gdiplus: Added GdipTransformMatrixPoints.

dlls/gdiplus/gdiplus.spec

@@ -582,7 +582,7 @@
 @ stub GdipStringFormatGetGenericDefault
 @ stub GdipStringFormatGetGenericTypographic
 @ stub GdipTestControl
-@ stub GdipTransformMatrixPoints
+@ stdcall GdipTransformMatrixPoints(ptr ptr long)
 @ stub GdipTransformMatrixPointsI
 @ stub GdipTransformPath
 @ stub GdipTransformPoints

dlls/gdiplus/matrix.c

@@ -56,3 +56,24 @@ GpStatus WINGDIPAPI GdipDeleteMatrix(GpMatrix *matrix)
 
     return Ok;
 }
+
+GpStatus WINGDIPAPI GdipTransformMatrixPoints(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] + matrix->matrix[4];
+        pts[i].Y = x * matrix->matrix[1] + y * matrix->matrix[3] + matrix->matrix[5];
+    }
+
+    return Ok;
+}

include/gdiplusflat.h

@@ -62,6 +62,7 @@ GpStatus WINGDIPAPI GdipStartPathFigure(GpPath*);
 
 GpStatus WINGDIPAPI GdipCreateMatrix2(REAL,REAL,REAL,REAL,REAL,REAL,GpMatrix**);
 GpStatus WINGDIPAPI GdipDeleteMatrix(GpMatrix*);
+GpStatus WINGDIPAPI GdipTransformMatrixPoints(GpMatrix*,GpPointF*,INT);
 
 #ifdef __cplusplus
 }