/// <summary>
/// Refreshes the sprite's position according to its anchor information.
/// </summary>
/// <param name="sprite"></param>
public static void refreshPosition(this IPositionable sprite)
{
// Get sprite depth
var depth = sprite.position.z;
// Get anchor info
var anchorInfo = sprite.anchorInfo;
// Get parent anchor position
var position = parentAnchorPosition(anchorInfo.ParentUIObject, anchorInfo.ParentUIyAnchor, anchorInfo.ParentUIxAnchor);
// Add position offset
if (anchorInfo.UIPrecision == UIPrecision.Percentage)
{
position.x += UIRelative.xPercentFrom(anchorInfo.UIxAnchor, parentWidth(anchorInfo.ParentUIObject), anchorInfo.OffsetX);
position.y -= UIRelative.yPercentFrom(anchorInfo.UIyAnchor, parentHeight(anchorInfo.ParentUIObject), anchorInfo.OffsetY);
}
else
{
position.x += UIRelative.xPixelsFrom(anchorInfo.UIxAnchor, anchorInfo.OffsetX);
position.y -= UIRelative.yPixelsFrom(anchorInfo.UIyAnchor, anchorInfo.OffsetY);
}
// Adjust for anchor offset
position.x -= UIRelative.xAnchorAdjustment(anchorInfo.UIxAnchor, sprite.width, anchorInfo.OriginUIxAnchor);
position.y += UIRelative.yAnchorAdjustment(anchorInfo.UIyAnchor, sprite.height, anchorInfo.OriginUIyAnchor);
// Set depth
position.z = depth;
// Set new position
sprite.position = position;
}
/// <summary>
/// Returns anchor position for a given parent and fallback to Screen if parent is null.
/// </summary>
/// <param name="sprite">Provided parent</param>
/// <param name="yAnchor">Vertical anchor</param>
/// <param name="xAnchor">Horizontal anchor</param>
/// <returns>Adjusted anchor position</returns>
private static Vector3 parentAnchorPosition(IPositionable sprite, UIyAnchor yAnchor, UIxAnchor xAnchor)
{
Vector3 position;
float width, height;
UIxAnchor originUIxAnchor = UIxAnchor.Left;
UIyAnchor originUIyAnchor = UIyAnchor.Top;
// Determine correct parent values
if (sprite == null)
{
position = Vector3.zero;
width = Screen.width;
height = Screen.height;
}
else
{
position = sprite.position;
width = sprite.width;
height = sprite.height;
originUIxAnchor = sprite.anchorInfo.OriginUIxAnchor;
originUIyAnchor = sprite.anchorInfo.OriginUIyAnchor;
}
// Adjust anchor offset
position.x += UIRelative.xAnchorAdjustment(xAnchor, width, originUIxAnchor);
position.y -= UIRelative.yAnchorAdjustment(yAnchor, height, originUIyAnchor);
return(position);
}
/// <summary>
/// Refreshes the sprite's anchoring offsets according to its parent and position.
/// </summary>
/// <param name="sprite"></param>
public static void refreshAnchorInformation(this IPositionable sprite)
{
// Get anchor info
UIAnchorInfo anchorInfo = sprite.anchorInfo;
// Get anchor positions
Vector3 parentPosition = parentAnchorPosition(anchorInfo.ParentUIObject, anchorInfo.ParentUIyAnchor, anchorInfo.ParentUIxAnchor);
Vector3 diffAnchor = sprite.position - parentPosition;
// Adjust for sprite anchor offset
diffAnchor.x += UIRelative.xAnchorAdjustment(anchorInfo.UIxAnchor, sprite.width, anchorInfo.OriginUIxAnchor);
diffAnchor.y -= UIRelative.yAnchorAdjustment(anchorInfo.UIyAnchor, sprite.height, anchorInfo.OriginUIyAnchor);
// Adjust parent anchor offsets
if (anchorInfo.UIPrecision == UIPrecision.Percentage)
{
anchorInfo.OffsetX = UIRelative.xPercentTo(anchorInfo.UIxAnchor, parentWidth(anchorInfo.ParentUIObject), diffAnchor.x);
anchorInfo.OffsetY = -UIRelative.yPercentTo(anchorInfo.UIyAnchor, parentHeight(anchorInfo.ParentUIObject), diffAnchor.y);
}
else
{
anchorInfo.OffsetX = UIRelative.xPixelsTo(anchorInfo.UIxAnchor, diffAnchor.x);
anchorInfo.OffsetY = -UIRelative.yPixelsTo(anchorInfo.UIyAnchor, diffAnchor.y);
}
// Set update anchor info
sprite.anchorInfo = anchorInfo;
}
