diff options
Diffstat (limited to 'core/SkRect.h')
| -rw-r--r-- | core/SkRect.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/core/SkRect.h b/core/SkRect.h index 397e4a0..fd8cb16 100644 --- a/core/SkRect.h +++ b/core/SkRect.h @@ -732,6 +732,24 @@ struct SK_API SkRect { } /** + * Variant of round() that explicitly performs the rounding step (i.e. floor(x + 0.5)) using + * double instead of SkScalar (float). It does this by calling SkDScalarRoundToInt(), which + * may be slower than calling SkScalarRountToInt(), but gives slightly more accurate results. + * + * e.g. + * SkScalar x = 0.49999997f; + * int ix = SkScalarRoundToInt(x); + * SkASSERT(0 == ix); // <--- fails + * ix = SkDScalarRoundToInt(x); + * SkASSERT(0 == ix); // <--- succeeds + */ + void dround(SkIRect* dst) const { + SkASSERT(dst); + dst->set(SkDScalarRoundToInt(fLeft), SkDScalarRoundToInt(fTop), + SkDScalarRoundToInt(fRight), SkDScalarRoundToInt(fBottom)); + } + + /** * Set the dst rectangle by rounding "out" this rectangle, choosing the * SkScalarFloor of top and left, and the SkScalarCeil of right and bottom. */ |