Make the GeglNode graph, take a reference on child. This reference will be dropped when the reference count on the graph reaches zero.

Render a rectangular region from a node.

Render a rectangular region from a node to the given buffer.

Makes a connection between the pads of two nodes, one pad should be a source pad the other a sink pad, order does not matter.

Makes a connection between the pads of two nodes.

Makes a connection between the pads of two nodes.

Creates a new processing node that performs the specified operation. All properties of the operation will have their default values. This is included as an addition to #gegl_node_new_child in the public API to have a non varargs entry point for bindings as well as sometimes simpler more readable code.

Performs hit detection by returning the node providing data at a given coordinate pair. Currently operates only on bounding boxes and not pixel data.

Disconnects node connected to input_pad of node (if any).

Gets properties of a GeglNode.

double level; char *path;

Returns the position and dimensions of a rectangle spanning the area defined by a node.

Retrieve which pads on which nodes are connected to a named output_pad, and the number of connections. Both the location for the generated nodes array and pads array can be left as NULL. If they are non NULL both should be freed with g_free. The arrays are NULL terminated.

Proxies are used to route between nodes of a subgraph contained within a node.

Proxies are used to route between nodes of a subgraph contained within a node.

Returns a GeglNode that keeps a reference on a child.

This is mainly included for language bindings. Using #gegl_node_get is more convenient when programming in C.

Valist version of #gegl_node_get.

Returns TRUE if the node has a pad with the specified name.

Returns the position and dimensions of a rectangle spanning the area defined by a node.

This is equivalent to gegl_node_connect (source, “output”, sink, “input”);

Synthetic sugar for linking a chain of nodes with “output”->”input”. The list is NULL terminated.

If the node has any input pads this function returns a null terminated array of pad names, otherwise it returns NULL. The return value can be freed with g_strfreev().

If the node has any output pads this function returns a null terminated array of pad names, otherwise it returns NULL. The return value can be freed with g_strfreev().

Creates a new processing node that performs the specified operation with a NULL terminated list of key/value pairs for initial parameter values configuring the operation. Usually the first pair should be “operation” and the type of operation to be associated. If no operation is provided the node doesn’t have an initial operation and can be used to construct a subgraph with special middle-man routing nodes created with

gegl_node_get_output_proxy and #gegl_node_get_input_proxy.

Render a composition. This can be used for instance on a node with a “png-save” operation to render all necessary data, and make it be written to file. This function wraps the usage of a GeglProcessor in a single blocking function call. If you need a non-blocking operation, then make a direct use of

gegl_processor_work. See GeglProcessor.

Removes a child from a GeglNode. The reference previously held will be dropped so increase the reference count before removing when reparenting a child between two graphs.

Set properties on a node, possible properties to be set are the properties of the currently set operations as well as “name” and “operation”. “operation” changes the current operations set for the node, “name” doesn’t have any role internally in GEGL.

gegl_node_set (node, “brightness”, -0.2, “contrast”, 2.0, NULL);

This is mainly included for language bindings. Using #gegl_node_set is more convenient when programming in C.

Sets the right value in animated properties of this node and all its dependendcies to be the specified time position.

Valist version of #gegl_node_set.

Returns a freshly allocated \0 terminated string containing a XML serialization of the composition produced by a node (and thus also the nodes contributing data to the specified node). To export a gegl graph, connect the internal output node to an output proxy (see

gegl_node_get_output_proxy.) and use the proxy node as the basis

for the serialization.

Returns a freshly allocated \0 terminated string containing a XML serialization of a segment of a graph from head to tail nodes. If tail is NULL then this behaves just like #gegl_node_to_xml.