Handles.DrawAAConvexPolygon

Parámetros

Descripción

Draw anti-aliased convex polygon specified with point array.

The following example uses DrawAAConvexPolygon to draw an arrow between two objects in the Scene view.

To use this example, save the following script in the Assets/Editor folder:

using UnityEngine;
using UnityEditor;

[CustomEditor(typeof(DrawArrow))]
public class DrawArrowEditor : Editor
{
    void OnSceneGUI()
    {
        DrawArrow   t = target as DrawArrow;

        if (t == null || t.From == null || t.To == null)
            return;

        Vector3[]   arrowHead = new Vector3[3];
        Vector3[]   arrowLine = new Vector3[2];
        Vector3     start = t.From.transform.position;
        Vector3     end = t.To.transform.position;

        Vector3     forward = (end - start).normalized;
        Vector3     right = Vector3.Cross(Vector3.up, forward).normalized;
        float       size = HandleUtility.GetHandleSize(end);
        float       width = size * 0.1f;
        float       height = size * 0.3f;

        arrowHead[0] = end;
        arrowHead[1] = end - forward * height + right * width;
        arrowHead[2] = end - forward * height - right * width;

        arrowLine[0] = start;
        arrowLine[1] = end - forward * height;

        Handles.color = Color.red;
        Handles.DrawAAPolyLine(arrowLine);
        Handles.DrawAAConvexPolygon(arrowHead);
    }
}

...and attach the following script to a GameObject in the Scene. Drag and drop GameObjects onto the From and To inspectors, corresponding to the GameObjects where you would like to see the arrow drawn:

using UnityEngine;

[ExecuteInEditMode]
public class DrawArrow : MonoBehaviour
{
    public GameObject From, To;
}