Can I draw Mesh in EditorWindow OnGUI?

Questions & Answers
1

I’m planning to create 2d tool on Unity(which can deform sprite).
It isn’t enough GUI.DrawTexture because i want to create deform feature.

Is there a way to draw Mesh in EditorWindow?

2

I use Gizmos:

using UnityEngine;
using System.Collections;

[ExecuteInEditMode]
public class DrawMesh : MonoBehaviour {
    public Mesh aMesh; // set in Inspector or via script
    public Material mat; // set in Inspector or via script
    void OnDrawGizmos()
    {
        mat.SetPass(0);
        Graphics.DrawMeshNow(aMesh,
       		 Matrix4x4.TRS(transform.position,transform.rotation,transform.localScale));
    }
}

But you could try putting the SetPass and DrawMeshNow in OnGUI, but check that Event.current is Repaint and your position, rotation, scale is up to you.