Controling compositor by python

Question

I've been looking at the python code loging of Blender. But in there things get loged as mouse clicks.

What i like to do is combine a few images into a larger one using compositor, but i need control over compositor by python script. The problem seams to me that it is a bit hard to "spawn" a few nodes, set their values and connect them.

I need an micture of: image, scale, source image location, mix nodes, output nodes

I have no Code samples other then the log of blender python which in this case is of no big help.

score 40 · Accepted Answer · edited Nov 16 '19 at 22:32

40

A simple code example:

# switch on nodes and get reference
bpy.context.scene.use_nodes = True
tree = bpy.context.scene.node_tree

# clear default nodes
for node in tree.nodes:
    tree.nodes.remove(node)

# create input image node
image_node = tree.nodes.new(type='CompositorNodeImage')
image_node.image = bpy.data.images['YOUR_IMAGE_NAME']
image_node.location = 0,0

# create output node
comp_node = tree.nodes.new('CompositorNodeComposite')   
comp_node.location = 400,0

# link nodes
links = tree.links
link = links.new(image_node.outputs[0], comp_node.inputs[0])

Here are node types you can create:
Nodes subclasses API

If you need anything more let me know.

edited Nov 16 '19 at 22:32

p2or

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answered Dec 03 '14 at 17:53

Jaroslav Jerryno Novotny

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the code fails me, could you post an example that works ? i itry to correct it myself but not sure what to type – user613326 Dec 09 '14 at 11:28
This example works for me, what error message do you get? – Jaroslav Jerryno Novotny Dec 09 '14 at 13:36
Python script fail, look in the console for now. But the console doesnt show anything so i'm puzzled. – user613326 Dec 11 '14 at 12:21
Its the System console: MainMenuBar > Window > ToggleSystemConsole – Jaroslav Jerryno Novotny Dec 11 '14 at 12:45
Aha it wants to load an image, from the location of the blend file; but it needs to use a fixed set path D:\BlenderTemp\myimage.jpg – user613326 Dec 11 '14 at 15:23

Controling compositor by python

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