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Refactor _cairo_matrix_is_integer_translation

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Now that we have _cairo_matrix_is_translation, we can change
_cairo_matrix_is_integer_translation to use it and thus reduce code
duplication.
This commit is contained in:
Dan Amelang 2006-11-20 14:08:46 -08:00 • committed by Carl Worth
parent ca79307bdf
commit 6cfb4a01e0
1 changed files with 17 additions and 21 deletions
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38
src/cairo-matrix.c
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@ -556,31 +556,27 @@ _cairo_matrix_is_translation (const cairo_matrix_t *matrix)
}
cairo_bool_t
_cairo_matrix_is_integer_translation(const cairo_matrix_t *m,
int *itx, int *ity)
_cairo_matrix_is_integer_translation (const cairo_matrix_t *matrix,
int *itx, int *ity)
{
cairo_bool_t is_integer_translation;
cairo_fixed_t x0_fixed, y0_fixed;
if (_cairo_matrix_is_translation (matrix))
{
cairo_fixed_t x0_fixed = _cairo_fixed_from_double (matrix->x0);
cairo_fixed_t y0_fixed = _cairo_fixed_from_double (matrix->y0);
x0_fixed = _cairo_fixed_from_double (m->x0);
y0_fixed = _cairo_fixed_from_double (m->y0);
if (_cairo_fixed_is_integer (x0_fixed) &&
_cairo_fixed_is_integer (y0_fixed))
{
if (itx)
*itx = _cairo_fixed_integer_part (x0_fixed);
if (ity)
*ity = _cairo_fixed_integer_part (y0_fixed);
is_integer_translation = ((m->xx == 1.0) &&
(m->yx == 0.0) &&
(m->xy == 0.0) &&
(m->yy == 1.0) &&
(_cairo_fixed_is_integer(x0_fixed)) &&
(_cairo_fixed_is_integer(y0_fixed)));
return TRUE;
}
}
if (! is_integer_translation)
return FALSE;
if (itx)
*itx = _cairo_fixed_integer_part(x0_fixed);
if (ity)
*ity = _cairo_fixed_integer_part(y0_fixed);
return TRUE;
return FALSE;
}
/*