/// <summary>
/// 스크린의 특정 피봇 위치에 대한 타겟의 위치를 구한다.
/// </summary>
/// <param name="targetTransform">위치를 얻고자 하는 타겟의 Transform</param>
/// <param name="screenPivot">타겟의 스크린에 대한 PivotPresetType</param>
/// <returns></returns>
public Vector3 GetWorldPosition(
Transform targetTransform,
PivotPresetType screenPivot)
{
if (targetTransform is null)
{
throw new ArgumentNullException(nameof(targetTransform));
}
float2 viewport2;
switch (screenPivot)
{
case PivotPresetType.TopLeft:
viewport2 = Float2.ZeroOne;
break;
case PivotPresetType.TopCenter:
viewport2 = Float2.HalfOne;
break;
case PivotPresetType.TopRight:
viewport2 = Float2.OneOne;
break;
case PivotPresetType.MiddleLeft:
viewport2 = Float2.ZeroHalf;
break;
case PivotPresetType.MiddleCenter:
viewport2 = Float2.HalfHalf;
break;
case PivotPresetType.MiddleRight:
viewport2 = Float2.OneHalf;
break;
case PivotPresetType.BottomLeft:
viewport2 = Float2.ZeroZero;
break;
case PivotPresetType.BottomCenter:
viewport2 = Float2.HalfZero;
break;
case PivotPresetType.BottomRight:
viewport2 = Float2.OneZero;
break;
default:
throw new ArgumentOutOfRangeException(nameof(screenPivot), screenPivot, null);
}
var viewport3 = new float3(
viewport2.x,
viewport2.y,
(targetTransform.position - Transform.position).magnitude);
return(Cam.ViewportToWorldPoint(viewport3));
}
public static PivotPresetType ReverseY(this PivotPresetType pivotPresetType)
{
switch (pivotPresetType)
{
case PivotPresetType.TopLeft:
return(PivotPresetType.BottomLeft);
case PivotPresetType.TopCenter:
return(PivotPresetType.BottomCenter);
case PivotPresetType.TopRight:
return(PivotPresetType.BottomRight);
case PivotPresetType.MiddleLeft:
return(PivotPresetType.MiddleLeft);
case PivotPresetType.MiddleCenter:
return(PivotPresetType.MiddleCenter);
case PivotPresetType.MiddleRight:
return(PivotPresetType.MiddleRight);
case PivotPresetType.BottomLeft:
return(PivotPresetType.TopLeft);
case PivotPresetType.BottomCenter:
return(PivotPresetType.TopCenter);
case PivotPresetType.BottomRight:
return(PivotPresetType.TopRight);
default:
throw new ArgumentOutOfRangeException(nameof(pivotPresetType), pivotPresetType, null);
}
}
public static void SetPivot(this RectTransform rectTransform, PivotPresetType pivotPresetType)
{
switch (pivotPresetType)
{
case PivotPresetType.TopLeft:
rectTransform.pivot = Float2.ZeroOne;
break;
case PivotPresetType.TopCenter:
rectTransform.pivot = Float2.HalfOne;
break;
case PivotPresetType.TopRight:
rectTransform.pivot = Float2.OneOne;
break;
case PivotPresetType.MiddleLeft:
rectTransform.pivot = Float2.ZeroHalf;
break;
case PivotPresetType.MiddleCenter:
rectTransform.pivot = Float2.HalfHalf;
break;
case PivotPresetType.MiddleRight:
rectTransform.pivot = Float2.OneHalf;
break;
case PivotPresetType.BottomLeft:
rectTransform.pivot = Float2.ZeroZero;
break;
case PivotPresetType.BottomCenter:
rectTransform.pivot = Float2.HalfZero;
break;
case PivotPresetType.BottomRight:
rectTransform.pivot = Float2.OneZero;
break;
default:
throw new ArgumentOutOfRangeException(nameof(pivotPresetType), pivotPresetType, null);
}
}
public static bool TryGetPivotPresetType(this RectTransform rectTransform, out PivotPresetType result)
{
int pivotPresetTypeIndex = 0;
switch (rectTransform.pivot.y)
{
case 0:
pivotPresetTypeIndex += 6;
break;
case 0.5f:
pivotPresetTypeIndex += 3;
break;
case 1:
break;
default:
result = default;
return(false);
}
switch (rectTransform.pivot.x)
{
case 0:
break;
case 0.5f:
pivotPresetTypeIndex += 1;
break;
case 1:
pivotPresetTypeIndex += 2;
break;
default:
result = default;
return(false);
}
result = (PivotPresetType)pivotPresetTypeIndex;
return(true);
}
public static void MoveToRelatedPosition(this RectTransform rectTransform, RectTransform target, PivotPresetType pivotPresetType,
float2 offset)
{
if (target is null)
{
return;
}
rectTransform.position = target.position;
float2 anchoredPosition = rectTransform.anchoredPosition;
anchoredPosition += target.GetPivotPositionFromAnchor(pivotPresetType) + offset;
rectTransform.anchoredPosition = anchoredPosition;
}
public static float2 GetAnchoredPositionOfPivot(this RectTransform rectTransform, PivotPresetType pivotPresetType)
{
float2 anchoredPosition = rectTransform.anchoredPosition;
return(anchoredPosition + rectTransform.GetPivotPositionFromAnchor(pivotPresetType));
}
public static float2 GetPivotPositionFromAnchor(this RectTransform rectTransform, PivotPresetType pivotPresetType)
{
var anchoredPosition = new float2();
var pivot = rectTransform.pivot;
var size = rectTransform.rect.size * rectTransform.transform.localScale;
switch (pivotPresetType)
{
case PivotPresetType.TopLeft:
anchoredPosition.x -= pivot.x * size.x;
anchoredPosition.y += (1f - pivot.y) * size.y;
break;
case PivotPresetType.TopCenter:
anchoredPosition.x += (0.5f - pivot.x) * size.x;
anchoredPosition.y += (1f - pivot.y) * size.y;
break;
case PivotPresetType.TopRight:
anchoredPosition.x += (1f - pivot.x) * size.x;
anchoredPosition.y += (1f - pivot.y) * size.y;
break;
case PivotPresetType.MiddleLeft:
anchoredPosition.x -= pivot.x * size.x;
anchoredPosition.y += (0.5f - pivot.y) * size.y;
break;
case PivotPresetType.MiddleCenter:
anchoredPosition.x += (0.5f - pivot.x) * size.x;
anchoredPosition.y += (0.5f - pivot.y) * size.y;
break;
case PivotPresetType.MiddleRight:
anchoredPosition.x += (1f - pivot.x) * size.x;
anchoredPosition.y += (0.5f - pivot.y) * size.y;
break;
case PivotPresetType.BottomLeft:
anchoredPosition.x -= pivot.x * size.x;
anchoredPosition.y -= pivot.y * size.y;
break;
case PivotPresetType.BottomCenter:
anchoredPosition.x += (0.5f - pivot.x) * size.x;
anchoredPosition.y -= pivot.y * size.y;
break;
case PivotPresetType.BottomRight:
anchoredPosition.x += (1f - pivot.x) * size.x;
anchoredPosition.y -= pivot.y * size.y;
break;
default:
throw new ArgumentOutOfRangeException(nameof(pivotPresetType), pivotPresetType, null);
}
return(anchoredPosition);
}
public static void SetAnchorAndPivot(this RectTransform rectTransform, AnchorPresetType anchorPresetType, PivotPresetType pivotPresetType)
{
rectTransform.SetAnchor(anchorPresetType);
rectTransform.SetPivot(pivotPresetType);
}
/// <summary>
/// 스크린의 특정 피봇 위치에 대한 타겟의 위치를 구한다. 이때 타겟 스프라이트의 피봇 또한 고려한다.
/// </summary>
/// <param name="targetTransform">위치를 얻고자 하는 타겟의 Transform</param>
/// <param name="screenPivot">타겟 Sprite의 PivotPresetType</param>
/// <param name="targetSprite">위치를 얻고자자 하는 타겟의 전체 영역을 자치하는 SpriteRenderer</param>
/// <param name="spritePivot">타겟의 스크린에 대한 PivotPresetType</param>
/// <returns></returns>
public Vector3 GetWorldPosition(
Transform targetTransform,
PivotPresetType screenPivot,
Sprite targetSprite,
PivotPresetType spritePivot
)
{
if (targetTransform is null)
{
throw new ArgumentNullException(nameof(targetTransform));
}
if (targetSprite is null)
{
throw new ArgumentNullException(nameof(targetSprite));
}
var position = GetWorldPosition(targetTransform, screenPivot);
var lossyScale = targetTransform.lossyScale;
var ppu = targetSprite.pixelsPerUnit;
var halfSizeAsUnit = new Vector3(
lossyScale.x * targetSprite.rect.width / ppu / 2f,
lossyScale.y * targetSprite.rect.height / ppu / 2f);
Vector3 spritePivotPosition;
switch (spritePivot)
{
case PivotPresetType.TopLeft:
spritePivotPosition = new Vector3(-halfSizeAsUnit.x, halfSizeAsUnit.y);
break;
case PivotPresetType.TopCenter:
spritePivotPosition = new Vector3(0f, halfSizeAsUnit.y);
break;
case PivotPresetType.TopRight:
spritePivotPosition = new Vector3(halfSizeAsUnit.x, halfSizeAsUnit.y);
break;
case PivotPresetType.MiddleLeft:
spritePivotPosition = new Vector3(-halfSizeAsUnit.x, 0f);
break;
case PivotPresetType.MiddleCenter:
spritePivotPosition = Vector3.zero;
break;
case PivotPresetType.MiddleRight:
spritePivotPosition = new Vector3(halfSizeAsUnit.x, 0f);
break;
case PivotPresetType.BottomLeft:
spritePivotPosition = new Vector3(-halfSizeAsUnit.x, -halfSizeAsUnit.y);
break;
case PivotPresetType.BottomCenter:
spritePivotPosition = new Vector3(0f, -halfSizeAsUnit.y);
break;
case PivotPresetType.BottomRight:
spritePivotPosition = new Vector3(halfSizeAsUnit.x, -halfSizeAsUnit.y);
break;
default:
throw new ArgumentOutOfRangeException(nameof(spritePivot), spritePivot, null);
}
return(position - spritePivotPosition);
}
