Insanely huge initial commit

Assets/Extensions/Feel/MMTools/Tools/MMExtensions/MMRendererExtensions.cs

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+using UnityEngine;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine.UI;
+
+namespace MoreMountains.Tools
+{
+	/// <summary>
+	/// Renderer extensions
+	/// </summary>
+	public static class RendererExtensions
+	{
+		/// <summary>
+		/// Returns true if a renderer is visible from a camera
+		/// </summary>
+		/// <param name="renderer"></param>
+		/// <param name="camera"></param>
+		/// <returns></returns>
+		public static bool MMIsVisibleFrom(this Renderer renderer, Camera camera)
+		{
+			Plane[] frustumPlanes = GeometryUtility.CalculateFrustumPlanes(camera);
+			return GeometryUtility.TestPlanesAABB(frustumPlanes, renderer.bounds);
+		}
+	}
+}