diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/core/SkMatrix.h | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/include/core/SkMatrix.h b/include/core/SkMatrix.h index 533e5345ad..a8c50fc4d5 100644 --- a/include/core/SkMatrix.h +++ b/include/core/SkMatrix.h @@ -92,6 +92,18 @@ public: kMPersp2 }; + /** Affine arrays are in column major order + because that's how PDF and XPS like it. + */ + enum { + kAScaleX, + kASkewY, + kASkewX, + kAScaleY, + kATransX, + kATransY + }; + SkScalar operator[](int index) const { SkASSERT((unsigned)index < 9); return fMat[index]; @@ -318,12 +330,19 @@ public: */ bool invert(SkMatrix* inverse) const; - /** Fills the passed array with the tranform values in the right order - for PDFs. If the matrix is a perspective transform, returns false - and fills the array with an identity transform. - @param transform The array to fill in. + /** Fills the passed array with affine identity values + in column major order. + @param affine The array to fill with affine identity values. + Must not be NULL. + */ + static void SetAffineIdentity(SkScalar affine[6]); + + /** Fills the passed array with the affine values in column major order. + If the matrix is a perspective transform, returns false + and does not change the passed array. + @param affine The array to fill with affine values. Ignored if NULL. */ - bool pdfTransform(SkScalar transform[6]) const; + bool asAffine(SkScalar affine[6]) const; /** Apply this matrix to the array of points specified by src, and write the transformed points into the array of points specified by dst. |