/// <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>
/// <param name="v1"> the other vector
/// </param>
/// <returns> the angle in radians in the range [0,PI]
/// </returns>
public double angle(Vector4d v1)
{
// zero div may occur.
double d = dot(v1);
double v1_length = v1.length();
double v_length = length();
// numerically, domain error may occur
return (double) System.Math.Acos(d / v1_length / v_length);
}
/// <summary> Constructs and initializes a Vector4d from the specified Vector4d.</summary>
/// <param name="v1">the Vector4d containing the initialization x y z w data
/// </param>
public Vector4d(Vector4d v1):base(v1)
{
}
/// <summary> Computes the dot product of the this vector and vector v1.</summary>
/// <param name="v1">the other vector
/// </param>
/// <returns> the dot product of this vector and vector v1
/// </returns>
public double dot(Vector4d v1)
{
return x * v1.x + y * v1.y + z * v1.z + w * v1.w;
}
/// <summary> Sets the value of this vector to the normalization of vector v1.</summary>
/// <param name="v1">the un-normalized vector
/// </param>
public void normalize(Vector4d v1)
{
set_Renamed(v1);
normalize();
}
/// <summary> Sets the specified column of this matrix4d to the vector provided.</summary>
/// <param name="column">the column number to be modified (zero indexed)
/// </param>
/// <param name="v">the replacement column
/// </param>
public void setColumn(int column, Vector4d v)
{
if (column == 0)
{
m00 = v.x;
m10 = v.y;
m20 = v.z;
m30 = v.w;
}
else if (column == 1)
{
m01 = v.x;
m11 = v.y;
m21 = v.z;
m31 = v.w;
}
else if (column == 2)
{
m02 = v.x;
m12 = v.y;
m22 = v.z;
m32 = v.w;
}
else if (column == 3)
{
m03 = v.x;
m13 = v.y;
m23 = v.z;
m33 = v.w;
}
else
{
throw new System.IndexOutOfRangeException("column must be 0 to 3 and is " + column);
}
}
/// <summary> Copies the matrix values in the specified column into the
/// vector parameter.
/// </summary>
/// <param name="column">the matrix column
/// </param>
/// <param name="v">The vector into which the matrix column values will be copied
/// </param>
public void getColumn(int column, Vector4d 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 System.IndexOutOfRangeException("column must be 0 to 3 and is " + column);
}
}
/// <summary> Copies the matrix values in the specified row into the
/// vector parameter.
/// </summary>
/// <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, Vector4d 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 System.IndexOutOfRangeException("row must be 0 to 3 and is " + row);
}
}
/// <summary> Sets the specified row of this matrix4d to the Vector provided.</summary>
/// <param name="row">the row number to be modified (zero indexed)
/// </param>
/// <param name="v">the replacement row
/// </param>
public void setRow(int row, Vector4d v)
{
if (row == 0)
{
m00 = v.x;
m01 = v.y;
m02 = v.z;
m03 = v.w;
}
else if (row == 1)
{
m10 = v.x;
m11 = v.y;
m12 = v.z;
m13 = v.w;
}
else if (row == 2)
{
m20 = v.x;
m21 = v.y;
m22 = v.z;
m23 = v.w;
}
else if (row == 3)
{
m30 = v.x;
m31 = v.y;
m32 = v.z;
m33 = v.w;
}
else
{
throw new System.IndexOutOfRangeException("row must be 0 to 3 and is " + row);
}
}
/// <summary> Constructs and initializes a Vector4d from the specified Vector4d.</summary>
/// <param name="v1">the Vector4d containing the initialization x y z w data
/// </param>
public Vector4d(Vector4d v1) : base(v1)
{
}
/// <summary> Sets the value of this vector to the normalization of vector v1.</summary>
/// <param name="v1">the un-normalized vector
/// </param>
public void normalize(Vector4d v1)
{
set_Renamed(v1);
normalize();
}
/// <summary> Computes the dot product of the this vector and vector v1.</summary>
/// <param name="v1">the other vector
/// </param>
/// <returns> the dot product of this vector and vector v1
/// </returns>
public double dot(Vector4d v1)
{
return(x * v1.x + y * v1.y + z * v1.z + w * v1.w);
}
