/// <summary>
/// Aligns target vertically and horisontally inside specified bounds.
/// </summary>
public static void Align(this DisplayObject target, Rect bounds, HAlign horizontal, VAlign vertical, bool snapToPixels = false)
{
var objectBounds = target.GetLocalBounds();
var x = objectBounds.x;
var y = objectBounds.y;
switch (horizontal)
{
case HAlign.LEFT:
x = bounds.xMin;
break;
case HAlign.CENTER:
x = 0.5f * (bounds.xMin + bounds.xMax - objectBounds.width);
break;
case HAlign.RIGHT:
x = bounds.xMax - objectBounds.width;
break;
}
switch (vertical)
{
case VAlign.TOP:
y = bounds.yMin;
break;
case VAlign.MIDDLE:
y = 0.5f * (bounds.yMin + bounds.yMax - objectBounds.height);
break;
case VAlign.BOTTOM:
y = bounds.yMax - objectBounds.height;
break;
}
target.x += x - objectBounds.xMin;
target.y += y - objectBounds.yMin;
if (snapToPixels)
{
target.position = target.position.RoundToInt();
}
}
/// <summary>
/// Adjusts position to ensure that object's bounds aren't outside the specified bounds
/// </summary>
public static void ClampBounds(this DisplayObject target, Rect bounds)
{
var rect = target.GetLocalBounds();
if (rect.xMin < bounds.xMin)
{
target.x += bounds.xMin - rect.xMin;
}
else if (rect.xMax > bounds.xMax)
{
target.x += bounds.xMax - rect.xMax;
}
if (rect.yMin < bounds.yMin)
{
target.y += bounds.yMin - rect.yMin;
}
else if (rect.yMax > bounds.yMax)
{
target.y += bounds.yMax - rect.yMax;
}
}
