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ARGB  A utility for storing, accessing and converting colors in an ARGB
(alpha, red, green, blue) color format. 
BGRA  A utility for storing, accessing and converting colors in a BGRA
(blue, green, red, alpha) color format. 
CairoMatrix3  An object with the same data as a Matrix3 , in Cairo's expected format. 
ColorMatrix  ColorMatrix is a 4x5 matrix containing color multiplication
and offset values for tinting and other kinds of color
manipulation. In addition to using the multiplier, offset and
color properties, it can be edited directly as a Float32Array

Matrix3  Matrix3 is a 3x3 transformation matrix particularly useful for
twodimensional transformation. It can be used for rotation, scale
and skewing of a twodimensional object.

Matrix4  Matrix4 is a 4x4 matrix, useful for 3D calculations

RGBA  A utility for storing, accessing and converting colors in an RGBA
(red, green, blue, alpha) color format. 
Rectangle  The Rectangle class provides a simple object for storing
and manipulating a logical rectangle for calculations 
Vector2  The Vector2 class can be used for calculating math with
basic (x, y) coordinates 
Vector4  Vector4 is a vector suitable for threedimensional
math, containing (x, y, z, w) components
