世界坐标转换本地坐标
public Transform ObjectPos;
public void CdPos()
{
Transform parent=ObjectorPos;
vector3 local=parent.InverseTransformPoint(parent.transform);
vector3 pos=parent.TransformPoint(local);
//这里的pos就是本地左标，也就是Inspector面板上的坐标
}
//世界坐标转屏幕坐标
Vector3 screenpos = camera,main.WorldToScreenPoint( ObjectPos.position);
//屏幕转世界
Vector3 worldPos = canvas.main.ScreenToWorldPoint(new Vector3(screenpos.x, screenpos.y, uictrl.uiCanvas.transform.position.z));
//这里都是在主相机下的左边转换
贴出一段我工作中不同Canvas下不同相机坐标转换物体移动， 一个canvas的相机是正交，一个是透视，坐标转换
var correctPos = uiMjSort.transform;
var uictrl = UIControl.Instance;
Vector3 screenpos = uictrl.game_Camera.WorldToScreenPoint(correctPos.position);
Vector3 worldPos = uictrl.ui_Camera.ScreenToWorldPoint(new Vector3(screenpos.x, screenpos.y, uictrl.uiCanvas.transform.position.z));
correctPos.SetParent(uictrl.uiCanvas.transform);
correctPos.position = worldPos;
correctPos.localScale = new Vector3(uictrl.GetScaleCanera(uictrl.game_Camera.transform.position.z), uictrl.GetScaleCanera(uictrl.game_Camera.transform.position.z), uictrl.GetScaleCanera(uictrl.game_Camera.transform.position.z));坐标转换后需要修正缩放值
var mjBox = uictrl.uiGame.MahjongBox;
correctPos.DOScale(new Vector3(0.7f, 0.65f, 0.65f), 0.7f);//dotween缩放
correctPos.DOMove(mjBox.transform.position, 0.7f).OnComplete(delegate { correctPos.SetParent(mjBox.transform);//移动，效果就是一边移动一边缩放
ps：我的分辨率是720x1280；
///
/// 根据缩放求相机距离
///
///
///
private float GetDistanceCamera(float scale)
{
return -(1280f / scale * 0.5f) / Mathf.Tan(Mathf.Deg2Rad * game_Camera.fieldOfView * 0.5f);
}
///
/// 根据距离求缩放值
///
///
///
public float GetScaleCanera(float distance)
{
float num = distance * Mathf.Tan(Mathf.Deg2Rad * game_Camera.fieldOfView * 0.5f);
float scl = 640f / num;
return Mathf.Abs(640f / num);
}