object_boolean_tools.py

# ##### 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 #####

# <pep8 compliant>

bl_info = {
    "name": "Bool Tool",
    "author": "Vitor Balbio, Mikhail Rachinskiy, TynkaTopi, Meta-Androcto, Simon Appelt",
    "version": (0, 4, 0),
    "blender": (2, 80, 0),
    "location": "View3D > Sidebar",
    "description": "Bool Tool Hotkey: Ctrl Shift B",
    "category": "Object",
    }

import bpy
from bpy.types import (
        AddonPreferences,
        Operator,
        Panel,
        Menu,
        )
from bpy.props import (
        BoolProperty,
        StringProperty,
        )


# -------------------  Bool Tool FUNCTIONS -------------------------
# Utils:

# Hide boolean objects
def update_BoolHide(self, context):
    ao = context.view_layer.objects.active
    objs = [i.object for i in ao.modifiers if i.type == 'BOOLEAN']
    hide_state = context.scene.BoolHide

    for o in objs:
        o.hide_viewport = hide_state


# Object is a Canvas
def isCanvas(_obj):
    try:
        if _obj["BoolToolRoot"]:
            return True
    except:
        return False


# Object is a Brush Tool Bool
def isBrush(_obj):
    try:
        if _obj["BoolToolBrush"]:
            return True
    except:
        return False


# Object is a Poly Brush Tool Bool collection
def isPolyBrush(_obj):
    try:
        if _obj["BoolToolPolyBrush"]:
            return True
    except:
        return False


def BT_ObjectByName(obj):
    for ob in bpy.context.view_layer.objects:
        if isCanvas(ob) or isBrush(ob):
            if ob.name == obj:
                return ob


def FindCanvas(obj):
    for ob in bpy.context.view_layer.objects:
        if isCanvas(ob):
            for mod in ob.modifiers:
                if ("BTool_" in mod.name):
                    if (obj.name in mod.name):
                        return ob


def isFTransf():
    preferences = bpy.context.preferences
    addons = preferences.addons
    addon_prefs = addons[__name__].preferences
    if addon_prefs.fast_transform:
        return True
    else:
        return False


"""
# EXPERIMENTAL FEATURES
def isMakeVertexGroup():
    preferences = bpy.context.preferences
    addon_prefs = preferences.addons[__name__].preferences
    if addon_prefs.make_vertex_groups:
        return True
    else:
        return False

def isMakeBoundary():
    preferences = bpy.context.preferences
    addon_prefs = preferences.addons[__name__].preferences
    if addon_prefs.make_boundary:
        return True
    else:
        return False
"""


def ConvertToMesh(obj):
    act = bpy.context.view_layer.objects.active
    bpy.context.view_layer.objects.active = obj
    bpy.ops.object.convert(target="MESH")
    bpy.context.view_layer.objects.active = act


# Do the Union, Difference and Intersection Operations with a Brush
def Operation(context, _operation):

    prefs = bpy.context.preferences.addons[__name__].preferences
    useWire = prefs.use_wire

    for selObj in bpy.context.selected_objects:
        if selObj != context.active_object and (selObj.type == "MESH" or selObj.type == "CURVE"):
            if selObj.type == "CURVE":
                ConvertToMesh(selObj)
            actObj = context.active_object
            selObj.hide_render = True
            cyclesVis = selObj.cycles_visibility
            """
            for obj in bpy.context.view_layer.objects:
                if isCanvas(obj):
                    for mod in obj.modifiers:
                        if(mod.name == "BTool_" + selObj.name):
                            obj.modifiers.remove(mod)
            """
            if useWire:
                selObj.display_type = "WIRE"
            else:
                selObj.display_type = "BOUNDS"

            cyclesVis.camera = False
            cyclesVis.diffuse = False
            cyclesVis.glossy = False
            cyclesVis.shadow = False
            cyclesVis.transmission = False
            if _operation == "SLICE":
                # copies instance_collection property(empty), but group property is empty (users_group = None)
                clone = context.active_object.copy()
                # clone.select_set(state=True)
                context.collection.objects.link(clone)
                sliceMod = clone.modifiers.new("BTool_" + selObj.name, "BOOLEAN")  # add mod to clone obj
                sliceMod.object = selObj
                sliceMod.operation = "DIFFERENCE"
                clone["BoolToolRoot"] = True
            newMod = actObj.modifiers.new("BTool_" + selObj.name, "BOOLEAN")
            newMod.object = selObj
            if _operation == "SLICE":
                newMod.operation = "INTERSECT"
            else:
                newMod.operation = _operation

            actObj["BoolToolRoot"] = True
            selObj["BoolToolBrush"] = _operation
            selObj["BoolTool_FTransform"] = "False"


# Remove Obejcts form the BoolTool System
def Remove(context, thisObj_name, Prop):
    # Find the Brush pointed in the Tree View and Restore it, active is the Canvas
    actObj = context.active_object

    # Restore the Brush
    def RemoveThis(_thisObj_name):
        for obj in bpy.context.view_layer.objects:
            # if it's the brush object
            if obj.name == _thisObj_name:
                cyclesVis = obj.cycles_visibility
                obj.display_type = "TEXTURED"
                del obj["BoolToolBrush"]