public static bool IsX(this RectAnchor anchor)
{
switch (anchor)
{
case RectAnchor.Left:
case RectAnchor.Right:
case RectAnchor.XStretch:
case RectAnchor.XCenter:
return(true);
}
return(false);
}
public static void SetAnchor(this RectTransform trans, RectAnchor anchor)
{
if (anchor.IsX())
{
trans.anchorMin = new Vector2(anchor.Min(), trans.anchorMin.y);
trans.anchorMax = new Vector2(anchor.Max(), trans.anchorMax.y);
}
else
{
trans.anchorMin = new Vector2(trans.anchorMin.x, anchor.Min());
trans.anchorMax = new Vector2(trans.anchorMax.x, anchor.Max());
}
}
public static GameObject CreatePanel(string name, Color color, Transform parent, RectAnchor anchorX, RectAnchor anchorY)
{
GameObject go = new GameObject(name);
go.AddComponent <CanvasRenderer>();
RectTransform trans = go.AddComponent <RectTransform>();
Image img = go.AddComponent <Image>();
img.color = color;
trans.SetParent(parent);
trans.SetAnchor(anchorX);
trans.SetAnchor(anchorY);
trans.offsetMin = Vector2.zero;
trans.offsetMax = Vector2.zero;
return(go);
}
public static float Max(this RectAnchor anchor)
{
switch (anchor)
{
case RectAnchor.Left:
case RectAnchor.Bottom:
return(0.0f);
case RectAnchor.XStretch:
case RectAnchor.YStretch:
case RectAnchor.Right:
case RectAnchor.Top:
return(1.0f);
case RectAnchor.XCenter:
case RectAnchor.YCenter:
return(0.5f);
}
return(0.0f);
}
public static Vector3 AnchoredPosition(RectTransform origin,
RectTransform target,
RectAnchor pos,
float offset)
{
var originCorners = new Vector3[4];
origin.GetWorldCorners(originCorners);
var retVal = new Vector3(0, 0, 0);
switch (pos)
{
case RectAnchor.Top:
retVal = ((originCorners[1] + originCorners[2]) * 0.5f) +
new Vector3(0, target.rect.height / 2f + offset, 0);
break;
case RectAnchor.Bottom:
retVal = ((originCorners[0] + originCorners[3]) * 0.5f) -
new Vector3(0, target.rect.height / 2f + offset, 0);
break;
case RectAnchor.Left:
retVal = ((originCorners[0] + originCorners[1]) * 0.5f) -
new Vector3(target.rect.width / 2f + offset, 0, 0);
break;
case RectAnchor.Right:
retVal = ((originCorners[2] + originCorners[3]) * 0.5f) +
new Vector3(target.rect.width / 2f + offset, 0, 0);
break;
}
return(retVal);
}
public void SetAnchor(RectTransform rectTran, RectAnchor anchor, float posX = 0, float posY = 0)
{
switch (anchor)
{
case RectAnchor.UpperLeft:
rectTran.pivot = Vector2.up;
rectTran.anchorMin = Vector2.up;
rectTran.anchorMax = Vector2.up;
rectTran.anchoredPosition3D = Vector3.zero;
rectTran.localScale = Vector3.one;
break;
case RectAnchor.UpperCenter:
rectTran.pivot = Vector2.up + Vector2.right * 0.5f;
rectTran.anchorMin = Vector2.up + Vector2.right * 0.5f;
rectTran.anchorMax = Vector2.up + Vector2.right * 0.5f;
rectTran.anchoredPosition3D = Vector3.right * posX + Vector3.up * posY + Vector3.zero;
rectTran.localScale = Vector3.one;
break;
case RectAnchor.UpperRight:
rectTran.pivot = Vector2.one;
rectTran.anchorMin = Vector2.up + Vector2.right;
rectTran.anchorMax = Vector2.up + Vector2.right;
rectTran.anchoredPosition3D = Vector3.right * posX + Vector3.up * posY + Vector3.zero;
rectTran.localScale = Vector3.one;
break;
case RectAnchor.MiddleLeft:
rectTran.pivot = Vector2.up * 0.5f;
rectTran.anchorMin = Vector2.up * .5f;
rectTran.anchorMax = Vector2.up * .5f;
rectTran.anchoredPosition3D = Vector3.right * posX + Vector3.up * posY + Vector3.zero;
rectTran.localScale = Vector3.one;
break;
case RectAnchor.MiddleCenter:
rectTran.pivot = Vector2.one * .5f;
rectTran.anchorMin = Vector2.up * 0.5f + Vector2.right * 0.5f;
rectTran.anchorMax = Vector2.up * 0.5f + Vector2.right * 0.5f;
rectTran.anchoredPosition3D = Vector3.right * posX + Vector3.up * posY + Vector3.zero;
rectTran.localScale = Vector3.one;
break;
case RectAnchor.MiddleRight:
rectTran.pivot = Vector2.up * .5f + Vector2.right;
rectTran.anchorMin = Vector2.up * .5f + Vector2.right;
rectTran.anchorMax = Vector2.up * .5f + Vector2.right;
rectTran.anchoredPosition3D = Vector3.right * posX + Vector3.up * posY + Vector3.zero;
rectTran.localScale = Vector3.one;
break;
case RectAnchor.LowerLeft:
rectTran.pivot = Vector2.zero;
rectTran.anchorMin = Vector2.zero;
rectTran.anchorMax = Vector2.zero;
rectTran.anchoredPosition3D = Vector3.right * posX + Vector3.up * posY + Vector3.zero;
rectTran.localScale = Vector3.one;
break;
case RectAnchor.LowerCenter:
rectTran.pivot = Vector2.right * .5f;
rectTran.anchorMin = Vector2.right * .5f;
rectTran.anchorMax = Vector2.right * .5f;
rectTran.anchoredPosition3D = Vector3.right * posX + Vector3.up * posY + Vector3.zero;
rectTran.localScale = Vector3.one;
break;
case RectAnchor.LowerRight:
rectTran.pivot = Vector2.right;
rectTran.anchorMin = Vector2.right;
rectTran.anchorMax = Vector2.right;
rectTran.anchoredPosition3D = Vector3.right * posX + Vector3.up * posY + Vector3.zero;
rectTran.localScale = Vector3.one;
break;
default:
break;
}
}
public void SetAnchor(Graphic graphic, RectAnchor anchor, float posX = 0, float posY = 0)
{
SetAnchor(graphic.GetComponent <RectTransform>(), anchor, posX, posY);
}
