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import { Events } from '../../enums';
import { getEnabledElement } from '@cornerstonejs/core';
import type { Types } from '@cornerstonejs/core';
import { AnnotationTool } from '../base';
import throttle from '../../utilities/throttle';
import {
addAnnotation,
getAnnotations,
removeAnnotation,
} from '../../stateManagement/annotation/annotationState';
import { isAnnotationLocked } from '../../stateManagement/annotation/annotationLocking';
import {
triggerAnnotationCompleted,
triggerAnnotationModified,
} from '../../stateManagement/annotation/helpers/state';
import * as lineSegment from '../../utilities/math/line';
import angleBetweenLines from '../../utilities/math/angle/angleBetweenLines';
import { midPoint2 } from '../../utilities/math/midPoint';
import {
drawHandles as drawHandlesSvg,
drawLine as drawLineSvg,
drawLinkedTextBox as drawLinkedTextBoxSvg,
drawTextBox as drawTextBoxSvg,
} from '../../drawingSvg';
import { state } from '../../store';
import { getViewportIdsWithToolToRender } from '../../utilities/viewportFilters';
import { getTextBoxCoordsCanvas } from '../../utilities/drawing';
import triggerAnnotationRenderForViewportIds from '../../utilities/triggerAnnotationRenderForViewportIds';
import {
resetElementCursor,
hideElementCursor,
} from '../../cursors/elementCursor';
import {
EventTypes,
ToolHandle,
TextBoxHandle,
PublicToolProps,
ToolProps,
InteractionTypes,
SVGDrawingHelper,
} from '../../types';
import { CobbAngleAnnotation } from '../../types/ToolSpecificAnnotationTypes';
import { StyleSpecifier } from '../../types/AnnotationStyle';
class CobbAngleTool extends AnnotationTool {
static toolName;
public touchDragCallback: any;
public mouseDragCallback: any;
angleStartedNotYetCompleted: boolean;
_throttledCalculateCachedStats: any;
editData: {
annotation: any;
viewportIdsToRender: string[];
handleIndex?: number;
movingTextBox?: boolean;
newAnnotation?: boolean;
hasMoved?: boolean;
isNearFirstLine?: boolean;
isNearSecondLine?: boolean;
} | null;
isDrawing: boolean;
isHandleOutsideImage: boolean;
constructor(
toolProps: PublicToolProps = {},
defaultToolProps: ToolProps = {
supportedInteractionTypes: ['Mouse', 'Touch'],
configuration: {
shadow: true,
preventHandleOutsideImage: false,
getTextLines: defaultGetTextLines,
showArcLines: false,
},
}
) {
super(toolProps, defaultToolProps);
this._throttledCalculateCachedStats = throttle(
this._calculateCachedStats,
25,
{ trailing: true }
);
}
/**
* Based on the current position of the mouse and the current imageId to create
* a Length Annotation and stores it in the annotationManager
*
* @param evt - EventTypes.NormalizedMouseEventType
* @returns The annotation object.
*
*/
addNewAnnotation = (
evt: EventTypes.MouseDownActivateEventType
): CobbAngleAnnotation => {
Iif (this.angleStartedNotYetCompleted) {
return;
}
this.angleStartedNotYetCompleted = true;
const eventDetail = evt.detail;
const { currentPoints, element } = eventDetail;
const worldPos = currentPoints.world;
const enabledElement = getEnabledElement(element);
const { viewport, renderingEngine } = enabledElement;
hideElementCursor(element);
this.isDrawing = true;
const camera = viewport.getCamera();
const { viewPlaneNormal, viewUp } = camera;
const referencedImageId = this.getReferencedImageId(
viewport,
worldPos,
viewPlaneNormal,
viewUp
);
const FrameOfReferenceUID = viewport.getFrameOfReferenceUID();
const annotation = {
highlighted: true,
invalidated: true,
metadata: {
toolName: this.getToolName(),
viewPlaneNormal: <Types.Point3>[...viewPlaneNormal],
viewUp: <Types.Point3>[...viewUp],
FrameOfReferenceUID,
referencedImageId,
},
data: {
handles: {
points: [<Types.Point3>[...worldPos], <Types.Point3>[...worldPos]],
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],
},
},
},
label: '',
cachedStats: {},
},
};
addAnnotation(annotation, element);
const viewportIdsToRender = getViewportIdsWithToolToRender(
element,
this.getToolName()
);
this.editData = {
annotation,
viewportIdsToRender,
handleIndex: 1,
movingTextBox: false,
newAnnotation: true,
hasMoved: false,
};
this._activateDraw(element);
evt.preventDefault();
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
return annotation;
};
/**
* It returns if the canvas point is near the provided length 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 - Annotation
* @param canvasCoords - Canvas coordinates
* @param proximity - Proximity to tool to consider
* @returns Boolean, whether the canvas point is near tool
*/
isPointNearTool = (
element: HTMLDivElement,
annotation: CobbAngleAnnotation,
canvasCoords: Types.Point2,
proximity: number
): boolean => {
const enabledElement = getEnabledElement(element);
const { viewport } = enabledElement;
const { data } = annotation;
const { distanceToPoint, distanceToPoint2 } = this.distanceToLines({
viewport,
points: data.handles.points,
canvasCoords,
proximity,
});
Eif (distanceToPoint <= proximity || distanceToPoint2 <= proximity) {
return true;
}
return false;
};
toolSelectedCallback = (
evt: EventTypes.MouseDownEventType,
annotation: CobbAngleAnnotation,
interactionType: InteractionTypes,
canvasCoords: Types.Point2,
proximity = 6
): void => {
const eventDetail = evt.detail;
const { element } = eventDetail;
annotation.highlighted = true;
const viewportIdsToRender = getViewportIdsWithToolToRender(
element,
this.getToolName()
);
const enabledElement = getEnabledElement(element);
const { renderingEngine, viewport } = enabledElement;
const { isNearFirstLine, isNearSecondLine } = this.distanceToLines({
viewport,
points: annotation.data.handles.points,
canvasCoords,
proximity,
});
this.editData = {
annotation,
viewportIdsToRender,
movingTextBox: false,
isNearFirstLine,
isNearSecondLine,
};
this._activateModify(element);
hideElementCursor(element);
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
evt.preventDefault();
};
handleSelectedCallback(
evt: EventTypes.MouseDownEventType,
annotation: CobbAngleAnnotation,
handle: ToolHandle,
interactionType = 'mouse'
): void {
const eventDetail = evt.detail;
const { element } = eventDetail;
const { data } = annotation;
annotation.highlighted = true;
let movingTextBox = false;
let handleIndex;
Iif ((handle as TextBoxHandle).worldPosition) {
movingTextBox = true;
} else {
handleIndex = data.handles.points.findIndex((p) => p === handle);
}
// Find viewports to render on drag.
const viewportIdsToRender = getViewportIdsWithToolToRender(
element,
this.getToolName()
);
this.editData = {
annotation,
viewportIdsToRender,
handleIndex,
movingTextBox,
};
this._activateModify(element);
hideElementCursor(element);
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
evt.preventDefault();
}
_mouseUpCallback = (
evt: EventTypes.MouseUpEventType | EventTypes.MouseClickEventType
) => {
const eventDetail = evt.detail;
const { element } = eventDetail;
const { annotation, viewportIdsToRender, newAnnotation, hasMoved } =
this.editData;
const { data } = annotation;
if (newAnnotation && !hasMoved) {
// when user starts the drawing by click, and moving the mouse, instead
// of click and drag
return;
}
// If preventing new measurement means we are in the middle of an existing measurement
// we shouldn't deactivate modify or draw
if (this.angleStartedNotYetCompleted && data.handles.points.length < 4) {
resetElementCursor(element);
// adds the first point of the second line
this.editData.handleIndex = data.handles.points.length;
return;
}
this.angleStartedNotYetCompleted = false;
data.handles.activeHandleIndex = null;
this._deactivateModify(element);
this._deactivateDraw(element);
resetElementCursor(element);
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
Iif (
this.isHandleOutsideImage &&
this.configuration.preventHandleOutsideImage
) {
removeAnnotation(annotation.annotationUID);
}
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
if (newAnnotation) {
triggerAnnotationCompleted(annotation);
}
this.editData = null;
this.isDrawing = false;
};
/**
* Handles the mouse down for all points that follow the very first mouse down.
* The very first mouse down is handled by addAnnotation.
* This method ensures that the state of the tool is correct for the drawing of the second line segment.
* In particular it ensures that the second segment can be created via a mouse down and drag.
*/
_mouseDownCallback = (
evt: EventTypes.MouseUpEventType | EventTypes.MouseClickEventType
) => {
const { annotation, handleIndex } = this.editData;
const eventDetail = evt.detail;
const { element, currentPoints } = eventDetail;
const worldPos = currentPoints.world;
const { data } = annotation;
if (handleIndex === 1) {
// This is the mouse down for the second point of the first segment.
// The mouse up takes care of adding the first point of the second segment.
data.handles.points[1] = worldPos;
this.editData.hasMoved =
data.handles.points[1][0] !== data.handles.points[0][0] ||
data.handles.points[1][1] !== data.handles.points[0][0];
return;
}
if (handleIndex === 3) {
// This is the mouse down for the second point of the second segment (i.e. the last point)
data.handles.points[3] = worldPos;
this.editData.hasMoved =
data.handles.points[3][0] !== data.handles.points[2][0] ||
data.handles.points[3][1] !== data.handles.points[2][0];
this.angleStartedNotYetCompleted = false;
return;
}
// This is the first mouse down of the first point of the second line segment.
// It is as if we have not moved yet because Cobb Angle has two, disjoint sections, each with its own move.
this.editData.hasMoved = false;
hideElementCursor(element);
// Add the last segment points for the subsequent drag/mouse move.
data.handles.points[2] = data.handles.points[3] = worldPos;
this.editData.handleIndex = data.handles.points.length - 1;
};
_mouseDragCallback = (
evt: EventTypes.MouseDragEventType | EventTypes.MouseMoveEventType
) => {
this.isDrawing = true;
const eventDetail = evt.detail;
const { element } = eventDetail;
const {
annotation,
viewportIdsToRender,
handleIndex,
movingTextBox,
isNearFirstLine,
isNearSecondLine,
} = this.editData;
const { data } = annotation;
Iif (movingTextBox) {
// Drag mode - moving text box
const { deltaPoints } = eventDetail as EventTypes.MouseDragEventDetail;
const worldPosDelta = deltaPoints.world;
const { textBox } = data.handles;
const { worldPosition } = textBox;
worldPosition[0] += worldPosDelta[0];
worldPosition[1] += worldPosDelta[1];
worldPosition[2] += worldPosDelta[2];
textBox.hasMoved = true;
} else if (
handleIndex === undefined &&
(isNearFirstLine || isNearSecondLine)
) {
// select tool mode - moving annotation
const { deltaPoints } = eventDetail as EventTypes.MouseDragEventDetail;
const worldPosDelta = deltaPoints.world;
const points = data.handles.points;
// separate the logic for moving handles to move them separately
if (isNearFirstLine) {
const firstLinePoints = [points[0], points[1]];
firstLinePoints.forEach((point) => {
point[0] += worldPosDelta[0];
point[1] += worldPosDelta[1];
point[2] += worldPosDelta[2];
});
} else Eif (isNearSecondLine) {
const secondLinePoints = [points[2], points[3]];
secondLinePoints.forEach((point) => {
point[0] += worldPosDelta[0];
point[1] += worldPosDelta[1];
point[2] += worldPosDelta[2];
});
}
annotation.invalidated = true;
} else {
// Drag handle mode - after double click, and mouse move to draw
const { currentPoints } = eventDetail;
const worldPos = currentPoints.world;
data.handles.points[handleIndex] = [...worldPos];
annotation.invalidated = true;
}
this.editData.hasMoved = true;
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
};
cancel = (element: HTMLDivElement) => {
// If it is mid-draw or mid-modify
Iif (!this.isDrawing) {
return;
}
this.isDrawing = false;
this._deactivateDraw(element);
this._deactivateModify(element);
resetElementCursor(element);
const { annotation, viewportIdsToRender, newAnnotation } = this.editData;
const { data } = annotation;
Iif (data.handles.points.length < 4) {
// If it is mid-draw
removeAnnotation(annotation.annotationUID);
}
annotation.highlighted = false;
data.handles.activeHandleIndex = null;
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
Eif (newAnnotation) {
triggerAnnotationCompleted(annotation);
}
this.editData = null;
this.angleStartedNotYetCompleted = false;
return annotation.annotationUID;
};
_activateModify = (element: HTMLDivElement) => {
state.isInteractingWithTool = true;
element.addEventListener(
Events.MOUSE_UP,
this._mouseUpCallback as EventListener
);
element.addEventListener(
Events.MOUSE_DRAG,
this._mouseDragCallback as EventListener
);
element.addEventListener(
Events.MOUSE_CLICK,
this._mouseUpCallback as EventListener
);
// element.addEventListener(Events.TOUCH_END, this._mouseUpCallback)
// element.addEventListener(Events.TOUCH_DRAG, this._mouseDragCallback)
};
_deactivateModify = (element: HTMLDivElement) => {
state.isInteractingWithTool = false;
element.removeEventListener(
Events.MOUSE_UP,
this._mouseUpCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_DRAG,
this._mouseDragCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_CLICK,
this._mouseUpCallback as EventListener
);
// element.removeEventListener(Events.TOUCH_END, this._mouseUpCallback)
// element.removeEventListener(Events.TOUCH_DRAG, this._mouseDragCallback)
};
_activateDraw = (element: HTMLDivElement) => {
state.isInteractingWithTool = true;
element.addEventListener(
Events.MOUSE_UP,
this._mouseUpCallback as EventListener
);
element.addEventListener(
Events.MOUSE_DRAG,
this._mouseDragCallback as EventListener
);
element.addEventListener(
Events.MOUSE_MOVE,
this._mouseDragCallback as EventListener
);
element.addEventListener(
Events.MOUSE_CLICK,
this._mouseUpCallback as EventListener
);
element.addEventListener(
Events.MOUSE_DOWN,
this._mouseDownCallback as EventListener
);
// element.addEventListener(Events.TOUCH_END, this._mouseUpCallback)
// element.addEventListener(Events.TOUCH_DRAG, this._mouseDragCallback)
};
_deactivateDraw = (element: HTMLDivElement) => {
state.isInteractingWithTool = false;
element.removeEventListener(
Events.MOUSE_UP,
this._mouseUpCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_DRAG,
this._mouseDragCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_MOVE,
this._mouseDragCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_CLICK,
this._mouseUpCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_DOWN,
this._mouseDownCallback as EventListener
);
// element.removeEventListener(Events.TOUCH_END, this._mouseUpCallback)
// element.removeEventListener(Events.TOUCH_DRAG, this._mouseDragCallback)
};
/**
* it is used to draw the length 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.
*/
renderAnnotation = (
enabledElement: Types.IEnabledElement,
svgDrawingHelper: SVGDrawingHelper
): boolean => {
let renderStatus = false;
const { viewport } = enabledElement;
const { element } = viewport;
let annotations = getAnnotations(this.getToolName(), element);
// Todo: We don't need this anymore, filtering happens in triggerAnnotationRender
if (!annotations?.length) {
return renderStatus;
}
annotations = this.filterInteractableAnnotationsForElement(
element,
annotations
);
Iif (!annotations?.length) {
return renderStatus;
}
const targetId = this.getTargetId(viewport);
const renderingEngine = viewport.getRenderingEngine();
const styleSpecifier: StyleSpecifier = {
toolGroupId: this.toolGroupId,
toolName: this.getToolName(),
viewportId: enabledElement.viewport.id,
};
// Draw SVG
for (let i = 0; i < annotations.length; i++) {
const annotation = annotations[i] as CobbAngleAnnotation;
const { annotationUID, data } = annotation;
const { points, activeHandleIndex } = data.handles;
styleSpecifier.annotationUID = annotationUID;
const { color, lineWidth, lineDash } = this.getAnnotationStyle({
annotation,
styleSpecifier,
});
const canvasCoordinates = points.map((p) => viewport.worldToCanvas(p));
// WE HAVE TO CACHE STATS BEFORE FETCHING TEXT
if (
!data.cachedStats[targetId] ||
data.cachedStats[targetId].angle == null
) {
data.cachedStats[targetId] = {
angle: null,
arc1Angle: null,
arc2Angle: null,
points: {
world: {
arc1Start: null,
arc1End: null,
arc2Start: null,
arc2End: null,
arc1Angle: null,
arc2Angle: null,
},
canvas: {
arc1Start: null,
arc1End: null,
arc2Start: null,
arc2End: null,
arc1Angle: null,
arc2Angle: null,
},
},
};
this._calculateCachedStats(annotation, renderingEngine, enabledElement);
} else Iif (annotation.invalidated) {
this._throttledCalculateCachedStats(
annotation,
renderingEngine,
enabledElement
);
}
let activeHandleCanvasCoords;
Iif (
!isAnnotationLocked(annotation) &&
!this.editData &&
activeHandleIndex !== null
) {
// Not locked or creating and hovering over handle, so render handle.
activeHandleCanvasCoords = [canvasCoordinates[activeHandleIndex]];
}
// If rendering engine has been destroyed while rendering
Iif (!viewport.getRenderingEngine()) {
console.warn('Rendering Engine has been destroyed');
return renderStatus;
}
Iif (activeHandleCanvasCoords) {
const handleGroupUID = '0';
drawHandlesSvg(
svgDrawingHelper,
annotationUID,
handleGroupUID,
canvasCoordinates,
{
color,
lineDash,
lineWidth,
}
);
}
const firstLine = [canvasCoordinates[0], canvasCoordinates[1]] as [
Types.Point2,
Types.Point2
];
const secondLine = [canvasCoordinates[2], canvasCoordinates[3]] as [
Types.Point2,
Types.Point2
];
let lineUID = 'line1';
drawLineSvg(
svgDrawingHelper,
annotationUID,
lineUID,
firstLine[0],
firstLine[1],
{
color,
width: lineWidth,
lineDash,
}
);
renderStatus = true;
// Don't add the stats until annotation has 4 anchor points
if (canvasCoordinates.length < 4) {
return renderStatus;
}
lineUID = 'line2';
drawLineSvg(
svgDrawingHelper,
annotationUID,
lineUID,
secondLine[0],
secondLine[1],
{
color,
width: lineWidth,
lineDash,
}
);
lineUID = 'linkLine';
const mid1 = midPoint2(firstLine[0], firstLine[1]);
const mid2 = midPoint2(secondLine[0], secondLine[1]);
drawLineSvg(svgDrawingHelper, annotationUID, lineUID, mid1, mid2, {
color,
lineWidth: '1',
lineDash: '1,4',
});
// Calculating the arcs
const { arc1Start, arc1End, arc2End, arc2Start } =
data.cachedStats[targetId].points.canvas;
const { arc1Angle, arc2Angle } = data.cachedStats[targetId];
Iif (this.configuration.showArcLines) {
lineUID = 'arc1';
drawLineSvg(
svgDrawingHelper,
annotationUID,
lineUID,
arc1Start as Types.Point2,
arc1End as Types.Point2,
{
color,
lineWidth: '1',
}
);
lineUID = 'arc2';
drawLineSvg(
svgDrawingHelper,
annotationUID,
lineUID,
arc2Start as Types.Point2,
arc2End as Types.Point2,
{
color,
lineWidth: '1',
}
);
}
if (!data.cachedStats[targetId]?.angle) {
continue;
}
const options = this.getLinkedTextBoxStyle(styleSpecifier, annotation);
Iif (!options.visibility) {
data.handles.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],
},
};
continue;
}
const textLines = this.configuration.getTextLines(data, targetId);
Eif (!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 = 'cobbAngleText';
const boundingBox = drawLinkedTextBoxSvg(
svgDrawingHelper,
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]),
};
Iif (this.configuration.showArcLines) {
const arc1TextBoxUID = 'arcAngle1';
const arc1TextLine = [
`${arc1Angle.toFixed(2)} ${String.fromCharCode(176)}`,
];
const arch1TextPosCanvas = midPoint2(arc1Start, arc1End);
drawTextBoxSvg(
svgDrawingHelper,
annotationUID,
arc1TextBoxUID,
arc1TextLine,
arch1TextPosCanvas,
{
...options,
padding: 3,
}
);
const arc2TextBoxUID = 'arcAngle2';
const arc2TextLine = [
`${arc2Angle.toFixed(2)} ${String.fromCharCode(176)}`,
];
const arch2TextPosCanvas = midPoint2(arc2Start, arc2End);
drawTextBoxSvg(
svgDrawingHelper,
annotationUID,
arc2TextBoxUID,
arc2TextLine,
arch2TextPosCanvas,
{
...options,
padding: 3,
}
);
}
}
return renderStatus;
};
_calculateCachedStats(annotation, renderingEngine, enabledElement) {
const data = annotation.data;
// Until we have all four anchors bail out
if (data.handles.points.length !== 4) {
return;
}
const seg1: [Types.Point3, Types.Point3] = [null, null];
const seg2: [Types.Point3, Types.Point3] = [null, null];
let minDist = Number.MAX_VALUE;
// Order the endpoints of each line segment such that seg1[1] and seg2[0]
// are the closest (Euclidean distance-wise) to each other. Thus
// the angle formed between the vectors seg1[1]->seg1[0] and seg2[0]->seg[1]
// is calculated.
// The assumption here is that the Cobb angle line segments are drawn
// such that the segments intersect nearest the segment endpoints
// that are closest AND those closest endpoints are the tails of the
// vectors used to calculate the angle between the vectors/line segments.
for (let i = 0; i < 2; i += 1) {
for (let j = 2; j < 4; j += 1) {
const dist = vec3.distance(
data.handles.points[i],
data.handles.points[j]
);
if (dist < minDist) {
minDist = dist;
seg1[1] = data.handles.points[i];
seg1[0] = data.handles.points[(i + 1) % 2];
seg2[0] = data.handles.points[j];
seg2[1] = data.handles.points[2 + ((j - 1) % 2)];
}
}
}
const { viewport } = enabledElement;
const { element } = viewport;
const canvasPoints = data.handles.points.map((p) =>
viewport.worldToCanvas(p)
);
const firstLine = [canvasPoints[0], canvasPoints[1]] as [
Types.Point2,
Types.Point2
];
const secondLine = [canvasPoints[2], canvasPoints[3]] as [
Types.Point2,
Types.Point2
];
const mid1 = midPoint2(firstLine[0], firstLine[1]);
const mid2 = midPoint2(secondLine[0], secondLine[1]);
const { arc1Start, arc1End, arc2End, arc2Start, arc1Angle, arc2Angle } =
this.getArcsStartEndPoints({
firstLine,
secondLine,
mid1,
mid2,
});
const { cachedStats } = data;
const targetIds = Object.keys(cachedStats);
for (let i = 0; i < targetIds.length; i++) {
const targetId = targetIds[i];
cachedStats[targetId] = {
angle: angleBetweenLines(seg1, seg2),
arc1Angle,
arc2Angle,
points: {
canvas: {
arc1Start,
arc1End,
arc2End,
arc2Start,
},
world: {
arc1Start: viewport.canvasToWorld(arc1Start),
arc1End: viewport.canvasToWorld(arc1End),
arc2End: viewport.canvasToWorld(arc2End),
arc2Start: viewport.canvasToWorld(arc2Start),
},
},
};
}
annotation.invalidated = false;
// Dispatching annotation modified
triggerAnnotationModified(annotation, element);
return cachedStats;
}
distanceToLines = ({ viewport, points, canvasCoords, proximity }) => {
const [point1, point2, point3, point4] = points;
const canvasPoint1 = viewport.worldToCanvas(point1);
const canvasPoint2 = viewport.worldToCanvas(point2);
const canvasPoint3 = viewport.worldToCanvas(point3);
const canvasPoint4 = viewport.worldToCanvas(point4);
const line1 = {
start: {
x: canvasPoint1[0],
y: canvasPoint1[1],
},
end: {
x: canvasPoint2[0],
y: canvasPoint2[1],
},
};
const line2 = {
start: {
x: canvasPoint3[0],
y: canvasPoint3[1],
},
end: {
x: canvasPoint4[0],
y: canvasPoint4[1],
},
};
const distanceToPoint = lineSegment.distanceToPoint(
[line1.start.x, line1.start.y],
[line1.end.x, line1.end.y],
[canvasCoords[0], canvasCoords[1]]
);
const distanceToPoint2 = lineSegment.distanceToPoint(
[line2.start.x, line2.start.y],
[line2.end.x, line2.end.y],
[canvasCoords[0], canvasCoords[1]]
);
let isNearFirstLine = false;
let isNearSecondLine = false;
if (distanceToPoint <= proximity) {
isNearFirstLine = true;
} else Eif (distanceToPoint2 <= proximity) {
isNearSecondLine = true;
}
return {
distanceToPoint,
distanceToPoint2,
isNearFirstLine,
isNearSecondLine,
};
};
getArcsStartEndPoints = ({
firstLine,
secondLine,
mid1,
mid2,
}): {
arc1Start: Types.Point2;
arc1End: Types.Point2;
arc2Start: Types.Point2;
arc2End: Types.Point2;
arc1Angle: number;
arc2Angle: number;
} => {
const linkLine = [mid1, mid2] as [Types.Point2, Types.Point2];
const arc1Angle = angleBetweenLines(firstLine, linkLine);
const arc2Angle = angleBetweenLines(secondLine, linkLine);
const arc1Side = arc1Angle > 90 ? 1 : 0;
const arc2Side = arc2Angle > 90 ? 0 : 1;
const midLinkLine = midPoint2(linkLine[0], linkLine[1]);
const linkLineLength = Math.sqrt(
(linkLine[1][0] - linkLine[0][0]) ** 2 +
(linkLine[1][1] - linkLine[0][1]) ** 2
);
const ratio = 0.1; // 10% of the line length
const midFirstLine = midPoint2(firstLine[0], firstLine[1]);
const midSecondLine = midPoint2(secondLine[0], secondLine[1]);
// For arc1Start
const directionVectorStartArc1 = [
firstLine[arc1Side][0] - midFirstLine[0],
firstLine[arc1Side][1] - midFirstLine[1],
];
const magnitudeStartArc1 = Math.sqrt(
directionVectorStartArc1[0] ** 2 + directionVectorStartArc1[1] ** 2
);
const normalizedDirectionStartArc1 = [
directionVectorStartArc1[0] / magnitudeStartArc1,
directionVectorStartArc1[1] / magnitudeStartArc1,
];
const arc1Start = [
midFirstLine[0] +
normalizedDirectionStartArc1[0] * linkLineLength * ratio,
midFirstLine[1] +
normalizedDirectionStartArc1[1] * linkLineLength * ratio,
] as Types.Point2;
// Existing logic for arc1End
const directionVectorEndArc1 = [
midLinkLine[0] - mid1[0],
midLinkLine[1] - mid1[1],
];
const magnitudeEndArc1 = Math.sqrt(
directionVectorEndArc1[0] ** 2 + directionVectorEndArc1[1] ** 2
);
const normalizedDirectionEndArc1 = [
directionVectorEndArc1[0] / magnitudeEndArc1,
directionVectorEndArc1[1] / magnitudeEndArc1,
];
const arc1End = [
mid1[0] + normalizedDirectionEndArc1[0] * linkLineLength * ratio,
mid1[1] + normalizedDirectionEndArc1[1] * linkLineLength * ratio,
] as Types.Point2;
// Similar logic for arc2Start
const directionVectorStartArc2 = [
secondLine[arc2Side][0] - midSecondLine[0],
secondLine[arc2Side][1] - midSecondLine[1],
];
const magnitudeStartArc2 = Math.sqrt(
directionVectorStartArc2[0] ** 2 + directionVectorStartArc2[1] ** 2
);
const normalizedDirectionStartArc2 = [
directionVectorStartArc2[0] / magnitudeStartArc2,
directionVectorStartArc2[1] / magnitudeStartArc2,
];
const arc2Start = [
midSecondLine[0] +
normalizedDirectionStartArc2[0] * linkLineLength * ratio,
midSecondLine[1] +
normalizedDirectionStartArc2[1] * linkLineLength * ratio,
] as Types.Point2;
// Similar logic for arc2End
const directionVectorEndArc2 = [
midLinkLine[0] - mid2[0],
midLinkLine[1] - mid2[1],
];
const magnitudeEndArc2 = Math.sqrt(
directionVectorEndArc2[0] ** 2 + directionVectorEndArc2[1] ** 2
);
const normalizedDirectionEndArc2 = [
directionVectorEndArc2[0] / magnitudeEndArc2,
directionVectorEndArc2[1] / magnitudeEndArc2,
];
const arc2End = [
mid2[0] + normalizedDirectionEndArc2[0] * linkLineLength * ratio,
mid2[1] + normalizedDirectionEndArc2[1] * linkLineLength * ratio,
] as Types.Point2;
return {
arc1Start,
arc1End,
arc2Start,
arc2End,
arc1Angle: arc1Angle > 90 ? 180 - arc1Angle : arc1Angle,
arc2Angle: arc2Angle > 90 ? 180 - arc2Angle : arc2Angle,
};
};
}
function defaultGetTextLines(data, targetId): string[] {
const cachedVolumeStats = data.cachedStats[targetId];
const { angle } = cachedVolumeStats;
Iif (angle === undefined) {
return;
}
const textLines = [`${angle.toFixed(2)} ${String.fromCharCode(176)}`];
return textLines;
}
CobbAngleTool.toolName = 'CobbAngle';
export default CobbAngleTool;
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