using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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[DisallowMultipleComponent]
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[ExecuteAlways]
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public class SmoothMask:UIBehaviour,ICanvasRaycastFilter {
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[Range(0,1)]
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[SerializeField]
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private float m_Horizontal = 0f;
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public float horizontal { get { return m_Horizontal; } }
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[Range(0,1)]
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[SerializeField]
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private float m_Vertical = 0f;
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public float vertical { get { return m_Vertical; } }
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[SerializeField]
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private Material[] m_ImageMaterials;
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public Material[] imageMaterials { get { return m_ImageMaterials; } }
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[SerializeField]
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private Material[] m_TextMaterials;
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public Material[] textMaterials { get { return m_TextMaterials; } }
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[SerializeField]
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private CanvasScaler m_CanvasScaler;
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public CanvasScaler canvasScaler {
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get {
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return m_CanvasScaler ?? (m_CanvasScaler = GetComponentInParent<CanvasScaler>());
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}
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}
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public RectTransform rectTransform {
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get {
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return this.transform as RectTransform;
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}
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}
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private Vector2 leftBottom;
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private Vector2 rightTop;
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public bool IsRaycastLocationValid(Vector2 sp,Camera eventCamera) {
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return RectTransformUtility.RectangleContainsScreenPoint(rectTransform,sp,eventCamera);
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}
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void LateUpdate() {
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UpdateChildMaterialSmoothMask();
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}
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[ContextMenu("SetMaterial")]
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public void UpdateChildrenMaterial() {
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SetChildrenImageMaterial(this.transform);
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SetChildrenTextMaterial(this.transform);
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}
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private void SetChildrenImageMaterial(Transform _transform) {
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Image[] images = _transform.GetComponentsInChildren<Image>(true);
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ImageEx[] imageexs = _transform.GetComponentsInChildren<ImageEx>(true);
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if (null != images)
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{
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for(int i = 0;i < images.Length;i++) {
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images[i].material = imageMaterials.Length > 0? imageMaterials[0] : null;
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}
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}
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if (null!= imageexs)
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{
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for(int i = 0;i < imageexs.Length;i++) {
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imageexs[i].material = imageMaterials.Length > 0? imageMaterials[0] : null;
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}
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}
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}
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private void SetChildrenTextMaterial(Transform _parent) {
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Text[] texts = _parent.GetComponentsInChildren<Text>(true);
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if(texts!= null) {
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for(int i = 0;i < texts.Length;i++) {
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texts[i].material = textMaterials.Length > 0? textMaterials[0] : null;
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}
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}
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}
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private void UpdateChildMaterialSmoothMask() {
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var scaleX = canvasScaler.transform.localScale.x;
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var scaleY = canvasScaler.transform.localScale.y;
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Vector3[] corners = new Vector3[4];
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rectTransform.GetWorldCorners(corners);
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leftBottom = new Vector2(corners[0].x, corners[0].y);
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rightTop = new Vector2(corners[2].x, corners[2].y);
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if(imageMaterials != null) {
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for(int i = 0;i < imageMaterials.Length;i++) {
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SetSmoothMask(imageMaterials[i],leftBottom,rightTop,new Vector2(horizontal,vertical));
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}
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}
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if(textMaterials != null) {
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for(int i = 0;i < textMaterials.Length;i++) {
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SetSmoothMask(textMaterials[i],leftBottom,rightTop,new Vector2(horizontal,vertical));
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}
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}
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}
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#if UNITY_EDITOR
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void OnDrawGizmos() {
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Vector3[] corners = new Vector3[4];
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rectTransform.GetWorldCorners(corners);
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Gizmos.color = Color.red; // 设置线框颜色
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// 绘制矩形边界
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Gizmos.DrawLine(corners[0], corners[1]); // 左下→左上
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Gizmos.DrawLine(corners[1], corners[2]); // 左上→右上
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Gizmos.DrawLine(corners[2], corners[3]); // 右上→右下
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Gizmos.DrawLine(corners[3], corners[0]); // 右下→左下
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}
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#endif
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void SetSmoothMask(Material material,Vector2 leftBottom,Vector2 rightTop,Vector2 smoothRect) {
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Image[] images = GetComponentsInChildren<Image>(true);
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ImageEx[] imageexs = GetComponentsInChildren<ImageEx>(true);
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Text[] texts = GetComponentsInChildren<Text>(true);
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if (null != images)
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{
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foreach (var graphic in images)
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{
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graphic.material.SetVector("_LeftBottom",leftBottom);
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graphic.material.SetVector("_RightTop",rightTop);
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graphic.material.SetVector("_SmoothRect",smoothRect);
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}
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}
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if (null != imageexs)
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{
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foreach (var graphic in imageexs)
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{
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graphic.material.SetVector("_LeftBottom",leftBottom);
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graphic.material.SetVector("_RightTop",rightTop);
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graphic.material.SetVector("_SmoothRect",smoothRect);
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}
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}
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if (null != texts)
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{
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foreach (var graphic in texts)
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{
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graphic.material.SetVector("_LeftBottom",leftBottom);
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graphic.material.SetVector("_RightTop",rightTop);
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graphic.material.SetVector("_SmoothRect",smoothRect);
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}
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}
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}
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}
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