diff options
| author | Campbell Barton <ideasman42@gmail.com> | 2013-02-19 17:15:34 +0400 |
|---|---|---|
| committer | Campbell Barton <ideasman42@gmail.com> | 2013-02-19 17:15:34 +0400 |
| commit | f7848569063386b5925cb692652b584ea8765572 (patch) | |
| tree | 9281014985ef7dedd71b95a7abeff03bf50b833d /source/blender/blenlib/BLI_math_base.h | |
| parent | 0528162eb691e9d0de39b5f72c427a4d96542f64 (diff) | |
make asserts that check for unit length vectors into a macro.
this was really not nice logic to try to fit into an assert.
Diffstat (limited to 'source/blender/blenlib/BLI_math_base.h')
| -rw-r--r-- | source/blender/blenlib/BLI_math_base.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/source/blender/blenlib/BLI_math_base.h b/source/blender/blenlib/BLI_math_base.h index 94063c9a40a..639512f7433 100644 --- a/source/blender/blenlib/BLI_math_base.h +++ b/source/blender/blenlib/BLI_math_base.h @@ -217,5 +217,25 @@ extern double round(double x); double double_round(double x, int ndigits); -#endif /* __BLI_MATH_BASE_H__ */ +/* asserts, some math functions expect normalized inputs + * check the vector is unit length, or zero length (which can't be helped in some cases). + */ +#ifdef DEBUG +# define BLI_ASSERT_UNIT_EPSILON 0.0001f +# define BLI_ASSERT_UNIT_V3(v) { \ + const float _test_unit = len_squared_v3(v); \ + BLI_assert((fabsf(_test_unit - 1.0f) < BLI_ASSERT_UNIT_EPSILON) || \ + (fabsf(_test_unit) < BLI_ASSERT_UNIT_EPSILON)); \ +} (void)0 + +# define BLI_ASSERT_UNIT_V2(v) { \ + const float _test_unit = len_squared_v2(v); \ + BLI_assert((fabsf(_test_unit - 1.0f) < BLI_ASSERT_UNIT_EPSILON) || \ + (fabsf(_test_unit) < BLI_ASSERT_UNIT_EPSILON)); \ +} (void)0 +#else +# define BLI_ASSERT_UNIT_V2(v) (void)0 +# define BLI_ASSERT_UNIT_V3(v) (void)0 +#endif +#endif /* __BLI_MATH_BASE_H__ */ |