/// <summary>
/// Rounds the X and Y members of the specified <see cref="RadPoint"/>.
/// </summary>
public static RadPoint Round(RadPoint point)
{
point.X = Math.Round(point.X);
point.Y = Math.Round(point.Y);
return(point);
}
/// <summary>
/// Converts cartesian into polar coordinates.
/// </summary>
/// <param name="point">The point we are converting.</param>
/// <param name="centerPoint">The (0,0) point of the the coordinate system.</param>
/// <param name="reverse">True to reverse the calculated angle using the (360 - angle) expression, false otherwise.</param>
/// <returns> Coordinates as radius and angle (in degrees).</returns>
internal static Tuple <double, double> ToPolarCoordinates(RadPoint point, RadPoint centerPoint, bool reverse = false)
{
var xOffset = point.X - centerPoint.X;
var yLength = Math.Abs(point.Y - centerPoint.Y);
var pointRadius = Math.Sqrt(xOffset * xOffset + yLength * yLength);
double pointAngle = Math.Asin(yLength / pointRadius) * 180 / Math.PI;
// Determine quadrant and adjust the point angle accordingly
if (centerPoint.X < point.X && centerPoint.Y > point.Y)
{
// I quadrant
pointAngle = 360 - pointAngle;
}
else if (centerPoint.X >= point.X && centerPoint.Y > point.Y)
{
// II quadrant
pointAngle += 180;
}
else if (centerPoint.X >= point.X && centerPoint.Y <= point.Y)
{
// III quadrant
pointAngle = 180 - pointAngle;
}
if (reverse)
{
pointAngle = (360 - pointAngle) % 360;
}
return(new Tuple <double, double>(pointRadius, pointAngle));
}
/// <summary>
/// Initializes a new instance of the <see cref="RadRect" /> struct.
/// </summary>
/// <param name="point1">The point1.</param>
/// <param name="point2">The point2.</param>
public RadRect(RadPoint point1, RadPoint point2)
{
this.X = Math.Min(point1.X, point2.X);
this.Y = Math.Min(point1.Y, point2.Y);
this.Width = Math.Max(Math.Max(point1.X, point2.X) - this.X, 0);
this.Height = Math.Max(Math.Max(point1.Y, point2.Y) - this.Y, 0);
}
/// <summary>
/// Gets the point that lies on the arc segment of the ellipse, described by the center and radius parameters.
/// </summary>
public static RadPoint GetArcPoint(double angle, RadPoint center, double radius)
{
double angleInRad = angle * RadMath.DegToRadFactor;
double x = center.X + (Math.Cos(angleInRad) * radius);
double y = center.Y + (Math.Sin(angleInRad) * radius);
return(new RadPoint(x, y));
}
/// <summary>
/// Initializes a new instance of the <see cref="RadCircle"/> struct.
/// </summary>
/// <param name="center">The center.</param>
/// <param name="radius">The radius.</param>
public RadCircle(RadPoint center, double radius)
{
this.Center = center;
this.Radius = radius;
}
public static Point ToPoint(this RadPoint point)
{
return(new Point(point.X, point.Y));
}