NodeTree(ID)

Poll Function

The NodeTree.poll function determines if a node tree is visible in the given context (similar to how Panel.poll and Menu.poll define visibility). If it returns False, the node tree type will not be selectable in the node editor.

A typical condition for shader nodes would be to check the active render engine of the scene and only show nodes of the renderer they are designed for.

import bpy


class CyclesNodeTree(bpy.types.NodeTree):
    """ This operator is only visible when Cycles is the selected render engine"""
    bl_label = "Cycles Node Tree"
    bl_icon = 'NONE'

    @classmethod
    def poll(cls, context):
        return context.scene.render.engine == 'CYCLES'


bpy.utils.register_class(CyclesNodeTree)

base classes — bpy_struct, ID

subclasses — CompositorNodeTree, GeometryNodeTree, ShaderNodeTree, TextureNodeTree

class bpy.types.NodeTree(ID)

Node tree consisting of linked nodes used for shading, textures and compositing

active_input

Index of the active input

Type

int in [0, inf], default 0

active_output

Index of the active output

Type

int in [0, inf], default 0

animation_data

Animation data for this data-block

Type

AnimData, (readonly)

bl_description

Type

string, default “”, (never None)

bl_icon

The node tree icon

Type

enum in [‘NONE’, ‘QUESTION’, ‘ERROR’, ‘CANCEL’, ‘TRIA_RIGHT’, ‘TRIA_DOWN’, ‘TRIA_LEFT’, ‘TRIA_UP’, ‘ARROW_LEFTRIGHT’, ‘PLUS’, ‘DISCLOSURE_TRI_RIGHT’, ‘DISCLOSURE_TRI_DOWN’, ‘RADIOBUT_OFF’, ‘RADIOBUT_ON’, ‘MENU_PANEL’, ‘BLENDER’, ‘GRIP’, ‘DOT’, ‘COLLAPSEMENU’, ‘X’, ‘DUPLICATE’, ‘TRASH’, ‘COLLECTION_NEW’, ‘OPTIONS’, ‘NODE’, ‘NODE_SEL’, ‘WINDOW’, ‘WORKSPACE’, ‘RIGHTARROW_THIN’, ‘BORDERMOVE’, ‘VIEWZOOM’, ‘ADD’, ‘REMOVE’, ‘PANEL_CLOSE’, ‘COPY_ID’, ‘EYEDROPPER’, ‘CHECKMARK’, ‘AUTO’, ‘CHECKBOX_DEHLT’, ‘CHECKBOX_HLT’, ‘UNLOCKED’, ‘LOCKED’, ‘UNPINNED’, ‘PINNED’, ‘SCREEN_BACK’, ‘RIGHTARROW’, ‘DOWNARROW_HLT’, ‘FCURVE_SNAPSHOT’, ‘OBJECT_HIDDEN’, ‘TOPBAR’, ‘STATUSBAR’, ‘PLUGIN’, ‘HELP’, ‘GHOST_ENABLED’, ‘COLOR’, ‘UNLINKED’, ‘LINKED’, ‘HAND’, ‘ZOOM_ALL’, ‘ZOOM_SELECTED’, ‘ZOOM_PREVIOUS’, ‘ZOOM_IN’, ‘ZOOM_OUT’, ‘DRIVER_DISTANCE’, ‘DRIVER_ROTATIONAL_DIFFERENCE’, ‘DRIVER_TRANSFORM’, ‘FREEZE’, ‘STYLUS_PRESSURE’, ‘GHOST_DISABLED’, ‘FILE_NEW’, ‘FILE_TICK’, ‘QUIT’, ‘URL’, ‘RECOVER_LAST’, ‘THREE_DOTS’, ‘FULLSCREEN_ENTER’, ‘FULLSCREEN_EXIT’, ‘BRUSHES_ALL’, ‘LIGHT’, ‘MATERIAL’, ‘TEXTURE’, ‘ANIM’, ‘WORLD’, ‘SCENE’, ‘OUTPUT’, ‘SCRIPT’, ‘PARTICLES’, ‘PHYSICS’, ‘SPEAKER’, ‘TOOL_SETTINGS’, ‘SHADERFX’, ‘MODIFIER’, ‘BLANK1’, ‘FAKE_USER_OFF’, ‘FAKE_USER_ON’, ‘VIEW3D’, ‘GRAPH’, ‘OUTLINER’, ‘PROPERTIES’, ‘FILEBROWSER’, ‘IMAGE’, ‘INFO’, ‘SEQUENCE’, ‘TEXT’, ‘SPREADSHEET’, ‘SOUND’, ‘ACTION’, ‘NLA’, ‘PREFERENCES’, ‘TIME’, ‘NODETREE’, ‘LOGIC’, ‘CONSOLE’, ‘TRACKER’, ‘ASSET_MANAGER’, ‘NODE_COMPOSITING’, ‘NODE_TEXTURE’, ‘NODE_MATERIAL’, ‘UV’, ‘OBJECT_DATAMODE’, ‘EDITMODE_HLT’, ‘UV_DATA’, ‘VPAINT_HLT’, ‘TPAINT_HLT’, ‘WPAINT_HLT’, ‘SCULPTMODE_HLT’, ‘POSE_HLT’, ‘PARTICLEMODE’, ‘TRACKING’, ‘TRACKING_BACKWARDS’, ‘TRACKING_FORWARDS’, ‘TRACKING_BACKWARDS_SINGLE’, ‘TRACKING_FORWARDS_SINGLE’, ‘TRACKING_CLEAR_BACKWARDS’, ‘TRACKING_CLEAR_FORWARDS’, ‘TRACKING_REFINE_BACKWARDS’, ‘TRACKING_REFINE_FORWARDS’, ‘SCENE_DATA’, ‘RENDERLAYERS’, ‘WORLD_DATA’, ‘OBJECT_DATA’, ‘MESH_DATA’, ‘CURVE_DATA’, ‘META_DATA’, ‘LATTICE_DATA’, ‘LIGHT_DATA’, ‘MATERIAL_DATA’, ‘TEXTURE_DATA’, ‘ANIM_DATA’, ‘CAMERA_DATA’, ‘PARTICLE_DATA’, ‘LIBRARY_DATA_DIRECT’, ‘GROUP’, ‘ARMATURE_DATA’, ‘COMMUNITY’, ‘BONE_DATA’, ‘CONSTRAINT’, ‘SHAPEKEY_DATA’, ‘CONSTRAINT_BONE’, ‘CAMERA_STEREO’, ‘PACKAGE’, ‘UGLYPACKAGE’, ‘EXPERIMENTAL’, ‘BRUSH_DATA’, ‘IMAGE_DATA’, ‘FILE’, ‘FCURVE’, ‘FONT_DATA’, ‘RENDER_RESULT’, ‘SURFACE_DATA’, ‘EMPTY_DATA’, ‘PRESET’, ‘RENDER_ANIMATION’, ‘RENDER_STILL’, ‘LIBRARY_DATA_BROKEN’, ‘BOIDS’, ‘STRANDS’, ‘LIBRARY_DATA_INDIRECT’, ‘GREASEPENCIL’, ‘LINE_DATA’, ‘LIBRARY_DATA_OVERRIDE’, ‘GROUP_BONE’, ‘GROUP_VERTEX’, ‘GROUP_VCOL’, ‘GROUP_UVS’, ‘FACE_MAPS’, ‘RNA’, ‘RNA_ADD’, ‘MOUSE_LMB’, ‘MOUSE_MMB’, ‘MOUSE_RMB’, ‘MOUSE_MOVE’, ‘MOUSE_LMB_DRAG’, ‘MOUSE_MMB_DRAG’, ‘MOUSE_RMB_DRAG’, ‘MEMORY’, ‘PRESET_NEW’, ‘DECORATE’, ‘DECORATE_KEYFRAME’, ‘DECORATE_ANIMATE’, ‘DECORATE_DRIVER’, ‘DECORATE_LINKED’, ‘DECORATE_LIBRARY_OVERRIDE’, ‘DECORATE_UNLOCKED’, ‘DECORATE_LOCKED’, ‘DECORATE_OVERRIDE’, ‘FUND’, ‘TRACKER_DATA’, ‘HEART’, ‘ORPHAN_DATA’, ‘USER’, ‘SYSTEM’, ‘SETTINGS’, ‘OUTLINER_OB_EMPTY’, ‘OUTLINER_OB_MESH’, ‘OUTLINER_OB_CURVE’, ‘OUTLINER_OB_LATTICE’, ‘OUTLINER_OB_META’, ‘OUTLINER_OB_LIGHT’, ‘OUTLINER_OB_CAMERA’, ‘OUTLINER_OB_ARMATURE’, ‘OUTLINER_OB_FONT’, ‘OUTLINER_OB_SURFACE’, ‘OUTLINER_OB_SPEAKER’, ‘OUTLINER_OB_FORCE_FIELD’, ‘OUTLINER_OB_GROUP_INSTANCE’, ‘OUTLINER_OB_GREASEPENCIL’, ‘OUTLINER_OB_LIGHTPROBE’, ‘OUTLINER_OB_IMAGE’, ‘OUTLINER_COLLECTION’, ‘RESTRICT_COLOR_OFF’, ‘RESTRICT_COLOR_ON’, ‘HIDE_ON’, ‘HIDE_OFF’, ‘RESTRICT_SELECT_ON’, ‘RESTRICT_SELECT_OFF’, ‘RESTRICT_RENDER_ON’, ‘RESTRICT_RENDER_OFF’, ‘RESTRICT_INSTANCED_OFF’, ‘OUTLINER_DATA_EMPTY’, ‘OUTLINER_DATA_MESH’, ‘OUTLINER_DATA_CURVE’, ‘OUTLINER_DATA_LATTICE’, ‘OUTLINER_DATA_META’, ‘OUTLINER_DATA_LIGHT’, ‘OUTLINER_DATA_CAMERA’, ‘OUTLINER_DATA_ARMATURE’, ‘OUTLINER_DATA_FONT’, ‘OUTLINER_DATA_SURFACE’, ‘OUTLINER_DATA_SPEAKER’, ‘OUTLINER_DATA_LIGHTPROBE’, ‘OUTLINER_DATA_GP_LAYER’, ‘OUTLINER_DATA_GREASEPENCIL’, ‘GP_SELECT_POINTS’, ‘GP_SELECT_STROKES’, ‘GP_MULTIFRAME_EDITING’, ‘GP_ONLY_SELECTED’, ‘GP_SELECT_BETWEEN_STROKES’, ‘MODIFIER_OFF’, ‘MODIFIER_ON’, ‘ONIONSKIN_OFF’, ‘ONIONSKIN_ON’, ‘RESTRICT_VIEW_ON’, ‘RESTRICT_VIEW_OFF’, ‘RESTRICT_INSTANCED_ON’, ‘MESH_PLANE’, ‘MESH_CUBE’, ‘MESH_CIRCLE’, ‘MESH_UVSPHERE’, ‘MESH_ICOSPHERE’, ‘MESH_GRID’, ‘MESH_MONKEY’, ‘MESH_CYLINDER’, ‘MESH_TORUS’, ‘MESH_CONE’, ‘MESH_CAPSULE’, ‘EMPTY_SINGLE_ARROW’, ‘LIGHT_POINT’, ‘LIGHT_SUN’, ‘LIGHT_SPOT’, ‘LIGHT_HEMI’, ‘LIGHT_AREA’, ‘CUBE’, ‘SPHERE’, ‘CONE’, ‘META_PLANE’, ‘META_CUBE’, ‘META_BALL’, ‘META_ELLIPSOID’, ‘META_CAPSULE’, ‘SURFACE_NCURVE’, ‘SURFACE_NCIRCLE’, ‘SURFACE_NSURFACE’, ‘SURFACE_NCYLINDER’, ‘SURFACE_NSPHERE’, ‘SURFACE_NTORUS’, ‘EMPTY_AXIS’, ‘STROKE’, ‘EMPTY_ARROWS’, ‘CURVE_BEZCURVE’, ‘CURVE_BEZCIRCLE’, ‘CURVE_NCURVE’, ‘CURVE_NCIRCLE’, ‘CURVE_PATH’, ‘LIGHTPROBE_CUBEMAP’, ‘LIGHTPROBE_PLANAR’, ‘LIGHTPROBE_GRID’, ‘COLOR_RED’, ‘COLOR_GREEN’, ‘COLOR_BLUE’, ‘TRIA_RIGHT_BAR’, ‘TRIA_DOWN_BAR’, ‘TRIA_LEFT_BAR’, ‘TRIA_UP_BAR’, ‘FORCE_FORCE’, ‘FORCE_WIND’, ‘FORCE_VORTEX’, ‘FORCE_MAGNETIC’, ‘FORCE_HARMONIC’, ‘FORCE_CHARGE’, ‘FORCE_LENNARDJONES’, ‘FORCE_TEXTURE’, ‘FORCE_CURVE’, ‘FORCE_BOID’, ‘FORCE_TURBULENCE’, ‘FORCE_DRAG’, ‘FORCE_FLUIDFLOW’, ‘RIGID_BODY’, ‘RIGID_BODY_CONSTRAINT’, ‘IMAGE_PLANE’, ‘IMAGE_BACKGROUND’, ‘IMAGE_REFERENCE’, ‘NODE_INSERT_ON’, ‘NODE_INSERT_OFF’, ‘NODE_TOP’, ‘NODE_SIDE’, ‘NODE_CORNER’, ‘ANCHOR_TOP’, ‘ANCHOR_BOTTOM’, ‘ANCHOR_LEFT’, ‘ANCHOR_RIGHT’, ‘ANCHOR_CENTER’, ‘SELECT_SET’, ‘SELECT_EXTEND’, ‘SELECT_SUBTRACT’, ‘SELECT_INTERSECT’, ‘SELECT_DIFFERENCE’, ‘ALIGN_LEFT’, ‘ALIGN_CENTER’, ‘ALIGN_RIGHT’, ‘ALIGN_JUSTIFY’, ‘ALIGN_FLUSH’, ‘ALIGN_TOP’, ‘ALIGN_MIDDLE’, ‘ALIGN_BOTTOM’, ‘BOLD’, ‘ITALIC’, ‘UNDERLINE’, ‘SMALL_CAPS’, ‘CON_ACTION’, ‘MOD_LENGTH’, ‘MOD_DASH’, ‘MOD_LINEART’, ‘HOLDOUT_OFF’, ‘HOLDOUT_ON’, ‘INDIRECT_ONLY_OFF’, ‘INDIRECT_ONLY_ON’, ‘CON_CAMERASOLVER’, ‘CON_FOLLOWTRACK’, ‘CON_OBJECTSOLVER’, ‘CON_LOCLIKE’, ‘CON_ROTLIKE’, ‘CON_SIZELIKE’, ‘CON_TRANSLIKE’, ‘CON_DISTLIMIT’, ‘CON_LOCLIMIT’, ‘CON_ROTLIMIT’, ‘CON_SIZELIMIT’, ‘CON_SAMEVOL’, ‘CON_TRANSFORM’, ‘CON_TRANSFORM_CACHE’, ‘CON_CLAMPTO’, ‘CON_KINEMATIC’, ‘CON_LOCKTRACK’, ‘CON_SPLINEIK’, ‘CON_STRETCHTO’, ‘CON_TRACKTO’, ‘CON_ARMATURE’, ‘CON_CHILDOF’, ‘CON_FLOOR’, ‘CON_FOLLOWPATH’, ‘CON_PIVOT’, ‘CON_SHRINKWRAP’, ‘MODIFIER_DATA’, ‘MOD_WAVE’, ‘MOD_BUILD’, ‘MOD_DECIM’, ‘MOD_MIRROR’, ‘MOD_SOFT’, ‘MOD_SUBSURF’, ‘HOOK’, ‘MOD_PHYSICS’, ‘MOD_PARTICLES’, ‘MOD_BOOLEAN’, ‘MOD_EDGESPLIT’, ‘MOD_ARRAY’, ‘MOD_UVPROJECT’, ‘MOD_DISPLACE’, ‘MOD_CURVE’, ‘MOD_LATTICE’, ‘MOD_TINT’, ‘MOD_ARMATURE’, ‘MOD_SHRINKWRAP’, ‘MOD_CAST’, ‘MOD_MESHDEFORM’, ‘MOD_BEVEL’, ‘MOD_SMOOTH’, ‘MOD_SIMPLEDEFORM’, ‘MOD_MASK’, ‘MOD_CLOTH’, ‘MOD_EXPLODE’, ‘MOD_FLUIDSIM’, ‘MOD_MULTIRES’, ‘MOD_FLUID’, ‘MOD_SOLIDIFY’, ‘MOD_SCREW’, ‘MOD_VERTEX_WEIGHT’, ‘MOD_DYNAMICPAINT’, ‘MOD_REMESH’, ‘MOD_OCEAN’, ‘MOD_WARP’, ‘MOD_SKIN’, ‘MOD_TRIANGULATE’, ‘MOD_WIREFRAME’, ‘MOD_DATA_TRANSFER’, ‘MOD_NORMALEDIT’, ‘MOD_PARTICLE_INSTANCE’, ‘MOD_HUE_SATURATION’, ‘MOD_NOISE’, ‘MOD_OFFSET’, ‘MOD_SIMPLIFY’, ‘MOD_THICKNESS’, ‘MOD_INSTANCE’, ‘MOD_TIME’, ‘MOD_OPACITY’, ‘REC’, ‘PLAY’, ‘FF’, ‘REW’, ‘PAUSE’, ‘PREV_KEYFRAME’, ‘NEXT_KEYFRAME’, ‘PLAY_SOUND’, ‘PLAY_REVERSE’, ‘PREVIEW_RANGE’, ‘ACTION_TWEAK’, ‘PMARKER_ACT’, ‘PMARKER_SEL’, ‘PMARKER’, ‘MARKER_HLT’, ‘MARKER’, ‘KEYFRAME_HLT’, ‘KEYFRAME’, ‘KEYINGSET’, ‘KEY_DEHLT’, ‘KEY_HLT’, ‘MUTE_IPO_OFF’, ‘MUTE_IPO_ON’, ‘DRIVER’, ‘SOLO_OFF’, ‘SOLO_ON’, ‘FRAME_PREV’, ‘FRAME_NEXT’, ‘NLA_PUSHDOWN’, ‘IPO_CONSTANT’, ‘IPO_LINEAR’, ‘IPO_BEZIER’, ‘IPO_SINE’, ‘IPO_QUAD’, ‘IPO_CUBIC’, ‘IPO_QUART’, ‘IPO_QUINT’, ‘IPO_EXPO’, ‘IPO_CIRC’, ‘IPO_BOUNCE’, ‘IPO_ELASTIC’, ‘IPO_BACK’, ‘IPO_EASE_IN’, ‘IPO_EASE_OUT’, ‘IPO_EASE_IN_OUT’, ‘NORMALIZE_FCURVES’, ‘VERTEXSEL’, ‘EDGESEL’, ‘FACESEL’, ‘CURSOR’, ‘PIVOT_BOUNDBOX’, ‘PIVOT_CURSOR’, ‘PIVOT_INDIVIDUAL’, ‘PIVOT_MEDIAN’, ‘PIVOT_ACTIVE’, ‘CENTER_ONLY’, ‘ROOTCURVE’, ‘SMOOTHCURVE’, ‘SPHERECURVE’, ‘INVERSESQUARECURVE’, ‘SHARPCURVE’, ‘LINCURVE’, ‘NOCURVE’, ‘RNDCURVE’, ‘PROP_OFF’, ‘PROP_ON’, ‘PROP_CON’, ‘PROP_PROJECTED’, ‘PARTICLE_POINT’, ‘PARTICLE_TIP’, ‘PARTICLE_PATH’, ‘SNAP_FACE_CENTER’, ‘SNAP_PERPENDICULAR’, ‘SNAP_MIDPOINT’, ‘SNAP_OFF’, ‘SNAP_ON’, ‘SNAP_NORMAL’, ‘SNAP_GRID’, ‘SNAP_VERTEX’, ‘SNAP_EDGE’, ‘SNAP_FACE’, ‘SNAP_VOLUME’, ‘SNAP_INCREMENT’, ‘STICKY_UVS_LOC’, ‘STICKY_UVS_DISABLE’, ‘STICKY_UVS_VERT’, ‘CLIPUV_DEHLT’, ‘CLIPUV_HLT’, ‘SNAP_PEEL_OBJECT’, ‘GRID’, ‘OBJECT_ORIGIN’, ‘ORIENTATION_GLOBAL’, ‘ORIENTATION_GIMBAL’, ‘ORIENTATION_LOCAL’, ‘ORIENTATION_NORMAL’, ‘ORIENTATION_VIEW’, ‘COPYDOWN’, ‘PASTEDOWN’, ‘PASTEFLIPUP’, ‘PASTEFLIPDOWN’, ‘VIS_SEL_11’, ‘VIS_SEL_10’, ‘VIS_SEL_01’, ‘VIS_SEL_00’, ‘AUTOMERGE_OFF’, ‘AUTOMERGE_ON’, ‘UV_VERTEXSEL’, ‘UV_EDGESEL’, ‘UV_FACESEL’, ‘UV_ISLANDSEL’, ‘UV_SYNC_SELECT’, ‘GP_CAPS_FLAT’, ‘GP_CAPS_ROUND’, ‘FIXED_SIZE’, ‘TRANSFORM_ORIGINS’, ‘GIZMO’, ‘ORIENTATION_CURSOR’, ‘NORMALS_VERTEX’, ‘NORMALS_FACE’, ‘NORMALS_VERTEX_FACE’, ‘SHADING_BBOX’, ‘SHADING_WIRE’, ‘SHADING_SOLID’, ‘SHADING_RENDERED’, ‘SHADING_TEXTURE’, ‘OVERLAY’, ‘XRAY’, ‘LOCKVIEW_OFF’, ‘LOCKVIEW_ON’, ‘AXIS_SIDE’, ‘AXIS_FRONT’, ‘AXIS_TOP’, ‘LAYER_USED’, ‘LAYER_ACTIVE’, ‘OUTLINER_OB_HAIR’, ‘OUTLINER_DATA_HAIR’, ‘HAIR_DATA’, ‘OUTLINER_OB_POINTCLOUD’, ‘OUTLINER_DATA_POINTCLOUD’, ‘POINTCLOUD_DATA’, ‘OUTLINER_OB_VOLUME’, ‘OUTLINER_DATA_VOLUME’, ‘VOLUME_DATA’, ‘CURRENT_FILE’, ‘HOME’, ‘DOCUMENTS’, ‘TEMP’, ‘SORTALPHA’, ‘SORTBYEXT’, ‘SORTTIME’, ‘SORTSIZE’, ‘SHORTDISPLAY’, ‘LONGDISPLAY’, ‘IMGDISPLAY’, ‘BOOKMARKS’, ‘FONTPREVIEW’, ‘FILTER’, ‘NEWFOLDER’, ‘FOLDER_REDIRECT’, ‘FILE_PARENT’, ‘FILE_REFRESH’, ‘FILE_FOLDER’, ‘FILE_BLANK’, ‘FILE_BLEND’, ‘FILE_IMAGE’, ‘FILE_MOVIE’, ‘FILE_SCRIPT’, ‘FILE_SOUND’, ‘FILE_FONT’, ‘FILE_TEXT’, ‘SORT_DESC’, ‘SORT_ASC’, ‘LINK_BLEND’, ‘APPEND_BLEND’, ‘IMPORT’, ‘EXPORT’, ‘LOOP_BACK’, ‘LOOP_FORWARDS’, ‘BACK’, ‘FORWARD’, ‘FILE_ARCHIVE’, ‘FILE_CACHE’, ‘FILE_VOLUME’, ‘FILE_3D’, ‘FILE_HIDDEN’, ‘FILE_BACKUP’, ‘DISK_DRIVE’, ‘MATPLANE’, ‘MATSPHERE’, ‘MATCUBE’, ‘MONKEY’, ‘HAIR’, ‘ALIASED’, ‘ANTIALIASED’, ‘MAT_SPHERE_SKY’, ‘MATSHADERBALL’, ‘MATCLOTH’, ‘MATFLUID’, ‘WORDWRAP_OFF’, ‘WORDWRAP_ON’, ‘SYNTAX_OFF’, ‘SYNTAX_ON’, ‘LINENUMBERS_OFF’, ‘LINENUMBERS_ON’, ‘SCRIPTPLUGINS’, ‘DISC’, ‘DESKTOP’, ‘EXTERNAL_DRIVE’, ‘NETWORK_DRIVE’, ‘SEQ_SEQUENCER’, ‘SEQ_PREVIEW’, ‘SEQ_LUMA_WAVEFORM’, ‘SEQ_CHROMA_SCOPE’, ‘SEQ_HISTOGRAM’, ‘SEQ_SPLITVIEW’, ‘SEQ_STRIP_META’, ‘SEQ_STRIP_DUPLICATE’, ‘IMAGE_RGB’, ‘IMAGE_RGB_ALPHA’, ‘IMAGE_ALPHA’, ‘IMAGE_ZDEPTH’, ‘HANDLE_AUTOCLAMPED’, ‘HANDLE_AUTO’, ‘HANDLE_ALIGNED’, ‘HANDLE_VECTOR’, ‘HANDLE_FREE’, ‘VIEW_PERSPECTIVE’, ‘VIEW_ORTHO’, ‘VIEW_CAMERA’, ‘VIEW_PAN’, ‘VIEW_ZOOM’, ‘BRUSH_BLOB’, ‘BRUSH_BLUR’, ‘BRUSH_CLAY’, ‘BRUSH_CLAY_STRIPS’, ‘BRUSH_CLONE’, ‘BRUSH_CREASE’, ‘BRUSH_FILL’, ‘BRUSH_FLATTEN’, ‘BRUSH_GRAB’, ‘BRUSH_INFLATE’, ‘BRUSH_LAYER’, ‘BRUSH_MASK’, ‘BRUSH_MIX’, ‘BRUSH_NUDGE’, ‘BRUSH_PINCH’, ‘BRUSH_SCRAPE’, ‘BRUSH_SCULPT_DRAW’, ‘BRUSH_SMEAR’, ‘BRUSH_SMOOTH’, ‘BRUSH_SNAKE_HOOK’, ‘BRUSH_SOFTEN’, ‘BRUSH_TEXDRAW’, ‘BRUSH_TEXFILL’, ‘BRUSH_TEXMASK’, ‘BRUSH_THUMB’, ‘BRUSH_ROTATE’, ‘GPBRUSH_SMOOTH’, ‘GPBRUSH_THICKNESS’, ‘GPBRUSH_STRENGTH’, ‘GPBRUSH_GRAB’, ‘GPBRUSH_PUSH’, ‘GPBRUSH_TWIST’, ‘GPBRUSH_PINCH’, ‘GPBRUSH_RANDOMIZE’, ‘GPBRUSH_CLONE’, ‘GPBRUSH_WEIGHT’, ‘GPBRUSH_PENCIL’, ‘GPBRUSH_PEN’, ‘GPBRUSH_INK’, ‘GPBRUSH_INKNOISE’, ‘GPBRUSH_BLOCK’, ‘GPBRUSH_MARKER’, ‘GPBRUSH_FILL’, ‘GPBRUSH_AIRBRUSH’, ‘GPBRUSH_CHISEL’, ‘GPBRUSH_ERASE_SOFT’, ‘GPBRUSH_ERASE_HARD’, ‘GPBRUSH_ERASE_STROKE’, ‘KEYTYPE_KEYFRAME_VEC’, ‘KEYTYPE_BREAKDOWN_VEC’, ‘KEYTYPE_EXTREME_VEC’, ‘KEYTYPE_JITTER_VEC’, ‘KEYTYPE_MOVING_HOLD_VEC’, ‘HANDLETYPE_FREE_VEC’, ‘HANDLETYPE_ALIGNED_VEC’, ‘HANDLETYPE_VECTOR_VEC’, ‘HANDLETYPE_AUTO_VEC’, ‘HANDLETYPE_AUTO_CLAMP_VEC’, ‘COLORSET_01_VEC’, ‘COLORSET_02_VEC’, ‘COLORSET_03_VEC’, ‘COLORSET_04_VEC’, ‘COLORSET_05_VEC’, ‘COLORSET_06_VEC’, ‘COLORSET_07_VEC’, ‘COLORSET_08_VEC’, ‘COLORSET_09_VEC’, ‘COLORSET_10_VEC’, ‘COLORSET_11_VEC’, ‘COLORSET_12_VEC’, ‘COLORSET_13_VEC’, ‘COLORSET_14_VEC’, ‘COLORSET_15_VEC’, ‘COLORSET_16_VEC’, ‘COLORSET_17_VEC’, ‘COLORSET_18_VEC’, ‘COLORSET_19_VEC’, ‘COLORSET_20_VEC’, ‘COLLECTION_COLOR_01’, ‘COLLECTION_COLOR_02’, ‘COLLECTION_COLOR_03’, ‘COLLECTION_COLOR_04’, ‘COLLECTION_COLOR_05’, ‘COLLECTION_COLOR_06’, ‘COLLECTION_COLOR_07’, ‘COLLECTION_COLOR_08’, ‘SEQUENCE_COLOR_01’, ‘SEQUENCE_COLOR_02’, ‘SEQUENCE_COLOR_03’, ‘SEQUENCE_COLOR_04’, ‘SEQUENCE_COLOR_05’, ‘SEQUENCE_COLOR_06’, ‘SEQUENCE_COLOR_07’, ‘SEQUENCE_COLOR_08’, ‘SEQUENCE_COLOR_09’, ‘EVENT_A’, ‘EVENT_B’, ‘EVENT_C’, ‘EVENT_D’, ‘EVENT_E’, ‘EVENT_F’, ‘EVENT_G’, ‘EVENT_H’, ‘EVENT_I’, ‘EVENT_J’, ‘EVENT_K’, ‘EVENT_L’, ‘EVENT_M’, ‘EVENT_N’, ‘EVENT_O’, ‘EVENT_P’, ‘EVENT_Q’, ‘EVENT_R’, ‘EVENT_S’, ‘EVENT_T’, ‘EVENT_U’, ‘EVENT_V’, ‘EVENT_W’, ‘EVENT_X’, ‘EVENT_Y’, ‘EVENT_Z’, ‘EVENT_SHIFT’, ‘EVENT_CTRL’, ‘EVENT_ALT’, ‘EVENT_OS’, ‘EVENT_F1’, ‘EVENT_F2’, ‘EVENT_F3’, ‘EVENT_F4’, ‘EVENT_F5’, ‘EVENT_F6’, ‘EVENT_F7’, ‘EVENT_F8’, ‘EVENT_F9’, ‘EVENT_F10’, ‘EVENT_F11’, ‘EVENT_F12’, ‘EVENT_ESC’, ‘EVENT_TAB’, ‘EVENT_PAGEUP’, ‘EVENT_PAGEDOWN’, ‘EVENT_RETURN’, ‘EVENT_SPACEKEY’], default ‘NODETREE’

bl_idname

Type

string, default “”, (never None)

bl_label

The node tree label

Type

string, default “”, (never None)

grease_pencil

Grease Pencil data-block

Type

GreasePencil

inputs

Node tree inputs

Type

NodeTreeInputs bpy_prop_collection of NodeSocketInterface, (readonly)

links

Type

NodeLinks bpy_prop_collection of NodeLink, (readonly)

nodes

Type

Nodes bpy_prop_collection of Node, (readonly)

outputs

Node tree outputs

Type

NodeTreeOutputs bpy_prop_collection of NodeSocketInterface, (readonly)

type

Node Tree type (deprecated, bl_idname is the actual node tree type identifier)

• UNDEFINED Undefined – Undefined type of nodes (can happen e.g. when a linked node tree goes missing).

• SHADER Shader – Shader nodes.

• TEXTURE Texture – Texture nodes.

• COMPOSITING Compositing – Compositing nodes.

• GEOMETRY Geometry – Geometry nodes.

Type

enum in [‘UNDEFINED’, ‘SHADER’, ‘TEXTURE’, ‘COMPOSITING’, ‘GEOMETRY’], default ‘SHADER’, (readonly)

view_center

The current location (offset) of the view for this Node Tree

Type

float array of 2 items in [-inf, inf], default (0.0, 0.0), (readonly)

interface_update(context)

Updated node group interface

classmethod poll(context)

Check visibility in the editor

Return type

boolean

update()

Update on editor changes

classmethod get_from_context(context)

Get a node tree from the context

Return (result_1, result_2, result_3)

result_1, Active node tree from context, NodeTree

result_2, ID data-block that owns the node tree, ID

result_3, Original ID data-block selected from the context, ID

classmethod valid_socket_type(idname)

Check if the socket type is valid for the node tree

Parameters

idname (string, (never None)) – Socket Type, Identifier of the socket type

Return type

boolean

classmethod bl_rna_get_subclass(id, default=None)

Parameters

id (string) – The RNA type identifier.

Returns

The RNA type or default when not found.

Return type

bpy.types.Struct subclass

classmethod bl_rna_get_subclass_py(id, default=None)

Parameters

id (string) – The RNA type identifier.

Returns

The class or default when not found.

Return type

type

Inherited Properties

bpy_struct.id_data ID.name ID.name_full ID.is_evaluated ID.original ID.users ID.use_fake_user ID.is_embedded_data

ID.tag ID.is_library_indirect ID.library ID.library_weak_reference ID.asset_data ID.override_library ID.preview

Inherited Functions

bpy_struct.as_pointer bpy_struct.driver_add bpy_struct.driver_remove bpy_struct.get bpy_struct.id_properties_clear bpy_struct.id_properties_ensure bpy_struct.id_properties_ui bpy_struct.is_property_hidden bpy_struct.is_property_overridable_library bpy_struct.is_property_readonly bpy_struct.is_property_set bpy_struct.items bpy_struct.keyframe_delete bpy_struct.keyframe_insert bpy_struct.keys bpy_struct.path_from_id bpy_struct.path_resolve bpy_struct.pop bpy_struct.property_overridable_library_set bpy_struct.property_unset

bpy_struct.type_recast bpy_struct.values ID.evaluated_get ID.copy ID.asset_mark ID.asset_clear ID.asset_generate_preview ID.override_create ID.override_hierarchy_create ID.override_template_create ID.user_clear ID.user_remap ID.make_local ID.user_of_id ID.animation_data_create ID.animation_data_clear ID.update_tag ID.preview_ensure ID.bl_rna_get_subclass ID.bl_rna_get_subclass_py

References

BlendData.node_groups BlendDataNodeTrees.new BlendDataNodeTrees.remove CompositorNodeCustomGroup.node_tree CompositorNodeGroup.node_tree FreestyleLineStyle.node_tree GeometryNodeCustomGroup.node_tree GeometryNodeGroup.node_tree Light.node_tree Material.node_tree Node.poll Node.poll_instance NodeCustomGroup.node_tree NodeGroup.node_tree NodeInternal.poll NodeInternal.poll_instance NodeTree.get_from_context

NodeTreePath.node_tree NodesModifier.node_group ProxyNodeTreeProperty.value Scene.node_tree ShaderNodeCustomGroup.node_tree ShaderNodeGroup.node_tree Simulation.node_tree SpaceNodeEditor.edit_tree SpaceNodeEditor.node_tree SpaceNodeEditorPath.append SpaceNodeEditorPath.start Texture.node_tree TextureNodeGroup.node_tree UILayout.template_node_link UILayout.template_node_view World.node_tree