Implement perspective rotation (#11821)

Xamarin.Forms.Platform.Tizen/Extensions/EvasMapExtensions.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Runtime.InteropServices;
+using ElmSharp;
+
+namespace Xamarin.Forms.Platform.Tizen
+{
+	public static class EvasMapExtensions
+	{
+		public static void Perspective3D(this EvasMap map, int px, int py, int z0, int foc)
+		{
+			var mapType = typeof(EvasMap);
+			var propInfo = mapType.GetProperty("Handle", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
+			var handle = (IntPtr)propInfo.GetValue(map);
+			evas_map_util_3d_perspective(handle, px, py, z0, foc);
+		}
+
+		[DllImport("libevas.so.1")]
+		static extern void evas_map_util_3d_perspective(IntPtr map, int px, int py, int z0, int foc);
+	}
+}

Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs

@@ -4,7 +4,6 @@
 using System.Linq;
 using ElmSharp;
 using ElmSharp.Accessible;
-using ElmSharp.Wearable;
 using Xamarin.Forms.Internals;
 using Xamarin.Forms.Platform.Tizen.Native;
 using EFocusDirection = ElmSharp.FocusDirection;
@@ -1018,6 +1017,10 @@ void ApplyRotation(EvasMap map, ERect geometry, ref bool changed)
 			{
 				map.Rotate3D(rotationX, rotationY, rotationZ, (int)(geometry.X + geometry.Width * anchorX),
 															  (int)(geometry.Y + geometry.Height * anchorY), 0);
+				// the last argument is focal length, it determine the strength of distortion. We compared it with the Android implementation
+				map.Perspective3D(geometry.X + geometry.Width / 2, geometry.Y + geometry.Height / 2, 0, (int)(1.3 * Math.Max(geometry.Height, geometry.Width)));
+				// Need to unset clip because perspective 3d rotation is going beyond the container bound
+				NativeView.SetClip(null);
 				changed = true;
 			}
 		}