Initial commit.

Assets/Kino/Mirror/Mirror.cs

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+//
+// KinoMirror - Mirroring and kaleidoscope effect
+//
+// Copyright (C) 2015 Keijiro Takahashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+using UnityEngine;
+
+namespace Kino
+{
+    [ExecuteInEditMode]
+    [RequireComponent(typeof(Camera))]
+    [AddComponentMenu("Kino Image Effects/Mirror")]
+    public class Mirror : MonoBehaviour
+    {
+        #region Public Properties
+
+        [SerializeField]
+        int _repeat;
+
+        [SerializeField]
+        float _offset;
+
+        [SerializeField]
+        float _roll;
+
+        [SerializeField]
+        bool _symmetry;
+
+        #endregion
+
+        #region Private Properties
+
+        [SerializeField] Shader _shader;
+        Material _material;
+
+        #endregion
+
+        #region MonoBehaviour Functions
+
+        void OnRenderImage(RenderTexture source, RenderTexture destination)
+        {
+            if (_material == null)
+            {
+                _material = new Material(_shader);
+                _material.hideFlags = HideFlags.DontSave;
+            }
+
+            var div = Mathf.PI * 2 / Mathf.Max(1, _repeat);
+
+            _material.SetFloat("_Divisor", div);
+            _material.SetFloat("_Offset", _offset);
+            _material.SetFloat("_Roll", _roll);
+
+            if (_symmetry)
+                _material.EnableKeyword("SYMMETRY_ON");
+            else
+                _material.DisableKeyword("SYMMETRY_ON");
+
+            Graphics.Blit(source, destination, _material);
+        }
+
+        #endregion
+    }
+}

Assets/Kino/Mirror/Shader/Mirror.shader

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+//
+// KinoMirror - Mirroring and kaleidoscope effect
+//
+// Copyright (C) 2015 Keijiro Takahashi
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+Shader "Hidden/Kino/Mirror"
+{
+    Properties
+    {
+        _MainTex ("-", 2D) = "" {}
+    }
+    CGINCLUDE
+
+    #include "UnityCG.cginc"
+
+    #pragma multi_compile _ SYMMETRY_ON
+
+    sampler2D _MainTex;
+    float _Divisor;
+    float _Offset;
+    float _Roll;
+
+    half4 frag(v2f_img i) : SV_Target
+    {
+        // Convert to the polar coordinate.
+        float2 sc = i.uv - 0.5;
+        float phi = atan2(sc.y, sc.x);
+        float r = sqrt(dot(sc, sc));
+
+        // Angular repeating.
+        phi += _Offset;
+        phi = phi - _Divisor * floor(phi / _Divisor);
+        #if SYMMETRY_ON
+        phi = min(phi, _Divisor - phi);
+        #endif
+        phi += _Roll - _Offset;
+
+        // Reflection at the border of the screen.
+        r = min(r, 1.0 - r);
+
+        // Convert back to the texture coordinate.
+        float2 uv = float2(cos(phi), sin(phi)) * r + 0.5;
+
+        return tex2D(_MainTex, uv);
+    }
+
+    ENDCG
+    SubShader
+    {
+        Pass
+        {
+            ZTest Always Cull Off ZWrite Off
+            CGPROGRAM
+            #pragma vertex vert_img
+            #pragma fragment frag
+            ENDCG
+        }
+    }
+}