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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 | 1x 1x | import { BaseTool } from './base';
import { Events } from '../enums';
import { getEnabledElement, StackViewport } from '@cornerstonejs/core';
import type { Types } from '@cornerstonejs/core';
import { EventTypes, PublicToolProps, ToolProps } from '../types';
import { getViewportIdsWithToolToRender } from '../utilities/viewportFilters';
import triggerAnnotationRenderForViewportIds from '../utilities/triggerAnnotationRenderForViewportIds';
import { state } from '../store';
import { Enums } from '@cornerstonejs/core';
import {
hideElementCursor,
resetElementCursor,
} from '../cursors/elementCursor';
import { IPoints } from '../types';
const MAGNIFY_VIEWPORT_ID = 'magnify-viewport';
class MagnifyTool extends BaseTool {
static toolName;
_bounds: any;
editData: {
referencedImageId: string;
viewportIdsToRender: string[];
enabledElement: Types.IEnabledElement;
renderingEngine: Types.IRenderingEngine;
currentPoints: IPoints;
} | null;
constructor(
toolProps: PublicToolProps = {},
defaultToolProps: ToolProps = {
supportedInteractionTypes: ['Mouse', 'Touch'],
configuration: {
magnifySize: 10, // parallel scale , higher more zoom
magnifyWidth: 250, //px
magnifyHeight: 250, //px
},
}
) {
super(toolProps, defaultToolProps);
}
private _hasBeenRemoved = false;
_getReferencedImageId(
viewport: Types.IStackViewport | Types.IVolumeViewport
): string {
const targetId = this.getTargetId(viewport);
let referencedImageId;
if (viewport instanceof StackViewport) {
referencedImageId = targetId.split('imageId:')[1];
}
return referencedImageId;
}
preMouseDownCallback = (evt: EventTypes.InteractionEventType) => {
const eventDetail = evt.detail;
const { element, currentPoints } = eventDetail;
const enabledElement = getEnabledElement(element);
const { viewport, renderingEngine } = enabledElement;
if (!(viewport instanceof StackViewport)) {
throw new Error('MagnifyTool only works on StackViewports');
}
const referencedImageId = this._getReferencedImageId(viewport);
if (!referencedImageId) {
throw new Error(
'MagnifyTool: No referenced image id found, reconstructed planes not supported yet'
);
}
const viewportIdsToRender = getViewportIdsWithToolToRender(
element,
this.getToolName()
);
this.editData = {
referencedImageId,
viewportIdsToRender,
enabledElement,
renderingEngine,
currentPoints,
};
this._createMagnificationViewport();
this._activateDraw(element);
hideElementCursor(element);
evt.preventDefault();
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
return true;
};
preTouchStartCallback = (evt: EventTypes.InteractionEventType) => {
this.preMouseDownCallback(evt);
};
_createMagnificationViewport = () => {
const {
enabledElement,
referencedImageId,
viewportIdsToRender,
renderingEngine,
currentPoints,
} = this.editData;
const { viewport } = enabledElement;
const { element } = viewport;
const viewportProperties = viewport.getProperties();
const { canvas: canvasPos, world: worldPos } = currentPoints;
let magnifyToolElement: HTMLDivElement;
magnifyToolElement = element.querySelector('.magnifyTool');
if (magnifyToolElement === null) {
const magnifyElement = document.createElement('div');
magnifyElement.classList.add('magnifyTool');
magnifyElement.style.display = 'block';
magnifyElement.style.width = `${this.configuration.magnifyWidth}px`;
magnifyElement.style.height = `${this.configuration.magnifyHeight}px`;
magnifyElement.style.position = 'absolute';
magnifyToolElement = magnifyElement;
const viewportElement = element.querySelector('.viewport-element');
viewportElement.appendChild(magnifyElement);
const viewportInput = {
viewportId: MAGNIFY_VIEWPORT_ID,
type: Enums.ViewportType.STACK,
element: magnifyToolElement as HTMLDivElement,
};
renderingEngine.enableElement(viewportInput);
}
// Todo: use CSS transform instead of setting top and left for better performance
magnifyToolElement.style.top = `${
canvasPos[1] - this.configuration.magnifyHeight / 2
}px`;
magnifyToolElement.style.left = `${
canvasPos[0] - this.configuration.magnifyWidth / 2
}px`;
const magnifyViewport = renderingEngine.getViewport(
MAGNIFY_VIEWPORT_ID
) as Types.IStackViewport;
magnifyViewport.setStack([referencedImageId]).then(() => {
if (this._hasBeenRemoved) {
return;
}
// match the original viewport voi range
magnifyViewport.setProperties(viewportProperties);
// Use the original viewport for the base for parallelScale
const { parallelScale } = viewport.getCamera();
const { focalPoint, position, viewPlaneNormal } =
magnifyViewport.getCamera();
const distance = Math.sqrt(
Math.pow(focalPoint[0] - position[0], 2) +
Math.pow(focalPoint[1] - position[1], 2) +
Math.pow(focalPoint[2] - position[2], 2)
);
const updatedFocalPoint = <Types.Point3>[
worldPos[0],
worldPos[1],
worldPos[2],
];
const updatedPosition = <Types.Point3>[
updatedFocalPoint[0] + distance * viewPlaneNormal[0],
updatedFocalPoint[1] + distance * viewPlaneNormal[1],
updatedFocalPoint[2] + distance * viewPlaneNormal[2],
];
magnifyViewport.setCamera({
parallelScale: parallelScale * (1 / this.configuration.magnifySize),
focalPoint: updatedFocalPoint,
position: updatedPosition,
});
magnifyViewport.render();
});
magnifyToolElement.style.display = 'block';
triggerAnnotationRenderForViewportIds(renderingEngine, viewportIdsToRender);
};
_dragCallback = (evt: EventTypes.InteractionEventType) => {
const eventDetail = evt.detail;
const { deltaPoints, element, currentPoints } = eventDetail;
const deltaPointsWorld = deltaPoints.world;
const canvasPos = currentPoints.canvas;
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
const magnifyViewport = renderingEngine.getViewport(MAGNIFY_VIEWPORT_ID);
const magnifyElement = element.querySelector(
'.magnifyTool'
) as HTMLDivElement;
if (!magnifyElement) {
return;
}
magnifyElement.style.top = `${
canvasPos[1] - this.configuration.magnifyHeight / 2
}px`;
magnifyElement.style.left = `${
canvasPos[0] - this.configuration.magnifyWidth / 2
}px`;
const { focalPoint, position } = magnifyViewport.getCamera();
const updatedPosition = <Types.Point3>[
position[0] + deltaPointsWorld[0],
position[1] + deltaPointsWorld[1],
position[2] + deltaPointsWorld[2],
];
const updatedFocalPoint = <Types.Point3>[
focalPoint[0] + deltaPointsWorld[0],
focalPoint[1] + deltaPointsWorld[1],
focalPoint[2] + deltaPointsWorld[2],
];
magnifyViewport.setCamera({
focalPoint: updatedFocalPoint,
position: updatedPosition,
});
magnifyViewport.render();
};
_dragEndCallback = (evt: EventTypes.InteractionEventType) => {
const { element } = evt.detail;
const enabledElement = getEnabledElement(element);
const { renderingEngine } = enabledElement;
renderingEngine.disableElement(MAGNIFY_VIEWPORT_ID);
const viewportElement = element.querySelector('.viewport-element');
const magnifyToolElement = viewportElement.querySelector(
'.magnifyTool'
) as HTMLDivElement;
viewportElement.removeChild(magnifyToolElement);
this._deactivateDraw(element);
resetElementCursor(element);
this._hasBeenRemoved = true;
};
_activateDraw = (element: HTMLDivElement) => {
state.isInteractingWithTool = true;
this._hasBeenRemoved = false;
element.addEventListener(
Events.MOUSE_UP,
this._dragEndCallback as EventListener
);
element.addEventListener(
Events.MOUSE_DRAG,
this._dragCallback as EventListener
);
element.addEventListener(
Events.MOUSE_CLICK,
this._dragEndCallback as EventListener
);
element.addEventListener(
Events.TOUCH_END,
this._dragEndCallback as EventListener
);
element.addEventListener(
Events.TOUCH_DRAG,
this._dragCallback as EventListener
);
};
_deactivateDraw = (element: HTMLDivElement) => {
state.isInteractingWithTool = false;
element.removeEventListener(
Events.MOUSE_UP,
this._dragEndCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_DRAG,
this._dragCallback as EventListener
);
element.removeEventListener(
Events.MOUSE_CLICK,
this._dragEndCallback as EventListener
);
element.removeEventListener(
Events.TOUCH_END,
this._dragEndCallback as EventListener
);
element.removeEventListener(
Events.TOUCH_DRAG,
this._dragCallback as EventListener
);
};
}
MagnifyTool.toolName = 'Magnify';
export default MagnifyTool;
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