AffineTransform Class

Module: cc Parent Module: cc

AffineTransform class represent an affine transform matrix. It's composed basically by translation, rotation, scale transformations.

Index

Methods

• create Create a AffineTransform object with all contents in the matrix.
• identity Create a identity transformation matrix: ...
• clone Clone a AffineTransform object from the specified transform.
• concat Concatenate a transform matrix to another
• invert Get the invert transform of an AffineTransform object.
• invert Get an AffineTransform object from a given matrix 4x4.
• transformVec2 Apply the affine transformation on a point.
• transformSize Apply the affine transformation on a size.
• transformRect Apply the affine transformation on a rect.
• transformObb Apply the affine transformation on a rect, and truns to an Oriented Bounding Box.

Details

Methods

create

Create a AffineTransform object with all contents in the matrix.

Parameters

• a Number
• b Number
• c Number
• d Number
• tx Number
• ty Number

identity

Create a identity transformation matrix:
[ 1, 0, 0,
0, 1, 0 ]

clone

Clone a AffineTransform object from the specified transform.

Parameters

• t AffineTransform

concat

Concatenate a transform matrix to another The results are reflected in the out affine transform out = t1 * t2 This function is memory free, you should create the output affine transform by yourself and manage its memory.

Parameters

• out AffineTransform Out object to store the concat result
• t1 AffineTransform The first transform object.
• t2 AffineTransform The transform object to concatenate.

invert

Get the invert transform of an AffineTransform object. This function is memory free, you should create the output affine transform by yourself and manage its memory.

Parameters

• out AffineTransform
• t AffineTransform

invert

Get an AffineTransform object from a given matrix 4x4. This function is memory free, you should create the output affine transform by yourself and manage its memory.

Parameters

• out AffineTransform
• mat Mat4

transformVec2

Apply the affine transformation on a point. This function is memory free, you should create the output Vec2 by yourself and manage its memory.

Parameters

• out Vec2 The output point to store the result
• point Vec2 | Number Point to apply transform or x.
• transOrY AffineTransform | Number transform matrix or y.
• t AffineTransform transform matrix.

transformSize

Apply the affine transformation on a size. This function is memory free, you should create the output Size by yourself and manage its memory.

Parameters

• out Size The output point to store the result
• size Size
• t AffineTransform

transformRect

Apply the affine transformation on a rect. This function is memory free, you should create the output Rect by yourself and manage its memory.

Parameters

• out Rect
• rect Rect
• anAffineTransform AffineTransform

transformObb

Apply the affine transformation on a rect, and truns to an Oriented Bounding Box. This function is memory free, you should create the output vectors by yourself and manage their memory.

Parameters

• out_bl Vec2
• out_tl Vec2
• out_tr Vec2
• out_br Vec2
• rect Rect
• anAffineTransform AffineTransform