How to find the closest node to the tip of the connecting line in version 5x

[verron16]

How to find the closest node to the tip of the connecting line in version 5x

[petercat-assistant[bot]]

To find the closest node to the tip of a connecting line in AntV G6 version 5.x, you can follow these general steps:

1. Access the Graph Instance: Make sure you have access to the graph instance where the nodes and edges are defined.

2. Get the Edge's Target Point: Identify the edge for which you want to find the closest node to its tip. You can get the target point (end point) of the edge.

3. Calculate Distances: Iterate through all the nodes in the graph and calculate the distance from each node to the target point of the edge.

4. Find the Closest Node: Compare the distances and find the node with the smallest distance to the target point.

Here's a basic example of how you might implement this:

// Assuming `graph` is your G6 graph instance
const edges = graph.getEdges();
const nodes = graph.getNodes();

// Function to calculate distance between two points
function calculateDistance(point1, point2) {
  const dx = point1.x - point2.x;
  const dy = point1.y - point2.y;
  return Math.sqrt(dx * dx + dy * dy);
}

// Iterate over each edge
edges.forEach(edge => {
  const targetPoint = edge.getTarget().getModel(); // Get the target point of the edge

  let closestNode = null;
  let minDistance = Infinity;

  // Iterate over each node to find the closest one
  nodes.forEach(node => {
    const nodePoint = node.getModel();
    const distance = calculateDistance(targetPoint, nodePoint);

    if (distance < minDistance) {
      minDistance = distance;
      closestNode = node;
    }
  });

  console.log('Closest node to the edge tip:', closestNode);
});

This code snippet assumes you have a graph instance with nodes and edges. It calculates the Euclidean distance from each node to the target point of each edge and identifies the closest node.

If you need more specific guidance or have a particular scenario in mind, feel free to provide additional details!