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Multiplication operator for Matrix-Vector transformation and Quaternion-Vector transformations

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Matthias 2016-01-04 12:34:02 +02:00
parent 6ac1c63ff3
commit 66cd883fb4
2 changed files with 77 additions and 2 deletions
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51
Source/OpenTK/Math/Vector3.cs
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@ -1114,6 +1114,29 @@ namespace OpenTK
mat.Row3.Z;
}
/// <summary>Transform a Vector by the given Matrix</summary>
/// <param name="vec">The vector to transform</param>
/// <param name="mat">The desired transformation</param>
/// <returns>The transformed vector</returns>
public static Vector3 Transform(Vector3 vec, Matrix3 mat)
{
Vector3 result;
Transform(ref vec, ref mat, out result);
return result;
}
/// <summary>Transform a Vector by the given Matrix</summary>
/// <param name="vec">The vector to transform</param>
/// <param name="mat">The desired transformation</param>
/// <param name="result">The transformed vector</param>
public static void Transform(ref Vector3 vec, ref Matrix3 mat, out Vector3 result)
{
result = new Vector3(
vec.X * mat.Row0.X + vec.Y * mat.Row1.X + vec.Z * mat.Row2.X,
vec.X * mat.Row0.Y + vec.Y * mat.Row1.Y + vec.Z * mat.Row2.Y,
vec.X * mat.Row0.Z + vec.Y * mat.Row1.Z + vec.Z * mat.Row2.Z);
}
/// <summary>Transform a Vector by the given Matrix</summary>
/// <param name="vec">The vector to transform</param>
/// <param name="mat">The desired transformation</param>
@ -1502,7 +1525,33 @@ namespace OpenTK
vec.Z *= scale.Z;
return vec;
}
/// <summary>
/// Transform a Vector by the given Matrix.
/// </summary>
/// <param name="vec">The vector to transform</param>
/// <param name="mat">The desired transformation</param>
/// <returns></returns>
public static Vector3 operator *(Matrix3 mat, Vector3 vec)
{
Vector3 result;
Vector3.Transform(ref vec, ref mat, out result);
return result;
}
/// <summary>
/// Transforms a vector by a quaternion rotation.
/// </summary>
/// <param name="vec">The vector to transform.</param>
/// <param name="quat">The quaternion to rotate the vector by.</param>
/// <returns></returns>
public static Vector3 operator *(Quaternion quat, Vector3 vec)
{
Vector3 result;
Vector3.Transform(ref vec, ref quat, out result);
return result;
}
/// <summary>
/// Divides an instance by a scalar.
/// </summary>

28
Source/OpenTK/Math/Vector4.cs
View file

@ -1505,7 +1505,33 @@ namespace OpenTK
vec.W *= scale.W;
return vec;
}
/// <summary>
/// Transform a Vector by the given Matrix.
/// </summary>
/// <param name="vec">The vector to transform</param>
/// <param name="mat">The desired transformation</param>
/// <returns></returns>
public static Vector4 operator *(Matrix4 mat, Vector4 vec)
{
Vector4 result;
Vector4.Transform(ref vec, ref mat, out result);
return result;
}
/// <summary>
/// Transforms a vector by a quaternion rotation.
/// </summary>
/// <param name="vec">The vector to transform.</param>
/// <param name="quat">The quaternion to rotate the vector by.</param>
/// <returns></returns>
public static Vector4 operator *(Quaternion quat, Vector4 vec)
{
Vector4 result;
Vector4.Transform(ref vec, ref quat, out result);
return result;
}
/// <summary>
/// Divides an instance by a scalar.
/// </summary>