HeavenStudioPlus/Assets/Plugins/com.unity.uiextensions/Runtime/Scripts/Effects/ShaderEffects/UIImageCrop.cs
2022-01-05 19:11:33 -05:00

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2.2 KiB
C#

/// 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);
}
}
}