gdiplus: GdipVactorTransformMatrixPoints

[Nikolay Sivov]

Changelog:
   - GdipVectorTransformMatrixPoints implemented.
---
 dlls/gdiplus/gdiplus.spec |    2 +-
 dlls/gdiplus/matrix.c     |   20 ++++++++++++++++++++
 include/gdiplusflat.h     |    1 +
 3 files changed, 22 insertions(+), 1 deletions(-)

diff --git a/dlls/gdiplus/gdiplus.spec b/dlls/gdiplus/gdiplus.spec
index f697e50..513ae16 100644
--- a/dlls/gdiplus/gdiplus.spec
+++ b/dlls/gdiplus/gdiplus.spec
@@ -619,7 +619,7 @@
 @ stub GdipTranslateRegionI
 @ stub GdipTranslateTextureTransform
 @ stdcall GdipTranslateWorldTransform(ptr long long long)
-@ stub GdipVectorTransformMatrixPoints
+@ stdcall GdipVectorTransformMatrixPoints(ptr ptr long)
 @ stub GdipVectorTransformMatrixPointsI
 @ stub GdipWarpPath
 @ stub GdipWidenPath
diff --git a/dlls/gdiplus/matrix.c b/dlls/gdiplus/matrix.c
index dee6460..a40f690 100644
--- a/dlls/gdiplus/matrix.c
+++ b/dlls/gdiplus/matrix.c
@@ -281,3 +281,23 @@ GpStatus WINGDIPAPI GdipTranslateMatrix(GpMatrix *matrix, REAL offsetX,
 
     return Ok;
 }
+
+GpStatus WINGDIPAPI GdipVectorTransformMatrixPoints(GpMatrix *matrix, GpPointF *pts, INT count)
+{
+    REAL x, y;
+    INT i;
+
+    if(!matrix || !pts)
+        return InvalidParameter;
+
+    for(i = 0; i < count; i++)
+    {
+        x = pts[i].X;
+        y = pts[i].Y;
+
+        pts[i].X = x * matrix->matrix[0] + y * matrix->matrix[2];
+        pts[i].Y = x * matrix->matrix[1] + y * matrix->matrix[3];
+    }
+
+    return Ok;
+}
diff --git a/include/gdiplusflat.h b/include/gdiplusflat.h
index a9cdc54..339675a 100644
--- a/include/gdiplusflat.h
+++ b/include/gdiplusflat.h
@@ -229,6 +229,7 @@ GpStatus WINGDIPAPI GdipRotateMatrix(GpMatrix*,REAL,GpMatrixOrder);
 GpStatus WINGDIPAPI GdipScaleMatrix(GpMatrix*,REAL,REAL,GpMatrixOrder);
 GpStatus WINGDIPAPI GdipSetMatrixElements(GpMatrix*,REAL,REAL,REAL,REAL,REAL,REAL);
 GpStatus WINGDIPAPI GdipTransformMatrixPoints(GpMatrix*,GpPointF*,INT);
+GpStatus WINGDIPAPI GdipVectorTransformMatrixPoints(GpMatrix*,GpPointF*,INT);
 GpStatus WINGDIPAPI GdipTranslateMatrix(GpMatrix*,REAL,REAL,GpMatrixOrder);
 
 GpStatus WINGDIPAPI GdipCreatePathIter(GpPathIterator**,GpPath*);
-- 
1.4.4.4