Remove public version of SkMatrix::mapPointsWithStride.

Use private version already in SkMatrixPriv.

Change-Id: I6e9546afdf2b072402f9deecec99a6d236e2c7f4
Reviewed-on: https://skia-review.googlesource.com/91400
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/core/SkMatrixPriv.h b/src/core/SkMatrixPriv.h
index 7c00c4eb52..d5fd243369 100644
--- a/src/core/SkMatrixPriv.h
+++ b/src/core/SkMatrixPriv.h
@@ -63,6 +63,24 @@ public:
         return false;
     }
 
+    /** Maps count pts, skipping stride bytes to advance from one SkPoint to the next.
+        Points are mapped by multiplying each SkPoint by SkMatrix. Given:
+
+                     | A B C |        | x |
+            Matrix = | D E F |,  pt = | y |
+                     | G H I |        | 1 |
+
+        each resulting pts SkPoint is computed as:
+
+                          |A B C| |x|                               Ax+By+C   Dx+Ey+F
+            Matrix * pt = |D E F| |y| = |Ax+By+C Dx+Ey+F Gx+Hy+I| = ------- , -------
+                          |G H I| |1|                               Gx+Hy+I   Gx+Hy+I
+
+        @param mx      matrix used to map the points
+        @param pts     storage for mapped points
+        @param stride  size of record starting with SkPoint, in bytes
+        @param count   number of points to transform
+    */
     static void MapPointsWithStride(const SkMatrix& mx, SkPoint pts[], size_t stride, int count) {
         SkASSERT(stride >= sizeof(SkPoint));
         SkASSERT(0 == stride % sizeof(SkScalar));
@@ -106,6 +124,7 @@ public:
             Matrix * pt = |D E F| |y| = |Ax+By+C Dx+Ey+F Gx+Hy+I| = ------- , -------
                           |G H I| |1|                               Gx+Hy+I   Gx+Hy+I
 
+        @param mx      matrix used to map the points
         @param dst     storage for mapped points
         @param src     points to transform
         @param stride  size of record starting with SkPoint, in bytes