Class matrix3D.Matrix3D 
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Class matrix3D.Matrix3D 

java.lang.Object
   |
   +----matrix3D.Matrix3D
public class Matrix3D
extends Object
A 4x4 matrix for doing 3D transforms.

Variable Index

o desc
A description of the matrix.
o m
The two dimensional array which contains the matrix elements.
o name
The matrix's name.
o purpose
A description of the matrix's purpose.

Constructor Index

o Matrix3D()
Construct a matrix initialized to the identity matrix.
o Matrix3D(String)
Construct a named matrix initialized to the identity matrix.
o Matrix3D(String, String)
Construct a named matrix with a purpose and initialize it to the identity matrix.
o Matrix3D(String, String, String)
Construct a named matrix with a description and purpose, and initialize it to the identity matrix.

Method Index

o cross(Matrix3D, int, Matrix3D, int)
Return the cross product of a matrix's row and another matrix's column.
o dot(Matrix3D)
Return the matrix dot product of this and another matrx.
o dot(Vector3D)
Return the vector dot product of this matrix and a vector.
o draw(Graphics)
Draw the matrix.
o getElement(int, int)
Return a string representation of the specified element.
o identity()
Set the matrix to the identity matrix.
o isIdentity()
Return true if the matrix is equal to the identity matrix, false otherwise.
o printString()
Print a string representation of this matrix.
o setElement(int, int, double)
o setEqual(Matrix3D)
Set this matrix's contents to the contents of another matrix.
o toString()
Return a string representation of this matrix.

Variables

o m 
  public double m[][]
The two dimensional array which contains the matrix elements. Elements are referenced by [row][col] and start at [0][0].
o desc 
  public String desc
A description of the matrix. More specific matrices will use this to give a text description of their contents, such as "Translate (dx = 23, dy = 15, dz = 45)".
o name 
  public String name
The matrix's name.
o purpose 
  public String purpose
A description of the matrix's purpose. More specific matrices will use this to give a description of their purpose, such as "translate window to origin".

Constructors

o Matrix3D 
  public Matrix3D()
Construct a matrix initialized to the identity matrix.
o Matrix3D 
  public Matrix3D(String nameIn)
Construct a named matrix initialized to the identity matrix.
o Matrix3D 
  public Matrix3D(String nameIn,
                  String purposeIn)
Construct a named matrix with a purpose and initialize it to the identity matrix.
o Matrix3D 
  public Matrix3D(String nameIn,
                  String purposeIn,
                  String descIn)
Construct a named matrix with a description and purpose, and initialize it to the identity matrix.

Methods

o cross 
  public double cross(Matrix3D m1,
                      int row,
                      Matrix3D m2,
                      int col)
Return the cross product of a matrix's row and another matrix's column.
Returns:
m1[row][*] CROSS m2[*][col]
o isIdentity 
  public boolean isIdentity()
Return true if the matrix is equal to the identity matrix, false otherwise.
o identity 
  public void identity()
Set the matrix to the identity matrix.
o dot 
  public Matrix3D dot(Matrix3D mIn)
Return the matrix dot product of this and another matrx.
Returns:
[this] DOT [mIn]
o dot 
  public Vector3D dot(Vector3D vIn)
Return the vector dot product of this matrix and a vector.
Returns:
[this] . [vIn]
o getElement 
  public String getElement(int row,
                           int col)
Return a string representation of the specified element.
o draw 
  public void draw(Graphics g)
Draw the matrix. Use drawString to draw the matrix contents into the specified graphics context.
o setElement 
  public void setElement(int row,
                         int col,
                         double d)
o setEqual 
  public void setEqual(Matrix3D mIn)
Set this matrix's contents to the contents of another matrix.
o toString 
  public String toString()
Return a string representation of this matrix.
Overrides:
toString in class Object
o printString 
  public void printString()
Print a string representation of this matrix. Print the matrix with each row as a seperate line. 
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