/// <summary>
/// Changes rectangle scale by a minimum amount in term of area change to match the scale of the user-specified size scale.
/// </summary>
/// <param name="rect">Rectangle.</param>
/// <param name="widthHeightRatio">Width / height ratio that must be satisfied.</param>
/// <param name="correctLocation">Moves rectangle to minimize the impact of scaling regarding original location.</param>
/// <returns>Rectangle that has the same scale as </returns>
public static RectangleF ScaleTo(this RectangleF rect, float widthHeightRatio, bool correctLocation = true)
{
var sizeScale = widthHeightRatio;
var newWidthCandidate = rect.Height * sizeScale;
var newHeightCandidate = rect.Width * (1 / sizeScale);
//if we choose newWidth...
var newWidthAreaChangeFactor = rect.Area() / (newWidthCandidate * rect.Height);
newWidthAreaChangeFactor = newWidthAreaChangeFactor - 1; //for how much the area will change (+/- X percent)
//if we choose newHeight...
var newHeightAreaChangeFactor = rect.Area() / (newHeightCandidate * rect.Width);
newHeightAreaChangeFactor = newHeightAreaChangeFactor - 1; //for how much the area will change (+/- X percent)
if (System.Math.Abs(newWidthAreaChangeFactor) < System.Math.Abs(newHeightAreaChangeFactor))
{
var xOffset = 0f;
if (correctLocation)
xOffset = -(newWidthCandidate - rect.Width) / 2;
return new RectangleF(rect.X + xOffset, rect.Y, newWidthCandidate, rect.Height);
}
else
{
var yOffset = 0f;
if (correctLocation)
yOffset = -(newHeightCandidate - rect.Height) / 2;
return new RectangleF(rect.X, rect.Y + yOffset, rect.Width, newHeightCandidate);
}
}
public static bool IsCurrentArea(this HttpRequestBase request, string area)
{
return request.Area() == area.ToLower();
}
public static bool IsDegenerated(this Rect rectangle)
{
return rectangle.Area() == 0;
}
public static string ToSourceString(this RouteData routeData)
{
if (routeData == null)
{
return "(null)";
}
string source = routeData.Controller() + " -> " + routeData.Action();
if (!string.IsNullOrEmpty(routeData.Area()))
{
source = routeData.Area() + " Area -> " + source;
}
return source;
}
