diff options
Diffstat (limited to 'source/blender/blenkernel/intern/unit.c')
| -rw-r--r-- | source/blender/blenkernel/intern/unit.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/source/blender/blenkernel/intern/unit.c b/source/blender/blenkernel/intern/unit.c index c0a373395dc..8606da0743b 100644 --- a/source/blender/blenkernel/intern/unit.c +++ b/source/blender/blenkernel/intern/unit.c @@ -372,6 +372,12 @@ static size_t unit_as_string(char *str, int len_max, double value, int prec, con value_conv = value / unit->scalar; + /* Adjust precision to expected number of significant digits. + * Note that here, we shall not have to worry about very big/small numbers, units are expected to replace + * 'scientific notation' in those cases. */ + prec -= integer_digits_d(value_conv); + CLAMP(prec, 0, 6); + /* Convert to a string */ len = BLI_snprintf_rlen(str, len_max, "%.*f", prec, value_conv); @@ -442,12 +448,15 @@ size_t bUnit_AsString(char *str, int len_max, double value, int prec, int system size_t i; i = unit_as_string(str, len_max, value_a, prec, usys, unit_a, '\0'); + prec -= integer_digits_d(value_a / unit_b->scalar) - integer_digits_d(value_b / unit_b->scalar); + prec = max_ii(prec, 0); + /* is there enough space for at least 1 char of the next unit? */ if (i + 2 < len_max) { str[i++] = ' '; /* use low precision since this is a smaller unit */ - i += unit_as_string(str + i, len_max - i, value_b, prec ? 1 : 0, usys, unit_b, '\0'); + i += unit_as_string(str + i, len_max - i, value_b, prec, usys, unit_b, '\0'); } return i; } |