using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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public static class UIUtility
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{
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public static GameObject CreateWidget(string _sourceName, string _name)
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{
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var prefab = ResManager.Instance.LoadAsset<GameObject>("UIComp", _sourceName);
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if (prefab == null)
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{
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return null;
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}
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var instance = GameObject.Instantiate(prefab);
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instance.name = string.IsNullOrEmpty(_name) ? _sourceName : _name;
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return instance;
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}
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public static T GetComponent<T>(this Transform transform, string path) where T : Component
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{
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if (transform == null || string.IsNullOrEmpty(path))
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{
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return null;
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}
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var _child = transform.Find(path);
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if (_child == null)
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{
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return null;
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}
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else
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{
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return _child.GetComponent<T>();
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}
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}
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public static T GetComponent<T>(this Component component, string path) where T : Component
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{
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if (component == null || string.IsNullOrEmpty(path))
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{
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return null;
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}
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var _child = component.transform.Find(path);
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if (_child == null)
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{
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return null;
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}
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else
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{
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return _child.GetComponent<T>();
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}
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}
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public static T GetComponent<T>(this GameObject gameObject, string path) where T : Component
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{
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if (gameObject == null || string.IsNullOrEmpty(path))
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{
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return null;
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}
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var _child = gameObject.transform.Find(path);
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if (_child == null)
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{
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return null;
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}
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else
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{
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return _child.GetComponent<T>();
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}
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}
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public static Vector2 GetMaxWorldPosition(this RectTransform _rectTransform)
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{
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Vector3[] cornors = new Vector3[4];
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_rectTransform.GetWorldCorners(cornors);
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return cornors[2];
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}
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public static Vector2 GetMinWorldPosition(this RectTransform _rectTransform)
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{
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Vector3[] cornors = new Vector3[4];
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_rectTransform.GetWorldCorners(cornors);
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return cornors[0];
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}
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public static Vector2 GetMaxReferencePosition(this RectTransform _rectTransform, Transform _reference)
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{
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Vector2 max;
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var offsetY = (1 - _rectTransform.pivot.y) * _rectTransform.rect.height;
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var offsetX = (1 - _rectTransform.pivot.x) * _rectTransform.rect.width;
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max = _rectTransform.TransformPoint(offsetX, offsetY, 0);
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max = _reference.InverseTransformVector(max);
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return max;
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}
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public static Vector2 GetMinReferencePosition(this RectTransform _rectTransform, Transform _reference)
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{
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Vector2 min;
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var offsetY = -_rectTransform.pivot.y * _rectTransform.rect.height;
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var offsetX = -_rectTransform.pivot.x * _rectTransform.rect.width;
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min = _rectTransform.TransformPoint(offsetX, offsetY, 0);
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min = _reference.InverseTransformVector(min);
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return min;
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}
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public static int RayCrossingCount(Vector2 p, List<Vector3> vertices)
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{
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var crossNum = 0;
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for (int i = 0, count = vertices.Count; i < count; i++)
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{
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var v1 = vertices[i];
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var v2 = vertices[(i + 1) % count];
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if (((v1.y <= p.y) && (v2.y > p.y))
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|| ((v1.y > p.y) && (v2.y <= p.y)))
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{
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if (p.x < v1.x + (p.y - v1.y) / (v2.y - v1.y) * (v2.x - v1.x))
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{
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crossNum += 1;
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}
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}
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}
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return crossNum;
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}
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public static UIVertex PackageUIVertex(Vector3 _position, Vector2 _uv0, Color _color)
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{
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var vertex = new UIVertex();
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vertex.position = _position;
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vertex.uv0 = _uv0;
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vertex.color = _color;
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return vertex;
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}
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public static UIVertex PackageUIVertexUV1(Vector3 _position, Vector2 _uv1, Color _color)
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{
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var vertex = new UIVertex();
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vertex.position = _position;
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vertex.uv1 = _uv1;
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vertex.color = _color;
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return vertex;
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}
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public static Vector3 ClampWorldPosition(RectTransform _area, PointerEventData _data)
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{
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if (_area == null || _data == null)
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{
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return Vector3.zero;
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}
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else
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{
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var worldMousePos = Vector3.zero;
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if (RectTransformUtility.ScreenPointToWorldPointInRectangle(_area, _data.position, _data.pressEventCamera, out worldMousePos))
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{
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return worldMousePos;
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}
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else
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{
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return _data.pointerCurrentRaycast.worldPosition;
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}
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}
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}
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public static bool RectTransformContain(RectTransform _area, RectTransform _test)
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{
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if (_area == null || _test == null)
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{
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return false;
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}
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var worldcornersA = new Vector3[4];
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_area.GetWorldCorners(worldcornersA);
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var worldcornersB = new Vector3[4];
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_test.GetWorldCorners(worldcornersB);
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var a = new Quadrangle(worldcornersA[0].x, worldcornersA[0].y, worldcornersA[2].x, worldcornersA[2].y);
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var b = new Quadrangle(worldcornersB[0].x, worldcornersB[0].y, worldcornersB[2].x, worldcornersB[2].y);
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if (a.minX > b.maxX || a.maxX < b.minX || a.minY > b.maxY || a.maxY < b.minY)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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public static bool IsPointerOverGameObject()
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{
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if (EventSystem.current == null)
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{
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return false;
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}
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var eventData = new PointerEventData(EventSystem.current);
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eventData.pressPosition = Input.mousePosition;
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eventData.position = Input.mousePosition;
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var list = new List<RaycastResult>();
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EventSystem.current.RaycastAll(eventData, list);
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return list.Count > 0;
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}
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struct Quadrangle
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{
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public float minX;
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public float minY;
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public float maxX;
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public float maxY;
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public Quadrangle(float _minX, float _minY, float _maxX, float _maxY)
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{
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this.minX = _minX;
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this.minY = _minY;
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this.maxX = _maxX;
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this.maxY = _maxY;
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}
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}
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public static Vector2 GetEdge(List<UIVertex> _vertexs, int _axis)
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{
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if (_vertexs == null || _vertexs.Count == 0)
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{
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Debug.Log("非法顶点数据");
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return Vector2.zero;
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}
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if (_axis != 0 && _axis != 1)
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{
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Debug.Log("非法轴");
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return Vector2.zero;
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}
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var count = _vertexs.Count;
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var min = _vertexs[0].position[_axis];
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var max = _vertexs[0].position[_axis];
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for (int i = 1; i < count; i++)
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{
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if (_vertexs[i].position[_axis] < min)
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{
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min = _vertexs[i].position[_axis];
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}
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else if (_vertexs[i].position[_axis] > max)
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{
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max = _vertexs[i].position[_axis];
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}
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}
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return new Vector2(min, max);
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}
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public static void AddQuad(VertexHelper vertexHelper, Vector3[] quadPositions, Color32 color, Vector2[] quadUVs)
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{
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if (quadPositions == null || quadPositions.Length < 4)
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{
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Debug.Log("非法顶点数组");
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return;
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}
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if (quadUVs == null || quadUVs.Length < 4)
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{
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Debug.Log("非法UV数组");
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return;
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}
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var currentVertCount = vertexHelper.currentVertCount;
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for (var i = 0; i < 4; i++)
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{
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vertexHelper.AddVert(quadPositions[i], color, quadUVs[i]);
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}
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vertexHelper.AddTriangle(currentVertCount, currentVertCount + 1, currentVertCount + 2);
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vertexHelper.AddTriangle(currentVertCount + 2, currentVertCount + 3, currentVertCount);
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}
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public static void AddTriangle(VertexHelper vertexHelper, Vector3[] positions, Color32 color, Vector2[] uvs)
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{
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if (positions == null || positions.Length < 3)
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{
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Debug.Log("非法顶点数组");
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return;
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}
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if (uvs == null || uvs.Length < 3)
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{
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Debug.Log("非法UV数组");
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return;
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}
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var currentVertCount = vertexHelper.currentVertCount;
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for (var i = 0; i < 3; i++)
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{
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vertexHelper.AddVert(positions[i], color, uvs[i]);
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}
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vertexHelper.AddTriangle(currentVertCount, currentVertCount + 1, currentVertCount + 2);
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}
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// public static string GetUIElementRelativePath(UIRoot _root, Transform _transform)
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// {
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// List<Transform> parents = new List<Transform>() { _transform };
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// GetParents(_transform, ref parents);
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// if (parents.Contains(_root.transform))
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// {
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// parents.Remove(_root.transform);
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// }
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// var names = new string[parents.Count];
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// for (int i = 0; i < names.Length; i++)
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// {
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// names[i] = parents[i].gameObject.name;
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// }
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// return string.Join("/", names);
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// }
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public static void GetParents(Transform _transform, ref List<Transform> _parents)
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{
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if (_transform == null || _parents == null)
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{
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return;
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}
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if (_transform.parent != null)
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{
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_parents.Insert(0, _transform.parent);
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GetParents(_transform.parent, ref _parents);
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}
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}
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}
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