make CanNormalize inline for the float build (big speedup for PathIter)

git-svn-id: http://skia.googlecode.com/svn/trunk@3845 2bbb7eff-a529-9590-31e7-b0007b416f81

2 files changed, 7 insertions, 6 deletions

diff --git a/include/core/SkPoint.h b/include/core/SkPoint.h
index 4570e25613..cc483a62ac 100644
--- a/include/core/SkPoint.h
+++ b/include/core/SkPoint.h
@@ -213,7 +213,13 @@ struct SK_API SkPoint {
      *  Return true if the computed length of the vector is >= the internal
      *  tolerance (used to avoid dividing by tiny values).
      */
-    static bool CanNormalize(SkScalar dx, SkScalar dy);
+    static bool CanNormalize(SkScalar dx, SkScalar dy)
+#ifdef SK_SCALAR_IS_FLOAT
+    // Simple enough (and performance critical sometimes) so we inline it.
+    { return (dx*dx + dy*dy) > (SK_ScalarNearlyZero * SK_ScalarNearlyZero); }
+#else
+    ;
+#endif
 
     bool canNormalize() const {
         return CanNormalize(fX, fY);
diff --git a/src/core/SkPoint.cpp b/src/core/SkPoint.cpp
index a347b86a7d..c51b7cabe1 100644
--- a/src/core/SkPoint.cpp
+++ b/src/core/SkPoint.cpp
@@ -118,11 +118,6 @@ SkScalar SkPoint::Normalize(SkPoint* pt) {
     return 0;
 }
 
-bool SkPoint::CanNormalize(SkScalar dx, SkScalar dy) {
-    float mag2_unused;
-    return !isLengthNearlyZero(dx, dy, &mag2_unused);
-}
-
 SkScalar SkPoint::Length(SkScalar dx, SkScalar dy) {
     return sk_float_sqrt(getLengthSquared(dx, dy));
 }