/// <summary>Sets the value of this vector to the normalization of vector v1.</summary>
/// <remarks>Sets the value of this vector to the normalization of vector v1.</remarks>
/// <param name="v1">the un-normalized vector</param>
public void Normalize(Vector4f v1)
{
float norm;
norm = (float)(1.0 / Math.Sqrt(v1.x * v1.x + v1.y * v1.y + v1.z * v1.z + v1.w * v1
.w));
this.x = v1.x * norm;
this.y = v1.y * norm;
this.z = v1.z * norm;
this.w = v1.w * norm;
}
/// <summary>Constructs and initializes a Vector4f from the specified Vector4f.</summary>
/// <remarks>Constructs and initializes a Vector4f from the specified Vector4f.</remarks>
/// <param name="v1">the Vector4f containing the initialization x y z w data</param>
public Vector4f(Vector4f v1)
: base(v1)
{
}
/// <summary>returns the dot product of this vector and v1</summary>
/// <param name="v1">the other vector</param>
/// <returns>the dot product of this vector and v1</returns>
public float Dot(Vector4f v1)
{
return (this.x * v1.x + this.y * v1.y + this.z * v1.z + this.w * v1.w);
}
/// <summary>
/// Returns the (4-space) angle in radians between this vector and
/// the vector parameter; the return value is constrained to the
/// range [0,PI].
/// </summary>
/// <remarks>
/// Returns the (4-space) angle in radians between this vector and
/// the vector parameter; the return value is constrained to the
/// range [0,PI].
/// </remarks>
/// <param name="v1">the other vector</param>
/// <returns>the angle in radians in the range [0,PI]</returns>
public float Angle(Vector4f v1)
{
double vDot = this.Dot(v1) / (this.Length() * v1.Length());
if (vDot < -1.0)
{
vDot = -1.0;
}
if (vDot > 1.0)
{
vDot = 1.0;
}
return ((float)(Math.Acos(vDot)));
}
/// <summary>
/// Copies the matrix values in the specified column into the vector
/// parameter.
/// </summary>
/// <remarks>
/// Copies the matrix values in the specified column into the vector
/// parameter.
/// </remarks>
/// <param name="column">the matrix column</param>
/// <param name="v">the vector into which the matrix row values will be copied</param>
public void GetColumn(int column, Vector4f v)
{
if (column == 0)
{
v.x = m00;
v.y = m10;
v.z = m20;
v.w = m30;
}
else
{
if (column == 1)
{
v.x = m01;
v.y = m11;
v.z = m21;
v.w = m31;
}
else
{
if (column == 2)
{
v.x = m02;
v.y = m12;
v.z = m22;
v.w = m32;
}
else
{
if (column == 3)
{
v.x = m03;
v.y = m13;
v.z = m23;
v.w = m33;
}
else
{
throw new IndexOutOfRangeException("Matrix4f getColumn");
}
}
}
}
}
/// <summary>Sets the specified row of this matrix4f to the Vector provided.</summary>
/// <remarks>Sets the specified row of this matrix4f to the Vector provided.</remarks>
/// <param name="row">the row number to be modified (zero indexed)</param>
/// <param name="v">the replacement row</param>
public void SetRow(int row, Vector4f v)
{
switch (row)
{
case 0:
{
this.m00 = v.x;
this.m01 = v.y;
this.m02 = v.z;
this.m03 = v.w;
break;
}
case 1:
{
this.m10 = v.x;
this.m11 = v.y;
this.m12 = v.z;
this.m13 = v.w;
break;
}
case 2:
{
this.m20 = v.x;
this.m21 = v.y;
this.m22 = v.z;
this.m23 = v.w;
break;
}
case 3:
{
this.m30 = v.x;
this.m31 = v.y;
this.m32 = v.z;
this.m33 = v.w;
break;
}
default:
{
throw new IndexOutOfRangeException("Matrix4f setRow");
}
}
}
/// <summary>Copies the matrix values in the specified row into the vector parameter.
/// </summary>
/// <remarks>Copies the matrix values in the specified row into the vector parameter.
/// </remarks>
/// <param name="row">the matrix row</param>
/// <param name="v">the vector into which the matrix row values will be copied</param>
public void GetRow(int row, Vector4f v)
{
if (row == 0)
{
v.x = m00;
v.y = m01;
v.z = m02;
v.w = m03;
}
else
{
if (row == 1)
{
v.x = m10;
v.y = m11;
v.z = m12;
v.w = m13;
}
else
{
if (row == 2)
{
v.x = m20;
v.y = m21;
v.z = m22;
v.w = m23;
}
else
{
if (row == 3)
{
v.x = m30;
v.y = m31;
v.z = m32;
v.w = m33;
}
else
{
throw new IndexOutOfRangeException("Matrix4f getRow");
}
}
}
}
}