Function Namespace Matrix

Defined in: matrix.js.

Function Namespace Summary
Constructor Attributes	Constructor Name and Description
	Matrix() A matrix math library.

Field Summary
Field Attributes	Field Name and Description
<static>	Matrix.IDENTITY The identity matrix
<static>	Matrix.R90 A ready to use matrix to make a 90 degree rotation.

Method Summary
Method Attributes	Method Name and Description
<static>	Matrix.add(m1, m2) Add two matrixes.
<static>	Matrix.clone(m) Clones a matrix.
<static>	Matrix.equals(m1, m2) Compares two matrixes
<static>	Matrix.multiply(m1, m2) Multiply matrix m2 with m1
<static>	Matrix.rotationMatrix(angle) Creates a clockwise rotation matrix around the origin.
<static>	Matrix.scaleMatrix(sx, sy) Creates a scale matrix
<static>	Matrix.subtract(m1, m2) Substract matrix m2 from m1
<static>	Matrix.translationMatrix(dx, dy) Creates a translation matrix

Function Namespace Detail

Matrix()

A matrix math library. Instead of creating of a so called Object we will only use matrixes as array or arrays so Matrix will function more like a namespace instead as an object. All function are "static" / class methods...so no need to instanciate a Matrix object

Field Detail

<static> Matrix.IDENTITY

The identity matrix

<static> Matrix.R90

A ready to use matrix to make a 90 degree rotation. It acts like a singleton. It's more used for example and testings

Method Detail

<static> {Array} Matrix.add(m1, m2)

Add two matrixes. It can be used to combine multiple transformations into one.

Parameters:
{Array} m1: - first matrix
{Array} m2: - second matrix

Returns:: {Array} the sum of those 2 matrix

See:: http://en.wikipedia.org/wiki/Transformation_matrix#Composing_and_inverting_transformations>

<static> {Array} Matrix.clone(m)

Clones a matrix. Recursivelly
Author: Alex Gheorghiu .

Parameters:
{Array} m: - the matrix to clone

Returns:: {Array} - the clone of orriginal matrix

<static> {Boolean} Matrix.equals(m1, m2)

Compares two matrixes

Parameters:
{Array} m1: - first matrix
{Array} m2: - second matrix

Returns:: {Boolean} true if matrixes are equal , false otherwise

<static> {Array} Matrix.multiply(m1, m2)

Multiply matrix m2 with m1

Parameters:
{Array} m1: - first matrix
{Array} m2: - second matrix

Returns:: {Array} the multiplication of those 2 matrix

See:: http://en.wikipedia.org/wiki/Matrix_multiplication

<static> {Array} Matrix.rotationMatrix(angle)

Creates a clockwise rotation matrix around the origin. Note: don't use this to rotate a Figure. You must first move it to origin. (by using a translation)

Parameters:
{Number} angle: - the angle expressed in radians

Returns:: {Array} - the ready to use rotation matrix

See:: http://en.wikipedia.org/wiki/Rotation_matrix#In_an_oriented_plane; http://en.wikipedia.org/wiki/Rotation_matrix; http://en.wikipedia.org/wiki/Transformation_matrix#Rotation

<static> {Array} Matrix.scaleMatrix(sx, sy)

Creates a scale matrix

Parameters:
{Number} sx: - scale factor by which the x will be multiply
{Number} sy: - scale factor by which the y will be multiply

Returns:: {Array} - the ready to use scale matrix

See:: http://en.wikipedia.org/wiki/Transformation_matrix#Scaling

<static> {Array} Matrix.subtract(m1, m2)

Substract matrix m2 from m1

Parameters:
{Array} m1: - first matrix
{Array} m2: - second matrix

Returns:: {Array} the m1 - m2 matrix

<static> {Array} Matrix.translationMatrix(dx, dy)

Creates a translation matrix

Parameters:
{Number} dx: - variation of movement on [Ox axis
{Number} dy: - variation of movement on [Oy axis

Returns:: {Array} - the ready to use translation matrix

Classes

Function Namespace Matrix