MaskCamera & MaskUV

- MaskUV shader graph node.
- Mask Camera as controller.

Runtime/MaskCamera.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using UnityEngine;
 
 namespace TAO.InteractiveMask
@@ -5,14 +6,19 @@ namespace TAO.InteractiveMask
 	[RequireComponent(typeof(MaskRenderer))]
 	public class MaskCamera : MonoBehaviour
 	{
+		public Mode mode = Mode.EachFrame;
+
 		[SerializeField]
 		private Camera maskCamera = null;
 		private MaskRenderer maskRenderer = null;
 
 		public RenderTexture target = null;
-
 		private RenderTexture source = null;
 
+		public List<Material> materials = new List<Material>();
+
+		private int targetWidth = 0;
+
 		private void Awake()
 		{
 			maskRenderer = GetComponent<MaskRenderer>();
@@ -23,11 +29,49 @@ namespace TAO.InteractiveMask
 
 			maskRenderer.target = target;
 			maskRenderer.source = source;
+
+			targetWidth = target.width;
+
+			maskRenderer.Init();
 		}
 
-		private void Start()
+		private void Update()
 		{
-			maskCamera.enabled = true;
+			if (mode == Mode.EachFrame)
+			{
+				Render();
+			}
+		}
+
+		public void Render()
+		{
+			SnapCameraPosition();
+
+			maskCamera.Render();
+			maskRenderer.Render();
+
+			foreach (var m in materials)
+			{
+				m.SetVector("_MaskData", new Vector4(maskCamera.transform.position.x, maskCamera.transform.position.z, maskCamera.orthographicSize, 0));
+			}
+		}
+
+		private void SnapCameraPosition()
+		{
+			float pws = (1.0f / targetWidth) * maskCamera.orthographicSize;
+
+			// Snap position to pixel.
+			Vector3 newPos = Vector3.zero;
+			newPos.x = (Mathf.Floor(maskCamera.transform.position.x / pws) + 0.5f) * pws;
+			newPos.y = maskCamera.transform.position.y;
+			newPos.z = (Mathf.Floor(maskCamera.transform.position.z / pws) + 0.5f) * pws;
+			maskCamera.transform.position = newPos;
+		}
+
+		public enum Mode
+		{
+			EachFrame,
+			Manual
 		}
 	}
 }

Runtime/MaskRenderer.cs

@@ -4,8 +4,6 @@ namespace TAO.InteractiveMask
 {
 	public class MaskRenderer : MonoBehaviour
 	{
-		public Mode mode = Mode.EachFrame;
-
 		public Shader clearBlit = null;
 		private Material clearBlitMaterial;
 		// Camera source.
@@ -19,7 +17,7 @@ namespace TAO.InteractiveMask
 
 		public bool debugGui = false;
 
-		public void Awake()
+		public void Init()
 		{
 			clearBlitMaterial = new Material(clearBlit);
 
@@ -29,14 +27,6 @@ namespace TAO.InteractiveMask
 			}
 		}
 
-		private void Update()
-		{
-			if (mode == Mode.EachFrame)
-			{
-				Render();
-			}
-		}
-
 		public void Render()
 		{
 			Graphics.Blit(target, target, clearBlitMaterial);
@@ -107,12 +97,6 @@ namespace TAO.InteractiveMask
 				GUILayout.Label(string.Format("{0}\n{1}x{2}\n{3}", texture.name, texture.width, texture.height, texture.graphicsFormat));
 			}
 		}
-
-		public enum Mode
-		{
-			EachFrame,
-			Manual
-		}
 	}
 
 	[System.Serializable]

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