PyNodes opens up the node system in Blender to scripters and adds a number of UI-level improvements.
=== Dynamic node type registration ===
Node types can now be added at runtime, using the RNA registration mechanism from python. This enables addons such as render engines to create a complete user interface with nodes.
Examples of how such nodes can be defined can be found in my personal wiki docs atm [1] and as a script template in release/scripts/templates_py/custom_nodes.py [2].
=== Node group improvements ===
Each node editor now has a tree history of edited node groups, which allows opening and editing nested node groups. The node editor also supports pinning now, so that different spaces can be used to edit different node groups simultaneously. For more ramblings and rationale see (really old) blog post on code.blender.org [3].
The interface of node groups has been overhauled. Sockets of a node group are no longer displayed in columns on either side, but instead special input/output nodes are used to mirror group sockets inside a node tree. This solves the problem of long node lines in groups and allows more adaptable node layout. Internal sockets can be exposed from a group by either connecting to the extension sockets in input/output nodes (shown as empty circle) or by adding sockets from the node property bar in the "Interface" panel. Further details such as the socket name can also be changed there.
[1] http://wiki.blender.org/index.php/User:Phonybone/Python_Nodes
[2] http://projects.blender.org/scm/viewvc.php/trunk/blender/release/scripts/templates_py/custom_nodes.py?view=markup&root=bf-blender
[3] http://code.blender.org/index.php/2012/01/improving-node-group-interface-editing/
Most nodes use the default size now and don't need explicit function calls. Most remaining nodes can also use the preset variant instead of explicit size values, these are only needed for a few special nodes.
Thanks to Sebastian König for suggesting this and doing the monkey work of changing node definitions.
You served well and now desired retirement, but you'll always live in our hearts.
And for sure -- monument!
+-------------------------------------------+
/ ++==+ . .. . ... . .. . /
/ // ++==++ ++ ++ ++==++ ++==++ /
/ // // // //\\//\\ // // // // /
/ ++==+ ++==++ // \\ //==++ ++==++ /
/ . ... .. . // .. ... /
+-------------------------------------------+
Some notes:
- Removed all code which was from inside ifdef WITH_COMPOSITOR_LEGACY
- Removed some functions which were used by old compositor only but
weren't ported to new color management
- Removed WITH_COMPOSITOR_LEGACY from build systems
- node_composite_util.h was in fatc used by compo nodes specification
files, so added it back to cmake.
Could be cleaned up by moving header files to files where they're
actually needed but would consider this is a separate task.
- Should be no functional changes!
A test variable needed to be absoluted (positive).
Gives expected resuts on negative raiser values.
(next; digging in opencl :)
(In old compo code too, not effective).
Note that I had to script-tag all sokets' names, as they are currently completely unknown from bpy.types (and hence unreachable for our po generating scripts).
This allows node type init code to have access to the nodetree type object (needed to allow generic muting node initialization). Huge and boring edits...
This branch adds mostly organizational improvements to the node system by renaming the node folders and files. A couple of internal features have been added too.
Detailed information can be found on the wiki page:
http://wiki.blender.org/index.php/User:Phonybone/Particles2010
