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node_wrangler.py
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node_wrangler.py
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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
bl_info = {
"name": "Node Wrangler",
"author": "Bartek Skorupa, Greg Zaal, Sebastian Koenig, Christian Brinkmann, Florian Meyer",
"version": (3, 35),
"blender": (2, 80, 0),
"location": "Node Editor Toolbar or Ctrl-Space",
"description": "Various tools to enhance and speed up node-based workflow",
"warning": "",
"wiki_url": "http:https://wiki.blender.org/index.php/Extensions:2.6/Py/"
"Scripts/Nodes/Nodes_Efficiency_Tools",
"category": "Node",
}
import bpy, blf, bgl
from bpy.types import Operator, Panel, Menu
from bpy.props import (
FloatProperty,
EnumProperty,
BoolProperty,
IntProperty,
StringProperty,
FloatVectorProperty,
CollectionProperty,
)
from bpy_extras.io_utils import ImportHelper, ExportHelper
from mathutils import Vector
from math import cos, sin, pi, hypot
from os import path
from glob import glob
from copy import copy
from itertools import chain
import re
from collections import namedtuple
#################
# rl_outputs:
# list of outputs of Input Render Layer
# with attributes determinig if pass is used,
# and MultiLayer EXR outputs names and corresponding render engines
#
# rl_outputs entry = (render_pass, rl_output_name, exr_output_name, in_internal, in_cycles)
RL_entry = namedtuple('RL_Entry', ['render_pass', 'output_name', 'exr_output_name', 'in_internal', 'in_cycles'])
rl_outputs = (
RL_entry('use_pass_ambient_occlusion', 'AO', 'AO', True, True),
RL_entry('use_pass_color', 'Color', 'Color', True, False),
RL_entry('use_pass_combined', 'Image', 'Combined', True, True),
RL_entry('use_pass_diffuse', 'Diffuse', 'Diffuse', True, False),
RL_entry('use_pass_diffuse_color', 'Diffuse Color', 'DiffCol', False, True),
RL_entry('use_pass_diffuse_direct', 'Diffuse Direct', 'DiffDir', False, True),
RL_entry('use_pass_diffuse_indirect', 'Diffuse Indirect', 'DiffInd', False, True),
RL_entry('use_pass_emit', 'Emit', 'Emit', True, False),
RL_entry('use_pass_environment', 'Environment', 'Env', True, False),
RL_entry('use_pass_glossy_color', 'Glossy Color', 'GlossCol', False, True),
RL_entry('use_pass_glossy_direct', 'Glossy Direct', 'GlossDir', False, True),
RL_entry('use_pass_glossy_indirect', 'Glossy Indirect', 'GlossInd', False, True),
RL_entry('use_pass_indirect', 'Indirect', 'Indirect', True, False),
RL_entry('use_pass_material_index', 'IndexMA', 'IndexMA', True, True),
RL_entry('use_pass_mist', 'Mist', 'Mist', True, False),
RL_entry('use_pass_normal', 'Normal', 'Normal', True, True),
RL_entry('use_pass_object_index', 'IndexOB', 'IndexOB', True, True),
RL_entry('use_pass_reflection', 'Reflect', 'Reflect', True, False),
RL_entry('use_pass_refraction', 'Refract', 'Refract', True, False),
RL_entry('use_pass_shadow', 'Shadow', 'Shadow', True, True),
RL_entry('use_pass_specular', 'Specular', 'Spec', True, False),
RL_entry('use_pass_subsurface_color', 'Subsurface Color', 'SubsurfaceCol', False, True),
RL_entry('use_pass_subsurface_direct', 'Subsurface Direct', 'SubsurfaceDir', False, True),
RL_entry('use_pass_subsurface_indirect', 'Subsurface Indirect', 'SubsurfaceInd', False, True),
RL_entry('use_pass_transmission_color', 'Transmission Color', 'TransCol', False, True),
RL_entry('use_pass_transmission_direct', 'Transmission Direct', 'TransDir', False, True),
RL_entry('use_pass_transmission_indirect', 'Transmission Indirect', 'TransInd', False, True),
RL_entry('use_pass_uv', 'UV', 'UV', True, True),
RL_entry('use_pass_vector', 'Speed', 'Vector', True, True),
RL_entry('use_pass_z', 'Z', 'Depth', True, True),
)
# shader nodes
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
shaders_input_nodes_props = (
('ShaderNodeTexCoord', 'TEX_COORD', 'Texture Coordinate'),
('ShaderNodeAttribute', 'ATTRIBUTE', 'Attribute'),
('ShaderNodeLightPath', 'LIGHT_PATH', 'Light Path'),
('ShaderNodeFresnel', 'FRESNEL', 'Fresnel'),
('ShaderNodeLayerWeight', 'LAYER_WEIGHT', 'Layer Weight'),
('ShaderNodeRGB', 'RGB', 'RGB'),
('ShaderNodeValue', 'VALUE', 'Value'),
('ShaderNodeTangent', 'TANGENT', 'Tangent'),
('ShaderNodeNewGeometry', 'NEW_GEOMETRY', 'Geometry'),
('ShaderNodeWireframe', 'WIREFRAME', 'Wireframe'),
('ShaderNodeObjectInfo', 'OBJECT_INFO', 'Object Info'),
('ShaderNodeHairInfo', 'HAIR_INFO', 'Hair Info'),
('ShaderNodeParticleInfo', 'PARTICLE_INFO', 'Particle Info'),
('ShaderNodeCameraData', 'CAMERA', 'Camera Data'),
('ShaderNodeUVMap', 'UVMAP', 'UV Map'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
shaders_output_nodes_props = (
('ShaderNodeOutputMaterial', 'OUTPUT_MATERIAL', 'Material Output'),
('ShaderNodeOutputLight', 'OUTPUT_LIGHT', 'Light Output'),
('ShaderNodeOutputWorld', 'OUTPUT_WORLD', 'World Output'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
shaders_shader_nodes_props = (
('ShaderNodeMixShader', 'MIX_SHADER', 'Mix Shader'),
('ShaderNodeAddShader', 'ADD_SHADER', 'Add Shader'),
('ShaderNodeBsdfDiffuse', 'BSDF_DIFFUSE', 'Diffuse BSDF'),
('ShaderNodeBsdfGlossy', 'BSDF_GLOSSY', 'Glossy BSDF'),
('ShaderNodeBsdfTransparent', 'BSDF_TRANSPARENT', 'Transparent BSDF'),
('ShaderNodeBsdfRefraction', 'BSDF_REFRACTION', 'Refraction BSDF'),
('ShaderNodeBsdfGlass', 'BSDF_GLASS', 'Glass BSDF'),
('ShaderNodeBsdfTranslucent', 'BSDF_TRANSLUCENT', 'Translucent BSDF'),
('ShaderNodeBsdfAnisotropic', 'BSDF_ANISOTROPIC', 'Anisotropic BSDF'),
('ShaderNodeBsdfVelvet', 'BSDF_VELVET', 'Velvet BSDF'),
('ShaderNodeBsdfToon', 'BSDF_TOON', 'Toon BSDF'),
('ShaderNodeSubsurfaceScattering', 'SUBSURFACE_SCATTERING', 'Subsurface Scattering'),
('ShaderNodeEmission', 'EMISSION', 'Emission'),
('ShaderNodeBsdfHair', 'BSDF_HAIR', 'Hair BSDF'),
('ShaderNodeBackground', 'BACKGROUND', 'Background'),
('ShaderNodeAmbientOcclusion', 'AMBIENT_OCCLUSION', 'Ambient Occlusion'),
('ShaderNodeHoldout', 'HOLDOUT', 'Holdout'),
('ShaderNodeVolumeAbsorption', 'VOLUME_ABSORPTION', 'Volume Absorption'),
('ShaderNodeVolumeScatter', 'VOLUME_SCATTER', 'Volume Scatter'),
('ShaderNodeBsdfPrincipled', 'BSDF_PRINCIPLED', 'Principled BSDF'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
shaders_texture_nodes_props = (
('ShaderNodeTexBrick', 'TEX_BRICK', 'Brick Texture'),
('ShaderNodeTexChecker', 'TEX_CHECKER', 'Checker Texture'),
('ShaderNodeTexEnvironment', 'TEX_ENVIRONMENT', 'Environment Texture'),
('ShaderNodeTexGradient', 'TEX_GRADIENT', 'Gradient Texture'),
('ShaderNodeTexImage', 'TEX_IMAGE', 'Image Texture'),
('ShaderNodeTexMagic', 'TEX_MAGIC', 'Magic Texture'),
('ShaderNodeTexMusgrave', 'TEX_MUSGRAVE', 'Musgrave Texture'),
('ShaderNodeTexNoise', 'TEX_NOISE', 'Noise Texture'),
('ShaderNodeTexPointDensity', 'TEX_POINTDENSITY', 'Point Density'),
('ShaderNodeTexSky', 'TEX_SKY', 'Sky Texture'),
('ShaderNodeTexVoronoi', 'TEX_VORONOI', 'Voronoi Texture'),
('ShaderNodeTexWave', 'TEX_WAVE', 'Wave Texture'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
shaders_color_nodes_props = (
('ShaderNodeMixRGB', 'MIX_RGB', 'MixRGB'),
('ShaderNodeRGBCurve', 'CURVE_RGB', 'RGB Curves'),
('ShaderNodeInvert', 'INVERT', 'Invert'),
('ShaderNodeLightFalloff', 'LIGHT_FALLOFF', 'Light Falloff'),
('ShaderNodeHueSaturation', 'HUE_SAT', 'Hue/Saturation'),
('ShaderNodeGamma', 'GAMMA', 'Gamma'),
('ShaderNodeBrightContrast', 'BRIGHTCONTRAST', 'Bright Contrast'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
shaders_vector_nodes_props = (
('ShaderNodeMapping', 'MAPPING', 'Mapping'),
('ShaderNodeBump', 'BUMP', 'Bump'),
('ShaderNodeNormalMap', 'NORMAL_MAP', 'Normal Map'),
('ShaderNodeNormal', 'NORMAL', 'Normal'),
('ShaderNodeVectorCurve', 'CURVE_VEC', 'Vector Curves'),
('ShaderNodeVectorTransform', 'VECT_TRANSFORM', 'Vector Transform'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
shaders_converter_nodes_props = (
('ShaderNodeMath', 'MATH', 'Math'),
('ShaderNodeValToRGB', 'VALTORGB', 'ColorRamp'),
('ShaderNodeRGBToBW', 'RGBTOBW', 'RGB to BW'),
('ShaderNodeVectorMath', 'VECT_MATH', 'Vector Math'),
('ShaderNodeSeparateRGB', 'SEPRGB', 'Separate RGB'),
('ShaderNodeCombineRGB', 'COMBRGB', 'Combine RGB'),
('ShaderNodeSeparateXYZ', 'SEPXYZ', 'Separate XYZ'),
('ShaderNodeCombineXYZ', 'COMBXYZ', 'Combine XYZ'),
('ShaderNodeSeparateHSV', 'SEPHSV', 'Separate HSV'),
('ShaderNodeCombineHSV', 'COMBHSV', 'Combine HSV'),
('ShaderNodeWavelength', 'WAVELENGTH', 'Wavelength'),
('ShaderNodeBlackbody', 'BLACKBODY', 'Blackbody'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
shaders_layout_nodes_props = (
('NodeFrame', 'FRAME', 'Frame'),
('NodeReroute', 'REROUTE', 'Reroute'),
)
# compositing nodes
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_input_nodes_props = (
('CompositorNodeRLayers', 'R_LAYERS', 'Render Layers'),
('CompositorNodeImage', 'IMAGE', 'Image'),
('CompositorNodeMovieClip', 'MOVIECLIP', 'Movie Clip'),
('CompositorNodeMask', 'MASK', 'Mask'),
('CompositorNodeRGB', 'RGB', 'RGB'),
('CompositorNodeValue', 'VALUE', 'Value'),
('CompositorNodeTexture', 'TEXTURE', 'Texture'),
('CompositorNodeBokehImage', 'BOKEHIMAGE', 'Bokeh Image'),
('CompositorNodeTime', 'TIME', 'Time'),
('CompositorNodeTrackPos', 'TRACKPOS', 'Track Position'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_output_nodes_props = (
('CompositorNodeComposite', 'COMPOSITE', 'Composite'),
('CompositorNodeViewer', 'VIEWER', 'Viewer'),
('CompositorNodeSplitViewer', 'SPLITVIEWER', 'Split Viewer'),
('CompositorNodeOutputFile', 'OUTPUT_FILE', 'File Output'),
('CompositorNodeLevels', 'LEVELS', 'Levels'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_color_nodes_props = (
('CompositorNodeMixRGB', 'MIX_RGB', 'Mix'),
('CompositorNodeAlphaOver', 'ALPHAOVER', 'Alpha Over'),
('CompositorNodeInvert', 'INVERT', 'Invert'),
('CompositorNodeCurveRGB', 'CURVE_RGB', 'RGB Curves'),
('CompositorNodeHueSat', 'HUE_SAT', 'Hue Saturation Value'),
('CompositorNodeColorBalance', 'COLORBALANCE', 'Color Balance'),
('CompositorNodeHueCorrect', 'HUECORRECT', 'Hue Correct'),
('CompositorNodeBrightContrast', 'BRIGHTCONTRAST', 'Bright/Contrast'),
('CompositorNodeGamma', 'GAMMA', 'Gamma'),
('CompositorNodeColorCorrection', 'COLORCORRECTION', 'Color Correction'),
('CompositorNodeTonemap', 'TONEMAP', 'Tonemap'),
('CompositorNodeZcombine', 'ZCOMBINE', 'Z Combine'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_converter_nodes_props = (
('CompositorNodeMath', 'MATH', 'Math'),
('CompositorNodeValToRGB', 'VALTORGB', 'ColorRamp'),
('CompositorNodeSetAlpha', 'SETALPHA', 'Set Alpha'),
('CompositorNodePremulKey', 'PREMULKEY', 'Alpha Convert'),
('CompositorNodeIDMask', 'ID_MASK', 'ID Mask'),
('CompositorNodeRGBToBW', 'RGBTOBW', 'RGB to BW'),
('CompositorNodeSepRGBA', 'SEPRGBA', 'Separate RGBA'),
('CompositorNodeCombRGBA', 'COMBRGBA', 'Combine RGBA'),
('CompositorNodeSepHSVA', 'SEPHSVA', 'Separate HSVA'),
('CompositorNodeCombHSVA', 'COMBHSVA', 'Combine HSVA'),
('CompositorNodeSepYUVA', 'SEPYUVA', 'Separate YUVA'),
('CompositorNodeCombYUVA', 'COMBYUVA', 'Combine YUVA'),
('CompositorNodeSepYCCA', 'SEPYCCA', 'Separate YCbCrA'),
('CompositorNodeCombYCCA', 'COMBYCCA', 'Combine YCbCrA'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_filter_nodes_props = (
('CompositorNodeBlur', 'BLUR', 'Blur'),
('CompositorNodeBilateralblur', 'BILATERALBLUR', 'Bilateral Blur'),
('CompositorNodeDilateErode', 'DILATEERODE', 'Dilate/Erode'),
('CompositorNodeDespeckle', 'DESPECKLE', 'Despeckle'),
('CompositorNodeFilter', 'FILTER', 'Filter'),
('CompositorNodeBokehBlur', 'BOKEHBLUR', 'Bokeh Blur'),
('CompositorNodeVecBlur', 'VECBLUR', 'Vector Blur'),
('CompositorNodeDefocus', 'DEFOCUS', 'Defocus'),
('CompositorNodeGlare', 'GLARE', 'Glare'),
('CompositorNodeInpaint', 'INPAINT', 'Inpaint'),
('CompositorNodeDBlur', 'DBLUR', 'Directional Blur'),
('CompositorNodePixelate', 'PIXELATE', 'Pixelate'),
('CompositorNodeSunBeams', 'SUNBEAMS', 'Sun Beams'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_vector_nodes_props = (
('CompositorNodeNormal', 'NORMAL', 'Normal'),
('CompositorNodeMapValue', 'MAP_VALUE', 'Map Value'),
('CompositorNodeMapRange', 'MAP_RANGE', 'Map Range'),
('CompositorNodeNormalize', 'NORMALIZE', 'Normalize'),
('CompositorNodeCurveVec', 'CURVE_VEC', 'Vector Curves'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_matte_nodes_props = (
('CompositorNodeKeying', 'KEYING', 'Keying'),
('CompositorNodeKeyingScreen', 'KEYINGSCREEN', 'Keying Screen'),
('CompositorNodeChannelMatte', 'CHANNEL_MATTE', 'Channel Key'),
('CompositorNodeColorSpill', 'COLOR_SPILL', 'Color Spill'),
('CompositorNodeBoxMask', 'BOXMASK', 'Box Mask'),
('CompositorNodeEllipseMask', 'ELLIPSEMASK', 'Ellipse Mask'),
('CompositorNodeLumaMatte', 'LUMA_MATTE', 'Luminance Key'),
('CompositorNodeDiffMatte', 'DIFF_MATTE', 'Difference Key'),
('CompositorNodeDistanceMatte', 'DISTANCE_MATTE', 'Distance Key'),
('CompositorNodeChromaMatte', 'CHROMA_MATTE', 'Chroma Key'),
('CompositorNodeColorMatte', 'COLOR_MATTE', 'Color Key'),
('CompositorNodeDoubleEdgeMask', 'DOUBLEEDGEMASK', 'Double Edge Mask'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_distort_nodes_props = (
('CompositorNodeScale', 'SCALE', 'Scale'),
('CompositorNodeLensdist', 'LENSDIST', 'Lens Distortion'),
('CompositorNodeMovieDistortion', 'MOVIEDISTORTION', 'Movie Distortion'),
('CompositorNodeTranslate', 'TRANSLATE', 'Translate'),
('CompositorNodeRotate', 'ROTATE', 'Rotate'),
('CompositorNodeFlip', 'FLIP', 'Flip'),
('CompositorNodeCrop', 'CROP', 'Crop'),
('CompositorNodeDisplace', 'DISPLACE', 'Displace'),
('CompositorNodeMapUV', 'MAP_UV', 'Map UV'),
('CompositorNodeTransform', 'TRANSFORM', 'Transform'),
('CompositorNodeStabilize', 'STABILIZE2D', 'Stabilize 2D'),
('CompositorNodePlaneTrackDeform', 'PLANETRACKDEFORM', 'Plane Track Deform'),
('CompositorNodeCornerPin', 'CORNERPIN', 'Corner Pin'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
compo_layout_nodes_props = (
('NodeFrame', 'FRAME', 'Frame'),
('NodeReroute', 'REROUTE', 'Reroute'),
('CompositorNodeSwitch', 'SWITCH', 'Switch'),
)
# Blender Render material nodes
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
blender_mat_input_nodes_props = (
('ShaderNodeMaterial', 'MATERIAL', 'Material'),
('ShaderNodeCameraData', 'CAMERA', 'Camera Data'),
('ShaderNodeLightData', 'LIGHT', 'Light Data'),
('ShaderNodeValue', 'VALUE', 'Value'),
('ShaderNodeRGB', 'RGB', 'RGB'),
('ShaderNodeTexture', 'TEXTURE', 'Texture'),
('ShaderNodeGeometry', 'GEOMETRY', 'Geometry'),
('ShaderNodeExtendedMaterial', 'MATERIAL_EXT', 'Extended Material'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
blender_mat_output_nodes_props = (
('ShaderNodeOutput', 'OUTPUT', 'Output'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
blender_mat_color_nodes_props = (
('ShaderNodeMixRGB', 'MIX_RGB', 'MixRGB'),
('ShaderNodeRGBCurve', 'CURVE_RGB', 'RGB Curves'),
('ShaderNodeInvert', 'INVERT', 'Invert'),
('ShaderNodeHueSaturation', 'HUE_SAT', 'Hue/Saturation'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
blender_mat_vector_nodes_props = (
('ShaderNodeNormal', 'NORMAL', 'Normal'),
('ShaderNodeMapping', 'MAPPING', 'Mapping'),
('ShaderNodeVectorCurve', 'CURVE_VEC', 'Vector Curves'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
blender_mat_converter_nodes_props = (
('ShaderNodeValToRGB', 'VALTORGB', 'ColorRamp'),
('ShaderNodeRGBToBW', 'RGBTOBW', 'RGB to BW'),
('ShaderNodeMath', 'MATH', 'Math'),
('ShaderNodeVectorMath', 'VECT_MATH', 'Vector Math'),
('ShaderNodeSqueeze', 'SQUEEZE', 'Squeeze Value'),
('ShaderNodeSeparateRGB', 'SEPRGB', 'Separate RGB'),
('ShaderNodeCombineRGB', 'COMBRGB', 'Combine RGB'),
('ShaderNodeSeparateHSV', 'SEPHSV', 'Separate HSV'),
('ShaderNodeCombineHSV', 'COMBHSV', 'Combine HSV'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
blender_mat_layout_nodes_props = (
('NodeReroute', 'REROUTE', 'Reroute'),
)
# Texture Nodes
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
texture_input_nodes_props = (
('TextureNodeCurveTime', 'CURVE_TIME', 'Curve Time'),
('TextureNodeCoordinates', 'COORD', 'Coordinates'),
('TextureNodeTexture', 'TEXTURE', 'Texture'),
('TextureNodeImage', 'IMAGE', 'Image'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
texture_output_nodes_props = (
('TextureNodeOutput', 'OUTPUT', 'Output'),
('TextureNodeViewer', 'VIEWER', 'Viewer'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
texture_color_nodes_props = (
('TextureNodeMixRGB', 'MIX_RGB', 'Mix RGB'),
('TextureNodeCurveRGB', 'CURVE_RGB', 'RGB Curves'),
('TextureNodeInvert', 'INVERT', 'Invert'),
('TextureNodeHueSaturation', 'HUE_SAT', 'Hue/Saturation'),
('TextureNodeCompose', 'COMPOSE', 'Combine RGBA'),
('TextureNodeDecompose', 'DECOMPOSE', 'Separate RGBA'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
texture_pattern_nodes_props = (
('TextureNodeChecker', 'CHECKER', 'Checker'),
('TextureNodeBricks', 'BRICKS', 'Bricks'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
texture_textures_nodes_props = (
('TextureNodeTexNoise', 'TEX_NOISE', 'Noise'),
('TextureNodeTexDistNoise', 'TEX_DISTNOISE', 'Distorted Noise'),
('TextureNodeTexClouds', 'TEX_CLOUDS', 'Clouds'),
('TextureNodeTexBlend', 'TEX_BLEND', 'Blend'),
('TextureNodeTexVoronoi', 'TEX_VORONOI', 'Voronoi'),
('TextureNodeTexMagic', 'TEX_MAGIC', 'Magic'),
('TextureNodeTexMarble', 'TEX_MARBLE', 'Marble'),
('TextureNodeTexWood', 'TEX_WOOD', 'Wood'),
('TextureNodeTexMusgrave', 'TEX_MUSGRAVE', 'Musgrave'),
('TextureNodeTexStucci', 'TEX_STUCCI', 'Stucci'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
texture_converter_nodes_props = (
('TextureNodeMath', 'MATH', 'Math'),
('TextureNodeValToRGB', 'VALTORGB', 'ColorRamp'),
('TextureNodeRGBToBW', 'RGBTOBW', 'RGB to BW'),
('TextureNodeValToNor', 'VALTONOR', 'Value to Normal'),
('TextureNodeDistance', 'DISTANCE', 'Distance'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
texture_distort_nodes_props = (
('TextureNodeScale', 'SCALE', 'Scale'),
('TextureNodeTranslate', 'TRANSLATE', 'Translate'),
('TextureNodeRotate', 'ROTATE', 'Rotate'),
('TextureNodeAt', 'AT', 'At'),
)
# (rna_type.identifier, type, rna_type.name)
# Keeping mixed case to avoid having to translate entries when adding new nodes in operators.
texture_layout_nodes_props = (
('NodeReroute', 'REROUTE', 'Reroute'),
)
# list of blend types of "Mix" nodes in a form that can be used as 'items' for EnumProperty.
# used list, not tuple for easy merging with other lists.
blend_types = [
('MIX', 'Mix', 'Mix Mode'),
('ADD', 'Add', 'Add Mode'),
('MULTIPLY', 'Multiply', 'Multiply Mode'),
('SUBTRACT', 'Subtract', 'Subtract Mode'),
('SCREEN', 'Screen', 'Screen Mode'),
('DIVIDE', 'Divide', 'Divide Mode'),
('DIFFERENCE', 'Difference', 'Difference Mode'),
('DARKEN', 'Darken', 'Darken Mode'),
('LIGHTEN', 'Lighten', 'Lighten Mode'),
('OVERLAY', 'Overlay', 'Overlay Mode'),
('DODGE', 'Dodge', 'Dodge Mode'),
('BURN', 'Burn', 'Burn Mode'),
('HUE', 'Hue', 'Hue Mode'),
('SATURATION', 'Saturation', 'Saturation Mode'),
('VALUE', 'Value', 'Value Mode'),
('COLOR', 'Color', 'Color Mode'),
('SOFT_LIGHT', 'Soft Light', 'Soft Light Mode'),
('LINEAR_LIGHT', 'Linear Light', 'Linear Light Mode'),
]
# list of operations of "Math" nodes in a form that can be used as 'items' for EnumProperty.
# used list, not tuple for easy merging with other lists.
operations = [
('ADD', 'Add', 'Add Mode'),
('SUBTRACT', 'Subtract', 'Subtract Mode'),
('MULTIPLY', 'Multiply', 'Multiply Mode'),
('DIVIDE', 'Divide', 'Divide Mode'),
('SINE', 'Sine', 'Sine Mode'),
('COSINE', 'Cosine', 'Cosine Mode'),
('TANGENT', 'Tangent', 'Tangent Mode'),
('ARCSINE', 'Arcsine', 'Arcsine Mode'),
('ARCCOSINE', 'Arccosine', 'Arccosine Mode'),
('ARCTANGENT', 'Arctangent', 'Arctangent Mode'),
('POWER', 'Power', 'Power Mode'),
('LOGARITHM', 'Logatithm', 'Logarithm Mode'),
('MINIMUM', 'Minimum', 'Minimum Mode'),
('MAXIMUM', 'Maximum', 'Maximum Mode'),
('ROUND', 'Round', 'Round Mode'),
('LESS_THAN', 'Less Than', 'Less Than Mode'),
('GREATER_THAN', 'Greater Than', 'Greater Than Mode'),
('MODULO', 'Modulo', 'Modulo Mode'),
('ABSOLUTE', 'Absolute', 'Absolute Mode'),
]
# in NWBatchChangeNodes additional types/operations. Can be used as 'items' for EnumProperty.
# used list, not tuple for easy merging with other lists.
navs = [
('CURRENT', 'Current', 'Leave at current state'),
('NEXT', 'Next', 'Next blend type/operation'),
('PREV', 'Prev', 'Previous blend type/operation'),
]
draw_color_sets = {
"red_white": (
(1.0, 1.0, 1.0, 0.7),
(1.0, 0.0, 0.0, 0.7),
(0.8, 0.2, 0.2, 1.0)
),
"green": (
(0.0, 0.0, 0.0, 1.0),
(0.38, 0.77, 0.38, 1.0),
(0.38, 0.77, 0.38, 1.0)
),
"yellow": (
(0.0, 0.0, 0.0, 1.0),
(0.77, 0.77, 0.16, 1.0),
(0.77, 0.77, 0.16, 1.0)
),
"purple": (
(0.0, 0.0, 0.0, 1.0),
(0.38, 0.38, 0.77, 1.0),
(0.38, 0.38, 0.77, 1.0)
),
"grey": (
(0.0, 0.0, 0.0, 1.0),
(0.63, 0.63, 0.63, 1.0),
(0.63, 0.63, 0.63, 1.0)
),
"black": (
(1.0, 1.0, 1.0, 0.7),
(0.0, 0.0, 0.0, 0.7),
(0.2, 0.2, 0.2, 1.0)
)
}
def is_cycles_or_eevee(context):
return context.scene.render.engine in {'CYCLES', 'BLENDER_EEVEE'}
def nice_hotkey_name(punc):
# convert the ugly string name into the actual character
pairs = (
('LEFTMOUSE', "LMB"),
('MIDDLEMOUSE', "MMB"),
('RIGHTMOUSE', "RMB"),
('SELECTMOUSE', "Select"),
('WHEELUPMOUSE', "Wheel Up"),
('WHEELDOWNMOUSE', "Wheel Down"),
('WHEELINMOUSE', "Wheel In"),
('WHEELOUTMOUSE', "Wheel Out"),
('ZERO', "0"),
('ONE', "1"),
('TWO', "2"),
('THREE', "3"),
('FOUR', "4"),
('FIVE', "5"),
('SIX', "6"),
('SEVEN', "7"),
('EIGHT', "8"),
('NINE', "9"),
('OSKEY', "Super"),
('RET', "Enter"),
('LINE_FEED', "Enter"),
('SEMI_COLON', ";"),
('PERIOD', "."),
('COMMA', ","),
('QUOTE', '"'),
('MINUS', "-"),
('SLASH', "/"),
('BACK_SLASH', "\\"),
('EQUAL', "="),
('NUMPAD_1', "Numpad 1"),
('NUMPAD_2', "Numpad 2"),
('NUMPAD_3', "Numpad 3"),
('NUMPAD_4', "Numpad 4"),
('NUMPAD_5', "Numpad 5"),
('NUMPAD_6', "Numpad 6"),
('NUMPAD_7', "Numpad 7"),
('NUMPAD_8', "Numpad 8"),
('NUMPAD_9', "Numpad 9"),
('NUMPAD_0', "Numpad 0"),
('NUMPAD_PERIOD', "Numpad ."),
('NUMPAD_SLASH', "Numpad /"),
('NUMPAD_ASTERIX', "Numpad *"),
('NUMPAD_MINUS', "Numpad -"),
('NUMPAD_ENTER', "Numpad Enter"),
('NUMPAD_PLUS', "Numpad +"),
)
nice_punc = False
for (ugly, nice) in pairs:
if punc == ugly:
nice_punc = nice
break
if not nice_punc:
nice_punc = punc.replace("_", " ").title()
return nice_punc
def force_update(context):
context.space_data.node_tree.update_tag()
def dpifac():
prefs = bpy.context.user_preferences.system
return prefs.dpi * prefs.pixel_size / 72
def node_mid_pt(node, axis):
if axis == 'x':
d = node.location.x + (node.dimensions.x / 2)
elif axis == 'y':
d = node.location.y - (node.dimensions.y / 2)
else:
d = 0
return d
def autolink(node1, node2, links):
link_made = False
for outp in node1.outputs:
for inp in node2.inputs:
if not inp.is_linked and inp.name == outp.name:
link_made = True
links.new(outp, inp)
return True
for outp in node1.outputs:
for inp in node2.inputs:
if not inp.is_linked and inp.type == outp.type:
link_made = True
links.new(outp, inp)
return True
# force some connection even if the type doesn't match
for outp in node1.outputs:
for inp in node2.inputs:
if not inp.is_linked:
link_made = True
links.new(outp, inp)
return True
# even if no sockets are open, force one of matching type
for outp in node1.outputs:
for inp in node2.inputs:
if inp.type == outp.type:
link_made = True
links.new(outp, inp)
return True
# do something!
for outp in node1.outputs:
for inp in node2.inputs:
link_made = True
links.new(outp, inp)
return True
print("Could not make a link from " + node1.name + " to " + node2.name)
return link_made
def node_at_pos(nodes, context, event):
nodes_near_mouse = []
nodes_under_mouse = []
target_node = None
store_mouse_cursor(context, event)
x, y = context.space_data.cursor_location
x = x
y = y
# Make a list of each corner (and middle of border) for each node.
# Will be sorted to find nearest point and thus nearest node
node_points_with_dist = []
for node in nodes:
skipnode = False
if node.type != 'FRAME': # no point trying to link to a frame node
locx = node.location.x
locy = node.location.y
dimx = node.dimensions.x/dpifac()
dimy = node.dimensions.y/dpifac()
if node.parent:
locx += node.parent.location.x
locy += node.parent.location.y
if node.parent.parent:
locx += node.parent.parent.location.x
locy += node.parent.parent.location.y
if node.parent.parent.parent:
locx += node.parent.parent.parent.location.x
locy += node.parent.parent.parent.location.y
if node.parent.parent.parent.parent:
# Support three levels or parenting
# There's got to be a better way to do this...
skipnode = True
if not skipnode:
node_points_with_dist.append([node, hypot(x - locx, y - locy)]) # Top Left
node_points_with_dist.append([node, hypot(x - (locx + dimx), y - locy)]) # Top Right
node_points_with_dist.append([node, hypot(x - locx, y - (locy - dimy))]) # Bottom Left
node_points_with_dist.append([node, hypot(x - (locx + dimx), y - (locy - dimy))]) # Bottom Right
node_points_with_dist.append([node, hypot(x - (locx + (dimx / 2)), y - locy)]) # Mid Top
node_points_with_dist.append([node, hypot(x - (locx + (dimx / 2)), y - (locy - dimy))]) # Mid Bottom
node_points_with_dist.append([node, hypot(x - locx, y - (locy - (dimy / 2)))]) # Mid Left
node_points_with_dist.append([node, hypot(x - (locx + dimx), y - (locy - (dimy / 2)))]) # Mid Right
nearest_node = sorted(node_points_with_dist, key=lambda k: k[1])[0][0]
for node in nodes:
if node.type != 'FRAME' and skipnode == False:
locx = node.location.x
locy = node.location.y
dimx = node.dimensions.x/dpifac()
dimy = node.dimensions.y/dpifac()
if node.parent:
locx += node.parent.location.x
locy += node.parent.location.y
if (locx <= x <= locx + dimx) and \
(locy - dimy <= y <= locy):
nodes_under_mouse.append(node)
if len(nodes_under_mouse) == 1:
if nodes_under_mouse[0] != nearest_node:
target_node = nodes_under_mouse[0] # use the node under the mouse if there is one and only one
else:
target_node = nearest_node # else use the nearest node
else:
target_node = nearest_node
return target_node
def store_mouse_cursor(context, event):
space = context.space_data
v2d = context.region.view2d
tree = space.edit_tree
# convert mouse position to the View2D for later node placement
if context.region.type == 'WINDOW':
space.cursor_location_from_region(event.mouse_region_x, event.mouse_region_y)
else:
space.cursor_location = tree.view_center
def draw_line(x1, y1, x2, y2, size, colour=[1.0, 1.0, 1.0, 0.7]):
shademodel_state = bgl.Buffer(bgl.GL_INT, 1)
bgl.glGetIntegerv(bgl.GL_SHADE_MODEL, shademodel_state)
bgl.glEnable(bgl.GL_BLEND)
bgl.glLineWidth(size * dpifac())
bgl.glShadeModel(bgl.GL_SMOOTH)
bgl.glEnable(bgl.GL_LINE_SMOOTH)
bgl.glBegin(bgl.GL_LINE_STRIP)
try:
bgl.glColor4f(colour[0]+(1.0-colour[0])/4, colour[1]+(1.0-colour[1])/4, colour[2]+(1.0-colour[2])/4, colour[3]+(1.0-colour[3])/4)
bgl.glVertex2f(x1, y1)
bgl.glColor4f(colour[0], colour[1], colour[2], colour[3])
bgl.glVertex2f(x2, y2)
except:
pass
bgl.glEnd()
bgl.glShadeModel(shademodel_state[0])
bgl.glDisable(bgl.GL_LINE_SMOOTH)
def draw_circle(mx, my, radius, colour=[1.0, 1.0, 1.0, 0.7]):
bgl.glEnable(bgl.GL_LINE_SMOOTH)
bgl.glBegin(bgl.GL_TRIANGLE_FAN)
bgl.glColor4f(colour[0], colour[1], colour[2], colour[3])
radius = radius * dpifac()
sides = 12
for i in range(sides + 1):
cosine = radius * cos(i * 2 * pi / sides) + mx
sine = radius * sin(i * 2 * pi / sides) + my
bgl.glVertex2f(cosine, sine)
bgl.glEnd()
bgl.glDisable(bgl.GL_LINE_SMOOTH)
def draw_rounded_node_border(node, radius=8, colour=[1.0, 1.0, 1.0, 0.7]):
bgl.glEnable(bgl.GL_BLEND)
bgl.glEnable(bgl.GL_LINE_SMOOTH)
area_width = bpy.context.area.width - (16*dpifac()) - 1
bottom_bar = (16*dpifac()) + 1
sides = 16
radius = radius*dpifac()
bgl.glColor4f(colour[0], colour[1], colour[2], colour[3])
nlocx = (node.location.x+1)*dpifac()
nlocy = (node.location.y+1)*dpifac()
ndimx = node.dimensions.x
ndimy = node.dimensions.y
# This is a stupid way to do this... TODO use while loop
if node.parent:
nlocx += node.parent.location.x
nlocy += node.parent.location.y
if node.parent.parent:
nlocx += node.parent.parent.location.x
nlocy += node.parent.parent.location.y
if node.parent.parent.parent:
nlocx += node.parent.parent.parent.location.x
nlocy += node.parent.parent.parent.location.y
if node.hide:
nlocx += -1
nlocy += 5
if node.type == 'REROUTE':
#nlocx += 1
nlocy -= 1
ndimx = 0
ndimy = 0
radius += 6
# Top left corner
bgl.glBegin(bgl.GL_TRIANGLE_FAN)
mx, my = bpy.context.region.view2d.view_to_region(nlocx, nlocy, clip=False)
bgl.glVertex2f(mx,my)
for i in range(sides+1):
if (4<=i<=8):
if my > bottom_bar and mx < area_width:
cosine = radius * cos(i * 2 * pi / sides) + mx
sine = radius * sin(i * 2 * pi / sides) + my
bgl.glVertex2f(cosine, sine)
bgl.glEnd()
# Top right corner
bgl.glBegin(bgl.GL_TRIANGLE_FAN)
mx, my = bpy.context.region.view2d.view_to_region(nlocx + ndimx, nlocy, clip=False)
bgl.glVertex2f(mx,my)
for i in range(sides+1):
if (0<=i<=4):
if my > bottom_bar and mx < area_width:
cosine = radius * cos(i * 2 * pi / sides) + mx
sine = radius * sin(i * 2 * pi / sides) + my
bgl.glVertex2f(cosine, sine)
bgl.glEnd()
# Bottom left corner
bgl.glBegin(bgl.GL_TRIANGLE_FAN)
mx, my = bpy.context.region.view2d.view_to_region(nlocx, nlocy - ndimy, clip=False)
bgl.glVertex2f(mx,my)
for i in range(sides+1):
if (8<=i<=12):
if my > bottom_bar and mx < area_width:
cosine = radius * cos(i * 2 * pi / sides) + mx
sine = radius * sin(i * 2 * pi / sides) + my
bgl.glVertex2f(cosine, sine)
bgl.glEnd()
# Bottom right corner
bgl.glBegin(bgl.GL_TRIANGLE_FAN)
mx, my = bpy.context.region.view2d.view_to_region(nlocx + ndimx, nlocy - ndimy, clip=False)
bgl.glVertex2f(mx,my)
for i in range(sides+1):
if (12<=i<=16):
if my > bottom_bar and mx < area_width:
cosine = radius * cos(i * 2 * pi / sides) + mx
sine = radius * sin(i * 2 * pi / sides) + my
bgl.glVertex2f(cosine, sine)
bgl.glEnd()
# Left edge
bgl.glBegin(bgl.GL_QUADS)
m1x, m1y = bpy.context.region.view2d.view_to_region(nlocx, nlocy, clip=False)
m2x, m2y = bpy.context.region.view2d.view_to_region(nlocx, nlocy - ndimy, clip=False)
m1y = max(m1y, bottom_bar)
m2y = max(m2y, bottom_bar)
if m1x < area_width and m2x < area_width:
bgl.glVertex2f(m2x-radius,m2y) # draw order is important, start with bottom left and go anti-clockwise
bgl.glVertex2f(m2x,m2y)
bgl.glVertex2f(m1x,m1y)
bgl.glVertex2f(m1x-radius,m1y)
bgl.glEnd()
# Top edge
bgl.glBegin(bgl.GL_QUADS)
m1x, m1y = bpy.context.region.view2d.view_to_region(nlocx, nlocy, clip=False)
m2x, m2y = bpy.context.region.view2d.view_to_region(nlocx + ndimx, nlocy, clip=False)
m1x = min(m1x, area_width)
m2x = min(m2x, area_width)
if m1y > bottom_bar and m2y > bottom_bar:
bgl.glVertex2f(m1x,m2y) # draw order is important, start with bottom left and go anti-clockwise
bgl.glVertex2f(m2x,m2y)
bgl.glVertex2f(m2x,m1y+radius)
bgl.glVertex2f(m1x,m1y+radius)
bgl.glEnd()
# Right edge
bgl.glBegin(bgl.GL_QUADS)
m1x, m1y = bpy.context.region.view2d.view_to_region(nlocx + ndimx, nlocy, clip=False)
m2x, m2y = bpy.context.region.view2d.view_to_region(nlocx + ndimx, nlocy - ndimy, clip=False)
m1y = max(m1y, bottom_bar)
m2y = max(m2y, bottom_bar)
if m1x < area_width and m2x < area_width:
bgl.glVertex2f(m2x,m2y) # draw order is important, start with bottom left and go anti-clockwise
bgl.glVertex2f(m2x+radius,m2y)
bgl.glVertex2f(m1x+radius,m1y)
bgl.glVertex2f(m1x,m1y)
bgl.glEnd()
# Bottom edge
bgl.glBegin(bgl.GL_QUADS)
m1x, m1y = bpy.context.region.view2d.view_to_region(nlocx, nlocy-ndimy, clip=False)
m2x, m2y = bpy.context.region.view2d.view_to_region(nlocx + ndimx, nlocy-ndimy, clip=False)
m1x = min(m1x, area_width)
m2x = min(m2x, area_width)
if m1y > bottom_bar and m2y > bottom_bar:
bgl.glVertex2f(m1x,m2y) # draw order is important, start with bottom left and go anti-clockwise
bgl.glVertex2f(m2x,m2y)
bgl.glVertex2f(m2x,m1y-radius)
bgl.glVertex2f(m1x,m1y-radius)
bgl.glEnd()
# Restore defaults
bgl.glDisable(bgl.GL_BLEND)
bgl.glDisable(bgl.GL_LINE_SMOOTH)
def draw_callback_nodeoutline(self, context, mode):
if self.mouse_path:
nodes, links = get_nodes_links(context)
bgl.glEnable(bgl.GL_LINE_SMOOTH)
if mode == "LINK":
col_outer = [1.0, 0.2, 0.2, 0.4]
col_inner = [0.0, 0.0, 0.0, 0.5]
col_circle_inner = [0.3, 0.05, 0.05, 1.0]
elif mode == "LINKMENU":
col_outer = [0.4, 0.6, 1.0, 0.4]
col_inner = [0.0, 0.0, 0.0, 0.5]
col_circle_inner = [0.08, 0.15, .3, 1.0]
elif mode == "MIX":
col_outer = [0.2, 1.0, 0.2, 0.4]
col_inner = [0.0, 0.0, 0.0, 0.5]
col_circle_inner = [0.05, 0.3, 0.05, 1.0]
m1x = self.mouse_path[0][0]
m1y = self.mouse_path[0][1]
m2x = self.mouse_path[-1][0]
m2y = self.mouse_path[-1][1]
n1 = nodes[context.scene.NWLazySource]
n2 = nodes[context.scene.NWLazyTarget]
if n1 == n2:
col_outer = [0.4, 0.4, 0.4, 0.4]
col_inner = [0.0, 0.0, 0.0, 0.5]
col_circle_inner = [0.2, 0.2, 0.2, 1.0]
draw_rounded_node_border(n1, radius=6, colour=col_outer) # outline
draw_rounded_node_border(n1, radius=5, colour=col_inner) # inner
draw_rounded_node_border(n2, radius=6, colour=col_outer) # outline
draw_rounded_node_border(n2, radius=5, colour=col_inner) # inner
draw_line(m1x, m1y, m2x, m2y, 5, col_outer) # line outline
draw_line(m1x, m1y, m2x, m2y, 2, col_inner) # line inner
# circle outline
draw_circle(m1x, m1y, 7, col_outer)
draw_circle(m2x, m2y, 7, col_outer)
# circle inner
draw_circle(m1x, m1y, 5, col_circle_inner)
draw_circle(m2x, m2y, 5, col_circle_inner)
# restore opengl defaults
bgl.glLineWidth(1)
bgl.glDisable(bgl.GL_BLEND)
bgl.glColor4f(0.0, 0.0, 0.0, 1.0)
bgl.glDisable(bgl.GL_LINE_SMOOTH)
def get_nodes_links(context):
tree = context.space_data.node_tree
# Get nodes from currently edited tree.
# If user is editing a group, space_data.node_tree is still the base level (outside group).
# context.active_node is in the group though, so if space_data.node_tree.nodes.active is not
# the same as context.active_node, the user is in a group.
# Check recursively until we find the real active node_tree:
if tree.nodes.active:
while tree.nodes.active != context.active_node: