using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class QuadCreator : MonoBehaviour
{
        public float width = 1;
        public float height = 1;

        public void Start()
        {
            MeshRenderer meshRenderer = gameObject.AddComponent<MeshRenderer>();
            meshRenderer.sharedMaterial = new Material(Shader.Find("Standard"));

            MeshFilter meshFilter = gameObject.AddComponent<MeshFilter>();

            Mesh mesh = new Mesh();

            Vector3[] vertices = new Vector3[4]
            {
            new Vector3(0, 0, 0),
            new Vector3(width, 0, 0),
            new Vector3(0, height, 0),
            new Vector3(width, height, 0)
            };
            mesh.vertices = vertices;

            int[] tris = new int[6]
            {
            // lower left triangle
            0, 2, 1,
            // upper right triangle
            2, 3, 1
            };
            mesh.triangles = tris;

            Vector3[] normals = new Vector3[4]
            {
            -Vector3.forward,
            -Vector3.forward,
            -Vector3.forward,
            -Vector3.forward
            };
            mesh.normals = normals;

            Vector2[] uv = new Vector2[4]
            {
            new Vector2(0, 0),
            new Vector2(1, 0),
            new Vector2(0, 1),
            new Vector2(1, 1)
            };
            mesh.uv = uv;

            meshFilter.mesh = mesh;
        }
}