[gegl] distance-transform: pass-through for infinite planes (issue #179)
- From: Thomas Manni <tmanni src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gegl] distance-transform: pass-through for infinite planes (issue #179)
- Date: Wed, 31 Jul 2019 10:07:08 +0000 (UTC)
commit 9bf974140f47a451fadc4448e64231540fffee38
Author: Thomas Manni <thomas manni free fr>
Date: Wed Jul 31 11:56:46 2019 +0200
distance-transform: pass-through for infinite planes (issue #179)
operations/common-cxx/distance-transform.cc | 52 +++++++++++++++++++++++++----
1 file changed, 45 insertions(+), 7 deletions(-)
---
diff --git a/operations/common-cxx/distance-transform.cc b/operations/common-cxx/distance-transform.cc
index 396c224b8..9d7d2c304 100644
--- a/operations/common-cxx/distance-transform.cc
+++ b/operations/common-cxx/distance-transform.cc
@@ -88,10 +88,22 @@ static GeglRectangle
get_cached_region (GeglOperation *operation,
const GeglRectangle *roi)
{
- GeglRectangle result = *gegl_operation_source_get_bounding_box (operation, "input");
- return result;
+ const GeglRectangle *in_rect =
+ gegl_operation_source_get_bounding_box (operation, "input");
+
+ if (! in_rect || gegl_rectangle_is_infinite_plane (in_rect))
+ return *roi;
+
+ return *in_rect;
}
+static GeglRectangle
+get_required_for_output (GeglOperation *operation,
+ const gchar *input_pad,
+ const GeglRectangle *roi)
+{
+ return get_cached_region (operation, roi);
+}
/* Meijster helper functions for euclidean distance transform */
gfloat
@@ -290,7 +302,6 @@ binary_dt_1st_pass (GeglOperation *operation,
});
}
-
/**
* Process the gegl filter
* @param operation the given Gegl operation
@@ -399,6 +410,31 @@ process (GeglOperation *operation,
return TRUE;
}
+static gboolean
+operation_process (GeglOperation *operation,
+ GeglOperationContext *context,
+ const gchar *output_prop,
+ const GeglRectangle *result,
+ gint level)
+{
+ GeglOperationClass *operation_class;
+
+ const GeglRectangle *in_rect =
+ gegl_operation_source_get_bounding_box (operation, "input");
+
+ if (in_rect && gegl_rectangle_is_infinite_plane (in_rect))
+ {
+ gpointer in = gegl_operation_context_get_object (context, "input");
+ gegl_operation_context_take_object (context, "output",
+ G_OBJECT(g_object_ref (in)));
+ return TRUE;
+ }
+
+ operation_class = GEGL_OPERATION_CLASS (gegl_op_parent_class);
+
+ return operation_class->process (operation, context, output_prop, result,
+ gegl_operation_context_get_level (context));
+}
static void
gegl_op_class_init (GeglOpClass *klass)
@@ -427,10 +463,12 @@ gegl_op_class_init (GeglOpClass *klass)
operation_class = GEGL_OPERATION_CLASS (klass);
filter_class = GEGL_OPERATION_FILTER_CLASS (klass);
- operation_class->threaded = FALSE;
- operation_class->prepare = prepare;
- operation_class->get_cached_region = get_cached_region;
- filter_class->process = process;
+ operation_class->threaded = FALSE;
+ operation_class->prepare = prepare;
+ operation_class->process = operation_process;
+ operation_class->get_cached_region = get_cached_region;
+ operation_class->get_required_for_output = get_required_for_output;
+ filter_class->process = process;
gegl_operation_class_set_keys (operation_class,
"name", "gegl:distance-transform",
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