1

Assets/Packages/com.unity.uiextensions/Runtime/Scripts/Effects/ShaderEffects/UIImageCrop.cs

@@ -0,0 +1,70 @@
+/// 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/Effects/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)
+            {
+                if (mGraphic.material == null || mGraphic.material.name == "Default UI Material")
+                {
+                    //Applying default material with UI Image Crop shader
+                    mGraphic.material = new Material(ShaderLibrary.GetShaderInstance("UI Extensions/UI Image Crop"));
+                }
+                mat = mGraphic.material;
+            }
+            else
+            {
+                Debug.LogError("Please attach component to a Graphical 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);
+        }
+    }
+}