Added UIImage Crop shader style

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branch : develop_4.6

Materials.meta

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Materials/UIImageCropMaterial.mat.meta

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Scripts/Primitives.meta

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Scripts/UIImageCrop.cs

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+/// Credit 00christian00
+/// Sourced from - http://forum.unity3d.com/threads/any-way-to-show-part-of-an-image-without-using-mask.360085/#post-2332030
+
+
+namespace UnityEngine.UI.Extensions
+{
+    [AddComponentMenu("UI/Extensions/UIImageCrop")]
+    [ExecuteInEditMode]
+    [RequireComponent(typeof(RectTransform))]
+    public class UIImageCrop : MonoBehaviour
+    {
+        MaskableGraphic mGraphic;
+        Material mat;
+        int XCropProperty, YCropProperty;
+        public float XCrop = 0f;
+        public float YCrop = 0f;
+
+
+        // Use this for initialization
+        void Start()
+        {
+
+            SetMaterial();
+        }
+        public void SetMaterial()
+        {
+            mGraphic = this.GetComponent<MaskableGraphic>();
+            XCropProperty = Shader.PropertyToID("_XCrop");
+            YCropProperty = Shader.PropertyToID("_YCrop");
+            if (mGraphic != null)
+            {
+                mat = mGraphic.material;
+
+            }
+            else Debug.LogError("Please attach a UI component");
+        }
+        public void OnValidate()
+        {
+            SetMaterial();
+            SetXCrop(XCrop);
+            SetYCrop(YCrop);
+        }
+        /// <summary>
+        /// Set the x crop factor, with x being a normalized value 0-1f.  
+        /// </summary>
+        /// <param name="xcrop"></param>
+        public void SetXCrop(float xcrop)
+        {
+            XCrop = Mathf.Clamp01(xcrop);
+            mat.SetFloat(XCropProperty, XCrop);
+        }
+
+        /// <summary>
+        /// Set the y crop factor, with y being a normalized value 0-1f.  
+        /// </summary>
+        /// <param name="ycrop"></param>
+        public void SetYCrop(float ycrop)
+        {
+            YCrop = Mathf.Clamp01(ycrop);
+            mat.SetFloat(YCropProperty, YCrop);
+        }
+    }
+}

Scripts/UIImageCrop.cs.meta

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Shaders.meta

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Shaders/UIImageCrop.shader

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+/// Credit 00christian00
+/// Sourced from - http://forum.unity3d.com/threads/any-way-to-show-part-of-an-image-without-using-mask.360085/#post-2332030
+
+Shader "UI Extensions/UI Image Crop" {
+	Properties
+	{
+		_MainTex ("Base (RGB)", 2D) = "white" {}
+
+		_XCrop ("X Crop", Range(0.0,1.0)) = 1
+		_YCrop ("Y Crop", Range(0.0,1.0)) = 1
+	}
+	
+	SubShader {
+
+	ZWrite Off
+	Tags
+		{
+			"Queue" = "Transparent"
+			"RenderType" = "Transparent"
+			"IgnoreProjector" = "True"
+		}
+		Blend SrcAlpha OneMinusSrcAlpha 
+	
+    Pass {
+
+      CGPROGRAM
+	 
+      #pragma vertex vert
+      #pragma fragment frag
+      #include "UnityCG.cginc"
+    
+      struct v2f {
+          float4 pos : POSITION;
+          fixed4 color : COLOR;
+		  float2 uv 	: TEXCOORD0; //UV1 coord
+      };
+      
+	  uniform sampler2D _MainTex;
+	  float4 _MainTex_ST;
+	  uniform float _XCrop;
+	  uniform float _YCrop;
+	  
+      v2f vert (v2f v)
+      {
+	  
+          v2f o;
+		  o.color=v.color;
+		  o.color.a=0.1;
+		  o.pos = mul (UNITY_MATRIX_MVP, v.pos);
+		  
+		  o.uv=TRANSFORM_TEX(v.uv, _MainTex); 
+		 
+          return o;
+      }
+      fixed4 frag (v2f i) : COLOR
+	  { 
+	  
+	  //return fixed4(0.25,0,0,1);
+	  i.color.a=step(i.uv.x,_XCrop);
+	  //I don't like the bottom up ordering,so I reverse it
+	  i.color.a=i.color.a*step(1-i.uv.y,_YCrop);
+	  return i.color * tex2D (_MainTex, i.uv);
+	   }
+      ENDCG
+    }
+  } 
+}

Shaders/UIImageCrop.shader.meta

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