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 | 44x 44x 44x 44x 44x 44x 44x 44x 44x 44x 44x 44x 44x 44x | import type { Types } from '@cornerstonejs/core';
import drawLine from './drawLine';
import findClosestPoint from '../utilities/math/vec2/findClosestPoint';
import { PlanarBoundingBox, SVGDrawingHelper } from '../types';
/**
* Draw a link between an annotation to a box.
*/
function drawLink(
svgDrawingHelper: SVGDrawingHelper,
annotationUID: string,
linkUID: string,
// Find closest point to approx. bounding box
annotationAnchorPoints: Array<Types.Point2>,
refPoint: Types.Point2,
// Find bounding box point that's closest to our identified
// start point
boundingBox: PlanarBoundingBox,
options = {}
): void {
// The closest anchor point (for the annotation) to the
// text box / bounding box
const start =
annotationAnchorPoints.length > 0
? findClosestPoint(annotationAnchorPoints, refPoint)
: refPoint;
// Calculate the midpoints of the bounding box
const boundingBoxPoints = _boundingBoxPoints(boundingBox);
// Find the closest textBox midpoint to the annotation's anchor/start point
const end = findClosestPoint(boundingBoxPoints, start);
// Finally we draw the dashed linking line
const mergedOptions = Object.assign(
{
color: 'rgb(255, 255, 0)',
lineWidth: '1',
lineDash: '2,3',
},
options
);
drawLine(
svgDrawingHelper,
annotationUID,
`link-${linkUID}`,
start,
end,
mergedOptions
);
}
/**
* Find potential anchor points for a given bounding box. For example, it may
* look nicer to draw a line from the "middle left" of a bounding box to an
* annotation (instead of from a corner). This function calculates those points
*
* @param boundingBox
*/
function _boundingBoxPoints(
boundingBox: PlanarBoundingBox
): Array<Types.Point2> {
const { x: left, y: top, height, width } = boundingBox;
const halfWidth = width / 2;
const halfHeight = height / 2;
const topMiddle = [left + halfWidth, top] as Types.Point2;
const leftMiddle = [left, top + halfHeight] as Types.Point2;
const bottomMiddle = [left + halfWidth, top + height] as Types.Point2;
const rightMiddle = [left + width, top + halfHeight] as Types.Point2;
return [topMiddle, leftMiddle, bottomMiddle, rightMiddle];
}
export default drawLink;
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