/
__init__.py
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/
__init__.py
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# 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 3 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
# MERCHANTIBILITY 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, see <http://www.gnu.org/licenses/>.
bl_info = {
"name": "b3dsdf",
"author": "williamchange",
"description": "A toolkit of signed distance functions, operators and utility nodegroups",
"blender": (2, 83, 0),
"version": (0, 10, 0),
"location": "Shader Editor > Add > SDF",
"tracker_url": "https://github.com/williamchange/b3dsdf/issues/new",
"doc_url": "https://github.com/williamchange/b3dsdf/wiki/Examples",
"category": "Node",
}
import json
import bpy
import os
from bpy.types import Operator, Menu
from bpy.props import StringProperty
def add_sdf_button(self, context):
if context.area.ui_type == "ShaderNodeTree":
self.layout.menu("NODE_MT_sdf_menu", text="SDF", icon="CON_TRANSFORM")
sdf_group_cache = {}
shader_cat_list = []
draw_menu_functions = []
dir_path = os.path.dirname(__file__)
# adapted from https://github.com/blender/blender/blob/master/release/scripts/modules/nodeitems_utils.py
def shader_cat_generator():
global shader_cat_list
global draw_menu_functions
shader_cat_list = []
draw_menu_functions = []
for item in sdf_group_cache.items():
def custom_draw(self, context):
layout = self.layout
for group_name in sdf_group_cache[self.bl_label]:
if group_name == "_":
layout.separator(factor=1.0)
continue
if group_name.startswith("+"):
layout.label(text=group_name.split("+")[-1])
continue
entry = group_name.split("@")
# remove prefix in menu
group_label = entry[0]
for prefix in ["sd", "op", "3D", "LN"]:
group_label.replace(prefix, "")
props = layout.operator(NODE_OT_group_add.bl_idname, text=group_label)
props.group_name = entry[0]
# Override tooltip
if len(entry) > 1:
props.tooltip = entry[1]
itemid = item[0].split("_")[0]
menu_type = type(
"NODE_MT_category_" + itemid,
(bpy.types.Menu,),
{
"bl_idname": "NODE_MT_category_"
+ itemid.replace(" ", "_").replace("-", "_"),
"bl_space_type": "NODE_EDITOR",
"bl_label": item[0],
"draw": custom_draw,
},
)
if menu_type not in shader_cat_list:
def generate_menu_draw(name, label):
def draw_menu(self, context):
self.layout.menu(name, text=label.split("_")[0])
if "_" in label:
self.layout.separator(factor=1.0)
return draw_menu
bpy.utils.register_class(menu_type)
draw_menu = generate_menu_draw(menu_type.bl_idname, menu_type.bl_label)
bpy.types.NODE_MT_sdf_menu.append(draw_menu)
draw_menu_functions.append(draw_menu)
shader_cat_list.append(menu_type)
class NODE_MT_sdf_menu(Menu):
bl_label = "SDF"
bl_idname = "NODE_MT_sdf_menu"
@classmethod
def poll(cls, context):
return context.space_data.tree_type == "ShaderNodeTree"
def draw(self, context):
pass
class NODE_OT_group_add(Operator):
"""Add a node group"""
bl_idname = "b3dsdf.group_add"
bl_label = "Add node group"
bl_description = "Append Node Group"
bl_options = {"REGISTER", "UNDO"}
group_name: StringProperty()
tooltip: StringProperty()
# adapted from https://github.com/blender/blender/blob/master/release/scripts/startup/bl_operators/node.py
@staticmethod
def store_mouse_cursor(context, event):
space = context.space_data
tree = space.edit_tree
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
@classmethod
def poll(cls, context):
return context.space_data.node_tree
@classmethod
def description(self, context, props):
return props.tooltip
def execute(self, context):
old_groups = set(bpy.data.node_groups)
for file in os.listdir(dir_path):
if file.endswith(".blend"):
filepath = os.path.join(dir_path, file)
break
else:
raise FileNotFoundError("No .blend File in directory " + dir_path)
with bpy.data.libraries.load(filepath, link=False) as (data_from, data_to):
if self.group_name not in bpy.data.node_groups:
data_to.node_groups.append(self.group_name)
added_groups = list(set(bpy.data.node_groups) - old_groups)
for group in added_groups:
for node in group.nodes:
if node.type == "GROUP":
new_name = node.node_tree.name.split(".")[0]
node.node_tree = bpy.data.node_groups[new_name]
for group in added_groups:
if "." in group.name and not ".5" in group.name:
bpy.data.node_groups.remove(group)
bpy.ops.node.add_node(type="ShaderNodeGroup")
node = context.selected_nodes[0]
node.node_tree = bpy.data.node_groups[self.group_name]
node.location = context.space_data.cursor_location
bpy.ops.transform.translate("INVOKE_DEFAULT")
return {"FINISHED"}
def invoke(self, context, event):
self.store_mouse_cursor(context, event)
return self.execute(context)
def register():
global sdf_group_cache
with open(os.path.join(os.path.dirname(__file__), "shader_nodes.json"), "r") as f:
sdf_group_cache = json.loads(f.read())
if not hasattr(bpy.types, "NODE_MT_sdf_menu"):
bpy.utils.register_class(NODE_MT_sdf_menu)
bpy.types.NODE_MT_add.append(add_sdf_button)
bpy.utils.register_class(NODE_OT_group_add)
shader_cat_generator()
def unregister():
for func in draw_menu_functions:
bpy.types.NODE_MT_sdf_menu.remove(func)
if hasattr(bpy.types, "NODE_MT_sdf_menu"):
bpy.types.NODE_MT_add.remove(add_sdf_button)
bpy.utils.unregister_class(NODE_MT_sdf_menu)
bpy.utils.unregister_class(NODE_OT_group_add)