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 image;
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Transform transform;
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for(int i = 0;i < _transform.childCount;i++) {
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transform = _transform.GetChild(i);
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image = transform.GetComponent<Image>();
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if(image != null) {
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image.material = imageMaterials.Length > 0 ? imageMaterials[0] : null;
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}
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else
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{
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var imageex = transform.GetComponent<ImageEx>();
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if (imageex != null)
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{
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imageex.material = imageMaterials.Length > 0 ? imageMaterials[0] : null;
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}
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}
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if(transform.childCount > 0) {
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SetChildrenImageMaterial(transform);
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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 text;
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Transform transform;
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for(int i = 0;i < _parent.childCount;i++) {
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transform = _parent.GetChild(i);
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text = transform.GetComponent<Text>();
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if(text != null) {
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text.material = textMaterials.Length > 0 ? textMaterials[0] : null;
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}
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if(transform.childCount > 0) {
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SetChildrenTextMaterial(transform);
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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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leftBottom = scaleX == 0f ? Vector2.zero : rectTransform.GetMinWorldPosition() / scaleX;
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rightTop = scaleY == 0f ? Vector2.zero : rectTransform.GetMaxWorldPosition() / scaleY;
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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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static void SetSmoothMask(Material material,Vector2 leftBottom,Vector2 rightTop,Vector2 smoothRect) {
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material.SetVector("_LeftBottom",leftBottom);
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material.SetVector("_RightTop",rightTop);
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material.SetVector("_SmoothRect",smoothRect);
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}
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}
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