/// <summary>
/// Rotates a point around a reference point by the provide angle in radians
/// </summary>
/// <param name="point">The point to rotate</param>
/// <param name="referencePoint">The reference point to rotate about</param>
/// <param name="angle">The angle to rotate it in radians</param>
/// <returns>The rotated point</returns>
public static IPoint Rotate(IPoint point, IPoint referencePoint, double angle)
{
var sine = Math.Sin(angle);
var cosine = Math.Cos(angle);
var pointOut = new LucidPoint(point.X - referencePoint.X, point.Y - referencePoint.Y);
var newX = pointOut.X * cosine - pointOut.Y * sine;
var newY = pointOut.X * sine + pointOut.Y * cosine;
pointOut.X = newX + referencePoint.X;
pointOut.Y = newY + referencePoint.Y;
return(pointOut);
}
public static ILucidGeometry Create(string geometryJson)
{
if (geometryJson.Contains("\"x\""))
{
return(LucidPoint.Create(geometryJson));
}
if (geometryJson.Contains("\"xmax\""))
{
return(LucidExtent.Create(geometryJson));
}
if (geometryJson.Contains("\"paths\""))
{
return(LucidLine.Create(geometryJson));
}
if (geometryJson.Contains("\"rings\""))
{
return(LucidPolygon.Create(geometryJson));
}
throw new Exception($"Unrecognized geometry type {geometryJson}");
}
/// <summary>
/// Determines the angle in radians of a targetPoint vector with the origin being (0,0).
/// </summary>
/// <param name="targetPoint">The point to find the angle of.</param>
/// <returns>The angle of the target point about (0,0)</returns>
public static double Angle(IPoint targetPoint)
{
return(Angle(LucidPoint.Create(0, 0), targetPoint));
}