added sun angle randomizer

com.unity.perception/Runtime/Randomization/Randomizers/SampleRandomizers/Tags/ColorRandomizerTag.cs

     /// <summary>
     /// Used in conjunction with a ColorRandomizer to vary the material color of GameObjects
     /// </summary>
-    [AddComponentMenu("Perception/RandomizerTags/ColorRandomizerTag")]
+    [AddComponentMenu("Perception/RandomizerTags/Color Randomizer Tag")]
     public class ColorRandomizerTag : RandomizerTag { }
 }

com.unity.perception/Runtime/Randomization/Randomizers/SampleRandomizers/Tags/HueOffsetRandomizerTag.cs

     /// <summary>
     /// Used in conjunction with a HueOffsetRandomizer to vary the hue of GameObjects
     /// </summary>
-    [AddComponentMenu("Perception/RandomizerTags/HueOffsetRandomizerTag")]
+    [AddComponentMenu("Perception/RandomizerTags/Hue Offset Randomizer Tag")]
     public class HueOffsetRandomizerTag : RandomizerTag { }
 }

com.unity.perception/Runtime/Randomization/Randomizers/SampleRandomizers/Tags/RotationRandomizerTag.cs

     /// <summary>
     /// Used in conjunction with a RotationRandomizer to vary the rotation of GameObjects
     /// </summary>
-    [AddComponentMenu("Perception/RandomizerTags/RotationRandomizerTag")]
+    [AddComponentMenu("Perception/RandomizerTags/Rotation Randomizer Tag")]
     public class RotationRandomizerTag : RandomizerTag { }
 }

com.unity.perception/Runtime/Randomization/Randomizers/SampleRandomizers/Tags/TextureRandomizerTag.cs

     /// <summary>
     /// Used in conjunction with a TextureRandomizer to vary the material texture of GameObjects
     /// </summary>
-    [AddComponentMenu("Perception/RandomizerTags/TextureRandomizerTag")]
+    [AddComponentMenu("Perception/RandomizerTags/Texture Randomizer Tag")]
     public class TextureRandomizerTag : RandomizerTag { }
 }

com.unity.perception/Runtime/Randomization/Randomizers/SampleRandomizers/Randomizers/SunAngleRandomizer.cs

+using System;
+using UnityEngine.Experimental.Perception.Randomization.Parameters;
+using UnityEngine.Experimental.Perception.Randomization.Randomizers.SampleRandomizers.Tags;
+using UnityEngine.Experimental.Perception.Randomization.Samplers;
+
+namespace UnityEngine.Experimental.Perception.Randomization.Randomizers.SampleRandomizers
+{
+    /// <summary>
+    /// Randomizes the rotation of directional lights tagged with a SunAngleRandomizerTag
+    /// </summary>
+    [Serializable]
+    [AddRandomizerMenu("Perception/Sun Angle Randomizer")]
+    public class SunAngleRandomizer : Randomizer
+    {
+        public FloatParameter hour = new FloatParameter { value = new UniformSampler(0, 24)};
+        public FloatParameter timeOfYear = new FloatParameter { value = new UniformSampler(0, 1)};
+        public FloatParameter latitude = new FloatParameter { value = new UniformSampler(-90, 90)};
+
+        /// <summary>
+        /// Randomizes the rotation of tagged directional lights at the start of each scenario iteration
+        /// </summary>
+        protected override void OnIterationStart()
+        {
+            var lightObjects = tagManager.Query<SunAngleRandomizerTag>();
+            foreach (var lightObject in lightObjects)
+            {
+                var earthSpin = Quaternion.AngleAxis((hour.Sample() + 12f) / 24f * 360f, Vector3.down);
+                var timeOfYearRads = timeOfYear.Sample() * Mathf.PI * 2f;
+                var earthTilt = Quaternion.Euler(Mathf.Cos(timeOfYearRads) * 23.5f, 0, Mathf.Sin(timeOfYearRads) * 23.5f);
+                var earthLat = Quaternion.AngleAxis(latitude.Sample(), Vector3.right);
+                var lightRotation = earthTilt * earthSpin * earthLat;
+                lightObject.transform.rotation = Quaternion.Euler(90,0,0) * Quaternion.Inverse(lightRotation);
+            }
+        }
+    }
+}

com.unity.perception/Runtime/Randomization/Randomizers/SampleRandomizers/Randomizers/SunAngleRandomizer.cs.meta

+fileFormatVersion: 2
+guid: 8c42ca49e88d4572a27cf7326827d777
+timeCreated: 1601672538

com.unity.perception/Runtime/Randomization/Randomizers/SampleRandomizers/Tags/SunAngleRandomizerTag.cs

+namespace UnityEngine.Experimental.Perception.Randomization.Randomizers.SampleRandomizers.Tags
+{
+    /// <summary>
+    /// Used in conjunction with a SunAngleRandomizer to vary the rotation of directional lights
+    /// </summary>
+    [AddComponentMenu("Perception/RandomizerTags/Sun Angle Randomizer Tag")]
+    public class SunAngleRandomizerTag : RandomizerTag { }
+}

com.unity.perception/Runtime/Randomization/Randomizers/SampleRandomizers/Tags/SunAngleRandomizerTag.cs.meta

+fileFormatVersion: 2
+guid: db00808ab9d04579b81b7f0dbd67b90f
+timeCreated: 1601672735