Class goog.graphics.AffineTransform

Creates a 2D affine transform. An affine transform performs a linear mapping from 2D coordinates to other 2D coordinates that preserves the "straightness" and "parallelness" of lines. Such a coordinate transformation can be represented by a 3 row by 3 column matrix with an implied last row of [ 0 0 1 ]. This matrix transforms source coordinates (x,y) into destination coordinates (x',y') by considering them to be a column vector and multiplying the coordinate vector by the matrix according to the following process:

[ x']   [  m00  m01  m02  ] [ x ]   [ m00x + m01y + m02 ]
[ y'] = [  m10  m11  m12  ] [ y ] = [ m10x + m11y + m12 ]
[ 1 ]   [   0    0    1   ] [ 1 ]   [         1         ]

This class is optimized for speed and minimizes calculations based on its knowledge of the underlying matrix (as opposed to say simply performing matrix multiplication).

Instance Method Summary
	`clone() ⇒ !goog.graphics.AffineTransform`
	`concatenate(!goog.graphics.AffineTransform tx) ⇒ !goog.graphics.AffineTransform` Concatenates an affine transform to this transform.
	`copyFrom(!goog.graphics.AffineTransform tx) ⇒ !goog.graphics.AffineTransform` Sets this transform to be identical to the given transform.
	`createInverse() ⇒ !goog.graphics.AffineTransform`
	`equals(?goog.graphics.AffineTransform tx) ⇒ boolean` Compares two affine transforms for equality.
	`getDeterminant() ⇒ number`
	`getScaleX() ⇒ number`
	`getScaleY() ⇒ number`
	`getShearX() ⇒ number`
	`getShearY() ⇒ number`
	`getTranslateX() ⇒ number`
	`getTranslateY() ⇒ number`
	`isIdentity() ⇒ boolean`
	`isInvertible() ⇒ boolean` Returns whether the transform is invertible. A transform is not invertible if the determinant is 0 or any value is non-finite or NaN.
	`preConcatenate(!goog.graphics.AffineTransform tx) ⇒ !goog.graphics.AffineTransform` Pre-concatenates an affine transform to this transform.
	`preRotate(number theta, number x, number y) ⇒ !goog.graphics.AffineTransform` Pre-concatenates this transform with a rotation transformation around an anchor point.
	`preScale(number sx, number sy) ⇒ !goog.graphics.AffineTransform` Pre-concatenates this transform with a scaling transformation, i.e. calculates the following matrix product: [sx 0 0] [m00 m01 m02] [ 0 sy 0] [m10 m11 m12] [ 0 0 1] [ 0 0 1]
	`preShear(number shx, number shy) ⇒ !goog.graphics.AffineTransform` Pre-concatenates this transform with a shear transformation. i.e. calculates the following matrix product: [ 1 shx 0] [m00 m01 m02] [shy 1 0] [m10 m11 m12] [ 0 0 1] [ 0 0 1]
	`preTranslate(number dx, number dy) ⇒ !goog.graphics.AffineTransform` Pre-concatenates this transform with a translate transformation, i.e. calculates the following matrix product: [1 0 dx] [m00 m01 m02] [0 1 dy] [m10 m11 m12] [0 0 1] [ 0 0 1]
	`rotate(number theta, number x, number y) ⇒ !goog.graphics.AffineTransform` Concatenates this transform with a rotation transformation around an anchor point.
	`scale(number sx, number sy) ⇒ !goog.graphics.AffineTransform` Concatenates this transform with a scaling transformation.
	`setToRotation(number theta, number x, number y) ⇒ !goog.graphics.AffineTransform` Sets this transform to a rotation transformation.
	`setToScale(number sx, number sy) ⇒ !goog.graphics.AffineTransform` Sets this transform to a scaling transformation.
	`setToShear(number shx, number shy) ⇒ !goog.graphics.AffineTransform` Sets this transform to a shearing transformation.
	`setToTranslation(number dx, number dy) ⇒ !goog.graphics.AffineTransform` Sets this transform to a translation transformation.
	`setTransform(number m00, number m10, number m01, number m11, number m02, number m12) ⇒ !goog.graphics.AffineTransform` Sets this transform to the matrix specified by the 6 values.
	`shear(number shx, number shy) ⇒ !goog.graphics.AffineTransform` Concatenates this transform with a shear transformation.
	`toString() ⇒ string`
	`transform(!Array src, number srcOff, !Array dst, number dstOff, number numPts)` Transforms an array of coordinates by this transform and stores the result into a destination array.
	`translate(number dx, number dy) ⇒ !goog.graphics.AffineTransform` Concatenates this transform with a translate transformation.

Static Method Summary
	`getRotateInstance(number theta, number x, number y) ⇒ !goog.graphics.AffineTransform` Creates a transform representing a rotation transformation.
	`getScaleInstance(number sx, number sy) ⇒ !goog.graphics.AffineTransform` Creates a transform representing a scaling transformation.
	`getShearInstance(number shx, number shy) ⇒ !goog.graphics.AffineTransform` Creates a transform representing a shearing transformation.
	`getTranslateInstance(number dx, number dy) ⇒ !goog.graphics.AffineTransform` Creates a transform representing a translation transformation.