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Fix analysis of transformed meta surfaces

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This commit is contained in:
Adrian Johnson 2008-01-07 21:11:46 +10:30
parent 3c725d50db
commit d6a84302a0
1 changed files with 8 additions and 3 deletions
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11
src/cairo-analysis-surface.c
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@ -70,7 +70,7 @@ _cairo_analysis_surface_analyze_meta_surface_pattern (cairo_analysis_surface_t *
cairo_surface_pattern_t *surface_pattern;
cairo_status_t status;
cairo_bool_t old_has_ctm;
cairo_matrix_t old_ctm;
cairo_matrix_t old_ctm, p2d;
assert (pattern->type == CAIRO_PATTERN_TYPE_SURFACE);
surface_pattern = (cairo_surface_pattern_t *) pattern;
@ -78,7 +78,12 @@ _cairo_analysis_surface_analyze_meta_surface_pattern (cairo_analysis_surface_t *
old_ctm = surface->ctm;
old_has_ctm = surface->has_ctm;
cairo_matrix_multiply (&surface->ctm, &pattern->matrix, &surface->ctm);
p2d = pattern->matrix;
status = cairo_matrix_invert (&p2d);
/* _cairo_pattern_set_matrix guarantees invertibility */
assert (status == CAIRO_STATUS_SUCCESS);
cairo_matrix_multiply (&surface->ctm, &p2d, &surface->ctm);
surface->has_ctm = !_cairo_matrix_is_identity (&surface->ctm);
status = _cairo_meta_surface_replay_and_create_regions (surface_pattern->surface,
@ -114,7 +119,7 @@ _cairo_analysis_surface_add_operation (cairo_analysis_surface_t *surface,
&x1, &y1, &x2, &y2,
NULL);
rect->x = floor (x1);
rect->y = floor (x2);
rect->y = floor (y1);
x2 = ceil (x2) - rect->x;
y2 = ceil (y2) - rect->y;