using UnityEngine;

namespace UltimateWater.Internal
{
	public class Quads
	{
		private static Mesh _BipolarXY;

		private static Mesh _BipolarXInversedY;

		private static Mesh _BipolarXZ;

		private static bool _Initialized;

		public static Mesh BipolarXY
		{
			get
			{
				if (!_Initialized)
				{
					CreateMeshes();
				}
				return _BipolarXY;
			}
		}

		public static Mesh BipolarXInversedY
		{
			get
			{
				if (!_Initialized)
				{
					CreateMeshes();
				}
				return _BipolarXInversedY;
			}
		}

		public static Mesh BipolarXZ
		{
			get
			{
				if (!_Initialized)
				{
					CreateMeshes();
				}
				return _BipolarXZ;
			}
		}

		private static void CreateMeshes()
		{
			_BipolarXY = CreateBipolarXY(false);
			_BipolarXInversedY = CreateBipolarXY(SystemInfo.graphicsDeviceVersion.Contains("Direct3D"));
			_BipolarXZ = CreateBipolarXZ();
			_Initialized = true;
		}

		private static Mesh CreateBipolarXY(bool inversedY)
		{
			Mesh mesh = new Mesh();
			mesh.hideFlags = HideFlags.DontSave;
			mesh.vertices = new Vector3[4]
			{
				new Vector3(-1f, -1f, 0f),
				new Vector3(1f, -1f, 0f),
				new Vector3(1f, 1f, 0f),
				new Vector3(-1f, 1f, 0f)
			};
			mesh.uv = new Vector2[4]
			{
				new Vector2(0f, (!inversedY) ? 0f : 1f),
				new Vector2(1f, (!inversedY) ? 0f : 1f),
				new Vector2(1f, (!inversedY) ? 1f : 0f),
				new Vector2(0f, (!inversedY) ? 1f : 0f)
			};
			Mesh mesh2 = mesh;
			mesh2.SetTriangles(new int[6] { 0, 1, 2, 0, 2, 3 }, 0);
			mesh2.UploadMeshData(true);
			return mesh2;
		}

		private static Mesh CreateBipolarXZ()
		{
			Mesh mesh = new Mesh();
			mesh.name = "Shoreline Quad Mesh";
			mesh.hideFlags = HideFlags.DontSave;
			mesh.vertices = new Vector3[4]
			{
				new Vector3(-1f, 0f, -1f),
				new Vector3(-1f, 0f, 1f),
				new Vector3(1f, 0f, 1f),
				new Vector3(1f, 0f, -1f)
			};
			mesh.uv = new Vector2[4]
			{
				new Vector2(0f, 0f),
				new Vector2(0f, 1f),
				new Vector2(1f, 1f),
				new Vector2(1f, 0f)
			};
			Mesh mesh2 = mesh;
			mesh2.SetIndices(new int[4] { 0, 1, 2, 3 }, MeshTopology.Quads, 0);
			mesh2.UploadMeshData(true);
			return mesh2;
		}
	}
}