Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 1x | import type { Types } from '@cornerstonejs/core';
import { utilities as csUtils } from '@cornerstonejs/core';
import LivewireContourTool from './LivewireContourTool';
import { LivewirePath } from '../../utilities/livewire/LiveWirePath';
import { triggerAnnotationModified } from '../../stateManagement/annotation/helpers/state';
import { ChangeTypes } from '../../enums';
import type { ContourSegmentationAnnotation } from '../../types';
import { drawPolyline as drawPolylineSvg } from '../../drawingSvg';
class LivewireContourSegmentationTool extends LivewireContourTool {
static toolName;
/**
* Updates the interpolated annotations with the currently displayed image data,
* performing hte livewire on the image data as generated.
* Note - this function is only called for interpolated livewire SEGMENTATION
* objects, and will return immediately otherwise.
*
* The work for the interpolation is performed in a microtask, enabling this
* method to return quickly for faster render speeds, but ensuring that the
* annotation data isn't updated before the changes are performed. The removes
* some irritating flickering on navigation.
*/
public updateInterpolatedAnnotation(
annotation: ContourSegmentationAnnotation,
enabledElement: Types.IEnabledElement
) {
// The interpolation sources is used as a flag here - a true livewire
// behaviour would be to perform a livewire between the two planes
// closest to this plane for each point, and use that handle. That is
// oblique, however, which is not currently supported.
if (
this.editData ||
!annotation.invalidated ||
!annotation.data.handles.interpolationSources
) {
return;
}
annotation.data.contour.originalPolyline = annotation.data.contour.polyline;
// See docs above for why this is a microtask
queueMicrotask(() => {
if (!annotation.data.handles.interpolationSources) {
return;
}
const { points } = annotation.data.handles;
const { element } = enabledElement.viewport;
this.setupBaseEditData(points[0], element, annotation);
const { length: count } = points;
const { scissors } = this;
const { nearestEdge, repeatInterpolation } =
this.configuration.interpolation;
annotation.data.handles.originalPoints = points;
const { worldToSlice, sliceToWorld } = this.editData;
const handleSmoothing = [];
// New path generation - go through the handles and regenerate the polyline
if (nearestEdge) {
let lastPoint = worldToSlice(points[points.length - 1]);
// Nearest edge handling
points.forEach((point, hIndex) => {
const testPoint = worldToSlice(point);
lastPoint = testPoint;
handleSmoothing.push(testPoint);
// Fill the costs buffer and then find the minimum cost
// This is a little too aggressive about pulling the line in
scissors.startSearch(lastPoint);
scissors.findPathToPoint(testPoint);
// Fill the costs for a point a bit further along by searching for a
// point further along.
scissors.findPathToPoint(
worldToSlice(points[(hIndex + 3) % points.length])
);
const minPoint = scissors.findMinNearby(testPoint, nearestEdge);
if (!csUtils.isEqual(testPoint, minPoint)) {
handleSmoothing[hIndex] = minPoint;
lastPoint = minPoint;
points[hIndex] = sliceToWorld(minPoint);
}
});
}
// Regenerate the updated data based on the updated handles
const acceptedPath = new LivewirePath();
for (let i = 0; i < count; i++) {
scissors.startSearch(worldToSlice(points[i]));
const path = scissors.findPathToPoint(
worldToSlice(points[(i + 1) % count])
);
acceptedPath.addPoints(path);
}
// Now, update the rendering
this.updateAnnotation(acceptedPath);
this.scissors = null;
this.scissorsRight = null;
this.editData = null;
annotation.data.handles.interpolationSources = null;
if (repeatInterpolation) {
triggerAnnotationModified(
annotation,
enabledElement.viewport.element,
ChangeTypes.InterpolationUpdated
);
}
});
}
/**
* Adds the update to the interpolated annotaiton on render an instance,
* but otherwise just calls the parent render annotation instance.
*/
protected renderAnnotationInstance(renderContext): boolean {
const { enabledElement, svgDrawingHelper } = renderContext;
const annotation =
renderContext.annotation as ContourSegmentationAnnotation;
const { annotationUID } = annotation;
const { viewport } = enabledElement;
const { worldToCanvas } = viewport;
const { showInterpolationPolyline } =
this.configuration.interpolation || {};
this.updateInterpolatedAnnotation?.(annotation, enabledElement);
const { originalPolyline } = annotation.data.contour;
const rendered = super.renderAnnotationInstance(renderContext);
if (
showInterpolationPolyline &&
originalPolyline &&
annotation.autoGenerated
) {
const polylineCanvasPoints = originalPolyline.map(
worldToCanvas
) as Types.Point2[];
polylineCanvasPoints.push(polylineCanvasPoints[0]);
drawPolylineSvg(
svgDrawingHelper,
annotationUID,
'interpolationContour-0',
polylineCanvasPoints,
{
color: '#70ffff',
lineWidth: 1,
fillOpacity: 0,
}
);
}
return rendered;
}
protected isContourSegmentationTool(): boolean {
// Re-enable contour segmentation behavior disabled by LivewireContourTool
return true;
}
}
LivewireContourSegmentationTool.toolName = 'LivewireContourSegmentationTool';
export default LivewireContourSegmentationTool;
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