Added autofocus and getting intrinsics

- Added computing indices offset in images blending for autofocus.
 - Added functions for getting intrinsics and distance between eyes.
 - Added function to changing distance between eyes.

Assets/Scenes/MainScene.unity

@@ -281,7 +281,7 @@ GameObject:
   - component: {fileID: 73635655}
   m_Layer: 0
   m_Name: Camera
-  m_TagString: Untagged
+  m_TagString: Eye
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
@@ -407,10 +407,9 @@ GameObject:
   - component: {fileID: 146129747}
   - component: {fileID: 146129744}
   - component: {fileID: 146129745}
-  - component: {fileID: 146129748}
   m_Layer: 0
   m_Name: StreamCamera
-  m_TagString: Untagged
+  m_TagString: Eye
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
@@ -528,19 +527,6 @@ Transform:
   - {fileID: 73635657}
   m_Father: {fileID: 0}
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
---- !u!114 &146129748
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 146129743}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: 4fbe774de7f8cad4baf2baa9214f351b, type: 3}
-  m_Name: 
-  m_EditorClassIdentifier: 
-  Result: {fileID: 0}
 --- !u!1 &365053774
 GameObject:
   m_ObjectHideFlags: 0
@@ -762,7 +748,7 @@ GameObject:
   m_Icon: {fileID: 0}
   m_NavMeshLayer: 0
   m_StaticEditorFlags: 0
-  m_IsActive: 1
+  m_IsActive: 0
 --- !u!4 &409312061
 Transform:
   m_ObjectHideFlags: 0
@@ -1602,6 +1588,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 352843fcb82866541af2de5278408ab4, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  testDistance: 0.08
   DepthShader: {fileID: 4800000, guid: 38575fbac906d53499789597d61d2fa4, type: 3}
   BlendShader: {fileID: 7200000, guid: 5bf2857e309eda648b826d75af82d1ab, type: 3}
   camera1: {fileID: 146129744}
@@ -1609,7 +1596,7 @@ MonoBehaviour:
   QuadResolution: 256
   Multiplier: 2
   Reciever: {fileID: 2021891225}
-  OffsetMultiplier: 408
+  OffsetMultiplier: 400
   test: {fileID: 8400000, guid: 9238b2348d84d7441a39460751d49c8c, type: 2}
 --- !u!4 &763126626
 Transform:

Assets/Scripts/BlendShaderController.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.IO;
@@ -14,6 +15,19 @@ public class BlendShaderController : MonoBehaviour
     private const string filename = "dsitMap";
     private const string ext = ".txt";
 
+    private Vector3 center
+    {
+        get
+        {
+            if (camera1 && camera2)
+                return camera1.transform.position + camera1.transform.right * camera2.transform.localPosition.x * 0.5f;
+            else
+                return Vector3.zero;
+        }
+    }
+
+    [Range(0.0f, 2.0f)]
+    public float testDistance = 0.08f;
     public Shader DepthShader;
     public ComputeShader BlendShader;
     public Camera camera1;
@@ -40,6 +54,8 @@ public class BlendShaderController : MonoBehaviour
     Task<string> task1;
     Task task2;
 
+    private int uvOffset;
+
     // Start is called before the first frame update
     void Start()
     {
@@ -86,6 +102,9 @@ public class BlendShaderController : MonoBehaviour
     // Update is called once per frame
     void Update()
     {
+        SetCameraDistance(testDistance);
+        ComputeUVOffset();
+
         if (Input.GetKeyDown(KeyCode.F))
         {
             SetFlag();
@@ -125,13 +144,31 @@ public class BlendShaderController : MonoBehaviour
         BlendShader.SetTexture(0, "Camera1", tex1);
         BlendShader.SetTexture(0, "Camera2", tex2);
         BlendShader.SetTexture(0, "Result", Result);
-        BlendShader.SetFloat(Shader.PropertyToID("Offset"), (int)(camera2.transform.localPosition.x * OffsetMultiplier));
+        BlendShader.SetFloat(Shader.PropertyToID("Offset"), uvOffset);
         BlendShader.SetFloat(Shader.PropertyToID("ResX"), Result.width);
         BlendShader.SetBuffer(0, "MonoChannelResult", computeBuffer);
         //BlendShader.SetTexture(0, "Test", test);
         BlendShader.Dispatch(0, Result.width / 8, Result.height / 8, 1);
     }
 
+    void ComputeUVOffset()
+    {
+        if (camera1 && camera2)
+        {
+            if (Physics.Raycast(center, camera1.transform.forward, out var hit, 1000))
+            {
+                Vector3 target = hit.point;
+                Vector3 clipPoint1 = camera1.WorldToScreenPoint(target);
+                Vector3 clipPoint2 = camera2.WorldToScreenPoint(target);
+                float diff = clipPoint1.x - clipPoint2.x;
+                uvOffset = (int)(diff * 0.5f);
+                return;
+            }
+        }
+
+        uvOffset = (int)(camera2.transform.localPosition.x * OffsetMultiplier);
+    }
+
     void GenerateDepth()
     {
         //camera1.RenderWithShader(DepthShader, "RenderType");
@@ -197,11 +234,9 @@ public class BlendShaderController : MonoBehaviour
         resultArray = new float[currentRes * currentRes];
         computeBuffer.GetData(resultArray);
         int idx = (int)(currentRes * (0.5f + currentRes * 0.5f));
-        Matrix4x4 porjMat = camera1.projectionMatrix;
         float zDepth = resultArray[idx];
         float far = camera1.farClipPlane;
-        float near = camera1.nearClipPlane;
+        return zDepth * far; 
-        return zDepth * (far - near) + near; 
     }
 
     private float GetDistanceByRayCast()
@@ -215,6 +250,38 @@ public class BlendShaderController : MonoBehaviour
         return -1;
     }
 
+    public double[] GetIntrinsicParameters(Camera camera)
+    {
+        int width = camera.targetTexture != null ? camera.targetTexture.width : camera.pixelWidth;
+        int height = camera.targetTexture != null ? camera.targetTexture.height : camera.pixelHeight;
+        double fovRad = camera.fieldOfView * Math.PI / 180.0;
+        double fy = (height * 0.5) / Math.Tan(fovRad * 0.5);
+        double aspect = (double)width / height;
+        double fx = fy * aspect;
+        double cx = width * 0.5;
+        double cy = height * 0.5;
+        return new double[] { fx, 0, cx, 0, fy, cy, 0, 0, 1 };
+    }
+
+    public float GetCameraDistance()
+    {
+        if (camera1 == null || camera2 == null)
+            return -1f;
+        return camera2.transform.localPosition.x;
+    }
+
+    public void SetCameraDistance(float distance)
+    {
+        if (camera1 == null || camera2 == null)
+            return;
+
+        Vector3 direction = camera1.transform.right;
+        distance = Mathf.Max(0, distance);
+        Vector3 camera2LocPos = camera2.transform.localPosition;
+        camera2.transform.localPosition = new Vector3(distance, camera2LocPos.y, camera2LocPos.z);
+        camera1.transform.position = center - direction * distance * 0.5f;
+    }
+
     private void OnDisable()
     {
         computeBuffer.Release();