Add SkMatrix44::setColMajord, etc.

We have accessors for efficiently getting the matirx data, and it would be nice
if we had similar methods for setting the matrix entries.

Review URL: https://codereview.appspot.com/6851063

git-svn-id: http://skia.googlecode.com/svn/trunk@6494 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 15 insertions, 0 deletions

diff --git a/include/utils/SkMatrix44.h b/include/utils/SkMatrix44.h
index a046a079df..e1de7c72a2 100644
--- a/include/utils/SkMatrix44.h
+++ b/include/utils/SkMatrix44.h
@@ -126,11 +126,26 @@ public:
         this->set(row, col, SkDoubleToMScalar(value));
     }
 
+    /** These methods allow one to efficiently read matrix entries into an
+     *  array. The given array must have room for exactly 16 entries. Whenever
+     *  possible, they will try to use memcpy rather than an entry-by-entry
+     *  copy.
+     */
     void asColMajorf(float[]) const;
     void asColMajord(double[]) const;
     void asRowMajorf(float[]) const;
     void asRowMajord(double[]) const;
 
+    /** These methods allow one to efficiently set all matrix entries from an
+     *  array. The given array must have room for exactly 16 entries. Whenever
+     *  possible, they will try to use memcpy rather than an entry-by-entry
+     *  copy.
+     */
+    void setColMajorf(const float[]);
+    void setColMajord(const double[]);
+    void setRowMajorf(const float[]);
+    void setRowMajord(const double[]);
+
     bool isIdentity() const;
     void setIdentity();
     void reset() { this->setIdentity();}