标签：fillOrigin 0.5 Mathf fillAmount tempPointX tempPointY UIImageFilledSide
获取Image在filled模式下当前填充的位置
/*
** Created by lvzj
** DateTime: 2021-09-21 16:24:51
** Description: ui特效跟随fillamount位置
*/
using System;
using UnityEngine;
using UnityEngine.UI;
// [ExecuteAlways]
public class UIFilledExtend : MonoBehaviour
{
public GameObject obj;
// 是否翻转图片
public bool flip;
// 映射到图片边缘
public bool onSide;
// 距离旋转点偏移量
[Range(0, 1)]
public float offset = 0.5f;
Vector2[] _points = new Vector2[3];
private Image _image;
private RectTransform _rectTransform;
// 旋转
private Vector3 _tempRotate = Vector3.zero;
// 测试点位
public Image[] pointImages = new Image[3];
private bool CheckFilledExtend()
{
if (obj == null) return false;
_image = transform.GetComponent<Image>();
return _image.type == Image.Type.Filled;
}
private void Start()
{
_image = transform.GetComponent<Image>();
_rectTransform = transform.GetComponent<RectTransform>();
}
private void Update()
{
if (CheckFilledExtend())
{
GetPosition();
SetObjPosition();
}
}
private void GetPosition()
{
_image = transform.GetComponent<Image>();
_rectTransform = transform.GetComponent<RectTransform>();
float fillAmount = _image.fillAmount;
bool fillClockwise = _image.fillClockwise;
int fillOrigin = _image.fillOrigin;
float amount = Mathf.Pow(-1, fillOrigin);
float pos = fillAmount * amount + fillOrigin;
// 原点
float point0X;
float point0Y;
// 目标点
float tempPointX;
float tempPointY;
float deltaX;
float deltaY;
float absX;
float absY;
switch (_image.fillMethod)
{
case Image.FillMethod.Horizontal:
point0X = tempPointX = pos;
point0Y = 0;
tempPointY = 1f;
_tempRotate = Vector3.zero;
break;
case Image.FillMethod.Vertical:
point0X = 0;
point0Y = tempPointY = pos;
tempPointX = 1f;
_tempRotate = Vector3.zero;
break;
case Image.FillMethod.Radial90:
point0X = fillOrigin < 2 ? 0 : 1;
point0Y = fillOrigin < 2 ? fillOrigin % 2 : (fillOrigin - 1) % 2;
float rad;
bool isTop = fillOrigin % 3 != 0;
fillClockwise = isTop ? !fillClockwise : fillClockwise;
rad = Trans01(fillAmount, fillClockwise == fillOrigin < 2) * 90f * Mathf.Deg2Rad;
tempPointX = Trans01(Mathf.Cos(rad), fillOrigin >= 2);
tempPointY = Trans01(Mathf.Sin(rad), isTop);
if (onSide)
{
deltaX = tempPointX - point0X;
deltaY = tempPointY - point0Y;
absX = Mathf.Abs(deltaX);
absY = Mathf.Abs(deltaY);
if (absX > absY)
{
tempPointY = deltaY * (1.0f / absX) + point0Y;
tempPointX = fillOrigin >= 2 ? 0 : 1;
}
else
{
tempPointX = deltaX * (1.0f / absY) + point0X;
tempPointY = isTop ? 0 : 1;
}
}
break;
case Image.FillMethod.Radial180:
point0X = Mathf.Abs((fillOrigin - 1) / 2.0f);
point0Y = fillOrigin % 2 == 0 ? fillOrigin / 2.0f : 0.5f;
//bottom
if (fillOrigin == 0)
{
tempPointX = Mathf.Cos(Trans01(fillAmount, fillClockwise) * 180f * Mathf.Deg2Rad) / 2.0f + 0.5f;
tempPointY = Mathf.Sin(fillAmount * 180f * Mathf.Deg2Rad);
}
//top
else if (fillOrigin == 2)
{
tempPointX = Mathf.Cos(Trans01(fillAmount, !fillClockwise) * 180f * Mathf.Deg2Rad) / 2.0f + 0.5f;
tempPointY = 1 - Mathf.Sin(fillAmount * 180f * Mathf.Deg2Rad);
}
//left
else if (fillOrigin == 1)
{
tempPointX = Mathf.Sin(fillAmount * 180f * Mathf.Deg2Rad);
tempPointY = Mathf.Cos(Trans01(fillAmount, !fillClockwise) * 180f * Mathf.Deg2Rad) / 2.0f + 0.5f;
}
// right fillOrigin == 3
else
{
tempPointX = 1 - Mathf.Sin(fillAmount * 180f * Mathf.Deg2Rad);
tempPointY = Mathf.Cos(Trans01(fillAmount, fillClockwise) * 180f * Mathf.Deg2Rad) / 2.0f + 0.5f;
}
if (onSide)
{
deltaX = (tempPointX - point0X) / (fillOrigin % 2 == 1 ? 2.0f : 1.0f);
deltaY = (tempPointY - point0Y) / (fillOrigin % 2 == 0 ? 2.0f : 1.0f);
absX = Mathf.Abs(deltaX);
absY = Mathf.Abs(deltaY);
if (absX > absY)
{
tempPointY = deltaY / (fillOrigin % 2 == 1 ? 2.0f : 1.0f) * (1.0f / absX) + point0Y;
tempPointX = deltaX >= 0 ? 1 : 0;
}
else
{
tempPointX = deltaX / (fillOrigin % 2 == 0 ? 2.0f : 1.0f) * (1.0f / absY) + point0X;
tempPointY = deltaY >= 0 ? 1 : 0;
}
}
break;
case Image.FillMethod.Radial360:
point0X = point0Y = 0.5f;
// right
if (fillOrigin == 1)
{
tempPointX = Mathf.Cos(Trans01(fillAmount, fillClockwise) * 360f * Mathf.Deg2Rad) / 2.0f + 0.5f;
tempPointY = Mathf.Sin(Trans01(fillAmount, fillClockwise) * 360f * Mathf.Deg2Rad) / 2.0f + 0.5f;
}
// left
else if (fillOrigin == 3)
{
tempPointX = 1 - Mathf.Cos(Trans01(fillAmount, fillClockwise) * 360f * Mathf.Deg2Rad) / 2.0f - 0.5f;
tempPointY = Mathf.Sin(Trans01(fillAmount, !fillClockwise) * 360f * Mathf.Deg2Rad) / 2.0f + 0.5f;
}
// bottom
else if (fillOrigin == 0)
{
tempPointX = Mathf.Sin(Trans01(fillAmount, fillClockwise) * 360f * Mathf.Deg2Rad) / 2.0f + 0.5f;
tempPointY = 1 - Mathf.Cos(Trans01(fillAmount, !fillClockwise) * 360f * Mathf.Deg2Rad) / 2.0f -
0.5f;
}
// top
else
{
tempPointX = Mathf.Sin(Trans01(fillAmount, !fillClockwise) * 360f * Mathf.Deg2Rad) / 2.0f + 0.5f;
tempPointY = Mathf.Cos(Trans01(fillAmount, fillClockwise) * 360f * Mathf.Deg2Rad) / 2.0f + 0.5f;
}
if (onSide)
{
deltaX = tempPointX - point0X;
deltaY = tempPointY - point0Y;
absX = Mathf.Abs(deltaX);
absY = Mathf.Abs(deltaY);
if (absX > absY)
{
tempPointY = deltaY * (0.5f / absX) + point0Y;
tempPointX = deltaX >= 0 ? 1 : 0;
}
else
{
tempPointX = deltaX * (0.5f / absY) + point0X;
tempPointY = deltaY >= 0 ? 1 : 0;
}
}
break;
default:
throw new ArgumentOutOfRangeException();
}
// 旋转
_tempRotate = new Vector3(0, 0,
Mathf.Atan((tempPointY - point0Y) / (tempPointX - point0X)) * Mathf.Rad2Deg + (flip ? (-90) : 90));
// [0,180]->[0,360]
if (tempPointX - point0X < 0)
{
_tempRotate.z += 180;
}
// offset
Vector2 vector2 = new Vector2(tempPointX - point0X, tempPointY - point0Y);
vector2 *= offset;
tempPointX = vector2.x + point0X;
tempPointY = vector2.y + point0Y;
// 设置点位
_points = new[]
{
new Vector2(point0X, point0Y),
new Vector2((point0X + tempPointX) / 2, (point0Y + tempPointY) / 2),
new Vector2(tempPointX, tempPointY),
};
// 对应到ui点上(测试点位)
for (int i = 0; i < pointImages.Length; i++)
{
pointImages[i].rectTransform.anchoredPosition = new Vector2(
(_points[i].x - 0.5f) * _rectTransform.sizeDelta.x + _rectTransform.anchoredPosition.x,
(_points[i].y - 0.5f) * _rectTransform.sizeDelta.y + _rectTransform.anchoredPosition.y);
pointImages[i].transform.rotation = Quaternion.Euler(_tempRotate);
}
}
private void SetObjPosition()
{
if (!obj) return;
var sizeDelta = _rectTransform.sizeDelta;
var position = _rectTransform.transform.localPosition;
obj.GetComponent<RectTransform>().transform.localPosition = new Vector2(
(_points[2].x - 0.5f) * sizeDelta.x + position.x,
(_points[2].y - 0.5f) * sizeDelta.y + position.y);
obj.GetComponent<RectTransform>().transform.rotation = Quaternion.Euler(_tempRotate);
}
private float Trans01(float value, bool needTrans)
{
if (needTrans)
return 1 - value;
return value;
}
}
标签：fillOrigin,0.5,Mathf,fillAmount,tempPointX,tempPointY,UIImageFilledSide 来源： https://blog.csdn.net/weixin_44054505/article/details/120364223
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