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export function getDistanceBW2Points(point1, point2, xAttr = 'x', yAttr = 'y') {
return Math.sqrt(Math.pow(point1[xAttr] - point2[xAttr], 2) + Math.pow(point1[yAttr] - point2[yAttr], 2));
}
/**
* Funtion to return nearest point of given pivot point.
* It return two points one nearest and other nearest but having both coorditanes smaller than the given point's coordinates.
*/
export function getNearestPoint(pivotPoint, points, xAttr = 'x', yAttr = 'y') {
var nearestPoint = {};
var nearestPointLte = {}; // Nearest point smaller than or equal to point
for (const point of points) {
if (typeof nearestPoint[xAttr] === 'undefined' || typeof nearestPoint[yAttr] === 'undefined') {
nearestPoint = point;
} else if (getDistanceBW2Points(point, pivotPoint, xAttr, yAttr) < getDistanceBW2Points(nearestPoint, pivotPoint, xAttr, yAttr)) {
// Check for bestImage
nearestPoint = point;
}
if (typeof nearestPointLte[xAttr] === 'undefined' || typeof nearestPointLte[yAttr] === 'undefined') {
if (point[xAttr] <= pivotPoint[xAttr] && point[yAttr] <= pivotPoint[yAttr]) {
nearestPointLte = point;
}
} else if (
// Check for bestImageLte
getDistanceBW2Points(point, pivotPoint, xAttr, yAttr) < getDistanceBW2Points(nearestPointLte, pivotPoint, xAttr, yAttr) &&
point[xAttr] <= pivotPoint[xAttr] && point[yAttr] <= pivotPoint[yAttr]
) {
nearestPointLte = point;
}
}
return {
nearestPoint,
nearestPointLte
};
}
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