection } from '../../types/ContourAnnotation';
/**
* A contour base class responsible for rendering contour instances such as
* spline, freehand and livewire.
*/
abstract class ContourBaseTool extends AnnotationTool {
constructor(toolProps: PublicToolProps, defaultToolProps: ToolProps) {
super(toolProps, defaultToolProps);
}
/**
* it is used to draw the annotation in each request animation frame. It
* calculates the updated cached statistics if data is invalidated and cache it.
* @param enabledElement - The Cornerstone's enabledElement.
* @param svgDrawingHelper - The svgDrawingHelper providing the context for drawing.
*/
public renderAnnotation(
enabledElement: Types.IEnabledElement,
svgDrawingHelper: SVGDrawingHelper
): boolean {
let renderStatus = false;
const { viewport } = enabledElement;
const { element } = viewport;
// If rendering engine has been destroyed while rendering
Iif (!viewport.getRenderingEngine()) {
console.warn('Rendering Engine has been destroyed');
return renderStatus;
}
let annotations = getAnnotations(this.getToolName(), element);
if (!annotations?.length) {
return renderStatus;
}
annotations = this.filterInteractableAnnotationsForElement(
element,
annotations
);
if (!annotations?.length) {
return renderStatus;
}
const targetId = this.getTargetId(viewport);
const styleSpecifier: StyleSpecifier = {
toolGroupId: this.toolGroupId,
toolName: this.getToolName(),
viewportId: enabledElement.viewport.id,
};
for (let i = 0; i < annotations.length; i++) {
const annotation = annotations[i] as Annotation;
styleSpecifier.annotationUID = annotation.annotationUID;
const annotationStyle = this.getAnnotationStyle({
annotation,
styleSpecifier,
});
Iif (!annotationStyle.visibility) {
continue;
}
const annotationRendered = this.renderAnnotationInstance({
enabledElement,
targetId,
annotation,
annotationStyle,
svgDrawingHelper,
});
renderStatus ||= annotationRendered;
annotation.invalidated = false;
}
return renderStatus;
}
protected createAnnotation(evt: EventTypes.InteractionEventType): Annotation {
const eventDetail = evt.detail;
const { currentPoints, element } = eventDetail;
const { world: worldPos } = currentPoints;
const enabledElement = getEnabledElement(element);
const { viewport } = enabledElement;
const camera = viewport.getCamera();
const { viewPlaneNormal, viewUp, position: cameraPosition } = camera;
const referencedImageId = this.getReferencedImageId(
viewport,
worldPos,
viewPlaneNormal,
viewUp
);
const viewReference = viewport.getViewReference({ points: [worldPos] });
return <ContourAnnotation>{
highlighted: true,
invalidated: true,
metadata: {
toolName: this.getToolName(),
...viewReference,
referencedImageId,
viewUp,
cameraPosition,
},
data: {
handles: {
points: [],
activeHandleIndex: null,
textBox: {
hasMoved: false,
worldPosition: <Types.Point3>[0, 0, 0],
worldBoundingBox: {
topLeft: <Types.Point3>[0, 0, 0],
topRight: <Types.Point3>[0, 0, 0],
bottomLeft: <Types.Point3>[0, 0, 0],
bottomRight: <Types.Point3>[0, 0, 0],
},
},
},
contour: {
polyline: [],
closed: false,
},
},
interpolationUID: '',
autoGenerated: false,
};
}
/**
* Add the annotation to the annotation manager.
* @param annotation - Contour annotation that is being added
* @param element - HTMLDivElement
*/
protected addAnnotation(
annotation: Annotation,
element: HTMLDivElement
): string {
// Just to give a chance for child classes to override it
return addAnnotation(annotation, element);
}
/**
* Cancel an annotation when drawing.
* @param annotation - Contour annotation that is being added
* @param element - HTMLDivElement
*/
// eslint-disable-next-line @typescript-eslint/no-unused-vars
protected cancelAnnotation(annotation: Annotation): void {
// noop method just to give a chance for child classes to override it
}
/**
* Move an annotation and all its child annotations in a recursive way.
*
* That is useful when clicking on a spline contour to completely translate
* it to a different place. In that case all holes (child annotations) must
* also be translated too.
*
* @param annotation - Annotation
* @param worldPosDelta - Delta in world space
*/
protected moveAnnotation(
annotation: Annotation,
worldPosDelta: Types.Point3
): void {
const { points } = annotation.data.handles;
for (let i = 0, numPoints = points.length; i < numPoints; i++) {
const point = points[i];
point[0] += worldPosDelta[0];
point[1] += worldPosDelta[1];
point[2] += worldPosDelta[2];
}
annotation.invalidated = true;
getChildAnnotations(annotation).forEach((childAnnotation) =>
this.moveAnnotation(childAnnotation, worldPosDelta)
);
}
protected updateContourPolyline(
annotation: ContourAnnotation,
polylineData: {
points: Types.Point2[];
closed?: boolean;
targetWindingDirection?: ContourWindingDirection;
},
transforms: {
canvasToWorld: (point: Types.Point2) => Types.Point3;
}
) {
const decimateConfig = this.configuration?.decimate || {};
updateContourPolyline(annotation, polylineData, transforms, {
decimate: {
enabled: !!decimateConfig.enabled,
epsilon: decimateConfig.epsilon,
},
});
}
/**
* Get polyline points in world space.
* Just to give a chance for child classes to override it.
* @param annotation - Contour annotation
* @returns Polyline points in world space
*/
protected getPolylinePoints(annotation: ContourAnnotation): Types.Point3[] {
// Attention: `contour.polyline` is the new way to store a polyline but it
// may be undefined because it was `data.polyline` before (fallback)
return annotation.data.contour?.polyline ?? annotation.data.polyline;
}
/**
* Render a contour segmentation instance
*/
protected renderAnnotationInstance(
renderContext: AnnotationRenderContext
): boolean {
const { enabledElement, annotationStyle, svgDrawingHelper } = renderContext;
const annotation = renderContext.annotation as ContourAnnotation;
// Do not render the contour because it must be rendered by the parent annotation
if (annotation.parentAnnotationUID) {
return;
}
const { annotationUID } = annotation;
const { viewport } = enabledElement;
const { worldToCanvas } = viewport;
const polylineCanvasPoints = this.getPolylinePoints(annotation).map(
(point) => worldToCanvas(point)
);
const { lineWidth, lineDash, color, fillColor, fillOpacity } =
annotationStyle;
const childContours = getContourHolesDataCanvas(annotation, viewport);
const allContours = [polylineCanvasPoints, ...childContours];
drawPathSvg(
svgDrawingHelper,
annotationUID,
'contourPolyline',
allContours,
{
color,
lineDash,
lineWidth: Math.max(0.1, lineWidth),
fillColor: fillColor,
fillOpacity,
}
);
return true;
}
}
export { ContourBaseTool as default, ContourBaseTool };
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