Class AffineTransform
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Page Summary
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AffineTransform uses a 3x3 matrix to transform source coordinates into destination coordinates.
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The transformation involves scaling, shearing, and translation of coordinates.
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The class provides methods to retrieve the individual scaling, shearing, and translation elements.
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An AffineTransform object can be used to create a new AffineTransformBuilder.
A 3x3 matrix used to transform source coordinates (x1, y1) into destination coordinates (x2, y2) according to matrix multiplication:
[ x2 ] [ scaleX shearX translateX ] [ x1 ] [ y2 ] = [ shearY scaleY translateY ] [ y1 ] [ 1 ] [ 0 0 1 ] [ 1 ]
After transformation,
x2 = scaleX * x1 + shearX * y1 + translateX; y2 = scaleY * y1 + shearY * x1 + translateY;
Methods
| Method | Return type | Brief description |
|---|---|---|
get | Number | Gets the X coordinate scaling element. |
get | Number | Gets the Y coordinate scaling element. |
get | Number | Gets the X coordinate shearing element. |
get | Number | Gets the Y coordinate shearing element. |
get | Number | Gets the X coordinate translation element in points. |
get | Number | Gets the Y coordinate translation element in points. |
to | Affine | Returns a new Affine based on this transform. |
Detailed documentation
getScaleX()
Gets the X coordinate scaling element.
Return
Number
getScaleY()
Gets the Y coordinate scaling element.
Return
Number
getShearX()
Gets the X coordinate shearing element.
Return
Number
getShearY()
Gets the Y coordinate shearing element.
Return
Number
getTranslateX()
Gets the X coordinate translation element in points.
Return
Number
getTranslateY()
Gets the Y coordinate translation element in points.
Return
Number