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Handles.DrawLine

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public static void DrawLine(Vector3 p1, Vector3 p2);

Description

Draw a line from p1 to p2.


Draw Line in the Scene View.

// Draw lines to the connected game objects that a script has.
// If the target object doesnt have any game objects attached
// then it draws a line from the object to (0, 0, 0).

using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(ConnectedObjectsExampleScript))]
class ConnectLineHandleExampleScript : Editor
{
    void OnSceneGUI()
    {
        ConnectedObjectsExampleScript connectedObjects = target as ConnectedObjectsExampleScript;
        if (connectedObjects.objs == null)
            return;

        Vector3 center = connectedObjects.transform.position;
        for (int i = 0; i < connectedObjects.objs.Length; i++)
        {
            GameObject connectedObject = connectedObjects.objs[i];
            if (connectedObject)
            {
                Handles.DrawLine(center, connectedObject.transform.position);
            }
            else
            {
                Handles.DrawLine(center, Vector3.zero);
            }
        }
    }
}

And the script attached to this Handle:

using UnityEngine;

public class ConnectedObjectsExampleScript : MonoBehaviour
{
    public GameObject[] objs = null;
}

Is something described here not working as you expect it to? It might be a Known Issue. Please check with the Issue Tracker at issuetracker.unity3d.com.

Copyright © 2020 Unity Technologies. Publication Date: 2020-06-05.
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