Unity UI擦除效果

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已于 2024-05-11 11:35:41 修改 · 649 阅读

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#unity #ui #游戏引擎

于 2024-04-23 15:57:19 首次发布

public class ScratchImage : MonoBehaviour
    {
   
   
        /// <summary>
        /// 蒙版贴图
        /// </summary>
        public Image maskImage;
        public Material maskMaterial;
        private Camera uiCamera;
        private Vector2 _maskSize;
        private Texture2D _rt;
        private Color[] spritePixels;
        public int brushRadius = 50;
        private float percent = 0;
        public float finishPercent = 0.95f;
        private int clearNum = 0;
        private int[] dirtyPoints;
        private Vector2 SCALE_FACTOR;
        private Vector2Int RTSize;
        bool bClear = false;
        private void Reset()
        {
   
   
            maskImage = GetComponent<Image>();
            maskMaterial = maskImage.material;
        }
        public void SetParams(int brushRadius,float fpercent)
        {
   
   
            this.brushRadius = brushRadius;
            this.finishPercent = fpercent;
        }
        private void Init()
        {
   
   
            if (uiCamera == null)
            {
   
   
                uiCamera = UIHelper.Instance.UICamera;
            }
            SCALE_FACTOR = maskImage.sprite.textureRect.size / maskImage.rectTransform.rect.size;
            _maskSize = maskImage.rectTransform.rect.size;
            //Debug.LogFormat("mask image size:{0}*{1}", maskSize.x, maskSize.y);
            RTSize = new Vector2Int((int)maskImage.sprite.textureRect.size.x, (int)maskImage.sprite.textureRect.size.y