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Handles.DrawBezier

public static void DrawBezier(Vector3 startPosition, Vector3 endPosition, Vector3 startTangent, Vector3 endTangent, Color color, Texture2D texture, float width);

Parameters

startPosition The start point of the bezier line.
endPosition The end point of the bezier line.
startTangent The start tangent of the bezier line.
endTangent The end tangent of the bezier line.
color The color to use for the bezier line.
texture The texture to use for drawing the bezier line.
width The width of the bezier line.

Description

Draw textured bezier line through start and end points with the given tangents.

To get an anti-aliased effect use a texture that is 1x2 pixels with one transparent white pixel and one opaque white pixel. The bezier curve will be swept using this texture.

Note: Use HandleUtility.GetHandleSize if you want the handle to always remain the same size on the screen.


Bezier Line in the Scene View.

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

using UnityEngine;
using UnityEditor;

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

		Handles.DrawBezier( t.transform.position, Vector3.zero, Vector3.up,	-Vector3.up,
							Color.white, null, HandleUtility.GetHandleSize( Vector3.zero ) );
	}
}

...and place this script on the GameObject you wish to draw the Bezier from:

using UnityEngine;
          
[ExecuteInEditMode]
public class DummyBezier : MonoBehaviour
{
	public void Start( )
	{
		Debug.Log( "I have a Bezier curve handle attached!" );
	}
}
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