Added mathematical constants used by XNA (Pi, E, logarithms).

Removed unused code.
This commit is contained in:
the_fiddler 2009-08-14 14:15:30 +00:00
parent 84a42514e8
commit 1beceffa2a

View file

@ -15,10 +15,80 @@ using System.Text;
namespace OpenTK
{
/// <summary>
/// Contains mathematical functions for the OpenTK.Math toolkit.
/// Contains common mathematical functions and constants.
/// </summary>
public static class MathHelper
{
#region Fields
/// <summary>
/// Defines the value of Pi as a <see cref="System.Single"/>.
/// </summary>
public const float Pi = 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930382f;
/// <summary>
/// Defines the value of Pi divided by two as a <see cref="System.Single"/>.
/// </summary>
public const float PiOver2 = Pi / 2;
/// <summary>
/// Defines the value of Pi divided by three as a <see cref="System.Single"/>.
/// </summary>
public const float PiOver3 = Pi / 3;
/// <summary>
/// Definesthe value of Pi divided by four as a <see cref="System.Single"/>.
/// </summary>
public const float PiOver4 = Pi / 4;
/// <summary>
/// Defines the value of Pi divided by six as a <see cref="System.Single"/>.
/// </summary>
public const float PiOver6 = Pi / 6;
/// <summary>
/// Defines the value of Pi multiplied by two as a <see cref="System.Single"/>.
/// </summary>
public const float TwoPi = 2 * Pi;
/// <summary>
/// Defines the value of Pi multiplied by 3 and divided by two as a <see cref="System.Single"/>.
/// </summary>
public const float ThreePiOver2 = 3 * Pi / 2;
/// <summary>
/// Defines the value of E as a <see cref="System.Single"/>.
/// </summary>
public const float E = 2.71828182845904523536f;
/// <summary>
/// Defines the base-10 logarithm of E.
/// </summary>
public const float Log10E = 0.434294482f;
/// <summary>
/// Defines the base-2 logarithm of E.
/// </summary>
public const float Log2E = 1.442695041f;
[Obsolete]
public static readonly float PIF = 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930382f;
[Obsolete]
public static readonly float RTODF = 180.0f / PIF;
[Obsolete]
public static readonly float DTORF = PIF / 180.0f;
[Obsolete]
public static readonly double PI = 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930382d;
[Obsolete]
public static readonly double RTOD = 180.0d / PIF;
[Obsolete]
public static readonly double DTOR = PIF / 180.0d;
#endregion
#region Public Members
#region NextPowerOfTwo
/// <summary>
@ -182,16 +252,13 @@ namespace OpenTK
#endregion
public static readonly float PIF = 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930382f;
public static readonly float RTODF = 180.0f / PIF;
public static readonly float DTORF = PIF / 180.0f;
public static readonly double PI = 3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930382d;
public static readonly double RTOD = 180.0d / PIF;
public static readonly double DTOR = PIF / 180.0d;
#region Swap
/// <summary>
/// Swaps two double values.
/// </summary>
/// <param name="a">The first value.</param>
/// <param name="b">The second value.</param>
public static void Swap(ref double a, ref double b)
{
double temp = a;
@ -199,6 +266,11 @@ namespace OpenTK
b = temp;
}
/// <summary>
/// Swaps two float values.
/// </summary>
/// <param name="a">The first value.</param>
/// <param name="b">The second value.</param>
public static void Swap(ref float a, ref float b)
{
float temp = a;
@ -207,128 +279,7 @@ namespace OpenTK
}
#endregion
}
#if false
public static partial class Math
{
#region --- Vectors ---
#region --- Addition ---
/// <summary>
/// Adds the given Vector2 to the current Vector3.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector3 containing the result of the addition.</returns>
public static Vector2 Add(Vector2 left, Vector2 right)
{
return new Vector2(left).Add(right);
}
/// <summary>
/// Adds the given Vector3 to the current Vector3.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector3 containing the result of the addition.</returns>
public static Vector3 Add(Vector2 left, Vector3 right)
{
return new Vector3(left).Add(right);
}
/// <summary>
/// Adds the given Vector4 to the current Vector3. W-coordinate remains unaffected.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector4 containing the result of the addition.</returns>
public static Vector4 Add(Vector2 left, Vector4 right)
{
return new Vector4(left).Add(right);
}
/// <summary>
/// Adds the given Vector2 to the current Vector3.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector3 containing the result of the addition.</returns>
public static Vector3 Add(Vector3 left, Vector2 right)
{
return new Vector3(left).Add(right);
}
/// <summary>
/// Adds the given Vector3 to the current Vector3.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector3 containing the result of the addition.</returns>
public static Vector3 Add(Vector3 left, Vector3 right)
{
return new Vector3(left).Add(right);
}
/// <summary>
/// Adds the given Vector4 to the current Vector3. W-coordinate remains unaffected.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector4 containing the result of the addition.</returns>
public static Vector4 Add(Vector3 left, Vector4 right)
{
return new Vector4(left).Add(right);
}
/// <summary>
/// Adds the given Vector2 to the current Vector3.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector3 containing the result of the addition.</returns>
public static Vector4 Add(Vector4 left, Vector2 right)
{
return new Vector4(left).Add(right);
}
/// <summary>
/// Adds the given Vector3 to the current Vector3.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector3 containing the result of the addition.</returns>
public static Vector4 Add(Vector4 left, Vector3 right)
{
return new Vector4(left).Add(right);
}
/// <summary>
/// Adds the given Vector4 to the current Vector3. W-coordinate remains unaffected.
/// </summary>
/// <param name="right">The right operand of the addition.</param>
/// <returns>A new Vector4 containing the result of the addition.</returns>
public static Vector4 Add(Vector4 left, Vector4 right)
{
return new Vector4(left).Add(right);
}
#endregion
#region --- Subtraction ---
#endregion
#region --- Cross ---
/// <summary>
/// Computes the cross product between the current and the given Vector3. The current Vector3 is set to the result of the computation.
/// </summary>
/// <param name="right">The right operand of the cross product</param>
/// <returns>The current </returns>
public static Vector3 Cross(Vector3 left, Vector3 right)
{
return new Vector3(left).Cross(right);
}
#endregion
#endregion
}
#endif
}