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