/// <summary>
/// Constrains a rectangle to be contained with another rectangle's edges.
/// </summary>
static public void Constrain(ref Rect ioRect, Rect inRegion, RectEdges inEdges = RectEdges.All)
{
if (inEdges == 0)
{
return;
}
float leftDist = Mathf.Max(inRegion.xMin - ioRect.xMin, 0);
float rightDist = Mathf.Max(ioRect.xMax - inRegion.xMax, 0);
float topDist = Mathf.Max(ioRect.yMax - inRegion.yMax, 0);
float bottomDist = Mathf.Max(inRegion.yMin - ioRect.yMin, 0);
if ((inEdges & RectEdges.Left) == 0)
{
leftDist = 0;
}
if ((inEdges & RectEdges.Right) == 0)
{
rightDist = 0;
}
if ((inEdges & RectEdges.Top) == 0)
{
topDist = 0;
}
if ((inEdges & RectEdges.Bottom) == 0)
{
bottomDist = 0;
}
ioRect.x += leftDist - rightDist;
ioRect.y += bottomDist - topDist;
}
/// <summary>
/// Constrains a position to be contained with another rectangle's edges.
/// </summary>
static public void Constrain(ref Vector2 ioCenter, Vector2 inSize, Rect inRegion, RectEdges inEdges = RectEdges.All)
{
if (inEdges == 0)
{
return;
}
float leftDist = Mathf.Max(inRegion.xMin - (ioCenter.x - inSize.x / 2), 0);
float rightDist = Mathf.Max((ioCenter.x + inSize.x / 2) - inRegion.xMax, 0);
float topDist = Mathf.Max((ioCenter.y + inSize.y / 2) - inRegion.yMax, 0);
float bottomDist = Mathf.Max(inRegion.yMin - (ioCenter.y - inSize.y / 2), 0);
if ((inEdges & RectEdges.Left) == 0)
{
leftDist = 0;
}
if ((inEdges & RectEdges.Right) == 0)
{
rightDist = 0;
}
if ((inEdges & RectEdges.Top) == 0)
{
topDist = 0;
}
if ((inEdges & RectEdges.Bottom) == 0)
{
bottomDist = 0;
}
ioCenter.x += leftDist - rightDist;
ioCenter.y += bottomDist - topDist;
}
/// <summary>
/// Constrains a rectangle to be contained with another rectangle's edges.
/// </summary>
static public Rect Constrain(Rect inRect, Rect inRegion, RectEdges inEdges = RectEdges.All)
{
Constrain(ref inRect, inRegion, inEdges);
return(inRect);
}
/// <summary>
/// Constrains a position to be contained with another rectangle's edges.
/// </summary>
static public Vector2 Constrain(Vector2 inCenter, Vector2 inSize, Rect inRegion, RectEdges inEdges = RectEdges.All)
{
Constrain(ref inCenter, inSize, inRegion, inEdges);
return(inCenter);
}