AffineTransform Class

Module: cc Parent Module: cc

cc.AffineTransform class represent an affine transform matrix. It's composed basically by translation, rotation, scale transformations.
Please do not use its constructor directly, use cc.affineTransformMake alias function instead.

Index

Methods

• affineTransformMake Create a cc.AffineTransform object with all contents in the matrix.
• affineTransformClone Clone a cc.AffineTransform object from the specified transform.
• pointApplyAffineTransform Apply the affine transformation on a point.
• sizeApplyAffineTransform Apply the affine transformation on a size.
• affineTransformMakeIdentity Create a identity transformation matrix:
  [ 1, 0, 0,
  0, 1, 0 ]
• rectApplyAffineTransform Apply the affine transformation on a rect.
• obbApplyAffineTransform Apply the affine transformation on a rect, and truns to an Oriented Bounding Box.
• affineTransformTranslate Create a new affine transformation with a base transformation matrix and a translation based on it.
• affineTransformScale Create a new affine transformation with a base transformation matrix and a scale based on it.
• affineTransformRotate Create a new affine transformation with a base transformation matrix and a rotation based on it.
• affineTransformConcat Concatenate a transform matrix to another and return the result:
  t' = t1 * t2
• affineTransformConcatIn Concatenate a transform matrix to another
  The results are reflected in the first matrix.
  t' = t1 * t2
• affineTransformEqualToTransform Return true if an affine transform equals to another, false otherwise.
• affineTransformInvert Get the invert transform of an AffineTransform object.
• affineTransformInvert Put the invert transform of an AffineTransform object into the out AffineTransform object.

Details

Methods

affineTransformMake

Create a cc.AffineTransform object with all contents in the matrix.

Parameters

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

affineTransformClone

Clone a cc.AffineTransform object from the specified transform.

Parameters

• t AffineTransform

pointApplyAffineTransform

Apply the affine transformation on a point.

Parameters

• point Vec2 | Number or x.
• transOrY AffineTransform | Number transform matrix or y.
• t AffineTransform transform matrix or y.

sizeApplyAffineTransform

Apply the affine transformation on a size.

Parameters

• size Size
• t AffineTransform

affineTransformMakeIdentity

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

rectApplyAffineTransform

Apply the affine transformation on a rect.

Parameters

• rect Rect
• anAffineTransform AffineTransform

obbApplyAffineTransform

Apply the affine transformation on a rect, and truns to an Oriented Bounding Box.

Parameters

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

affineTransformTranslate

Create a new affine transformation with a base transformation matrix and a translation based on it.

Parameters

• t AffineTransform The base affine transform object.
• tx Number The translation on x axis.
• ty Number The translation on y axis.

affineTransformScale

Create a new affine transformation with a base transformation matrix and a scale based on it.

Parameters

• t AffineTransform The base affine transform object.
• sx Number The scale on x axis.
• sy Number The scale on y axis.

affineTransformRotate

Create a new affine transformation with a base transformation matrix and a rotation based on it.

Parameters

• aTransform AffineTransform The base affine transform object.
• anAngle Number The angle to rotate.

affineTransformConcat

Concatenate a transform matrix to another and return the result:
t' = t1 * t2

Parameters

• t1 AffineTransform The first transform object.
• t2 AffineTransform The transform object to concatenate.

affineTransformConcatIn

Concatenate a transform matrix to another
The results are reflected in the first matrix.
t' = t1 * t2

Parameters

• t1 AffineTransform The first transform object.
• t2 AffineTransform The transform object to concatenate.

affineTransformEqualToTransform

Return true if an affine transform equals to another, false otherwise.

Parameters

• t1 AffineTransform
• t2 AffineTransform

affineTransformInvert

Get the invert transform of an AffineTransform object.

Parameters

• t AffineTransform

affineTransformInvert

Put the invert transform of an AffineTransform object into the out AffineTransform object.

Parameters

• t AffineTransform
• out AffineTransform