LNXSDK/leenkx/blender/lnx/props_bake.py

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2025-01-22 16:18:30 +01:00
import bpy
from bpy.types import Menu, Panel, UIList
from bpy.props import *
from lnx.lightmapper import operators, properties, utility
import lnx.assets
import lnx.utils
if lnx.is_reload(__name__):
lnx.assets = lnx.reload_module(lnx.assets)
lnx.utils = lnx.reload_module(lnx.utils)
else:
lnx.enable_reload(__name__)
class LnxBakeListItem(bpy.types.PropertyGroup):
obj: PointerProperty(type=bpy.types.Object, description="The object to bake")
res_x: IntProperty(name="X", description="Texture resolution", default=1024)
res_y: IntProperty(name="Y", description="Texture resolution", default=1024)
class LNX_UL_BakeList(bpy.types.UIList):
def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
# We could write some code to decide which icon to use here...
custom_icon = 'OBJECT_DATAMODE'
# Make sure your code supports all 3 layout types
if self.layout_type in {'DEFAULT', 'COMPACT'}:
row = layout.row()
row.prop(item, "obj", text="", emboss=False, icon=custom_icon)
col = row.column()
col.alignment = 'RIGHT'
col.label(text=str(item.res_x) + 'x' + str(item.res_y))
elif self.layout_type in {'GRID'}:
layout.alignment = 'CENTER'
layout.label(text="", icon=custom_icon)
class LnxBakeListNewItem(bpy.types.Operator):
# Add a new item to the list
bl_idname = "lnx_bakelist.new_item"
bl_label = "Add a new item"
def execute(self, context):
scn = context.scene
scn.lnx_bakelist.add()
scn.lnx_bakelist_index = len(scn.lnx_bakelist) - 1
return{'FINISHED'}
class LnxBakeListDeleteItem(bpy.types.Operator):
# Delete the selected item from the list
bl_idname = "lnx_bakelist.delete_item"
bl_label = "Deletes an item"
@classmethod
def poll(self, context):
""" Enable if there's something in the list """
scn = context.scene
return len(scn.lnx_bakelist) > 0
def execute(self, context):
scn = context.scene
list = scn.lnx_bakelist
index = scn.lnx_bakelist_index
list.remove(index)
if index > 0:
index = index - 1
scn.lnx_bakelist_index = index
return{'FINISHED'}
class LnxBakeListMoveItem(bpy.types.Operator):
# Move an item in the list
bl_idname = "lnx_bakelist.move_item"
bl_label = "Move an item in the list"
direction: EnumProperty(
items=(
('UP', 'Up', ""),
('DOWN', 'Down', ""),))
def move_index(self):
# Move index of an item render queue while clamping it
obj = bpy.context.scene
index = obj.lnx_bakelist_index
list_length = len(obj.lnx_bakelist) - 1
new_index = 0
if self.direction == 'UP':
new_index = index - 1
elif self.direction == 'DOWN':
new_index = index + 1
new_index = max(0, min(new_index, list_length))
obj.lnx_bakelist.move(index, new_index)
obj.lnx_bakelist_index = new_index
def execute(self, context):
obj = bpy.context.scene
list = obj.lnx_bakelist
index = obj.lnx_bakelist_index
if self.direction == 'DOWN':
neighbor = index + 1
self.move_index()
elif self.direction == 'UP':
neighbor = index - 1
self.move_index()
else:
return{'CANCELLED'}
return{'FINISHED'}
class LnxBakeButton(bpy.types.Operator):
'''Bake textures for listed objects'''
bl_idname = 'lnx.bake_textures'
bl_label = 'Bake'
def execute(self, context):
scn = context.scene
if len(scn.lnx_bakelist) == 0:
return{'FINISHED'}
self.report({'INFO'}, "Once baked, hit 'Leenkx Bake - Apply' to pack lightmaps")
# At least one material required for now..
for o in scn.lnx_bakelist:
ob = o.obj
if len(ob.material_slots) == 0:
if not 'MaterialDefault' in bpy.data.materials:
mat = bpy.data.materials.new(name='MaterialDefault')
mat.use_nodes = True
else:
mat = bpy.data.materials['MaterialDefault']
ob.data.materials.append(mat)
# Single user materials
for o in scn.lnx_bakelist:
ob = o.obj
for slot in ob.material_slots:
# Temp material already exists
if slot.material.name.endswith('_temp'):
continue
n = slot.material.name + '_' + ob.name + '_temp'
if not n in bpy.data.materials:
slot.material = slot.material.copy()
slot.material.name = n
# Images for baking
for o in scn.lnx_bakelist:
ob = o.obj
img_name = ob.name + '_baked'
sc = scn.lnx_bakelist_scale / 100
rx = o.res_x * sc
ry = o.res_y * sc
# Get image
if img_name not in bpy.data.images or bpy.data.images[img_name].size[0] != rx or bpy.data.images[img_name].size[1] != ry:
img = bpy.data.images.new(img_name, int(rx), int(ry))
img.name = img_name # Force img_name (in case Blender picked img_name.001)
else:
img = bpy.data.images[img_name]
for slot in ob.material_slots:
# Add image nodes
mat = slot.material
mat.use_nodes = True
nodes = mat.node_tree.nodes
if 'Baked Image' in nodes:
img_node = nodes['Baked Image']
else:
img_node = nodes.new('ShaderNodeTexImage')
img_node.name = 'Baked Image'
img_node.location = (100, 100)
img_node.image = img
img_node.select = True
nodes.active = img_node
obs = bpy.context.view_layer.objects
# Unwrap
active = obs.active
for o in scn.lnx_bakelist:
ob = o.obj
uv_layers = ob.data.uv_layers
if not 'UVMap_baked' in uv_layers:
uvmap = uv_layers.new(name='UVMap_baked')
uv_layers.active_index = len(uv_layers) - 1
obs.active = ob
if scn.lnx_bakelist_unwrap == 'Lightmap Pack':
bpy.context.view_layer.objects.active = ob
ob.select_set(True)
bpy.ops.uv.lightmap_pack(PREF_CONTEXT='ALL_FACES')
else:
bpy.ops.object.mode_set(mode='OBJECT')
bpy.ops.object.select_all(action='DESELECT')
bpy.context.view_layer.objects.active = ob
ob.select_set(True)
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.mesh.select_all(action='SELECT')
bpy.ops.uv.smart_project()
bpy.ops.mesh.select_all(action='DESELECT')
bpy.ops.object.mode_set(mode='OBJECT')
else:
for i in range(0, len(uv_layers)):
if uv_layers[i].name == 'UVMap_baked':
uv_layers.active_index = i
break
obs.active = active
# Materials for runtime
# TODO: use single mat per object
for o in scn.lnx_bakelist:
ob = o.obj
img_name = ob.name + '_baked'
for slot in ob.material_slots:
n = slot.material.name[:-5] + '_baked'
if not n in bpy.data.materials:
mat = bpy.data.materials.new(name=n)
mat.use_nodes = True
mat.use_fake_user = True
nodes = mat.node_tree.nodes
img_node = nodes.new('ShaderNodeTexImage')
img_node.name = 'Baked Image'
img_node.location = (100, 100)
img_node.image = bpy.data.images[img_name]
mat.node_tree.links.new(img_node.outputs[0], nodes['Principled BSDF'].inputs[0])
else:
mat = bpy.data.materials[n]
nodes = mat.node_tree.nodes
nodes['Baked Image'].image = bpy.data.images[img_name]
# Bake
bpy.ops.object.select_all(action='DESELECT')
for o in scn.lnx_bakelist:
o.obj.select_set(True)
obs.active = scn.lnx_bakelist[0].obj
bpy.ops.object.bake('INVOKE_DEFAULT', type='COMBINED')
bpy.ops.object.select_all(action='DESELECT')
return{'FINISHED'}
class LnxBakeApplyButton(bpy.types.Operator):
'''Pack baked textures and restore materials'''
bl_idname = 'lnx.bake_apply'
bl_label = 'Apply'
def execute(self, context):
scn = context.scene
if len(scn.lnx_bakelist) == 0:
return{'FINISHED'}
for material in bpy.data.materials:
if not material.users:
bpy.data.materials.remove(material)
# Remove leftover _baked materials for removed objects
for mat in bpy.data.materials:
if mat.name.endswith('_baked'):
has_user = False
for ob in bpy.data.objects:
if ob.type == 'MESH' and mat.name.endswith('_' + ob.name + '_baked'):
has_user = True
break
if not has_user:
bpy.data.materials.remove(mat, do_unlink=True)
# Recache lightmaps
lnx.assets.invalidate_unpacked_data(None, None)
for o in scn.lnx_bakelist:
ob = o.obj
img_name = ob.name + '_baked'
# Save images
bpy.data.images[img_name].pack()
#bpy.data.images[img_name].save()
for slot in ob.material_slots:
mat = slot.material
# Remove temp material
if mat.name.endswith('_temp'):
old = slot.material
slot.material = bpy.data.materials[old.name.split('_' + ob.name)[0] + "_" + ob.name + "_baked"]
bpy.data.materials.remove(old, do_unlink=True)
# Restore uv slots
for o in scn.lnx_bakelist:
ob = o.obj
uv_layers = ob.data.uv_layers
uv_layers.active_index = 0
uv_layers["UVMap_baked"].active_render = True
return{'FINISHED'}
class LnxBakeSpecialsMenu(bpy.types.Menu):
bl_label = "Bake"
bl_idname = "LNX_MT_BakeListSpecials"
def draw(self, context):
layout = self.layout
layout.operator("lnx.bake_add_all")
layout.operator("lnx.bake_add_selected")
layout.operator("lnx.bake_clear_all")
layout.operator("lnx.bake_remove_baked_materials")
class LnxBakeAddAllButton(bpy.types.Operator):
'''Fill the list with scene objects'''
bl_idname = 'lnx.bake_add_all'
bl_label = 'Add All'
def execute(self, context):
scn = context.scene
scn.lnx_bakelist.clear()
for ob in scn.objects:
if ob.type == 'MESH':
scn.lnx_bakelist.add().obj = ob
return{'FINISHED'}
class LnxBakeAddSelectedButton(bpy.types.Operator):
'''Add selected objects to the list'''
bl_idname = 'lnx.bake_add_selected'
bl_label = 'Add Selected'
def contains(self, scn, ob):
for o in scn.lnx_bakelist:
if o == ob:
return True
return False
def execute(self, context):
scn = context.scene
for ob in context.selected_objects:
if ob.type == 'MESH' and not self.contains(scn, ob):
scn.lnx_bakelist.add().obj = ob
return{'FINISHED'}
class LnxBakeClearAllButton(bpy.types.Operator):
'''Clear the list'''
bl_idname = 'lnx.bake_clear_all'
bl_label = 'Clear'
def execute(self, context):
scn = context.scene
scn.lnx_bakelist.clear()
return{'FINISHED'}
class LnxBakeRemoveBakedMaterialsButton(bpy.types.Operator):
'''Clear the list'''
bl_idname = 'lnx.bake_remove_baked_materials'
bl_label = 'Remove Baked Materials'
def execute(self, context):
for mat in bpy.data.materials:
if mat.name.endswith('_baked'):
bpy.data.materials.remove(mat, do_unlink=True)
return{'FINISHED'}
__REG_CLASSES = (
LnxBakeListItem,
LNX_UL_BakeList,
LnxBakeListNewItem,
LnxBakeListDeleteItem,
LnxBakeListMoveItem,
LnxBakeButton,
LnxBakeApplyButton,
LnxBakeSpecialsMenu,
LnxBakeAddAllButton,
LnxBakeAddSelectedButton,
LnxBakeClearAllButton,
LnxBakeRemoveBakedMaterialsButton
)
__reg_classes, __unreg_classes = bpy.utils.register_classes_factory(__REG_CLASSES)
def register():
__reg_classes()
bpy.types.Scene.lnx_bakelist_scale = FloatProperty(
name="Resolution", description="Resolution scale", subtype='PERCENTAGE',
default=100.0, min=1, max=1000, soft_min=1, soft_max=100.0
)
bpy.types.Scene.lnx_bakelist = CollectionProperty(type=LnxBakeListItem)
bpy.types.Scene.lnx_bakelist_index = IntProperty(name="Index for my_list", default=0)
bpy.types.Scene.lnx_bakelist_unwrap = EnumProperty(
name="UV Unwrap", default='Smart UV Project',
items=[
('Lightmap Pack', 'Lightmap Pack', 'Lightmap Pack'),
('Smart UV Project', 'Smart UV Project', 'Smart UV Project')
]
)
# Register lightmapper
bpy.types.Scene.lnx_bakemode = EnumProperty(
name="Bake mode", default='Static Map',
items=[
('Static Map', 'Static Map', 'Static Map'),
('Lightmap', 'Lightmap', 'Lightmap')
]
)
operators.register()
properties.register()
def unregister():
__unreg_classes()
# Unregister lightmapper
operators.unregister()
properties.unregister()