Angle
Represents an angle value.
using System;
namespace AngleSharp.Css.Values
{
public struct Angle : IEquatable<Angle>, IComparable<Angle>, IFormattable
{
public enum Unit : ushort
{
Deg,
Rad,
Grad,
Turn
}
public static readonly Angle Zero = default(Angle);
public static readonly Angle HalfQuarter = new Angle(45, Unit.Deg);
public static readonly Angle Quarter = new Angle(90, Unit.Deg);
public static readonly Angle TripleHalfQuarter = new Angle(135, Unit.Deg);
public static readonly Angle Half = new Angle(180, Unit.Deg);
private readonly float _value;
private readonly Unit _unit;
public float Value {
get {
switch (_unit) {
case Unit.Deg:
return (float)(0.017453292519943295 * (double)_value);
case Unit.Grad:
return (float)(0.015707963267948967 * (double)_value);
case Unit.Turn:
return (float)(6.283185307179586 * (double)_value);
default:
return _value;
}
}
}
public Unit Type => _unit;
public string UnitString {
get {
switch (_unit) {
case Unit.Deg:
return Units.Deg;
case Unit.Grad:
return Units.Grad;
case Unit.Turn:
return Units.Turn;
case Unit.Rad:
return Units.Rad;
default:
return string.Empty;
}
}
}
public Angle(float value, Unit unit)
{
_value = value;
_unit = unit;
}
public static explicit operator float(Angle angle)
{
return angle.Value;
}
public float Tan()
{
return (float)Math.Tan((double)Value);
}
public float Cos()
{
return (float)Math.Cos((double)Value);
}
public float Sin()
{
return (float)Math.Sin((double)Value);
}
public bool Equals(Angle other)
{
return Value == other.Value;
}
public int CompareTo(Angle other)
{
return Value.CompareTo(other.Value);
}
public override bool Equals(object obj)
{
if (obj is Angle)
return Equals((Angle)obj);
return false;
}
public override int GetHashCode()
{
return (int)_value;
}
public override string ToString()
{
return _value.ToString() + UnitString;
}
public string ToString(string format, IFormatProvider formatProvider)
{
return _value.ToString(format, formatProvider) + UnitString;
}
}
}