@foblex/flow
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An Angular library designed to simplify the creation and manipulation of dynamic flow. Provides components for flows, nodes, and connections, automating node manipulation and inter-node connections.
35 lines • 6.38 kB
JavaScript
export class CalculateConnectionCenterHandler {
handle(request) {
const { points } = request;
let totalDistance = 0;
let distances = [];
for (let i = 0; i < points.length - 1; i++) {
const distance = this.calculateDistance(points[i], points[i + 1]);
distances.push(distance);
totalDistance += distance;
}
let accumulatedDistance = 0;
let centerIndex = 0;
const halfTotalDistance = totalDistance / 2;
for (let i = 0; i < distances.length; i++) {
accumulatedDistance += distances[i];
if (accumulatedDistance >= halfTotalDistance) {
centerIndex = i;
break;
}
}
const remainingDistanceToCenter = halfTotalDistance - (accumulatedDistance - distances[centerIndex]);
return this.findPointAtDistance(points[centerIndex], points[centerIndex + 1], remainingDistanceToCenter);
}
calculateDistance(pointA, pointB) {
return Math.sqrt(Math.pow(pointB.x - pointA.x, 2) + Math.pow(pointB.y - pointA.y, 2));
}
findPointAtDistance(startPoint, endPoint, distance) {
const totalDistance = this.calculateDistance(startPoint, endPoint);
const ratio = distance / totalDistance;
const x = (1 - ratio) * startPoint.x + ratio * endPoint.x;
const y = (1 - ratio) * startPoint.y + ratio * endPoint.y;
return { x, y };
}
}
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