// Draws a simple triangle with UVs

function Start () {
    gameObject.AddComponent("MeshFilter");
    gameObject.AddComponent("MeshRenderer");
    var mesh : Mesh = GetComponent(MeshFilter).mesh;

    // Clears all the data that the mesh can contain previously.
    mesh.Clear();

    mesh.vertices = [Vector3(0,0,0), Vector3(0,1,0), Vector3(1, 1, 0)];
    mesh.uv = [Vector2 (0, 0), Vector2 (0, 1), Vector2 (1, 1)];
    mesh.triangles = [0, 1, 2];
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    void Start() {
        gameObject.AddComponent("MeshFilter");
        gameObject.AddComponent("MeshRenderer");
        Mesh mesh = GetComponent<MeshFilter>().mesh;
        mesh.Clear();
        mesh.vertices = new Vector3[] {new Vector3(0, 0, 0), new Vector3(0, 1, 0), new Vector3(1, 1, 0)};
        mesh.uv = new Vector2[] {new Vector2(0, 0), new Vector2(0, 1), new Vector2(1, 1)};
        mesh.triangles = new int[] {0, 1, 2};
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    def Start():
        gameObject.AddComponent('MeshFilter')
        gameObject.AddComponent('MeshRenderer')
        mesh as Mesh = GetComponent[of MeshFilter]().mesh
        mesh.Clear()
        mesh.vertices = (Vector3(0, 0, 0), Vector3(0, 1, 0), Vector3(1, 1, 0))
        mesh.uv = (Vector2(0, 0), Vector2(0, 1), Vector2(1, 1))
        mesh.triangles = (0, 1, 2)