Package javax.vecmath

Class Matrix3f

java.lang.Object
javax.vecmath.Matrix3f
All Implemented Interfaces:
Serializable, Cloneable

public class Matrix3f extends Object implements Serializable, Cloneable
A single precision floating point 3 by 3 matrix. Primarily to support 3D rotations.
See Also:
  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    float
    The first matrix element in the first row.
    float
    The second matrix element in the first row.
    float
    The third matrix element in the first row.
    float
    The first matrix element in the second row.
    float
    The second matrix element in the second row.
    float
    The third matrix element in the second row.
    float
    The first matrix element in the third row.
    float
    The second matrix element in the third row.
    float
    The third matrix element in the third row.
  • Constructor Summary

    Constructors
    Constructor
    Description
    Constructs and initializes a Matrix3f to all zeros.
    Matrix3f(float[] v)
    Constructs and initializes a Matrix3f from the specified nine-element array.
    Matrix3f(float m00, float m01, float m02, float m10, float m11, float m12, float m20, float m21, float m22)
    Constructs and initializes a Matrix3f from the specified nine values.
    Constructs a new matrix with the same values as the Matrix3d parameter.
    Constructs a new matrix with the same values as the Matrix3f parameter.
  • Method Summary

    Modifier and Type
    Method
    Description
    final void
    add(float scalar)
    Adds a scalar to each component of this matrix.
    final void
    add(float scalar, Matrix3f m1)
    Adds a scalar to each component of the matrix m1 and places the result into this.
    final void
    Sets the value of this matrix to the matrix sum of itself and matrix m1.
    final void
    Sets the value of this matrix to the matrix sum of matrices m1 and m2.
    Creates a new object of the same class as this object.
    final float
    Computes the determinant of this matrix.
    boolean
    epsilonEquals(Matrix3f m1, float epsilon)
    Returns true if the L-infinite distance between this matrix and matrix m1 is less than or equal to the epsilon parameter, otherwise returns false.
    boolean
    Returns true if the Object o1 is of type Matrix3f and all of the data members of o1 are equal to the corresponding data members in this Matrix3f.
    boolean
    Returns true if all of the data members of Matrix3f m1 are equal to the corresponding data members in this Matrix3f.
    final void
    getColumn(int column, float[] v)
    Copies the matrix values in the specified column into the array parameter.
    final void
    getColumn(int column, Vector3f v)
    Copies the matrix values in the specified column into the vector parameter.
    final float
    getElement(int row, int column)
    Retrieves the value at the specified row and column of this matrix.
    final float
    Get the first matrix element in the first row.
    final float
    Get the second matrix element in the first row.
    final float
    Get the third matrix element in the first row.
    final float
    Get first matrix element in the second row.
    final float
    Get second matrix element in the second row.
    final float
    Get the third matrix element in the second row.
    final float
    Get the first matrix element in the third row.
    final float
    Get the second matrix element in the third row.
    final float
    Get the third matrix element in the third row .
    final void
    getRow(int row, float[] v)
    Copies the matrix values in the specified row into the array parameter.
    final void
    getRow(int row, Vector3f v)
    Copies the matrix values in the specified row into the vector parameter.
    final float
    Performs an SVD normalization of this matrix to calculate and return the uniform scale factor.
    int
    Returns a hash code value based on the data values in this object.
    final void
    Inverts this matrix in place.
    final void
    Sets the value of this matrix to the matrix inverse of the passed matrix m1.
    final void
    mul(float scalar)
    Multiplies each element of this matrix by a scalar.
    final void
    mul(float scalar, Matrix3f m1)
    Multiplies each element of matrix m1 by a scalar and places the result into this.
    final void
    Sets the value of this matrix to the result of multiplying itself with matrix m1.
    final void
    Sets the value of this matrix to the result of multiplying the two argument matrices together.
    final void
    Multiplies this matrix by matrix m1, does an SVD normalization of the result, and places the result back into this matrix.
    final void
    Multiplies matrix m1 by matrix m2, does an SVD normalization of the result, and places the result into this matrix.
    final void
    Multiplies the transpose of matrix m1 times the transpose of matrix m2, and places the result into this.
    final void
    Multiplies the transpose of matrix m1 times matrix m2, and places the result into this.
    final void
    Multiplies matrix m1 times the transpose of matrix m2, and places the result into this.
    final void
    Negates the value of this matrix: this = -this.
    final void
    Sets the value of this matrix equal to the negation of of the Matrix3f parameter.
    final void
    Performs singular value decomposition normalization of this matrix.
    final void
    Perform singular value decomposition normalization of matrix m1 and place the normalized values into this.
    final void
    Perform cross product normalization of this matrix.
    final void
    Perform cross product normalization of matrix m1 and place the normalized values into this.
    final void
    rotX(float angle)
    Sets the value of this matrix to a counter clockwise rotation about the x axis.
    final void
    rotY(float angle)
    Sets the value of this matrix to a counter clockwise rotation about the y axis.
    final void
    rotZ(float angle)
    Sets the value of this matrix to a counter clockwise rotation about the z axis.
    final void
    set(float scale)
    Sets the value of this matrix to a scale matrix with the passed scale amount.
    final void
    set(float[] m)
    Sets the values in this Matrix3f equal to the row-major array parameter (ie, the first three elements of the array will be copied into the first row of this matrix, etc.).
    final void
    Sets the value of this matrix to the matrix conversion of the (double precision) axis and angle argument.
    final void
    Sets the value of this matrix to the matrix conversion of the (single precision) axis and angle argument.
    final void
    Sets the value of this matrix to the float value of the Matrix3d argument.
    final void
    Sets the value of this matrix to the value of the Matrix3f argument.
    final void
    set(Quat4d q1)
    Sets the value of this matrix to the matrix conversion of the (single precision) quaternion argument.
    final void
    set(Quat4f q1)
    Sets the value of this matrix to the matrix conversion of the (single precision) quaternion argument.
    final void
    setColumn(int column, float[] v)
    Sets the specified column of this matrix3f to the three values provided.
    final void
    setColumn(int column, float x, float y, float z)
    Sets the specified column of this matrix3f to the three values provided.
    final void
    setColumn(int column, Vector3f v)
    Sets the specified column of this matrix3f to the vector provided.
    final void
    setElement(int row, int column, float value)
    Sets the specified element of this matrix3f to the value provided.
    final void
    Sets this Matrix3f to identity.
    final void
    setM00(float m00)
    Set the first matrix element in the first row.
    final void
    setM01(float m01)
    Set the second matrix element in the first row.
    final void
    setM02(float m02)
    Set the third matrix element in the first row.
    final void
    setM10(float m10)
    Set first matrix element in the second row.
    final void
    setM11(float m11)
    Set the second matrix element in the second row.
    final void
    setM12(float m12)
    Set the third matrix element in the second row.
    final void
    setM20(float m20)
    Set the first matrix element in the third row.
    final void
    setM21(float m21)
    Set the second matrix element in the third row.
    final void
    setM22(float m22)
    Set the third matrix element in the third row.
    final void
    setRow(int row, float[] v)
    Sets the specified row of this matrix3f to the three values provided.
    final void
    setRow(int row, float x, float y, float z)
    Sets the specified row of this matrix3f to the three values provided.
    final void
    setRow(int row, Vector3f v)
    Sets the specified row of this matrix3f to the Vector provided.
    final void
    setScale(float scale)
    Sets the scale component of the current matrix by factoring out the current scale (by doing an SVD) and multiplying by the new scale.
    final void
    Sets this matrix to all zeros.
    final void
    Sets the value of this matrix to the matrix difference of itself and matrix m1 (this = this - m1).
    final void
    Sets the value of this matrix to the matrix difference of matrices m1 and m2.
    Returns a string that contains the values of this Matrix3f.
    final void
    Multiply this matrix by the tuple t and place the result back into the tuple (t = this*t).
    final void
    Multiply this matrix by the tuple t and and place the result into the tuple "result" (result = this*t).
    final void
    Sets the value of this matrix to its transpose.
    final void
    Sets the value of this matrix to the transpose of the argument matrix.

    Methods inherited from class java.lang.Object

    finalize, getClass, notify, notifyAll, wait, wait, wait
  • Field Details

    • m00

      public float m00
      The first matrix element in the first row.
    • m01

      public float m01
      The second matrix element in the first row.
    • m02

      public float m02
      The third matrix element in the first row.
    • m10

      public float m10
      The first matrix element in the second row.
    • m11

      public float m11
      The second matrix element in the second row.
    • m12

      public float m12
      The third matrix element in the second row.
    • m20

      public float m20
      The first matrix element in the third row.
    • m21

      public float m21
      The second matrix element in the third row.
    • m22

      public float m22
      The third matrix element in the third row.
  • Constructor Details

    • Matrix3f

      public Matrix3f(float m00, float m01, float m02, float m10, float m11, float m12, float m20, float m21, float m22)
      Constructs and initializes a Matrix3f from the specified nine values.
      Parameters:
      m00 - the [0][0] element
      m01 - the [0][1] element
      m02 - the [0][2] element
      m10 - the [1][0] element
      m11 - the [1][1] element
      m12 - the [1][2] element
      m20 - the [2][0] element
      m21 - the [2][1] element
      m22 - the [2][2] element
    • Matrix3f

      public Matrix3f(float[] v)
      Constructs and initializes a Matrix3f from the specified nine-element array. this.m00 =v[0], this.m01=v[1], etc.
      Parameters:
      v - the array of length 9 containing in order
    • Matrix3f

      public Matrix3f(Matrix3d m1)
      Constructs a new matrix with the same values as the Matrix3d parameter.
      Parameters:
      m1 - the source matrix
    • Matrix3f

      public Matrix3f(Matrix3f m1)
      Constructs a new matrix with the same values as the Matrix3f parameter.
      Parameters:
      m1 - the source matrix
    • Matrix3f

      public Matrix3f()
      Constructs and initializes a Matrix3f to all zeros.
  • Method Details

    • toString

      public String toString()
      Returns a string that contains the values of this Matrix3f.
      Overrides:
      toString in class Object
      Returns:
      the String representation
    • setIdentity

      public final void setIdentity()
      Sets this Matrix3f to identity.
    • setScale

      public final void setScale(float scale)
      Sets the scale component of the current matrix by factoring out the current scale (by doing an SVD) and multiplying by the new scale.
      Parameters:
      scale - the new scale amount
    • setElement

      public final void setElement(int row, int column, float value)
      Sets the specified element of this matrix3f to the value provided.
      Parameters:
      row - the row number to be modified (zero indexed)
      column - the column number to be modified (zero indexed)
      value - the new value
    • getRow

      public final void getRow(int row, Vector3f v)
      Copies the matrix values in the specified row into the vector parameter.
      Parameters:
      row - the matrix row
      v - the vector into which the matrix row values will be copied
    • getRow

      public final void getRow(int row, float[] v)
      Copies the matrix values in the specified row into the array parameter.
      Parameters:
      row - the matrix row
      v - the array into which the matrix row values will be copied
    • getColumn

      public final void getColumn(int column, Vector3f v)
      Copies the matrix values in the specified column into the vector parameter.
      Parameters:
      column - the matrix column
      v - the vector into which the matrix row values will be copied
    • getColumn

      public final void getColumn(int column, float[] v)
      Copies the matrix values in the specified column into the array parameter.
      Parameters:
      column - the matrix column
      v - the array into which the matrix row values will be copied
    • getElement

      public final float getElement(int row, int column)
      Retrieves the value at the specified row and column of this matrix.
      Parameters:
      row - the row number to be retrieved (zero indexed)
      column - the column number to be retrieved (zero indexed)
      Returns:
      the value at the indexed element.
    • setRow

      public final void setRow(int row, float x, float y, float z)
      Sets the specified row of this matrix3f to the three values provided.
      Parameters:
      row - the row number to be modified (zero indexed)
      x - the first column element
      y - the second column element
      z - the third column element
    • setRow

      public final void setRow(int row, Vector3f v)
      Sets the specified row of this matrix3f to the Vector provided.
      Parameters:
      row - the row number to be modified (zero indexed)
      v - the replacement row
    • setRow

      public final void setRow(int row, float[] v)
      Sets the specified row of this matrix3f to the three values provided.
      Parameters:
      row - the row number to be modified (zero indexed)
      v - the replacement row
    • setColumn

      public final void setColumn(int column, float x, float y, float z)
      Sets the specified column of this matrix3f to the three values provided.
      Parameters:
      column - the column number to be modified (zero indexed)
      x - the first row element
      y - the second row element
      z - the third row element
    • setColumn

      public final void setColumn(int column, Vector3f v)
      Sets the specified column of this matrix3f to the vector provided.
      Parameters:
      column - the column number to be modified (zero indexed)
      v - the replacement column
    • setColumn

      public final void setColumn(int column, float[] v)
      Sets the specified column of this matrix3f to the three values provided.
      Parameters:
      column - the column number to be modified (zero indexed)
      v - the replacement column
    • getScale

      public final float getScale()
      Performs an SVD normalization of this matrix to calculate and return the uniform scale factor. If the matrix has non-uniform scale factors, the largest of the x, y, and z scale factors will be returned. This matrix is not modified.
      Returns:
      the scale factor of this matrix
    • add

      public final void add(float scalar)
      Adds a scalar to each component of this matrix.
      Parameters:
      scalar - the scalar adder
    • add

      public final void add(float scalar, Matrix3f m1)
      Adds a scalar to each component of the matrix m1 and places the result into this. Matrix m1 is not modified.
      Parameters:
      scalar - the scalar adder.
      m1 - the original matrix values
    • add

      public final void add(Matrix3f m1, Matrix3f m2)
      Sets the value of this matrix to the matrix sum of matrices m1 and m2.
      Parameters:
      m1 - the first matrix
      m2 - the second matrix
    • add

      public final void add(Matrix3f m1)
      Sets the value of this matrix to the matrix sum of itself and matrix m1.
      Parameters:
      m1 - the other matrix
    • sub

      public final void sub(Matrix3f m1, Matrix3f m2)
      Sets the value of this matrix to the matrix difference of matrices m1 and m2.
      Parameters:
      m1 - the first matrix
      m2 - the second matrix
    • sub

      public final void sub(Matrix3f m1)
      Sets the value of this matrix to the matrix difference of itself and matrix m1 (this = this - m1).
      Parameters:
      m1 - the other matrix
    • transpose

      public final void transpose()
      Sets the value of this matrix to its transpose.
    • transpose

      public final void transpose(Matrix3f m1)
      Sets the value of this matrix to the transpose of the argument matrix.
      Parameters:
      m1 - the matrix to be transposed
    • set

      public final void set(Quat4f q1)
      Sets the value of this matrix to the matrix conversion of the (single precision) quaternion argument.
      Parameters:
      q1 - the quaternion to be converted
    • set

      public final void set(AxisAngle4f a1)
      Sets the value of this matrix to the matrix conversion of the (single precision) axis and angle argument.
      Parameters:
      a1 - the axis and angle to be converted
    • set

      public final void set(AxisAngle4d a1)
      Sets the value of this matrix to the matrix conversion of the (double precision) axis and angle argument.
      Parameters:
      a1 - the axis and angle to be converted
    • set

      public final void set(Quat4d q1)
      Sets the value of this matrix to the matrix conversion of the (single precision) quaternion argument.
      Parameters:
      q1 - the quaternion to be converted
    • set

      public final void set(float[] m)
      Sets the values in this Matrix3f equal to the row-major array parameter (ie, the first three elements of the array will be copied into the first row of this matrix, etc.).
      Parameters:
      m - the single precision array of length 9
    • set

      public final void set(Matrix3f m1)
      Sets the value of this matrix to the value of the Matrix3f argument.
      Parameters:
      m1 - the source matrix3f
    • set

      public final void set(Matrix3d m1)
      Sets the value of this matrix to the float value of the Matrix3d argument.
      Parameters:
      m1 - the source matrix3d
    • invert

      public final void invert(Matrix3f m1)
      Sets the value of this matrix to the matrix inverse of the passed matrix m1.
      Parameters:
      m1 - the matrix to be inverted
    • invert

      public final void invert()
      Inverts this matrix in place.
    • determinant

      public final float determinant()
      Computes the determinant of this matrix.
      Returns:
      the determinant of this matrix
    • set

      public final void set(float scale)
      Sets the value of this matrix to a scale matrix with the passed scale amount.
      Parameters:
      scale - the scale factor for the matrix
    • rotX

      public final void rotX(float angle)
      Sets the value of this matrix to a counter clockwise rotation about the x axis.
      Parameters:
      angle - the angle to rotate about the X axis in radians
    • rotY

      public final void rotY(float angle)
      Sets the value of this matrix to a counter clockwise rotation about the y axis.
      Parameters:
      angle - the angle to rotate about the Y axis in radians
    • rotZ

      public final void rotZ(float angle)
      Sets the value of this matrix to a counter clockwise rotation about the z axis.
      Parameters:
      angle - the angle to rotate about the Z axis in radians
    • mul

      public final void mul(float scalar)
      Multiplies each element of this matrix by a scalar.
      Parameters:
      scalar - the scalar multiplier
    • mul

      public final void mul(float scalar, Matrix3f m1)
      Multiplies each element of matrix m1 by a scalar and places the result into this. Matrix m1 is not modified.
      Parameters:
      scalar - the scalar multiplier
      m1 - the original matrix
    • mul

      public final void mul(Matrix3f m1)
      Sets the value of this matrix to the result of multiplying itself with matrix m1.
      Parameters:
      m1 - the other matrix
    • mul

      public final void mul(Matrix3f m1, Matrix3f m2)
      Sets the value of this matrix to the result of multiplying the two argument matrices together.
      Parameters:
      m1 - the first matrix
      m2 - the second matrix
    • mulNormalize

      public final void mulNormalize(Matrix3f m1)
      Multiplies this matrix by matrix m1, does an SVD normalization of the result, and places the result back into this matrix. this = SVDnorm(this*m1).
      Parameters:
      m1 - the matrix on the right hand side of the multiplication
    • mulNormalize

      public final void mulNormalize(Matrix3f m1, Matrix3f m2)
      Multiplies matrix m1 by matrix m2, does an SVD normalization of the result, and places the result into this matrix. this = SVDnorm(m1*m2).
      Parameters:
      m1 - the matrix on the left hand side of the multiplication
      m2 - the matrix on the right hand side of the multiplication
    • mulTransposeBoth

      public final void mulTransposeBoth(Matrix3f m1, Matrix3f m2)
      Multiplies the transpose of matrix m1 times the transpose of matrix m2, and places the result into this.
      Parameters:
      m1 - the matrix on the left hand side of the multiplication
      m2 - the matrix on the right hand side of the multiplication
    • mulTransposeRight

      public final void mulTransposeRight(Matrix3f m1, Matrix3f m2)
      Multiplies matrix m1 times the transpose of matrix m2, and places the result into this.
      Parameters:
      m1 - the matrix on the left hand side of the multiplication
      m2 - the matrix on the right hand side of the multiplication
    • mulTransposeLeft

      public final void mulTransposeLeft(Matrix3f m1, Matrix3f m2)
      Multiplies the transpose of matrix m1 times matrix m2, and places the result into this.
      Parameters:
      m1 - the matrix on the left hand side of the multiplication
      m2 - the matrix on the right hand side of the multiplication
    • normalize

      public final void normalize()
      Performs singular value decomposition normalization of this matrix.
    • normalize

      public final void normalize(Matrix3f m1)
      Perform singular value decomposition normalization of matrix m1 and place the normalized values into this.
      Parameters:
      m1 - the matrix values to be normalized
    • normalizeCP

      public final void normalizeCP()
      Perform cross product normalization of this matrix.
    • normalizeCP

      public final void normalizeCP(Matrix3f m1)
      Perform cross product normalization of matrix m1 and place the normalized values into this.
      Parameters:
      m1 - Provides the matrix values to be normalized
    • equals

      public boolean equals(Matrix3f m1)
      Returns true if all of the data members of Matrix3f m1 are equal to the corresponding data members in this Matrix3f.
      Parameters:
      m1 - the matrix with which the comparison is made
      Returns:
      true or false
    • equals

      public boolean equals(Object o1)
      Returns true if the Object o1 is of type Matrix3f and all of the data members of o1 are equal to the corresponding data members in this Matrix3f.
      Overrides:
      equals in class Object
      Parameters:
      o1 - the object with which the comparison is made
      Returns:
      true or false
    • epsilonEquals

      public boolean epsilonEquals(Matrix3f m1, float epsilon)
      Returns true if the L-infinite distance between this matrix and matrix m1 is less than or equal to the epsilon parameter, otherwise returns false. The L-infinite distance is equal to MAX[i=0,1,2 ; j=0,1,2 ; abs(this.m(i,j) - m1.m(i,j)]
      Parameters:
      m1 - the matrix to be compared to this matrix
      epsilon - the threshold value
    • hashCode

      public int hashCode()
      Returns a hash code value based on the data values in this object. Two different Matrix3f objects with identical data values (i.e., Matrix3f.equals returns true) will return the same hash code value. Two objects with different data members may return the same hash value, although this is not likely.
      Overrides:
      hashCode in class Object
      Returns:
      the integer hash code value
    • setZero

      public final void setZero()
      Sets this matrix to all zeros.
    • negate

      public final void negate()
      Negates the value of this matrix: this = -this.
    • negate

      public final void negate(Matrix3f m1)
      Sets the value of this matrix equal to the negation of of the Matrix3f parameter.
      Parameters:
      m1 - the source matrix
    • transform

      public final void transform(Tuple3f t)
      Multiply this matrix by the tuple t and place the result back into the tuple (t = this*t).
      Parameters:
      t - the tuple to be multiplied by this matrix and then replaced
    • transform

      public final void transform(Tuple3f t, Tuple3f result)
      Multiply this matrix by the tuple t and and place the result into the tuple "result" (result = this*t).
      Parameters:
      t - the tuple to be multiplied by this matrix
      result - the tuple into which the product is placed
    • clone

      public Object clone()
      Creates a new object of the same class as this object.
      Overrides:
      clone in class Object
      Returns:
      a clone of this instance.
      Throws:
      OutOfMemoryError - if there is not enough memory.
      Since:
      vecmath 1.3
      See Also:
    • getM00

      public final float getM00()
      Get the first matrix element in the first row.
      Returns:
      Returns the m00.
      Since:
      vecmath 1.5
    • setM00

      public final void setM00(float m00)
      Set the first matrix element in the first row.
      Parameters:
      m00 - The m00 to set.
      Since:
      vecmath 1.5
    • getM01

      public final float getM01()
      Get the second matrix element in the first row.
      Returns:
      Returns the m01.
      Since:
      vecmath 1.5
    • setM01

      public final void setM01(float m01)
      Set the second matrix element in the first row.
      Parameters:
      m01 - The m01 to set.
      Since:
      vecmath 1.5
    • getM02

      public final float getM02()
      Get the third matrix element in the first row.
      Returns:
      Returns the m02.
      Since:
      vecmath 1.5
    • setM02

      public final void setM02(float m02)
      Set the third matrix element in the first row.
      Parameters:
      m02 - The m02 to set.
      Since:
      vecmath 1.5
    • getM10

      public final float getM10()
      Get first matrix element in the second row.
      Returns:
      Returns the m10.
      Since:
      vecmath 1.5
    • setM10

      public final void setM10(float m10)
      Set first matrix element in the second row.
      Parameters:
      m10 - The m10 to set.
      Since:
      vecmath 1.5
    • getM11

      public final float getM11()
      Get second matrix element in the second row.
      Returns:
      Returns the m11.
      Since:
      vecmath 1.5
    • setM11

      public final void setM11(float m11)
      Set the second matrix element in the second row.
      Parameters:
      m11 - The m11 to set.
      Since:
      vecmath 1.5
    • getM12

      public final float getM12()
      Get the third matrix element in the second row.
      Returns:
      Returns the m12.
      Since:
      vecmath 1.5
    • setM12

      public final void setM12(float m12)
      Set the third matrix element in the second row.
      Parameters:
      m12 - The m12 to set.
      Since:
      vecmath 1.5
    • getM20

      public final float getM20()
      Get the first matrix element in the third row.
      Returns:
      Returns the m20.
      Since:
      vecmath 1.5
    • setM20

      public final void setM20(float m20)
      Set the first matrix element in the third row.
      Parameters:
      m20 - The m20 to set.
      Since:
      vecmath 1.5
    • getM21

      public final float getM21()
      Get the second matrix element in the third row.
      Returns:
      Returns the m21.
      Since:
      vecmath 1.5
    • setM21

      public final void setM21(float m21)
      Set the second matrix element in the third row.
      Parameters:
      m21 - The m21 to set.
      Since:
      vecmath 1.5
    • getM22

      public final float getM22()
      Get the third matrix element in the third row .
      Returns:
      Returns the m22.
      Since:
      vecmath 1.5
    • setM22

      public final void setM22(float m22)
      Set the third matrix element in the third row.
      Parameters:
      m22 - The m22 to set.
      Since:
      vecmath 1.5