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path: Cleanup _cairo_path_fixed_transform

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Clean up the code and make sure that _cairo_path_fixed_translate is
used whenever the _cairo_fixed_to_double rounding would result in the
matrix being approximated with a translation.
This commit is contained in:
Andrea Canciani 2010-10-21 17:11:48 +02:00
parent 34f1db13a1
commit 929571b4b5
1 changed files with 10 additions and 11 deletions
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21
src/cairo-path-fixed.c
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@ -975,6 +975,11 @@ _cairo_path_fixed_offset_and_scale (cairo_path_fixed_t *path,
cairo_path_buf_t *buf;
unsigned int i;
if (scalex == CAIRO_FIXED_ONE && scaley == CAIRO_FIXED_ONE) {
_cairo_path_fixed_translate (path, offx, offy);
return;
}
/* Recompute an approximation of the flags.
* It might be more strict than what is actually needed.
*/
@ -1062,17 +1067,11 @@ _cairo_path_fixed_transform (cairo_path_fixed_t *path,
if (matrix->yx == 0.0 && matrix->xy == 0.0) {
/* Fast path for the common case of scale+transform */
if (matrix->xx == 1. && matrix->yy == 1.) {
_cairo_path_fixed_translate (path,
_cairo_fixed_from_double (matrix->x0),
_cairo_fixed_from_double (matrix->y0));
} else {
_cairo_path_fixed_offset_and_scale (path,
_cairo_fixed_from_double (matrix->x0),
_cairo_fixed_from_double (matrix->y0),
_cairo_fixed_from_double (matrix->xx),
_cairo_fixed_from_double (matrix->yy));
}
_cairo_path_fixed_offset_and_scale (path,
_cairo_fixed_from_double (matrix->x0),
_cairo_fixed_from_double (matrix->y0),
_cairo_fixed_from_double (matrix->xx),
_cairo_fixed_from_double (matrix->yy));
return;
}