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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 | import areaOfPolygon from './areaOfPolygon';
import { PubSubService } from '@ohif/core';
const EVENTS = {
LABEL_UPDATED: 'labelUpdated',
GRAPHIC_UPDATED: 'graphicUpdated',
VIEW_UPDATED: 'viewUpdated',
REMOVED: 'removed',
};
/**
* Represents a single annotation for the Microscopy Viewer
*/
class RoiAnnotation extends PubSubService {
constructor(roiGraphic, studyInstanceUID, seriesInstanceUID, label = '', viewState = null) {
super(EVENTS);
this.uid = roiGraphic.uid;
this.roiGraphic = roiGraphic;
this.studyInstanceUID = studyInstanceUID;
this.seriesInstanceUID = seriesInstanceUID;
this.label = label;
this.viewState = viewState;
this.setMeasurements(roiGraphic);
}
getScoord3d() {
const roiGraphic = this.roiGraphic;
const roiGraphicSymbols = Object.getOwnPropertySymbols(roiGraphic);
const _scoord3d = roiGraphicSymbols.find(s => String(s) === 'Symbol(scoord3d)');
return roiGraphic[_scoord3d];
}
getCoordinates() {
const scoord3d = this.getScoord3d();
const scoord3dSymbols = Object.getOwnPropertySymbols(scoord3d);
const _coordinates = scoord3dSymbols.find(s => String(s) === 'Symbol(coordinates)');
const coordinates = scoord3d[_coordinates];
return coordinates;
}
/**
* When called will trigger the REMOVED event
*/
destroy() {
this._broadcastEvent(EVENTS.REMOVED, this);
}
/**
* Updates the ROI graphic for the annotation and triggers the GRAPHIC_UPDATED
* event
*
* @param {Object} roiGraphic
*/
setRoiGraphic(roiGraphic) {
this.roiGraphic = roiGraphic;
this.setMeasurements();
this._broadcastEvent(EVENTS.GRAPHIC_UPDATED, this);
}
/**
* Update ROI measurement values based on its scoord3d coordinates.
*
* @returns {void}
*/
setMeasurements() {
const type = this.roiGraphic.scoord3d.graphicType;
const coordinates = this.roiGraphic.scoord3d.graphicData;
switch (type) {
case 'ELLIPSE':
// This is a circle so only need one side
const point1 = coordinates[0];
const point2 = coordinates[1];
let xLength2 = point2[0] - point1[0];
let yLength2 = point2[1] - point1[1];
xLength2 *= xLength2;
yLength2 *= yLength2;
const length = Math.sqrt(xLength2 + yLength2);
const radius = length / 2;
const areaEllipse = Math.PI * radius * radius;
this._area = areaEllipse;
this._length = undefined;
break;
case 'POLYGON':
const areaPolygon = areaOfPolygon(coordinates);
this._area = areaPolygon;
this._length = undefined;
break;
case 'POINT':
this._area = undefined;
this._length = undefined;
break;
case 'POLYLINE':
let len = 0;
for (let i = 1; i < coordinates.length; i++) {
const p1 = coordinates[i - 1];
const p2 = coordinates[i];
let xLen = p2[0] - p1[0];
let yLen = p2[1] - p1[1];
xLen *= xLen;
yLen *= yLen;
len += Math.sqrt(xLen + yLen);
}
this._area = undefined;
this._length = len;
break;
}
}
/**
* Update the OpenLayer Map's view state for the annotation and triggers the
* VIEW_UPDATED event
*
* @param {Object} viewState The new view state for the annotation
*/
setViewState(viewState) {
this.viewState = viewState;
this._broadcastEvent(EVENTS.VIEW_UPDATED, this);
}
/**
* Update the label for the annotation and triggers the LABEL_UPDATED event
*
* @param {String} label New label for the annotation
*/
setLabel(label, finding) {
this.label = label || (finding && finding.CodeMeaning);
this.finding = finding || {
CodingSchemeDesignator: '@ohif/extension-dicom-microscopy',
CodeValue: label,
CodeMeaning: label,
};
this._broadcastEvent(EVENTS.LABEL_UPDATED, this);
}
/**
* Returns the geometry type of the annotation concatenated with the label
* defined for the annotation.
* Difference with getDetailedLabel() is that this will return empty string for empty
* label.
*
* @returns {String} Text with geometry type and label
*/
getLabel() {
const label = this.label ? `${this.label}` : '';
return label;
}
/**
* Returns the geometry type of the annotation concatenated with the label
* defined for the annotation
*
* @returns {String} Text with geometry type and label
*/
getDetailedLabel() {
const label = this.label ? `${this.label}` : '(empty)';
return label;
}
getLength() {
return this._length;
}
getArea() {
return this._area;
}
}
export { EVENTS };
export default RoiAnnotation;
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