com.io7m.jtensors.core.parameterized.matrices

Class PMatrices2x2F

java.lang.Object

com.io7m.jtensors.core.parameterized.matrices.PMatrices2x2F

public final class PMatrices2x2F
extends Object

Functions over PMatrix2x2F values.

See "Mathematics for 3D Game Programming and Computer Graphics" 2nd Ed for the derivations of most of the code in this class (ISBN: 1-58450-277-0).

Since:

8.0.0

Method Summary

Modifier and Type	Method and Description
static <A,B,C,D,E,F> PMatrix2x2F<E,F>	add(PMatrix2x2F<A,B> m0, PMatrix2x2F<C,D> m1) Add the matrices m0 and m1.
static <A,B> Vector2F	column0(PMatrix2x2F<A,B> m)
static <A,B> Vector2F	column1(PMatrix2x2F<A,B> m)
static <A,B> double	determinant(PMatrix2x2F<A,B> m) Calculate the determinant of the matrix m.
static <A,B> PMatrix2x2F<A,B>	identity() The identity matrix.
static <A,B> Optional<PMatrix2x2F<B,A>>	invert(PMatrix2x2F<A,B> m) Calculate the inverse of the matrix m.
static <A,B,C> PMatrix2x2F<A,C>	multiply(PMatrix2x2F<B,C> m0, PMatrix2x2F<A,B> m1) Multiply the matrices m0 and m1.
static <A,B> PVector2F<B>	multiplyVectorPost(PMatrix2x2F<A,B> m, PVector2F<A> v) Multiply the vector v by the matrix m.
static Vector2F	multiplyVectorPost(PMatrix2x2F m, Vector2F v) Multiply the vector v by the matrix m.
static <A,B> PMatrix2x2F<A,B>	ofColumns(Vector2F c0, Vector2F c1) Construct a matrix from the column vectors (c0, c1).
static <A,B> PMatrix2x2F<A,B>	ofRows(Vector2F r0, Vector2F r1) Construct a matrix from the row vectors (r0, r1).
static <A,B> PMatrix2x2F<A,B>	ofScale(double x, double y) Construct a matrix that will scale by (x, y).
static <A,B> Vector2F	row0(PMatrix2x2F<A,B> m)
static <A,B> Vector2F	row1(PMatrix2x2F<A,B> m)
static <A,B,C,D> PMatrix2x2F<C,D>	scale(PMatrix2x2F<A,B> m, double r) Scale the matrix m by r.
static <A,B,C,D,E,F> PMatrix2x2F<E,F>	subtract(PMatrix2x2F<A,B> m0, PMatrix2x2F<C,D> m1) Subtract the matrices m0 and m1.
static <A,B> PMatrix2x2F<A,B>	toParameterized(Matrix2x2F m)
static <A,B> Matrix2x2F	toUnparameterized(PMatrix2x2F<A,B> m)
static <A,B> double	trace(PMatrix2x2F<A,B> m) Return the trace of the matrix m.
static <A,B> PMatrix2x2F<A,B>	transpose(PMatrix2x2F<A,B> m) Calculate the transpose of the matrix m.
static <A,B> PMatrix2x2F<A,B>	withColumn(PMatrix2x2F<A,B> m, int column, float r0, float r1) Set the column column of m to (r0, r1).
static <A,B> PMatrix2x2F<A,B>	withRow(PMatrix2x2F<A,B> m, int row, float c0, float c1) Set the row row of m to (c0, c1).
static <A,B> PMatrix2x2F<A,B>	zero() The zero matrix.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

add

public static <A,B,C,D,E,F> PMatrix2x2F<E,F> add(PMatrix2x2F<A,B> m0,
                                                 PMatrix2x2F<C,D> m1)

Add the matrices m0 and m1.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

C - A phantom type parameter (possibly representing a source coordinate system)

D - A phantom type parameter (possibly representing a target coordinate system)

E - A phantom type parameter (possibly representing a source coordinate system)

F - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m0 - The left matrix

m1 - The right matrix

Returns:

m0 + m1

determinant

public static <A,B> double determinant(PMatrix2x2F<A,B> m)

Calculate the determinant of the matrix m.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The matrix

Returns:

The determinant of m

invert

public static <A,B> Optional<PMatrix2x2F<B,A>> invert(PMatrix2x2F<A,B> m)

Calculate the inverse of the matrix m.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The matrix

Returns:

The inverse of m, or nothing if no inverse exists

multiply

public static <A,B,C> PMatrix2x2F<A,C> multiply(PMatrix2x2F<B,C> m0,
                                                PMatrix2x2F<A,B> m1)

Multiply the matrices m0 and m1.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

C - A phantom type parameter (possibly representing a source coordinate system)

Parameters:

m0 - The left matrix

m1 - The right matrix

Returns:

m0 * m1

multiplyVectorPost

public static <A,B> PVector2F<B> multiplyVectorPost(PMatrix2x2F<A,B> m,
                                                    PVector2F<A> v)

Multiply the vector v by the matrix m.

This is post multiplication.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The matrix

v - The vector

Returns:

m * v

multiplyVectorPost

public static Vector2F multiplyVectorPost(PMatrix2x2F m,
                                          Vector2F v)

Multiply the vector v by the matrix m.

This is post multiplication.

Parameters:

m - The matrix

v - The vector

Returns:

m * v

ofColumns

public static <A,B> PMatrix2x2F<A,B> ofColumns(Vector2F c0,
                                               Vector2F c1)

Construct a matrix from the column vectors (c0, c1).

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

c0 - The column 0

c1 - The column 1

Returns:

A constructed matrix

ofRows

public static <A,B> PMatrix2x2F<A,B> ofRows(Vector2F r0,
                                            Vector2F r1)

Construct a matrix from the row vectors (r0, r1).

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

r0 - The row 0

r1 - The row 1

Returns:

A constructed matrix

ofScale

public static <A,B> PMatrix2x2F<A,B> ofScale(double x,
                                             double y)

Construct a matrix that will scale by (x, y).

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

x - The X scaling value

y - The Y scaling value

Returns:

A constructed matrix

row0

public static <A,B> Vector2F row0(PMatrix2x2F<A,B> m)

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a source coordinate system)

Parameters:

m - The matrix

Returns:

Row 0 of the matrix

row1

public static <A,B> Vector2F row1(PMatrix2x2F<A,B> m)

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a source coordinate system)

Parameters:

m - The matrix

Returns:

Row 1 of the matrix

column0

public static <A,B> Vector2F column0(PMatrix2x2F<A,B> m)

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a source coordinate system)

Parameters:

m - The matrix

Returns:

Column 0 of the matrix

column1

public static <A,B> Vector2F column1(PMatrix2x2F<A,B> m)

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a source coordinate system)

Parameters:

m - The matrix

Returns:

Column 1 of the matrix

scale

public static <A,B,C,D> PMatrix2x2F<C,D> scale(PMatrix2x2F<A,B> m,
                                               double r)

Scale the matrix m by r.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

C - A phantom type parameter (possibly representing a source coordinate system)

D - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The matrix

r - The scale factor

Returns:

m * r

subtract

public static <A,B,C,D,E,F> PMatrix2x2F<E,F> subtract(PMatrix2x2F<A,B> m0,
                                                      PMatrix2x2F<C,D> m1)

Subtract the matrices m0 and m1.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

C - A phantom type parameter (possibly representing a source coordinate system)

D - A phantom type parameter (possibly representing a target coordinate system)

E - A phantom type parameter (possibly representing a source coordinate system)

F - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m0 - The left matrix

m1 - The right matrix

Returns:

m0 - m1

trace

public static <A,B> double trace(PMatrix2x2F<A,B> m)

Return the trace of the matrix m. The trace is defined as the sum of the diagonal elements of the matrix.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The matrix

Returns:

The trace of the matrix

transpose

public static <A,B> PMatrix2x2F<A,B> transpose(PMatrix2x2F<A,B> m)

Calculate the transpose of the matrix m.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The matrix

Returns:

The transpose of m

withColumn

public static <A,B> PMatrix2x2F<A,B> withColumn(PMatrix2x2F<A,B> m,
                                                int column,
                                                float r0,
                                                float r1)

Set the column column of m to (r0, r1).

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system) * @param r0 The value of row 0 in the column

Parameters:

m - The matrix

column - The column index in the range [0, 1]

r1 - The value of row 1 in the column

Returns:

A matrix with the given row

withRow

public static <A,B> PMatrix2x2F<A,B> withRow(PMatrix2x2F<A,B> m,
                                             int row,
                                             float c0,
                                             float c1)

Set the row row of m to (c0, c1).

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The matrix

row - The row index in the range [0, 1]

c0 - The value of column 0 in the row

c1 - The value of column 1 in the row

Returns:

A matrix with the given row

zero

public static <A,B> PMatrix2x2F<A,B> zero()

The zero matrix.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Returns:

A matrix with all zero components

identity

public static <A,B> PMatrix2x2F<A,B> identity()

The identity matrix.

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Returns:

A matrix with all diagonal components set to 1 and all other components set to 0.

toUnparameterized

public static <A,B> Matrix2x2F toUnparameterized(PMatrix2x2F<A,B> m)

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The input matrix

Returns:

A matrix equal to m but without type parameters

toParameterized

public static <A,B> PMatrix2x2F<A,B> toParameterized(Matrix2x2F m)

Type Parameters:

A - A phantom type parameter (possibly representing a source coordinate system)

B - A phantom type parameter (possibly representing a target coordinate system)

Parameters:

m - The input matrix

Returns:

A matrix equal to m with type parameters