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Brushstroke Tools: Initial Version #328

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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
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# Brushstroke Tools
Set of tools for a painterly brushstroke stylization workflow of 3D assets developed by the Blender Studio
## Getting Started
- UI navigation
- draw modes
- surface fill
- surface draw
- flow curves
- draw tool
- color options
## Advanced Functionality
- stable surface deformation
- animated drawing/flow
## Customization Options
### Material
- add more FX layers
- replace surface shader
### Brush Texture
- atlas setup
- node-group setup
- default file integration

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from . import utils, icons, settings, preferences, ui, draw_tool, ops
import tomllib as toml
import bpy
modules = [utils, icons, settings, preferences, ui, draw_tool, ops]
def register():
# register modules
for m in modules:
m.register()
# read addon meta-data
with open(f"{utils.get_addon_directory()}/blender_manifest.toml", 'rb') as f:
manifest = toml.load(f)
utils.addon_version = tuple([int(i) for i in manifest['version'].split('.')])
# Add addon asset library
utils.register_asset_lib()
# Get available brush styles
#utils.refresh_brushstroke_styles()
def unregister():
# un-register modules
for m in reversed(modules):
m.unregister()
# Remove addon asset library
utils.unregister_asset_lib()

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# This is an Asset Catalog Definition file for Blender.
#
# Empty lines and lines starting with `#` will be ignored.
# The first non-ignored line should be the version indicator.
# Other lines are of the format "UUID:catalog/path/for/assets:simple catalog name"
VERSION 1
39d602da-9c11-471c-a99f-996e474e8e9a:Edge:Edge
4cee84fd-9d34-4ad1-b8f0-a6369e473f0d:Face:Face

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schema_version = "1.0.0"
id = "brushstroke_tools"
version = "1.0.1"
name = "Brushstroke Tools"
tagline = "Brushstroke painting tools by the Blender Studio"
maintainer = "Simon Thommes <simon@blender.org>"
type = "add-on"
# Optional link to documentation, support, source files, etc
# website = "https://studio.blender.org/tools/addons/brushstroke_tools"
# Optional list defined by Blender and server, see:
# https://docs.blender.org/manual/en/dev/advanced/extensions/tags.html
tags = ["Geometry Nodes", "Grease Pencil", "Node", ]
blender_version_min = "4.2.0"
# License conforming to https://spdx.org/licenses/ (use "SPDX: prefix)
# https://docs.blender.org/manual/en/dev/advanced/extensions/licenses.html
license = [
"SPDX:GPL-3.0-or-later",
]
# Optional: required by some licenses.
# copyright = [
# "2024 Blender Foundation",
# ]
# [permissions]
# files = "Read/write brushstroke asset resources from/to disk"

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scripts-blender/addons/brushstroke_tools/draw_tool.py Normal file
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import bpy
from . import utils
from mathutils import Vector
from bpy.types import WorkSpaceTool
def preserve_draw_settings(context, restore=False):
props_list = ['curve_type',
'depth_mode',
'use_pressure_radius',
'use_project_only_selected',
'radius_taper_start',
'radius_taper_end',
'radius_min',
'radius_max',
'surface_offset',
'use_offset_absolute',
'use_stroke_endpoints',]
if restore:
draw_settings_dict = context.scene['BSBST-TMP-draw_settings_dict']
for k, v in draw_settings_dict.items():
setattr(context.tool_settings.curve_paint_settings, k, v)
del context.scene['BSBST-TMP-draw_settings_dict']
else:
draw_settings_dict = dict()
for item in props_list:
draw_settings_dict[item] = getattr(context.tool_settings.curve_paint_settings, item)
context.scene['BSBST-TMP-draw_settings_dict'] = draw_settings_dict
class BSBST_tool_settings(bpy.types.PropertyGroup):
brush_color: bpy.props.FloatVectorProperty(name='Brush Color',
size=3,
subtype='COLOR',
default=(0.,.5,1.),
soft_min=0,
soft_max=1,
update=None,
)
radius_taper_start: bpy.props.FloatProperty(name='Taper Start', default=0, min=0, max=1, subtype='FACTOR')
radius_taper_end: bpy.props.FloatProperty(name='Taper End', default=0, min=0, max=1, subtype='FACTOR')
radius_min: bpy.props.FloatProperty(name='Radius Min', default=0, min=0, soft_max=10)
radius_max: bpy.props.FloatProperty(name='Radius Max', default=1, min=0, soft_max=10)
surface_offset: bpy.props.FloatProperty(name='Surface Offset', default=0, soft_max=10)
use_project_only_selected: bpy.props.BoolProperty(name='Project Onto Selected',
default=True,
description='Project the strokes only on selected objects if applicable.')
use_pressure_radius: bpy.props.BoolProperty(name='Use Pressure',
default=True,
description='Map tablet pressure to curve radius',)
use_offset_absolute: bpy.props.BoolProperty(name='Absolute Offset',
default=False,
description="Apply a fixed offset. (Don't scale by the radius.)")
class BSBST_OT_draw(bpy.types.Macro):
"""
Custom draw operation for hair curves
"""
bl_idname = "brushstroke_tools.draw"
bl_label = "Custom Draw"
bl_options = {'REGISTER', 'UNDO'}
class BSBST_OT_pre_process_brushstroke(bpy.types.Operator):
"""
Set up custom draw tool for curve drawing
"""
bl_idname = "brushstroke_tools.pre_process_brushstroke"
bl_label = "Custom Draw Pre Process"
bl_options = {'REGISTER', 'UNDO'}
def execute(self, context):
tool_settings = context.scene.BSBST_tool_settings
preserve_draw_settings(context)
# fix some settings
context.tool_settings.curve_paint_settings.curve_type = 'POLY'
context.tool_settings.curve_paint_settings.depth_mode = 'SURFACE'
context.tool_settings.curve_paint_settings.use_stroke_endpoints = False
is_other_object_selected = len(set(context.selected_objects) - {context.object}) > 0
context.tool_settings.curve_paint_settings.use_project_only_selected = is_other_object_selected and tool_settings.use_project_only_selected
# propagate some settings from custom tool
props_list = ['use_pressure_radius',
'radius_taper_start',
'radius_taper_end',
'radius_min',
'radius_max',
'surface_offset',
'use_offset_absolute',]
for prop in props_list:
setattr(context.tool_settings.curve_paint_settings, prop, getattr(tool_settings, prop))
return {'FINISHED'}
class BSBST_OT_post_process_brushstroke(bpy.types.Operator):
"""
"""
bl_idname = "brushstroke_tools.post_process_brushstroke"
bl_label = "Custom Draw Post Process"
bl_options = {'REGISTER', 'UNDO'}
ng_process = None
gp = None
def execute(self, context):
if not self.ng_process:
preserve_draw_settings(context, restore=True)
return {'CANCELLED'}
tool_settings = context.scene.BSBST_tool_settings
self.ng_process.nodes['settings.color'].value = [*tool_settings.brush_color, 1.]
self.ng_process.nodes['view_vector'].vector = context.space_data.region_3d.view_rotation @ Vector((0.0, 0.0, 1.0))
self.ng_process.nodes['new_key'].boolean = context.scene.tool_settings.use_keyframe_insert_auto
self.ng_process.nodes['deform'].boolean = utils.get_deformable(context.object)
if 'BSBST_surface_object' in context.object.keys():
if context.object['BSBST_surface_object']:
self.ng_process.nodes['surface_object'].inputs[0].default_value = context.object['BSBST_surface_object']
bpy.ops.geometry.execute_node_group(name="set_brush_stroke_color", session_uid=self.ng_process.session_uid)
preserve_draw_settings(context, restore=True)
return {'FINISHED'}
def invoke(self, context, event):
utils.ensure_resources()
self.gp = None
self.ng_process = bpy.data.node_groups['.brushstroke_tools.draw_processing']
return self.execute(context)
def register_custom_draw_macro():
op = BSBST_OT_draw.define("brushstroke_tools.pre_process_brushstroke")
op = BSBST_OT_draw.define("curves.draw")
op.properties.wait_for_input = False
op = BSBST_OT_draw.define("brushstroke_tools.post_process_brushstroke")
class BrushstrokesCurves(WorkSpaceTool):
bl_space_type = 'VIEW_3D'
bl_context_mode = 'EDIT_CURVES'
bl_idname = "brushstroke_tools.draw"
bl_label = "Brushstroke Draw"
bl_description = (
"Brushstrokes on the visible surface"
)
bl_icon = "brush.sculpt.paint"
bl_widget = None
bl_keymap = (
("brushstroke_tools.draw", {"type": 'LEFTMOUSE', "value": 'CLICK_DRAG'},
{"properties": []}),
)
def draw_settings(context, layout, tool, *, extra=False):
props = tool.operator_properties("brushstroke_tools.draw")
tool_settings = context.scene.BSBST_tool_settings
region_type = context.region.type
if region_type == 'TOOL_HEADER':
if not extra:
layout.prop(tool_settings , "radius_max")
layout.prop(tool_settings , "surface_offset")
layout.prop(tool_settings, "brush_color")
layout.popover("TOPBAR_PT_tool_settings_extra", text="...")
return
layout.use_property_split = True
layout.use_property_decorate = False
col = layout.column(align=False)
col.template_color_picker(tool_settings, 'brush_color', value_slider=True)
col.prop(tool_settings, 'brush_color', text='')
col = layout.column(align=True)
col.prop(tool_settings, "radius_taper_start", text="Taper Start", slider=True)
col.prop(tool_settings, "radius_taper_end", text="End", slider=True)
col = layout.column(align=True)
col.prop(tool_settings, "radius_min", text="Radius Min")
col.prop(tool_settings, "radius_max", text="Max")
col.prop(tool_settings, "use_pressure_radius", icon='STYLUS_PRESSURE', emboss=True)
layout.separator()
col = layout.column()
col.prop(tool_settings, "use_project_only_selected")
col.prop(tool_settings, "surface_offset")
col.prop(tool_settings, "use_offset_absolute")
classes = [
BSBST_tool_settings,
BSBST_OT_pre_process_brushstroke,
BSBST_OT_post_process_brushstroke,
BSBST_OT_draw,
]
def register():
for c in classes:
bpy.utils.register_class(c)
bpy.types.Scene.BSBST_tool_settings = bpy.props.PointerProperty(type=BSBST_tool_settings)
register_custom_draw_macro()
bpy.utils.register_tool(BrushstrokesCurves, after={"builtin.draw"}, group=True)
def unregister():
for c in reversed(classes):
bpy.utils.unregister_class(c)
bpy.utils.unregister_tool(BrushstrokesCurves)
del bpy.types.Scene.BSBST_tool_settings

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scripts-blender/addons/brushstroke_tools/icons.py Normal file
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import bpy
import bpy.utils.previews
import os
icon_previews = {}
def register():
# register custom icons
dir = os.path.join(os.path.dirname(__file__), "icons")
pcoll = bpy.utils.previews.new()
for entry in os.scandir(dir):
if entry.name.endswith(".png"):
name = os.path.splitext(entry.name)[0]
pcoll.load(name.upper(), entry.path, "IMAGE")
global icon_previews
icon_previews["main"] = pcoll
def unregister():
# unregister custom icons
global icon_previews
for pcoll in icon_previews.values():
bpy.utils.previews.remove(pcoll)
icon_previews.clear()

BIN
scripts-blender/addons/brushstroke_tools/icons/random.png (Stored with Git LFS) Normal file
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scripts-blender/addons/brushstroke_tools/icons/random.svg Normal file
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1205
scripts-blender/addons/brushstroke_tools/ops.py Normal file
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scripts-blender/addons/brushstroke_tools/preferences.py Normal file
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import bpy
from bpy.app.handlers import persistent
from . import utils
import os
@persistent
def load_handler(dummy):
utils.refresh_brushstroke_styles()
def update_resource_path(self, context):
utils.update_asset_lib_path()
class BSBST_OT_refresh_brushstroke_styles(bpy.types.Operator):
"""
"""
bl_idname = "brushstroke_tools.refresh_styles"
bl_label = "Refresh Brushstroke Styles"
bl_description = "Refresh available brushstroke styles from library."
bl_options = {"REGISTER", "UNDO"}
def execute(self, context):
utils.refresh_brushstroke_styles()
return {"FINISHED"}
class BSBST_OT_copy_resources_to_path(bpy.types.Operator):
"""
Copy Resources to Directory.
"""
bl_idname = "brushstroke_tools.copy_resources"
bl_label = "Copy Resources"
bl_description = "Copy addon resources to local directory"
bl_options = {"REGISTER", "UNDO"}
update: bpy.props.BoolProperty(default=False)
@classmethod
def poll(cls, context):
addon_prefs = context.preferences.addons[__package__].preferences
return os.path.isdir(addon_prefs.resource_path)
def execute(self, context):
utils.copy_resources_to_dir()
return {"FINISHED"}
def invoke(self, context, event):
wm = context.window_manager
return wm.invoke_props_dialog(self)
def draw(self, context):
layout = self.layout
layout.label(text='This will overwrite files in the target directory!', icon='ERROR')
layout.label(text=utils.get_resource_directory())
class BSBST_brush_style(bpy.types.PropertyGroup):
name: bpy.props.StringProperty(default='')
filepath: bpy.props.StringProperty(default='')
class BSBST_UL_brush_styles(bpy.types.UIList):
def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
resource_dir = utils.get_resource_directory()
if self.layout_type in {'DEFAULT', 'COMPACT'}:
split = layout.split(factor=0.4)
split.label(text=item.name)
row = split.row()
row.active = False
row.label(text=item.filepath.replace(resource_dir, '{LIB}/'), icon='FILE_FOLDER')
elif self.layout_type == 'GRID':
layout.label(text=item.name)
def draw_filter(self, context, layout):
return
class BSBST_preferences(bpy.types.AddonPreferences):
bl_idname = __package__
resource_path: bpy.props.StringProperty(name='Resource Directory', subtype='DIR_PATH', update=update_resource_path)
import_relative_path: bpy.props.BoolProperty(name='Relative Path', default=True)
import_method: bpy.props.EnumProperty(name='Import Method', default='APPEND',
items= [('APPEND', 'Append', 'Append data-blocks and pack image data as local to this file.', 'APPEND_BLEND', 0),\
('LINK', 'Link', 'Link data-blocks from resource directory.', 'LINK_BLEND', 1),
])
brush_styles: bpy.props.CollectionProperty(type=BSBST_brush_style)
active_brush_style_index: bpy.props.IntProperty()
def draw(self, context):
layout = self.layout
row = layout.row()
row.label(text='Brushstrokes Library', icon='ASSET_MANAGER')
layout.prop(self, 'import_method')
if self.import_method == 'LINK':
layout.prop(self, 'import_relative_path')
row = layout.row()
col = row.column()
dir_exists = os.path.isdir(utils.get_resource_directory())
resources_available = os.path.isfile(f"{utils.get_resource_directory()}brushstroke_tools-resources.blend")
if not dir_exists or not resources_available:
col.alert = True
col.prop(self, 'resource_path', placeholder=utils.get_resource_directory())
split = layout.split(factor=0.25)
split.column()
col = split.column()
if not dir_exists:
col.alert = True
row = col.row()
row.label(text='The selected directory does not exist.', icon='ERROR')
elif not resources_available:
col.alert = True
split = col.split(factor=0.75)
split.label(text='The required resources were not found at the specified directory.', icon='ERROR')
op = split.operator('brushstroke_tools.copy_resources', icon='IMPORT')
op.update = False
elif self.resource_path:
lib_version = utils.read_lib_version()
version_comp = utils.compare_versions(lib_version, utils.addon_version)
if bool(version_comp):
col.label(text=f"Version mismatch: Local Data ({'.'.join([str(i) for i in lib_version])}) {'>' if version_comp>0 else '<'} Addon ({'.'.join([str(i) for i in utils.addon_version])})", icon='ERROR')
if abs(version_comp) in [1,2]:
split = col.split(factor=0.75)
if version_comp>0:
split.label(text="Consider upgrading the addon or re-copying the data.")
else:
split.label(text="Consider upgrading re-copying the data.")
op = split.operator('brushstroke_tools.copy_resources', icon='IMPORT')
op.update = False
if self.import_method == 'LINK' and not self.resource_path:
col.label(text='Linking the resources from the default addon directory is not recommended.', icon='ERROR')
style_box = layout.box()
style_box_header = style_box.row(align=True)
style_box_header.label(text=f'Brush Styles ({len(self.brush_styles)} loaded)', icon='BRUSHES_ALL')
style_box_header.operator('brushstroke_tools.refresh_styles', text='', icon='FILE_REFRESH')
if not self.brush_styles:
style_box.label(text='No Brush styles found in library directory', icon='ERROR')
else:
style_box.template_list('BSBST_UL_brush_styles', "", self, "brush_styles",
self, "active_brush_style_index", rows=3, maxrows=5, sort_lock=True)
classes = [
BSBST_brush_style,
BSBST_UL_brush_styles,
BSBST_preferences,
BSBST_OT_copy_resources_to_path,
BSBST_OT_refresh_brushstroke_styles,
]
def register():
for c in classes:
bpy.utils.register_class(c)
bpy.app.handlers.load_post.append(load_handler)
def unregister():
for c in classes:
bpy.utils.unregister_class(c)
bpy.app.handlers.load_post.remove(load_handler)

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scripts-blender/addons/brushstroke_tools/settings.py Normal file
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import bpy
from . import utils, icons
def update_active_brushstrokes(self, context):
settings = context.scene.BSBST_settings
for i, el in enumerate(settings.context_brushstrokes):
ob = bpy.data.objects.get(el.name)
if not ob:
continue
is_active = i == settings.active_context_brushstrokes_index
ob['BSBST_active'] = is_active
if 'BSBST_material' in ob.keys() and is_active:
settings.context_material = ob['BSBST_material']
def update_brushstroke_method(self, context):
settings = context.scene.BSBST_settings
preset_name = f'BSBST-PRESET_{settings.brushstroke_method}'
preset_object = bpy.data.objects.get(preset_name)
settings.preset_object = preset_object
style_object = utils.get_active_context_brushstrokes_object(context)
if not style_object:
style_object = preset_object
if not style_object:
settings.context_material = None
return
if 'BSBST_material' in style_object.keys():
settings.context_material = style_object['BSBST_material']
else:
settings.context_material = None
def update_context_material(self, context):
settings = context.scene.BSBST_settings
style_object = utils.get_active_context_brushstrokes_object(context)
if not style_object:
style_object = settings.preset_object
if not style_object:
return
utils.set_brushstroke_material(style_object, self.context_material)
ng = bpy.data.node_groups.get(f'BSBST-BS.{self.context_material.brush_style}')
if not ng:
utils.set_preview(None)
return
if ng.preview:
utils.set_preview(ng.preview.image_pixels_float, ng.preview.image_size[:], ng.name)
else:
utils.set_preview(None)
def update_link_context_type(self, context):
self.link_context = True
def get_brushstroke_name(self):
return self["name"]
def set_brushstroke_name(self, value):
prev_name = self.get('name')
self["name"] = value
if not prev_name:
return
ob = bpy.data.objects.get(prev_name)
if not ob:
return
ob.name = value
ob.data.name = value
flow_ob = utils.get_flow_object(ob)
if flow_ob:
flow_name = utils.flow_name(value)
flow_ob.name = flow_name
flow_ob.data.name = flow_name
def get_modifier_name(self):
return self["name"]
def set_modifier_name(self, value):
prev_name = self.get('name')
if not prev_name:
self["name"] = value
return
ob = self.id_data.modifiers.get(prev_name)
ob.name = value
self["name"] = ob.name
def get_hide_viewport_base(self):
return self["hide_viewport_base"]
def set_hide_viewport_base(self, value):
self["hide_viewport_base"] = value
ob = bpy.data.objects.get(self.name)
if not ob:
return
ob.hide_set(value)
def get_active_context_brushstrokes_index(self):
if not self.get('active_context_brushstrokes_index'):
return 0
return self["active_context_brushstrokes_index"]
def set_active_context_brushstrokes_index(self, value):
settings = bpy.context.scene.BSBST_settings
if not settings.context_brushstrokes:
if not settings.preset_object:
return
if 'BSBST_material' in settings.preset_object.keys():
settings.context_material = settings.preset_object['BSBST_material']
prev = self.get('active_context_brushstrokes_index')
if prev == abs(value):
return
self["active_context_brushstrokes_index"] = abs(value)
bs_ob = bpy.data.objects.get(self.context_brushstrokes[value].name)
if settings.silent_switch:
return
if not bs_ob:
return
if not bpy.context.object:
return
view_layer = bpy.context.view_layer
if bpy.context.object.visible_get(view_layer = view_layer):
bpy.ops.object.mode_set(mode='OBJECT')
bpy.context.view_layer.objects.active = bs_ob
if bs_ob.visible_get(view_layer = view_layer):
bpy.ops.object.mode_set(mode='OBJECT')
for ob in bpy.data.objects:
ob.select_set(False)
if utils.is_brushstrokes_object(ob):
ob['BSBST_active'] = False
bs_ob.select_set(True)
bs_ob['BSBST_active'] = True
if settings.edit_toggle and bs_ob.visible_get(view_layer = view_layer):
utils.edit_active_brushstrokes(bpy.context)
if 'BSBST_material' in bs_ob.keys():
settings.context_material = bs_ob['BSBST_material']
def get_brush_style(self):
name = self.node_tree.nodes['Brush Style'].node_tree.name
return '.'.join(name.split('.')[1:])
def set_brush_style(self, value):
addon_prefs = bpy.context.preferences.addons[__package__].preferences
ng_name = f'BSBST-BS.{value}'
ng = utils.ensure_node_group(ng_name, [bs for bs in addon_prefs.brush_styles if bs.name==value][0].filepath)
if ng.preview:
utils.set_preview(ng.preview.image_pixels_float, ng.preview.image_size[:], ng.name)
else:
utils.set_preview(None)
node = self.node_tree.nodes['Brush Style']
node_prev_inputs = [input.name for input in node.inputs]
node.node_tree = ng
for in_new in node.inputs:
if in_new.name in node_prev_inputs:
continue
in_new.default_value = ng.interface.items_tree[in_new.name].default_value
self["brush_style"] = value
def link_context_type_items(self, context):
items = [
('SURFACE_OBJECT', 'Surface Object', 'Link socket preset to context surface object', 'OUTLINER_OB_SURFACE', 1),\
('FLOW_OBJECT', 'Flow Object', 'Link socket preset to context flow object', 'FORCE_WIND', 11),
('MATERIAL', 'Material', 'Link socket preset to context material', 'MATERIAL', 101),
('UVMAP', 'UV Map', 'Link socket preset to active context UVMap', 'UV', 201),
('RANDOM', 'Random', 'Randomize input value', icons.icon_previews['main']["RANDOM"].icon_id, 501),
]
return items
def icon_from_link_type(link_type):
items = link_context_type_items(None, bpy.context)
for enum_item in items:
if enum_item[0]==link_type:
icon = enum_item[3]
if type(icon) == int:
return icon
else:
return {k : i for i, k in enumerate(bpy.types.UILayout.bl_rna.functions["prop"].parameters["icon"].enum_items.keys())}[icon]
class BSBST_socket_info(bpy.types.PropertyGroup):
name: bpy.props.StringProperty(default='')
link_context: bpy.props.BoolProperty(default=False, name='Link to Context')
link_context_type: bpy.props.EnumProperty(default=1, name='Link to Context', update=update_link_context_type,
items=link_context_type_items)
hide_ui: bpy.props.BoolProperty(default=False)
class BSBST_modifier_info(bpy.types.PropertyGroup):
name: bpy.props.StringProperty(default='', get=get_modifier_name, set=set_modifier_name)
hide_ui: bpy.props.BoolProperty(default=False)
default_closed: bpy.props.BoolProperty(default=False)
socket_info: bpy.props.CollectionProperty(type=BSBST_socket_info)
class BSBST_context_brushstrokes(bpy.types.PropertyGroup):
name: bpy.props.StringProperty(default='', get=get_brushstroke_name, set=set_brushstroke_name)
method: bpy.props.StringProperty(default='')
hide_viewport_base: bpy.props.BoolProperty(default=False, get=get_hide_viewport_base, set=set_hide_viewport_base)
class BSBST_Settings(bpy.types.PropertyGroup):
attach_to_active_selection: bpy.props.BoolProperty(default=True)
preset_object: bpy.props.PointerProperty(type=bpy.types.Object, name="Default/Preset Object")
assign_materials: bpy.props.BoolProperty(name='Assign Modifier Materials', default=True)
brushstroke_method: bpy.props.EnumProperty(default='SURFACE_FILL', update=update_brushstroke_method,
items= [('SURFACE_FILL', 'Fill', 'Use surface fill method for new brushstroke object', 'OUTLINER_OB_FORCE_FIELD', 0),\
('SURFACE_DRAW', 'Draw', 'Use surface draw method for new brushstroke object', 'LINE_DATA', 1),
])
style_context: bpy.props.EnumProperty(default='BRUSHSTROKES',
name='Context',
items= [
('PRESET', 'Default', 'Specify the style of the current default used for new brushstrokes', 'SETTINGS', 0),\
('BRUSHSTROKES', 'Brushstrokes', 'Specify the style of the currently active brushstrokes', 'BRUSH_DATA', 1),
('AUTO', 'Auto', 'Specify the style of either the active brushstrokes or the preset depending on the context', 'AUTO', 2),
])
view_tab: bpy.props.EnumProperty(default='SHAPE',
name='Context',
items= [
('SHAPE', 'Shape', 'View Modifiers Settings', 'MODIFIER', 0),
('MATERIAL', 'Material', 'View Material Settings', 'MATERIAL', 1),
('SETTINGS', 'Settings', 'View Additional Settings', 'PREFERENCES', 2),
])
try:
gpv3 = bpy.context.preferences.experimental.use_grease_pencil_version3
except:
v0, v1, v3 = bpy.app.version
gpv3 = v0 >= 4 and v1 >= 3
curve_mode: bpy.props.EnumProperty(default='CURVES',
items= [('CURVE', 'Legacy', 'Use legacy curve type (Limited Support)', 'CURVE_DATA', 0),\
('CURVES', 'Curves', 'Use hair curves (Fully supported)', 'CURVES_DATA', 1),
('GP', 'Grease Pencil', 'Use Grease Pencil (Limited Support)', 'OUTLINER_OB_GREASEPENCIL', 2),
] if gpv3 else
[('CURVE', 'Legacy', 'Use legacy curve type (Limited Support)', 'CURVE_DATA', 0),\
('CURVES', 'Curves', 'Use hair curves (Full Support)', 'CURVES_DATA', 1),
])
context_brushstrokes: bpy.props.CollectionProperty(type=BSBST_context_brushstrokes)
context_material: bpy.props.PointerProperty(type=bpy.types.Material, name="Material", update=update_context_material)
active_context_brushstrokes_index: bpy.props.IntProperty( default = 0,
update=update_active_brushstrokes,
get=get_active_context_brushstrokes_index,
set=set_active_context_brushstrokes_index)
ui_options: bpy.props.BoolProperty(default=False,
name='UI Options',
description="Show advanced UI options to customize exposed parameters")
reuse_flow: bpy.props.BoolProperty(default=False,
name='Re-use Flow Object',
description="Re-use flow object from active brushstrokes when creating new brushstrokes")
deforming_surface: bpy.props.BoolProperty(default=False,
name='Deforming Surface',
description='Create brushstrokes layer for a deforming surface')
animated: bpy.props.BoolProperty(default=False,
name='Animated',
description='Create brushstrokes layer for animated brushstrokes/flow')
edit_toggle: bpy.props.BoolProperty(default=False,
name='Edit on Selection',
description="Jump into the corresponding edit mode when selecting a brushstrokes layer")
estimate_dimensions: bpy.props.BoolProperty(default=True,
name='Estimate Dimensions',
description="Estimate the length, width and distribution density of the brush strokes based on the bounding box to provide a reasonable starting point regardless of scale")
silent_switch: bpy.props.BoolProperty(default=False)
preview_texture: bpy.props.PointerProperty(type=bpy.types.Texture)
classes = [
BSBST_socket_info,
BSBST_modifier_info,
BSBST_context_brushstrokes,
BSBST_Settings,
]
def register():
for c in classes:
bpy.utils.register_class(c)
bpy.types.Scene.BSBST_settings = bpy.props.PointerProperty(type=BSBST_Settings)
bpy.types.Object.modifier_info = bpy.props.CollectionProperty(type=BSBST_modifier_info)
bpy.types.Material.brush_style = bpy.props.StringProperty(get=get_brush_style, set=set_brush_style, search_options={'SORT'})
bpy.app.handlers.depsgraph_update_post.append(utils.find_context_brushstrokes)
def unregister():
for c in reversed(classes):
bpy.utils.unregister_class(c)
del bpy.types.Scene.BSBST_settings
del bpy.types.Object.modifier_info
bpy.app.handlers.depsgraph_update_post.remove(utils.find_context_brushstrokes)

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scripts-blender/addons/brushstroke_tools/ui.py Normal file
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import bpy
from . import utils
from . import settings as settings_py
warning_icons_dict = {
'ERROR': 'CANCEL',
'WARNING': 'ERROR',
'INFO': 'INFO',
}
def draw_panel_ui_recursive(panel, panel_name, mod, items, display_mode, hide_panel=False):
scene = bpy.context.scene
settings = scene.BSBST_settings
is_preset = mod.id_data == settings.preset_object and mod.id_data
if not panel:
return
mod_info = mod.id_data.modifier_info.get(mod.name)
icon_dict = {
bpy.types.NodeTreeInterfaceSocketObject: 'OBJECT_DATA',
bpy.types.NodeTreeInterfaceSocketMaterial: 'MATERIAL',
bpy.types.NodeTreeInterfaceSocketImage: 'IMAGE_DATA',
bpy.types.NodeTreeInterfaceSocketCollection: 'OUTLINER_COLLECTION',
}
data_dict = {
bpy.types.NodeTreeInterfaceSocketMaterial: 'materials',
bpy.types.NodeTreeInterfaceSocketImage: 'images',
bpy.types.NodeTreeInterfaceSocketCollection: 'collections',
}
mode_compare = []
for k, v in items:
if type(v) == bpy.types.NodeTreeInterfacePanel:
v_id = f'Panel_{v.index}' # TODO: replace with panel identifier once that is exposed in Blender 4.3
if not mod_info:
continue
s = mod_info.socket_info.get(v_id)
if not s:
continue
if display_mode == 0:
if s.hide_ui:
continue
subpanel_header, subpanel = panel.panel(k, default_closed = v.default_closed)
subpanel_header.label(text=k)
if display_mode != 0:
col = subpanel_header.column()
col.active = not (mod_info.hide_ui or hide_panel)
col.prop(s, 'hide_ui', icon_only=True, icon='UNPINNED' if s.hide_ui else 'PINNED', emboss=False)
draw_panel_ui_recursive(subpanel, k, mod, v.interface_items.items(), display_mode, s.hide_ui)
mode_compare = []
else:
if v.parent.name != panel_name:
continue
if f'{v.identifier}' not in mod.keys():
continue
if not mod_info:
continue
if type(v) == bpy.types.NodeTreeInterfaceSocketMenu:
for item in mod.id_properties_ui(f'{v.identifier}').as_dict()['items']:
if item[4] == mod[f'{v.identifier}']:
continue
mode_compare += [item[0]]
s = mod_info.socket_info.get(v.identifier)
if not s:
continue
if display_mode == 0:
comp_match = False
for c in mode_compare:
comp_match = c in v.name
if comp_match:
break
if comp_match:
continue
if s.hide_ui:
continue
row = panel.row(align=True)
row.active = not (mod_info.hide_ui or hide_panel or s.hide_ui)
col = row.column()
input_row = col.row(align=True)
attribute_toggle = False
if f'{v.identifier}_use_attribute' in mod.keys() and not v.force_non_field:
attribute_toggle = mod[f'{v.identifier}_use_attribute']
if attribute_toggle:
input_row.prop(mod, f'["{v.identifier}_attribute_name"]', text=k)
else:
input_row.prop(mod, f'["{v.identifier}"]', text=k)
if is_preset:
toggle = input_row.operator('brushstroke_tools.preset_toggle_attribute',
text='',
depress=mod[f'{v.identifier}_use_attribute'],
icon='SPREADSHEET')
else:
toggle = input_row.operator('brushstroke_tools.brushstrokes_toggle_attribute',
text='',
depress=mod[f'{v.identifier}_use_attribute'],
icon='SPREADSHEET')
toggle.modifier_name = mod.name
toggle.input_name = v.identifier
else:
if type(v) in icon_dict.keys():
icon = icon_dict[type(v)]
else:
icon='NONE'
if type(v) in data_dict.keys():
input_row.prop_search(mod, f'["{v.identifier}"]', bpy.data, data_dict[type(v)], text=k, icon=icon)
else:
input_row.prop(mod, f'["{v.identifier}"]', text=k, icon=icon)
if type(v) in utils.linkable_sockets:
col.active = not s.link_context
icon = settings_py.icon_from_link_type(s.link_context_type)
row.alignment = 'EXPAND'
if s.link_context:
row.prop(s, 'link_context', text='', icon_value=icon)
else:
if display_mode == -1:
row.prop(s, 'link_context_type', text='', emboss=True, icon='LINKED', icon_only=True)
if display_mode != 0:
col = row.column()
col.active = not (mod_info.hide_ui or hide_panel)
col.prop(s, 'hide_ui', icon_only=True, icon='UNPINNED' if s.hide_ui else 'PINNED', emboss=False)
def draw_material_settings(layout, material, surface_object=None):
addon_prefs = bpy.context.preferences.addons[__package__].preferences
settings = bpy.context.scene.BSBST_settings
material_row = layout.row(align=True)
material_row.template_ID(settings, 'context_material')
material_header, material_panel = layout.panel("brushstrokes_material", default_closed=False)
material_header.label(text='Properties', icon='MATERIAL')
if material_panel:
# draw color options
try:
n1 = material.node_tree.nodes['Color Attribute']
n2 = material.node_tree.nodes['Color Texture']
n3 = material.node_tree.nodes['Color']
n4 = material.node_tree.nodes['Image Texture']
n5 = material.node_tree.nodes['UV Map']
n6 = material.node_tree.nodes['Color Variation']
box = material_panel.box()
box.prop(n1, 'mute', text='Use Brush Color', invert_checkbox=True)
if n1.mute:
row = box.row(align=True)
if n2.mute:
row.prop(n3.outputs[0], 'default_value', text ='')
else:
col = row.column()
col.template_node_inputs(n4)
row.prop(n2, 'mute', icon_only=True, invert_checkbox=True, icon='IMAGE')
if not n2.mute:
if not surface_object:
box.prop(n5, 'uv_map', icon='UV')
else:
box.prop_search(n5, 'uv_map', surface_object.data, 'uv_layers', icon='UV')
box.prop(n6.inputs[0], 'default_value', text='Color Variation')
except:
pass
# draw opacity options
try:
n1 = material.node_tree.nodes.get('Use Strength')
n2 = material.node_tree.nodes.get('Opacity')
n3 = material.node_tree.nodes.get('Backface Culling')
box = material_panel.box()
if n1:
box.prop(n1, 'mute', text='Use Brush Strength', invert_checkbox=True)
if n2:
box.prop(n2.inputs[0], 'default_value', text='Opacity')
if n3:
box.prop(n3, 'mute', text='Backface Culling', invert_checkbox=True)
except:
pass
# draw BSDF options
try:
n1 = material.node_tree.nodes['Principled BSDF']
n2 = material.node_tree.nodes['Bump']
box = material_panel.box()
box.prop(n1.inputs[1], 'default_value', text='Metallic')
box.prop(n1.inputs[2], 'default_value', text='Roughness')
box.prop(n2, 'mute', text='Bump', invert_checkbox=True)
row = box.row()
if n2.mute:
row.active = False
row.prop(n2.inputs[0], 'default_value', text='Bump Strength')
except:
pass
# draw translucency options
try:
n1 = material.node_tree.nodes['Translucency Add']
n2 = material.node_tree.nodes['Translucency Strength']
n3 = material.node_tree.nodes['Translucency Tint']
box = material_panel.box()
box.prop(n1, 'mute', text='Translucency', invert_checkbox=True)
box.prop(n2.inputs[0], 'default_value', text='Translucency Strength')
box.prop(n3.inputs[7], 'default_value', text='Translucency Tint')
except:
pass
material_panel.prop(material, 'diffuse_color', text='Viewport Color')
# draw brush style options
try:
n1 = material.node_tree.nodes['Brush Style']
n2 = material.node_tree.nodes['Brush Curve']
brush_header, brush_panel = layout.panel('brush_panel', default_closed = True)
brush_header.label(text='Brush Style', icon='BRUSHES_ALL')
if brush_panel:
if settings.preview_texture:
row = brush_panel.row(align=True)
row.template_preview(settings.preview_texture, show_buttons=False, preview_id='brushstroke_preview')
row = brush_panel.row(align=True)
row.prop_search(material, 'brush_style', addon_prefs, 'brush_styles', text='', icon='BRUSHES_ALL')
row.operator('brushstroke_tools.refresh_styles', text='', icon='FILE_REFRESH')
if n1.inputs:
for in_s in n1.inputs:
brush_panel.prop(in_s, 'default_value', text=f"{in_s.name}")
brush_panel.template_node_inputs(n2)
except:
pass
# draw effects options
try:
n1 = material.node_tree.nodes['Effects In']
effects_header, effects_panel = layout.panel('effects_panel', default_closed = True)
effects_header.label(text='Effects', icon='SHADERFX')
if effects_panel:
draw_effect_panel_recursive(effects_panel, material, n1)
except:
pass
def draw_effect_panel_recursive(effects_panel, material, prev_node):
if not prev_node:
return
if not prev_node.outputs[0].links:
return
node = prev_node.outputs[0].links[0].to_node
if node.name == 'Effects Out':
return
header, panel = effects_panel.panel(f'{node.name}_panel', default_closed = True)
header.alignment = 'LEFT'
header.prop(node, 'mute', invert_checkbox=True, icon_only=True)
header.label(text=node.label if node.label else node.name)
if panel:
if node.mute:
panel.active = False
for input in node.inputs[1:]:
panel.prop(input, 'default_value', text=input.name)
draw_effect_panel_recursive(effects_panel, material, node)
def draw_advanced_settings(layout, settings):
new_advanced_header, new_advanced_panel = layout.panel("new_advanced", default_closed=True)
new_advanced_header.label(text='Advanced')
if not new_advanced_panel:
return
new_advanced_panel.row().prop(settings, 'curve_mode', expand=True)
if settings.curve_mode in ['CURVE', 'GP']:
new_advanced_panel.label(text='Curve mode does not support drawing on deformed geometry', icon='ERROR')
new_advanced_panel.prop(settings, 'animated')
new_advanced_panel.prop(settings, 'deforming_surface')
new_advanced_panel.prop(settings, 'assign_materials')
new_advanced_panel.prop(settings, 'reuse_flow')
new_advanced_panel.prop(settings, 'estimate_dimensions')
new_advanced_panel.prop(settings, 'style_context')
new_advanced_panel.operator('brushstroke_tools.render_setup')
def draw_shape_properties(layout, settings, style_object, is_preset, display_mode):
if not style_object:
return
for mod in style_object.modifiers:
mod_info = mod.id_data.modifier_info.get(mod.name)
if not mod_info:
continue
if display_mode == 0:
if mod_info.hide_ui:
continue
mod_header, mod_panel = layout.panel(mod.name, default_closed = mod_info.default_closed)
row = mod_header.row(align=True)
row.label(text='', icon='GEOMETRY_NODES')
row.prop(mod_info, 'name', text='', emboss=False)
if display_mode != 0:
mod_header.prop(mod_info, 'hide_ui', icon_only=True, icon='UNPINNED' if mod_info.hide_ui else 'PINNED', emboss=False)
if is_preset:
op = row.operator('brushstroke_tools.preset_remove_mod', text='', icon='X')
else:
op = row.operator('object.modifier_remove', text='', icon='X')
# TODO Implement operator to remove modifier on brushstroke object, even when not active
op.modifier = mod.name
if not mod_panel:
continue
if not mod.type == 'NODES':
mod_panel.label(text="Only 'Nodes' modifiers supported")
continue
# show settings for nodes modifiers
if mod.show_group_selector:
mod_panel.prop(mod, 'node_group')
if not mod.node_group:
continue
draw_panel_ui_recursive(mod_panel,
'',
mod,
mod.node_group.interface.items_tree.items(),
display_mode)
draw_mod_warnings(layout, mod)
def draw_material_properties(layout, settings, surface_object):
if settings.context_material:
draw_material_settings(layout, settings.context_material, surface_object=surface_object)
else:
material_row = layout.row(align=True)
material_row.template_ID(settings, 'context_material', new='brushstroke_tools.new_material')
def draw_settings_properties(layout, settings, style_object):
deform = utils.get_deformable(style_object)
op = layout.operator('brushstroke_tools.switch_deformable', text='Deforming Surface', depress=deform, icon='MOD_SIMPLEDEFORM')
op.deformable = not deform
anim = utils.get_animated(style_object)
op = layout.operator('brushstroke_tools.switch_animated', text='Animated Strokes', depress=anim, icon='GP_MULTIFRAME_EDITING')
op.animated = not anim
layout.prop(style_object, 'visible_shadow', icon='LIGHT', emboss=True)
def draw_properties_panel(layout, settings, style_object, surface_object, is_preset, display_mode):
layout.separator(type='LINE')
row = layout.row(align=True)
row.prop(settings, 'view_tab', expand=True)
layout.separator(factor=.0, type='SPACE')
if settings.view_tab == 'MATERIAL':
draw_material_properties(layout, settings, surface_object)
elif settings.view_tab == 'SHAPE':
draw_shape_properties(layout, settings, style_object, is_preset, display_mode)
# expose add modifier operator for preset context
if is_preset:
layout.operator('brushstroke_tools.preset_add_mod', icon='ADD')
elif settings.view_tab == 'SETTINGS':
draw_settings_properties(layout, settings, style_object)
def draw_mod_warnings(layout, mod):
if utils.compare_versions(bpy.app.version, (4,3,0)) < 0:
return
if mod.node_warnings:
warnings_header, warnings_panel = layout.panel(mod.name+'_warnings', default_closed = True)
warnings_header.label(text=f'Warnings ({len(mod.node_warnings)})')
if warnings_panel:
for warning in mod.node_warnings: # TODO sort warnings by type and alphabet
warnings_panel.label(text=warning.message,icon=warning_icons_dict[warning.type])
class BSBST_UL_brushstroke_objects(bpy.types.UIList):
def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
settings = data
context_brushstroke = item
if self.layout_type in {'DEFAULT', 'COMPACT'}:
if context_brushstroke:
method_icon = 'BRUSH_DATA'
method_icon = settings.bl_rna.properties['brushstroke_method'].enum_items[context_brushstroke.method].icon
col = layout.column()
row = col.row(align=True)
row.prop(context_brushstroke, 'name', text='', emboss=False, icon=method_icon)
bs_ob = bpy.data.objects.get(item.name)
if not bs_ob:
return
row.prop(context_brushstroke, 'hide_viewport_base', icon_only=True, emboss=False, icon='HIDE_ON' if context_brushstroke.hide_viewport_base else 'HIDE_OFF')
row.prop(bs_ob, 'hide_viewport', icon_only=True, emboss=False)
row.prop(bs_ob, 'hide_render', icon_only=True, emboss=False)
else:
layout.label(text="", translate=False, icon_value=icon)
elif self.layout_type == 'GRID':
layout.label(text="", icon_value=icon)
def draw_filter(self, context, layout):
return
class BSBST_MT_bs_context_menu(bpy.types.Menu):
bl_label = "Brushstroke Specials"
def draw(self, _context):
layout = self.layout
op = layout.operator('brushstroke_tools.copy_brushstrokes', text='Copy to Selected Objects')
op.copy_all = False
op = layout.operator('brushstroke_tools.copy_brushstrokes', text='Copy All to Selected Objects')
op.copy_all = True
op = layout.operator('brushstroke_tools.switch_deformable')
op.switch_all = False
op = layout.operator('brushstroke_tools.copy_flow')
op = layout.operator("brushstroke_tools.assign_surface")
class BSBST_PT_brushstroke_tools_panel(bpy.types.Panel):
bl_space_type = 'VIEW_3D'
bl_region_type = 'UI'
bl_label = "Brushstroke Tools"
bl_category = "Brushstroke Tools"
def draw_header_preset(self,context):
layout = self.layout
row = layout.row(align=True)
op = row.operator('brushstroke_tools.view_all', icon='RESTRICT_VIEW_OFF', text='')
op.disable = False
op = row.operator('brushstroke_tools.view_all', icon='RESTRICT_VIEW_ON', text='')
op.disable = True
def draw(self, context):
layout = self.layout
settings = context.scene.BSBST_settings
surface_object = utils.get_active_context_surface_object(context)
surface_row = layout.row()
if surface_object:
surface_row.label(text=f'{surface_object.name}', icon='OUTLINER_OB_SURFACE')
else:
surface_row.alert = True
surface_row.label(text='No Valid Surface Object', icon='OUTLINER_OB_SURFACE')
row = layout.row(align=True)
op = row.operator("brushstroke_tools.new_brushstrokes", text='Fill', icon='OUTLINER_OB_FORCE_FIELD')
op.method = 'SURFACE_FILL'
op = row.operator("brushstroke_tools.new_brushstrokes", text='Draw', icon='LINE_DATA')
op.method = 'SURFACE_DRAW'
draw_advanced_settings(layout, settings)
# identify style context
style_object = context.object if settings.style_context=='BRUSHSTROKES' else settings.preset_object
if settings.style_context=='PRESET':
style_object = settings.preset_object
else:
if utils.is_brushstrokes_object(context.object):
style_object = context.object
else:
if settings.context_brushstrokes:
bs_name = settings.context_brushstrokes[settings.active_context_brushstrokes_index].name
context_bs = bpy.data.objects.get(bs_name)
if context_bs:
style_object = context_bs
is_preset = style_object == settings.preset_object
display_mode = settings.ui_options
if is_preset:
display_mode = -1
style_header, style_panel = layout.panel("brushstrokes_style", default_closed=False)
if is_preset:
style_header.label(text="Default Settings", icon='SETTINGS')
else:
style_header.label(text="Brushstroke Settings", icon='BRUSH_DATA')
#style_header.operator('brushstroke_tools.make_preset', text='', icon='DECORATE_OVERRIDE')
style_header.row().prop(settings, 'ui_options', icon='OPTIONS', icon_only=True)
if style_panel:
if settings.style_context=='BRUSHSTROKES' and not utils.is_brushstrokes_object(style_object):
style_panel.label(text='No Brushstroke Context Found')
return
if not is_preset and len(settings.context_brushstrokes)>0:
row = style_panel.row()
row.template_list("BSBST_UL_brushstroke_objects", "", settings, "context_brushstrokes",
settings, "active_context_brushstrokes_index", rows=3, maxrows=5, sort_lock=True)
column = row.column(align=True)
column.operator('brushstroke_tools.duplicate_brushstrokes', text='', icon='DUPLICATE')
column.operator('brushstroke_tools.delete_brushstrokes', text='', icon='TRASH')
column.menu('BSBST_MT_bs_context_menu', text='', icon = 'DOWNARROW_HLT')
row = style_panel.row()
row_edit = row.row(align=True)
row_edit.operator('brushstroke_tools.select_surface', icon='OUTLINER_OB_SURFACE', text='')
bs_ob = utils.get_active_context_brushstrokes_object(context)
text = 'Edit Flow' if getattr(bs_ob, '["BSBST_method"]', None)=='SURFACE_FILL' else 'Edit Brushstrokes'
row_edit.operator('brushstroke_tools.edit_brushstrokes', icon='GREASEPENCIL', text = text)
row_edit.prop(settings, 'edit_toggle', icon='RESTRICT_SELECT_OFF' if settings.edit_toggle else 'RESTRICT_SELECT_ON', icon_only=True)
if not settings.preset_object and is_preset:
layout.operator("brushstroke_tools.init_preset", icon='MODIFIER')
else:
draw_properties_panel(style_panel, settings, style_object, surface_object, is_preset, display_mode)
class BSBST_MT_PIE_brushstroke_data_marking(bpy.types.Menu):
bl_idname= "BSBST_MT_PIE_brushstroke_data_marking"
bl_label = "Mark Brushstroke Flow"
items = {
"Brush Flow - Mark": ['FORCE_WIND'],
"Brush Flow - Clear": ['NONE'],
"Brush Break - Mark": ['MOD_PHYSICS'],
"Brush Break - Clear": ['NONE'],
"Brush Ignore - Mark": ['X'],
"Brush Ignore - Clear": ['NONE'],
}
def draw(self, context):
layout = self.layout
pie = layout.menu_pie()
for name, info in self.items.items():
pie.alert=True
op = pie.operator("geometry.execute_node_group", text=name, icon=info[0])
op.asset_library_type='CUSTOM'
op.asset_library_identifier=utils.asset_lib_name
op.relative_asset_identifier=f"brushstroke_tools-resources.blend/NodeTree/{name}"
class BSBST_OT_brushstroke_data_marking(bpy.types.Operator):
"""
Call pie menu for operators to mark brushstroke data on the surface mesh
"""
bl_idname = "brushstroke_tools.data_marking"
bl_label = "Mark Brushstroke Data"
bl_description = " Call pie menu for operators to mark brushstroke data on the surface mesh"
@classmethod
def poll(cls, context):
return context.mode == 'EDIT_MESH'
def execute(self, context):
bpy.ops.wm.call_menu_pie('INVOKE_DEFAULT', name=BSBST_MT_PIE_brushstroke_data_marking.bl_idname)
return {'FINISHED'}
classes = [
BSBST_UL_brushstroke_objects,
BSBST_MT_bs_context_menu,
BSBST_PT_brushstroke_tools_panel,
BSBST_MT_PIE_brushstroke_data_marking,
BSBST_OT_brushstroke_data_marking,
]
def register():
for c in classes:
bpy.utils.register_class(c)
# Register UI shortcuts
wm = bpy.context.window_manager
if wm.keyconfigs.addon is not None:
km = wm.keyconfigs.addon.keymaps.new(name="Mesh")
kmi = km.keymap_items.new("brushstroke_tools.data_marking","F", "PRESS",shift=False, ctrl=True, alt=True)
def unregister():
for c in reversed(classes):
bpy.utils.unregister_class(c)

638
scripts-blender/addons/brushstroke_tools/utils.py Normal file
View File

@ -0,0 +1,638 @@
import os, ast
import bpy
from bpy.app.handlers import persistent
import math, shutil, errno, numpy
from bpy.app.handlers import persistent
addon_version = (0,0,0)
preview_name = '.BSBST-preview'
ng_list = [
".brushstroke_tools.draw_processing",
".brushstroke_tools.pre_processing",
".brushstroke_tools.animation",
".brushstroke_tools.surface_fill",
".brushstroke_tools.surface_draw",
".brushstroke_tools.geometry_input",
".brushstroke_tools.mask_surface",
]
linkable_sockets = [
bpy.types.NodeTreeInterfaceSocketObject,
bpy.types.NodeTreeInterfaceSocketMaterial,
bpy.types.NodeTreeInterfaceSocketVector,
bpy.types.NodeTreeInterfaceSocketFloat,
bpy.types.NodeTreeInterfaceSocketInt,
bpy.types.NodeTreeInterfaceSocketString,
]
asset_lib_name = 'Brushstroke Tools Library'
@persistent
def find_context_brushstrokes(dummy):
context = bpy.context
settings = context.scene.BSBST_settings
edit_toggle = settings.edit_toggle
settings.edit_toggle = False
len_prev = len(settings.context_brushstrokes)
name_prev = settings.context_brushstrokes[settings.active_context_brushstrokes_index].name if len_prev else ''
idx = settings.active_context_brushstrokes_index
# identify context brushstrokes
for el in range(len(settings.context_brushstrokes)):
settings.context_brushstrokes.remove(0)
context_object = context.object
if not is_brushstrokes_object(context_object):
bs_ob = is_flow_object(context_object)
if bs_ob:
context_object = bs_ob
else:
bs_ob = context_object
surf_ob = get_surface_object(context_object)
if surf_ob:
context_object = surf_ob
for ob in bpy.data.objects:
if not is_brushstrokes_object(ob):
continue
surf_ob = get_surface_object(ob)
flow_ob = get_flow_object(ob)
if not surf_ob:
if not flow_ob:
continue
if not surf_ob == context_object:
if not flow_ob == context_object:
continue
bs = settings.context_brushstrokes.add()
bs.name = ob.name
bs.method = ob['BSBST_method']
bs.hide_viewport_base = ob.hide_get()
if name_prev == ob.name:
idx = len(settings.context_brushstrokes)-1
if not settings.context_brushstrokes:
settings.edit_toggle = edit_toggle
return
if bs_ob:
for i, bs in enumerate(settings.context_brushstrokes):
if bs.name == bs_ob.name:
if name_prev != bs.name:
settings.ui_options = False
settings.silent_switch = True
settings.active_context_brushstrokes_index = i
settings.silent_switch = False
elif len_prev == len(settings.context_brushstrokes):
settings.silent_switch = True
settings.active_context_brushstrokes_index = idx
settings.silent_switch = False
settings.active_context_brushstrokes_index = max(min(settings.active_context_brushstrokes_index, len(settings.context_brushstrokes)-1), 0)
settings.edit_toggle = edit_toggle
@persistent
def refresh_preset(dummy):
context = bpy.context
settings = context.scene.BSBST_settings
if not settings:
return
for ob in [settings.preset_object, get_active_context_brushstrokes_object(context)]:
if not ob:
continue
for mod in ob.modifiers:
mod_info = ob.modifier_info.get(mod.name)
if not mod_info:
mod_info = ob.modifier_info.add()
mod_info.name = mod.name
if not mod.type == 'NODES':
continue
if not mod.node_group:
continue
for v in mod.node_group.interface.items_tree.values():
if type(v) is bpy.types.NodeTreeInterfacePanel:
v_id = f'Panel_{v.index}' # TODO: replace with panel identifier once that is exposed in Blender 4.3
else:
v_id = v.identifier
if v_id in [s.name for s in mod_info.socket_info]:
continue
n = mod_info.socket_info.add()
n.name = v_id
# TODO: clean up old settings
def mark_socket_context_type(mod_info, socket_name, link_type):
socket_info = mod_info.socket_info.get(socket_name)
if not socket_info:
socket_info = mod_info.socket_info.add()
socket_info.name = socket_name
socket_info.link_context_type = link_type
def mark_socket_hidden(mod_info, socket_name, hide=True):
socket_info = mod_info.socket_info.get(socket_name)
if not socket_info:
socket_info = mod_info.socket_info.add()
socket_info.name = socket_name
socket_info.hide_ui = hide
def mark_panel_hidden(mod_info, panel_name, hide=True):
mod = mod_info.id_data.modifiers.get(mod_info.name)
if not mod:
return
if not mod.type == 'NODES':
return
ng = mod.node_group
if not ng:
return
v_id = ''
for k, v in ng.interface.items_tree.items():
if type(v) != bpy.types.NodeTreeInterfacePanel:
continue
if v.name == panel_name:
v_id = f'Panel_{v.index}'
break
if not v_id:
return
socket_info = mod_info.socket_info.get(v_id)
if not socket_info:
socket_info = mod_info.socket_info.add()
socket_info.name = v_id
socket_info.hide_ui = hide
def set_brushstroke_material(ob, material):
prev_mat = None
if 'BSBST_material' in ob.keys():
if ob['BSBST_material'] == material:
return
else:
prev_mat = ob['BSBST_material']
ob['BSBST_material'] = material
for mod in ob.modifiers:
mod_info = ob.modifier_info.get(mod.name)
if not mod_info:
continue
for s in mod_info.socket_info:
if not s.link_context:
continue
if not s.link_context_type == 'MATERIAL':
continue
mod[s.name] = material
ob.update_tag()
if ob.type == 'EMPTY':
return
if not ob.material_slots:
override = bpy.context.copy()
override['object'] = ob
with bpy.context.temp_override(**override):
bpy.ops.object.material_slot_add()
ob.material_slots[0].material = material
else:
for m_slot in ob.material_slots:
if m_slot.material == prev_mat:
m_slot.material = material
def deep_copy_mod_info(source_object, target_object):
for mod_info in source_object.modifier_info:
mod_info_tgt = target_object.modifier_info.add()
for attr in mod_info.keys():
if attr == 'socket_info':
continue
setattr(mod_info_tgt, attr, getattr(mod_info, attr))
for socket_info in mod_info.socket_info:
socket_info_tgt = mod_info_tgt.socket_info.add()
for attr in socket_info.keys():
setattr(socket_info_tgt, attr, getattr(socket_info, attr))
def get_addon_directory() -> str:
"""
Returns the path of the addon directory.
"""
return bpy.path.abspath(os.path.dirname(os.path.realpath(__file__)))
def get_resource_directory() -> str:
"""
Returns the path to be used to append resource data-blocks.
"""
addon_prefs = bpy.context.preferences.addons[__package__].preferences
resource_path = addon_prefs.resource_path
if not resource_path:
resource_path = f'{get_addon_directory()}/assets/'
return resource_path
def import_resources(ng_names = ng_list):
"""
Imports the necessary blend data resources required by the addon.
"""
addon_prefs = bpy.context.preferences.addons[__package__].preferences
path = get_resource_directory()
with bpy.data.libraries.load(f'{path}brushstroke_tools-resources.blend', link=addon_prefs.import_method=='LINK', relative=addon_prefs.import_relative_path) as (data_src, data_dst):
data_dst.node_groups = ng_names
if addon_prefs.import_method=='APPEND':
# pack imported resources
for img in bpy.data.images:
if not img.library_weak_reference:
continue
if img.packed_file:
continue
if 'brushstroke_tools-resources.blend' in img.library_weak_reference.filepath:
img.pack()
def read_lib_version():
resource_dir = f'{get_resource_directory()}'
with open(f"{resource_dir}.version", "r") as file:
version = ast.literal_eval(file.read())
return version
def write_lib_version():
resource_dir = f'{get_resource_directory()}'
with open(f"{resource_dir}.version", "w") as file:
file.write(str(addon_version))
def copy_resources_to_dir(tgt_dir = ''):
resource_dir = f'{get_addon_directory()}/assets/'
if not tgt_dir:
tgt_dir = get_resource_directory()
try:
shutil.copytree(resource_dir, tgt_dir, dirs_exist_ok=True)
write_lib_version()
except OSError as err:
# error caused if the source was not a directory
if err.errno == errno.ENOTDIR:
shutil.copy2(resource_dir, tgt_dir)
write_lib_version()
else:
print("Error: % s" % err)
def compare_versions(v1: tuple, v2: tuple):
""" Returns n when v1 > v2, 0 when v1 == v2, -n when v1 < v2, while n = 'Index of first significant version tuple element' + 1.
e.g. (0,2,0), (0,2,1) -> -3
"""
c = 1
for e1, e2 in zip(v1, v2):
if e1 > e2:
return c
elif e1 < e2:
return -c
c += 1
return 0
def import_brushstroke_material():
name = 'Brush Material'
path = f"{get_resource_directory()}/brushstroke_tools-resources.blend"
addon_prefs = bpy.context.preferences.addons[__package__].preferences
mats_pre = set(bpy.data.materials)
ng_pre = set(bpy.data.node_groups)
with bpy.data.libraries.load(path, link=addon_prefs.import_method=='LINK', relative=addon_prefs.import_relative_path) as (data_src, data_dst):
data_dst.materials = [name]
mats_new = list(set(bpy.data.materials) - mats_pre)
# de-duplicate imported node-groups
ng_new = list(set(bpy.data.node_groups) - ng_pre)
ng_remove = []
for ng in ng_new:
ng_name_elements = ng.name.split('.')
if len(ng_name_elements) == 1:
continue
root_ng = bpy.data.node_groups.get('.'.join(ng_name_elements[:-1]))
if not root_ng:
continue
ng.user_remap(root_ng)
ng_remove += [ng]
for ng in reversed(ng_remove):
bpy.data.node_groups.remove(ng)
# return imported material
if mats_new:
return mats_new[0]
else:
return bpy.data.materials.get(name)
def ensure_node_group(name, path=''):
ng = bpy.data.node_groups.get(name)
if ng:
return ng
addon_prefs = bpy.context.preferences.addons[__package__].preferences
if not path:
path=f'{get_resource_directory()}/brushstroke_tools-resources.blend'
with bpy.data.libraries.load(path, link=addon_prefs.import_method=='LINK', relative=addon_prefs.import_relative_path) as (data_src, data_dst):
data_dst.node_groups = [name]
if addon_prefs.import_method=='APPEND':
# pack imported resources
for img in bpy.data.images:
if not img.library_weak_reference:
continue
if path in img.library_weak_reference.filepath:
img.pack()
ng = bpy.data.node_groups.get(name)
return ng
def ensure_resources():
ng_missing = set()
for n in ng_list:
if not bpy.data.node_groups.get(n):
ng_missing.add(n)
if ng_missing:
import_resources(list(ng_missing))
def register_asset_lib():
asset_libs = bpy.context.preferences.filepaths.asset_libraries
if asset_lib_name in [a.name for a in asset_libs]:
return asset_libs[asset_lib_name]
lib = asset_libs.new()
lib.name = asset_lib_name
lib.path = get_resource_directory()
lib.use_relative_path = False
def unregister_asset_lib():
asset_libs = bpy.context.preferences.filepaths.asset_libraries
lib = asset_libs.get(asset_lib_name)
if not lib:
return
asset_libs.remove(lib)
def update_asset_lib_path():
asset_libs = bpy.context.preferences.filepaths.asset_libraries
if asset_lib_name not in [a.name for a in asset_libs]:
register_asset_lib()
return
lib = asset_libs[asset_lib_name]
lib.path = get_resource_directory()
def refresh_brushstroke_styles():
addon_prefs = bpy.context.preferences.addons[__package__].preferences
for a in range(len(addon_prefs.brush_styles)):
addon_prefs.brush_styles.remove(0)
lib_path = get_resource_directory()
add_brush_styles_from_directory(lib_path)
def add_brush_styles_from_directory(path):
addon_prefs = bpy.context.preferences.addons[__package__].preferences
subdirs = [f.path for f in os.scandir(path) if f.is_dir()]
files = [f.path for f in os.scandir(path) if not f.is_dir()]
for filepath in files:
if not filepath.endswith('.blend'):
continue
names = []
with bpy.data.libraries.load(filepath) as (data_from, data_to):
names = [name for name in data_from.node_groups if name.startswith('BSBST-BS')]
for ng_name in names:
b_style = addon_prefs.brush_styles.add()
b_style.name = '.'.join(ng_name.split('.')[1:])
b_style.filepath = filepath
for dir in subdirs:
add_brush_styles_from_directory(dir)
def transfer_modifier(modifier_name, target_obj, source_obj):
"""
Core taken from https://projects.blender.org/studio/blender-studio-pipeline
"""
# create target mod
source_mod = source_obj.modifiers.get(modifier_name)
target_mod = target_obj.modifiers.new(source_mod.name, source_mod.type)
props = [p.identifier for p in source_mod.bl_rna.properties if not p.is_readonly]
for prop in props:
value = getattr(source_mod, prop)
setattr(target_mod, prop, value)
if source_mod.type == 'NODES':
# Transfer geo node attributes
for key, value in source_mod.items():
target_mod[key] = value
# Transfer geo node bake settings
target_mod.bake_directory = source_mod.bake_directory
for index, target_bake in enumerate(target_mod.bakes):
source_bake = source_mod.bakes[index]
props = [p.identifier for p in source_bake.bl_rna.properties if not p.is_readonly]
for prop in props:
value = getattr(source_bake, prop)
setattr(target_bake, prop, value)
def is_brushstrokes_object(object):
if not object:
return False
return 'BSBST_active' in object.keys()
def is_surface_object(object):
if not object:
return False
for ob in bpy.data.objects:
if 'BSBST_surface_object' not in ob.keys():
continue
if ob['BSBST_surface_object'] == object:
return True
return False
def is_flow_object(object):
if not object:
return False
for ob in bpy.data.objects:
if 'BSBST_flow_object' not in ob.keys():
continue
if ob['BSBST_flow_object'] == object:
return ob
return False
def get_deformable(object):
if not object:
return False
if 'BSBST_deformable' in object.keys():
return object['BSBST_deformable']
return False
def get_animated(object):
if not object:
return False
if 'BSBST_animated' in object.keys():
return object['BSBST_animated']
return False
def set_deformable(object, deformable=True):
if not object:
return
object['BSBST_deformable'] = bool(deformable)
def set_animated(object, animated=True):
if not object:
return
object['BSBST_animated'] = bool(animated)
def get_surface_object(bs):
if not bs:
return None
if 'BSBST_surface_object' not in bs.keys():
return None
return bs['BSBST_surface_object']
def set_surface_object(bs, surf_ob):
if not bs:
return
objects = [bs]
flow_ob = get_flow_object(bs)
if flow_ob:
objects += [flow_ob]
# assign surface pointer
for ob in objects:
for mod in bs.modifiers:
mod_info = bs.modifier_info.get(mod.name)
if not mod_info:
continue
for s in mod_info.socket_info:
if not s.link_context:
continue
if not s.link_context_type == 'SURFACE_OBJECT':
continue
mod[s.name] = surf_ob
ob.parent = surf_ob
ob.parent_type = 'OBJECT'
surf_ob.update_tag()
if bs.type == 'CURVES':
bs.data.surface = surf_ob
bs.data.surface_uv_map = surf_ob.data.uv_layers.active.name
bs['BSBST_surface_object'] = surf_ob
def get_flow_object(bs):
if not bs:
return None
if 'BSBST_flow_object' not in bs.keys():
return None
return bs['BSBST_flow_object']
def set_flow_object(bs, ob):
if not bs:
return
# assign flow pointer
for mod in bs.modifiers:
mod_info = bs.modifier_info.get(mod.name)
if not mod_info:
continue
for s in mod_info.socket_info:
if not s.link_context:
continue
if not s.link_context_type == 'FLOW_OBJECT':
continue
mod[s.name] = ob
ob.update_tag()
bs['BSBST_flow_object'] = ob
def context_brushstrokes(context):
settings = context.scene.BSBST_settings
return settings.context_brushstrokes
def get_active_context_brushstrokes_object(context):
settings = context.scene.BSBST_settings
if not settings.context_brushstrokes:
return None
bs = settings.context_brushstrokes[settings.active_context_brushstrokes_index]
bs_ob = bpy.data.objects.get(bs.name)
return bs_ob
def get_active_context_surface_object(context):
if not context.object:
return None
bs_ob = get_active_context_brushstrokes_object(context)
if bs_ob:
return get_surface_object(bs_ob)
if context.object.type == 'MESH':
return context.object
def flow_name(name):
return f'{name}-FLOW'
def edit_active_brushstrokes(context):
context.view_layer.depsgraph.update()
bs_ob = get_active_context_brushstrokes_object(context)
if not bs_ob:
return {"CANCELLED"}
flow_object = get_flow_object(bs_ob)
surface_object = get_surface_object(bs_ob)
active_object = bs_ob
if flow_object:
active_object = flow_object
if not active_object:
return {"CANCELLED"}
context.view_layer.objects.active = active_object
for ob in bpy.data.objects:
ob.select_set(False)
surface_object.select_set(True)
active_object.select_set(True)
# enter mode and tool context
if active_object.type=='GREASEPENCIL':
bpy.ops.object.mode_set(mode='PAINT_GREASE_PENCIL')
bpy.ops.wm.tool_set_by_id(name="builtin.draw")
context.scene.tool_settings.gpencil_stroke_placement_view3d = 'SURFACE'
else:
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.wm.tool_set_by_id(name="brushstroke_tools.draw")
return {'FINISHED'}
def round_n(val, n):
""" Round value to n number of significant digits.
"""
return round(val, n-int(math.floor(math.log10(abs(val))))-1)
def clear_preview():
preview_img = bpy.data.images.get(preview_name)
preview_texture = bpy.data.textures.get(preview_name)
if preview_img:
bpy.data.images.remove(preview_img)
if preview_texture:
bpy.data.textures.remove(preview_texture)
def set_preview(pixels, size = (256, 256), id=''):
preview_img = bpy.data.images.get(preview_name)
preview_texture = bpy.data.textures.get(preview_name)
if not pixels or compare_versions(bpy.app.version, (4,2,4)) < 0:
clear_preview()
return
if preview_img:
if id and id == preview_img['BSBST-id']:
return
if not len(preview_img.pixels) == len(pixels):
bpy.data.images.remove(preview_img)
preview_img = None
if not preview_img:
preview_img = bpy.data.images.new(preview_name, width=size[0], height=size[1])
if not preview_texture:
preview_texture = bpy.data.textures.new(name=preview_name, type="IMAGE")
settings = bpy.context.scene.BSBST_settings
settings.preview_texture = preview_texture
preview_texture.extension = 'EXTEND'
preview_texture.crop_max_x = size[1]/size[0]
preview_texture.image = preview_img
preview_img.pixels.foreach_set(numpy.array(pixels, dtype=numpy.float32))
preview_img['BSBST-id'] = id
preview_img.pack()
# TODO delete pre-save
# TODO set height of preview region
def register():
bpy.app.handlers.depsgraph_update_post.append(refresh_preset)
def unregister():
bpy.app.handlers.depsgraph_update_post.remove(refresh_preset)