static gboolean
gegl_affine_is_intermediate_node (OpAffine *affine)
{
GSList *connections;
GeglOperation *op = GEGL_OPERATION (affine);
connections = gegl_pad_get_connections (gegl_node_get_pad (op->node,
"output"));
if (! connections)
return FALSE;
do
{
GeglOperation *sink;
sink = gegl_connection_get_sink_node (connections->data)->operation;
if (! IS_OP_AFFINE (sink) ||
strcmp (affine->filter, OP_AFFINE (sink)->filter))
return FALSE;
}
while ((connections = g_slist_next (connections)));
return TRUE;
}
GList *
gegl_graph_get_connected_output_contexts (GeglGraphTraversal *path,
GeglPad *output_pad)
{
GList *result = NULL;
GSList *targets = gegl_pad_get_connections (output_pad);
GSList *targets_iter;
for (targets_iter = targets; targets_iter; targets_iter = g_slist_next (targets_iter))
{
GeglNode *target_node = gegl_connection_get_sink_node (targets_iter->data);
GeglOperationContext *target_context = g_hash_table_lookup (path->contexts, target_node);
/* Only include this target if it's part of the current path */
if (target_context)
{
const gchar *target_pad_name = gegl_pad_get_name (gegl_connection_get_sink_pad (targets_iter->data));
ContextConnection *result_element = g_new0 (ContextConnection, 1);
result_element->name = target_pad_name;
result_element->context = target_context;
result = g_list_prepend (result, result_element);
}
}
return result;
}
static gboolean
gegl_affine_is_composite_node (OpAffine *affine)
{
GSList *connections;
GeglOperation *op = GEGL_OPERATION (affine);
GeglOperation *source;
connections = gegl_pad_get_connections (gegl_node_get_pad (op->node,
"input"));
if (! connections)
return FALSE;
source = gegl_connection_get_source_node (connections->data)->operation;
return (IS_OP_AFFINE (source) &&
! strcmp (affine->filter, OP_AFFINE (source)->filter));
}
static void
gegl_affine_get_source_matrix (OpAffine *affine,
GeglMatrix3 *output)
{
GSList *connections;
GeglOperation *op = GEGL_OPERATION (affine);
GeglOperation *source;
connections = gegl_pad_get_connections (gegl_node_get_pad (op->node,
"input"));
g_assert (connections);
source = gegl_connection_get_source_node (connections->data)->operation;
g_assert (IS_OP_AFFINE (source));
gegl_affine_create_composite_matrix (OP_AFFINE (source), output);
/*gegl_matrix3_copy (output, OP_AFFINE (source)->matrix);*/
}