gdiplus: Implemented GdipVectorTransformMatrixPoints.

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

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;
+}

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*);