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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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 8410x 1x 1x 1x 1x | import { vec3 } from 'gl-matrix';
import { utilities as csUtils } from '@cornerstonejs/core';
import type { Types } from '@cornerstonejs/core';
import {
getCanvasEllipseCorners,
precalculatePointInEllipse,
} from '../../../utilities/math/ellipse';
import { getBoundingBoxAroundShapeIJK } from '../../../utilities/boundingBox';
import BrushStrategy from './BrushStrategy';
import type { Composition, InitializedOperationData } from './BrushStrategy';
import type { CanvasCoordinates } from '../../../types';
import { StrategyCallbacks } from '../../../enums';
import compositions from './compositions';
import { pointInSphere } from '../../../utilities/math/sphere';
const { transformWorldToIndex, isEqual } = csUtils;
const initializeCircle = {
[StrategyCallbacks.Initialize]: (operationData: InitializedOperationData) => {
const {
points, // bottom, top, left, right
imageVoxelManager: imageVoxelManager,
viewport,
segmentationImageData,
segmentationVoxelManager: segmentationVoxelManager,
} = operationData;
// Happens on a preview setup
if (!points) {
return;
}
// Average the points to get the center of the ellipse
const center = vec3.fromValues(0, 0, 0);
points.forEach((point) => {
vec3.add(center, center, point);
});
vec3.scale(center, center, 1 / points.length);
operationData.centerWorld = center as Types.Point3;
operationData.centerIJK = transformWorldToIndex(
segmentationImageData,
center as Types.Point3
);
const canvasCoordinates = points.map((p) =>
viewport.worldToCanvas(p)
) as CanvasCoordinates;
// 1. From the drawn tool: Get the ellipse (circle) topLeft and bottomRight
// corners in canvas coordinates
const [topLeftCanvas, bottomRightCanvas] =
getCanvasEllipseCorners(canvasCoordinates);
// 2. Find the extent of the ellipse (circle) in IJK index space of the image
const topLeftWorld = viewport.canvasToWorld(topLeftCanvas);
const bottomRightWorld = viewport.canvasToWorld(bottomRightCanvas);
const circleCornersIJK = points.map((world) => {
return transformWorldToIndex(segmentationImageData, world);
});
// get the bounds from the circle points since in oblique images the
// circle will not be axis aligned
const boundsIJK = getBoundingBoxAroundShapeIJK(
circleCornersIJK,
segmentationImageData.getDimensions()
);
segmentationVoxelManager.boundsIJK = boundsIJK;
imageVoxelManager.isInObject = createPointInEllipse({
topLeftWorld,
bottomRightWorld,
center,
});
},
} as Composition;
/**
* Creates a function that tells the user if the provided point in LPS space
* is inside the ellipse.
*
* This will return a sphere test function if the bounds are a circle or
* sphere shape (same radius in two or three dimensions), or an elliptical shape
* if they differ.
*/
function createPointInEllipse(worldInfo: {
topLeftWorld: Types.Point3;
bottomRightWorld: Types.Point3;
center: Types.Point3 | vec3;
}) {
const { topLeftWorld, bottomRightWorld, center } = worldInfo;
const xRadius = Math.abs(topLeftWorld[0] - bottomRightWorld[0]) / 2;
const yRadius = Math.abs(topLeftWorld[1] - bottomRightWorld[1]) / 2;
const zRadius = Math.abs(topLeftWorld[2] - bottomRightWorld[2]) / 2;
const radius = Math.max(xRadius, yRadius, zRadius);
Eif (
isEqual(xRadius, radius) &&
isEqual(yRadius, radius) &&
isEqual(zRadius, radius)
) {
const sphereObj = {
center,
radius,
radius2: radius * radius,
};
return (pointLPS) => pointInSphere(sphereObj, pointLPS);
}
// using circle as a form of ellipse
const ellipseObj = {
center: center as Types.Point3,
xRadius,
yRadius,
zRadius,
};
const { precalculated } = precalculatePointInEllipse(ellipseObj, {});
return precalculated;
}
const CIRCLE_STRATEGY = new BrushStrategy(
'Circle',
compositions.regionFill,
compositions.setValue,
initializeCircle,
compositions.determineSegmentIndex,
compositions.preview
);
const CIRCLE_THRESHOLD_STRATEGY = new BrushStrategy(
'CircleThreshold',
compositions.regionFill,
compositions.setValue,
initializeCircle,
compositions.determineSegmentIndex,
compositions.dynamicThreshold,
compositions.threshold,
compositions.preview,
compositions.islandRemoval
);
/**
* Fill inside the circular region segment inside the segmentation defined by the operationData.
* It fills the segmentation pixels inside the defined circle.
* @param enabledElement - The element for which the segment is being erased.
* @param operationData - EraseOperationData
*/
const fillInsideCircle = CIRCLE_STRATEGY.strategyFunction;
/**
* Fill inside the circular region segment inside the segmentation defined by the operationData.
* It fills the segmentation pixels inside the defined circle.
* @param enabledElement - The element for which the segment is being erased.
* @param operationData - EraseOperationData
*/
const thresholdInsideCircle = CIRCLE_THRESHOLD_STRATEGY.strategyFunction;
/**
* Fill outside the circular region segment inside the segmentation defined by the operationData.
* It fills the segmentation pixels outside the defined circle.
* @param enabledElement - The element for which the segment is being erased.
* @param operationData - EraseOperationData
*/
export function fillOutsideCircle(): void {
throw new Error('Not yet implemented');
}
export {
CIRCLE_STRATEGY,
CIRCLE_THRESHOLD_STRATEGY,
fillInsideCircle,
thresholdInsideCircle,
createPointInEllipse as createEllipseInPoint,
};
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