Experimental Feature: Area Lights (#236)

Author: Cameron-Micka

com.microsoft.mrtk.graphicstools.unity/Editor/Experimental/AreaLight.meta

@@ -0,0 +1,148 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+using UnityEditor;
+using UnityEngine;
+
+namespace Microsoft.MixedReality.GraphicsTools.Editor
+{
+	/// <summary>
+	/// Improves object selection and adds a shortcut to create a configured game object and component from the game object context menu.
+	/// </summary>
+	[CustomEditor(typeof(AreaLight))]
+	public class AreaLightInspector : UnityEditor.Editor
+	{
+		private void OnSceneGUI()
+		{
+			AreaLight light = target as AreaLight;
+
+			if (light == null)
+			{
+				return;
+			}
+
+			if (light.enabled)
+			{
+				Handles.color = light.Color;
+			}
+			else
+			{
+				Handles.color = Color.gray;
+			}
+
+			EditorGUI.BeginChangeCheck();
+			Vector2 size = DrawRectHandles(light.transform.rotation, light.transform.position, light.Size);
+			if (EditorGUI.EndChangeCheck())
+			{
+				Undo.RecordObject(light, "Adjust Area Light Size");
+				light.Size = size;
+			}
+
+			// Draw the area light's normal only if it will not overlap with the current tool.
+			if (!((Tools.current == Tool.Move || Tools.current == Tool.Scale) && Tools.pivotRotation == PivotRotation.Local))
+			{
+				Handles.DrawLine(light.transform.position, light.transform.position + light.transform.forward);
+			}
+
+			Handles.color = new Color(255.0f / 255.0f, 165.0f / 255.0f, 0.0f / 255.0f); // Orange.
+
+			// Different visual representation for runtime and edit mode because runtime using CullingGroup to cull lights.
+			if (Application.isPlaying)
+			{
+				var bounds = light.SphereBoundsWorldSpace;
+				Handles.RadiusHandle(Quaternion.identity, bounds.position, bounds.radius);
+			}
+			else
+			{
+				var bounds = light.BoundsWorldSpace;
+				Handles.DrawWireCube(bounds.center, bounds.size);
+			}
+
+			if (light.CullingActive)
+			{
+				Handles.Label(light.transform.position, $"Visible: {light.IsVisible}\nDist: {light.Distance.ToString("n1")}");
+			}
+		}
+
+		private bool HasFrameBounds() { return true; }
+
+		private Bounds OnGetFrameBounds()
+		{
+			var light = target as AreaLight;
+			Debug.Assert(light != null);
+			return light.BoundsWorldSpace;
+		}
+
+		[MenuItem("GameObject/Light/Graphics Tools/Area Light")]
+		private static void CreateAreaLight(MenuCommand menuCommand)
+		{
+			GameObject gameObject = InspectorUtilities.CreateGameObjectFromMenu<AreaLight>(menuCommand);
+
+			if (gameObject != null)
+			{
+				gameObject.transform.position = new Vector3(0.0f, 1.0f, 0.0f);
+				gameObject.transform.rotation = Quaternion.Euler(0.0f, 180.0f, 0.0f);
+			}
+		}
+
+		private static float SizeSlider(Vector3 p, Vector3 d, float r)
+		{
+			Vector3 position = p + d * r;
+			float size = HandleUtility.GetHandleSize(position);
+			bool temp = GUI.changed;
+			GUI.changed = false;
+			position = Handles.Slider(position, d, size * 0.03f, Handles.DotHandleCap, 0.0f);
+
+			if (GUI.changed)
+			{
+				r = Vector3.Dot(position - p, d);
+			}
+
+			GUI.changed |= temp;
+			return r;
+		}
+		private static Color ToActiveColorSpace(Color color)
+		{
+			return (QualitySettings.activeColorSpace == ColorSpace.Linear) ? color.linear : color;
+		}
+
+		private static Vector2 DrawRectHandles(Quaternion rotation, Vector3 position, Vector2 size)
+		{
+			Vector3 up = rotation * Vector3.up;
+			Vector3 right = rotation * Vector3.right;
+
+			float halfWidth = 0.5f * size.x;
+			float halfHeight = 0.5f * size.y;
+
+			Vector3 topRight = position + up * halfHeight + right * halfWidth;
+			Vector3 bottomRight = position - up * halfHeight + right * halfWidth;
+			Vector3 bottomLeft = position - up * halfHeight - right * halfWidth;
+			Vector3 topLeft = position + up * halfHeight - right * halfWidth;
+
+			// Draw the rectangle.
+			Handles.DrawLine(topRight, bottomRight);
+			Handles.DrawLine(bottomRight, bottomLeft);
+			Handles.DrawLine(bottomLeft, topLeft);
+			Handles.DrawLine(topLeft, topRight);
+
+			// Give handles twice the alpha of the lines.
+			Color originalColor = Handles.color;
+			Color color = Handles.color;
+			color.a = Mathf.Clamp01(Handles.color.a * 2);
+			Handles.color = ToActiveColorSpace(color);
+
+			// Draw the handles.
+			halfHeight = SizeSlider(position, up, halfHeight);
+			halfHeight = SizeSlider(position, -up, halfHeight);
+			halfWidth = SizeSlider(position, right, halfWidth);
+			halfWidth = SizeSlider(position, -right, halfWidth);
+
+			size.x = Mathf.Max(0.0f, 2.0f * halfWidth);
+			size.y = Mathf.Max(0.0f, 2.0f * halfHeight);
+
+			Handles.color = originalColor;
+
+			return size;
+		}
+	}
+}

com.microsoft.mrtk.graphicstools.unity/Editor/Experimental/AreaLight/AreaLightInspector.cs

@@ -379,6 +379,7 @@ public void ApplyBlur(ref RenderTexture source, ref RenderTexture destination)
                 Debug.LogWarning("Null blur source texture.");
                 return;
             }
+
             if (useDualBlur)
             {
                 dualBlur.ApplyBlur("AcrylicLayer" + index + "_Blur", source, settings.blurPasses);
@@ -409,6 +410,17 @@ public void ApplyBlur(ref RenderTexture source, ref RenderTexture destination)
             }
         }
 
+        public void ApplyDualBlur(ref RenderTexture source, int iterations)
+        {
+            if (source == null)
+            {
+                Debug.LogWarning("Null blur source texture.");
+                return;
+            }
+
+            dualBlur.ApplyBlur("AcrylicLayer" + index + "_Blur", source, iterations);
+        }
+
         public void SetBlendSource(RenderTexture input, bool both)
         {
             InitRenderTexture(ref blendSource[blendSourceIndex], input.width, input.height, 0, "BlendSource");