diff options
Diffstat (limited to 'libs/surfaceflinger/Transform.cpp')
| -rw-r--r-- | libs/surfaceflinger/Transform.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/libs/surfaceflinger/Transform.cpp b/libs/surfaceflinger/Transform.cpp index bec7a64..e8b0f45 100644 --- a/libs/surfaceflinger/Transform.cpp +++ b/libs/surfaceflinger/Transform.cpp @@ -103,6 +103,25 @@ void Transform::set( float xx, float xy, mType |= 0x80000000; } +void Transform::set(float radian, float x, float y) +{ + float r00 = cosf(radian); float r01 = -sinf(radian); + float r10 = sinf(radian); float r11 = cosf(radian); + mTransform.set(SkMatrix::kMScaleX, SkFloatToScalar(r00)); + mTransform.set(SkMatrix::kMSkewX, SkFloatToScalar(r01)); + mTransform.set(SkMatrix::kMSkewY, SkFloatToScalar(r10)); + mTransform.set(SkMatrix::kMScaleY, SkFloatToScalar(r11)); + mTransform.set(SkMatrix::kMTransX, SkIntToScalar(x - r00*x - r01*y)); + mTransform.set(SkMatrix::kMTransY, SkIntToScalar(y - r10*x - r11*y)); + mType |= 0x80000000 | SkMatrix::kTranslate_Mask; +} + +void Transform::scale(float s, float x, float y) +{ + mTransform.postScale(s, s, x, y); + mType |= 0x80000000; +} + void Transform::set(int tx, int ty) { if (tx | ty) { |