def import_bhkcapsule_shape(self, bhk_shape):
"""Import a BhkCapsule block as a simple cylinder collision object"""
NifLog.debug(f"Importing {bhk_shape.__class__.__name__}")
radius = bhk_shape.radius * self.HAVOK_SCALE
p_1 = bhk_shape.first_point
p_2 = bhk_shape.second_point
length = (p_1 - p_2).norm() * self.HAVOK_SCALE
first_point = p_1 * self.HAVOK_SCALE
second_point = p_2 * self.HAVOK_SCALE
minx = miny = -radius
maxx = maxy = +radius
minz = -radius - length / 2
maxz = length / 2 + radius
# create blender object
b_obj = Object.box_from_extents("capsule", minx, maxx, miny, maxy,
minz, maxz)
# here, these are not encoded as a direction so we must first calculate the direction
b_obj.matrix_local = self.center_origin_to_matrix(
(first_point + second_point) / 2, first_point - second_point)
self.set_b_collider(b_obj,
bounds_type="CAPSULE",
display_type="CAPSULE",
radius=radius,
n_obj=bhk_shape)
return [b_obj]
def import_bhksphere_shape(self, bhk_shape):
"""Import a BhkSphere block as a simple sphere collision object"""
NifLog.debug(f"Importing {bhk_shape.__class__.__name__}")
r = bhk_shape.radius * self.HAVOK_SCALE
b_obj = Object.box_from_extents("sphere", -r, r, -r, r, -r, r)
self.set_b_collider(b_obj, display_type="SPHERE", bounds_type='SPHERE', radius=r, n_obj=bhk_shape)
return [b_obj]
def import_nitristrips(self, bhk_shape):
"""Import a NiTriStrips block as a Triangle-Mesh collision object"""
# no factor 7 correction!!!
verts = [(v.x, v.y, v.z) for v in bhk_shape.vertices]
faces = list(bhk_shape.get_triangles())
b_obj = Object.mesh_from_data("poly", verts, faces)
# TODO [collision] self.havok_mat!
self.set_b_collider(b_obj, bounds_type="MESH", radius=bhk_shape.radius)
return [b_obj]
def import_boxbv(self, box):
offset = box.center
# ignore for now, seems to be a unity 3x3 matrix
axes = box.axis
x, y, z = box.extent
b_obj = Object.box_from_extents("box", -x, x, -y, y, -z, z)
b_obj.location = (offset.x, offset.y, offset.z)
self.set_b_collider(b_obj, radius=(x + y + z) / 3)
return [b_obj]
def import_spherebv(self, sphere):
r = sphere.radius
c = sphere.center
b_obj = Object.box_from_extents("sphere", -r, r, -r, r, -r, r)
b_obj.location = (c.x, c.y, c.z)
self.set_b_collider(b_obj,
bounds_type="SPHERE",
display_type='SPHERE',
radius=r)
return [b_obj]
def import_armature(self, n_armature):
"""Scans an armature hierarchy, and returns a whole armature.
This is done outside the normal node tree scan to allow for positioning
of the bones before skins are attached."""
armature_name = block_store.import_name(n_armature)
b_armature_data = bpy.data.armatures.new(armature_name)
b_armature_data.display_type = 'STICK'
# use heuristics to determine a suitable orientation
forward, up = self.guess_orientation(n_armature)
# pass them to the matrix utility
math.set_bone_orientation(forward, up)
# store axis orientation for export
b_armature_data.niftools.axis_forward = forward
b_armature_data.niftools.axis_up = up
b_armature_obj = Object.create_b_obj(n_armature, b_armature_data)
b_armature_obj.show_in_front = True
armature_space_bind_store, armature_space_pose_store = self.import_pose(
n_armature)
# make armature editable and create bones
bpy.ops.object.mode_set(mode='EDIT', toggle=False)
for n_child in n_armature.children:
self.import_bone_bind(n_child, armature_space_bind_store,
b_armature_data, n_armature)
self.fix_bone_lengths(b_armature_data)
bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
# The armature has been created in editmode,
# now we are ready to set the bone keyframes and store the bones' long names.
if NifOp.props.animation:
self.transform_anim.create_action(b_armature_obj,
armature_name + "-Anim")
for bone_name, b_bone in b_armature_obj.data.bones.items():
n_block = self.name_to_block[bone_name]
# the property is only available from object mode!
block_store.store_longname(b_bone, safe_decode(n_block.name))
if NifOp.props.animation:
self.transform_anim.import_transforms(n_block, b_armature_obj,
bone_name)
# import pose
for b_name, n_block in self.name_to_block.items():
n_pose = armature_space_pose_store[n_block]
b_pose_bone = b_armature_obj.pose.bones[b_name]
n_bind = mathutils.Matrix(n_pose.as_list()).transposed()
b_pose_bone.matrix = math.nif_bind_to_blender_bind(n_bind)
# force update is required to ensure the transforms are set properly in blender
bpy.context.view_layer.update()
return b_armature_obj
def import_bounding_box(self, n_block):
"""Import a NiNode's bounding box or attached BSBound extra data."""
if not n_block or not isinstance(n_block, NifFormat.NiNode):
return []
# we have a ninode with bounding box
if n_block.has_bounding_box:
b_name = 'Bounding Box'
# Ninode's bbox behaves like a seperate mesh.
# bounding_box center(n_block.bounding_box.translation) is relative to the bound_box
n_bl_trans = n_block.translation
n_bbox = n_block.bounding_box
n_b_trans = n_bbox.translation
minx = n_b_trans.x - n_bl_trans.x - n_bbox.radius.x
miny = n_b_trans.y - n_bl_trans.y - n_bbox.radius.y
minz = n_b_trans.z - n_bl_trans.z - n_bbox.radius.z
maxx = n_b_trans.x - n_bl_trans.x + n_bbox.radius.x
maxy = n_b_trans.y - n_bl_trans.y + n_bbox.radius.y
maxz = n_b_trans.z - n_bl_trans.z + n_bbox.radius.z
bbox_center = n_b_trans.as_list()
# we may still have a BSBound extra data attached to this node
else:
for n_extra in n_block.get_extra_datas():
# TODO [extra][data] Move to property processor
if isinstance(n_extra, NifFormat.BSBound):
b_name = 'BSBound'
center = n_extra.center
dims = n_extra.dimensions
minx = -dims.x
miny = -dims.y
minz = -dims.z
maxx = +dims.x
maxy = +dims.y
maxz = +dims.z
bbox_center = center.as_list()
break
# none was found
else:
return []
# create blender object
b_obj = Object.box_from_extents(b_name, minx, maxx, miny, maxy, minz,
maxz)
# probably only on NiNodes with BB
if hasattr(n_block, "flags"):
b_obj.niftools.flags = n_block.flags
b_obj.location = bbox_center
self.set_b_collider(b_obj, radius=max(maxx, maxy, maxz))
return [
b_obj,
]
def import_bhkconvex_vertices_shape(self, bhk_shape):
"""Import a BhkConvexVertex block as a convex hull collision object"""
NifLog.debug(f"Importing {bhk_shape.__class__.__name__}")
# find vertices (and fix scale)
scaled_verts = [(self.HAVOK_SCALE * n_vert.x, self.HAVOK_SCALE * n_vert.y, self.HAVOK_SCALE * n_vert.z)
for n_vert in bhk_shape.vertices]
verts, faces = qhull3d(scaled_verts)
b_obj = Object.mesh_from_data("convexpoly", verts, faces)
radius = bhk_shape.radius * self.HAVOK_SCALE
self.set_b_collider(b_obj, bounds_type="CONVEX_HULL", radius=radius, n_obj=bhk_shape)
return [b_obj]
def import_bhkpackednitristrips_shape(self, bhk_shape):
"""Import a BhkPackedNiTriStrips block as a Triangle-Mesh collision object"""
NifLog.debug(f"Importing {bhk_shape.__class__.__name__}")
# create mesh for each sub shape
hk_objects = []
vertex_offset = 0
subshapes = bhk_shape.sub_shapes
if not subshapes:
# fallout 3 stores them in the data
subshapes = bhk_shape.data.sub_shapes
for subshape_num, subshape in enumerate(subshapes):
verts = []
faces = []
for vert_index in range(vertex_offset,
vertex_offset + subshape.num_vertices):
n_vert = bhk_shape.data.vertices[vert_index]
verts.append(
(n_vert.x * self.HAVOK_SCALE, n_vert.y * self.HAVOK_SCALE,
n_vert.z * self.HAVOK_SCALE))
for bhk_triangle in bhk_shape.data.triangles:
bhk_tri = bhk_triangle.triangle
if (vertex_offset <= bhk_tri.v_1) and (
bhk_tri.v_1 < vertex_offset + subshape.num_vertices):
faces.append((bhk_tri.v_1 - vertex_offset,
bhk_tri.v_2 - vertex_offset,
bhk_tri.v_3 - vertex_offset))
else:
continue
b_obj = Object.mesh_from_data(f'poly{subshape_num:d}', verts,
faces)
radius = min(vert.co.length for vert in b_obj.data.vertices)
self.set_b_collider(b_obj,
bounds_type="MESH",
radius=radius,
n_obj=subshape)
vertex_offset += subshape.num_vertices
hk_objects.append(b_obj)
return hk_objects
def import_billboard(n_node, b_obj):
""" Import a NiBillboardNode """
if isinstance(n_node, NifFormat.NiBillboardNode) and not isinstance(
b_obj, bpy.types.Bone):
# find camera object
for obj in bpy.context.scene.objects:
if obj.type == 'CAMERA':
b_obj_camera = obj
break
# none exists, create one
else:
b_obj_camera_data = bpy.data.cameras.new("Camera")
b_obj_camera = Object.create_b_obj(None, b_obj_camera_data)
# make b_obj track camera object
constr = b_obj.constraints.new('TRACK_TO')
constr.target = b_obj_camera
constr.track_axis = 'TRACK_Z'
constr.up_axis = 'UP_Y'
def import_bhkbox_shape(self, bhk_shape):
"""Import a BhkBox block as a simple Box collision object"""
NifLog.debug(f"Importing {bhk_shape.__class__.__name__}")
# create box
r = bhk_shape.radius * self.HAVOK_SCALE
dims = bhk_shape.dimensions
minx = -dims.x * self.HAVOK_SCALE
maxx = +dims.x * self.HAVOK_SCALE
miny = -dims.y * self.HAVOK_SCALE
maxy = +dims.y * self.HAVOK_SCALE
minz = -dims.z * self.HAVOK_SCALE
maxz = +dims.z * self.HAVOK_SCALE
# create blender object
b_obj = Object.box_from_extents("box", minx, maxx, miny, maxy, minz, maxz)
self.set_b_collider(b_obj, radius=r, n_obj=bhk_shape)
return [b_obj]
def import_capsulebv(self, capsule):
offset = capsule.center
# always a normalized vector
direction = capsule.origin
# nb properly named in newer nif.xmls
extent = capsule.unknown_float_1
radius = capsule.unknown_float_2
# positions of the box verts
minx = miny = -radius
maxx = maxy = +radius
minz = -(extent + 2 * radius) / 2
maxz = +(extent + 2 * radius) / 2
# create blender object
b_obj = Object.box_from_extents("capsule", minx, maxx, miny, maxy,
minz, maxz)
# apply transform in local space
b_obj.matrix_local = self.center_origin_to_matrix(offset, direction)
self.set_b_collider(b_obj,
bounds_type="CAPSULE",
display_type="CAPSULE",
radius=radius)
return [b_obj]
def import_empty(n_block):
"""Creates and returns a grouping empty."""
b_empty = Object.create_b_obj(n_block, None)
# TODO [flags] Move out to generic processing
b_empty.niftools.flags = n_block.flags
return b_empty
def execute(self):
"""Main import function."""
self.load_files() # needs to be first to provide version info.
self.armaturehelper = Armature()
self.boundhelper = Bound()
self.bhkhelper = BhkCollision()
self.constrainthelper = Constraint()
self.objecthelper = Object()
self.object_anim = ObjectAnimation()
self.transform_anim = TransformAnimation()
# find and store this list now of selected objects as creating new objects adds them to the selection list
self.SELECTED_OBJECTS = bpy.context.selected_objects[:]
# catch nif import errors
try:
# check that one armature is selected in 'import geometry + parent
# to armature' mode
if NifOp.props.process == "GEOMETRY_ONLY":
if len(self.SELECTED_OBJECTS
) != 1 or self.SELECTED_OBJECTS[0].type != 'ARMATURE':
raise io_scene_niftools.utils.logging.NifError(
"You must select exactly one armature in 'Import Geometry Only' mode."
)
NifLog.info("Importing data")
# calculate and set frames per second
if NifOp.props.animation:
Animation.set_frames_per_second(NifData.data.roots)
# merge skeleton roots and transform geometry into the rest pose
if NifOp.props.merge_skeleton_roots:
pyffi.spells.nif.fix.SpellMergeSkeletonRoots(
data=NifData.data).recurse()
if NifOp.props.send_geoms_to_bind_pos:
pyffi.spells.nif.fix.SpellSendGeometriesToBindPosition(
data=NifData.data).recurse()
if NifOp.props.send_detached_geoms_to_node_pos:
pyffi.spells.nif.fix.SpellSendDetachedGeometriesToNodePosition(
data=NifData.data).recurse()
if NifOp.props.apply_skin_deformation:
VertexGroup.apply_skin_deformation(NifData.data)
# store scale correction
bpy.context.scene.niftools_scene.scale_correction = NifOp.props.scale_correction
self.apply_scale(NifData.data, NifOp.props.scale_correction)
# import all root blocks
for block in NifData.data.roots:
root = block
# root hack for corrupt better bodies meshes and remove geometry from better bodies on skeleton import
for b in (b for b in block.tree() if
isinstance(b, NifFormat.NiGeometry) and b.is_skin()):
# check if root belongs to the children list of the skeleton root (can only happen for better bodies meshes)
if root in [
c for c in b.skin_instance.skeleton_root.children
]:
# fix parenting and update transform accordingly
b.skin_instance.data.set_transform(
root.get_transform() *
b.skin_instance.data.get_transform())
b.skin_instance.skeleton_root = root
# delete non-skeleton nodes if we're importing skeleton only
if NifOp.props.process == "SKELETON_ONLY":
nonbip_children = (child for child in root.children
if child.name[:6] != 'Bip01 ')
for child in nonbip_children:
root.remove_child(child)
# import this root block
NifLog.debug(f"Root block: {root.get_global_display()}")
self.import_root(root)
except NifError:
return {'CANCELLED'}
NifLog.info("Finished")
return {'FINISHED'}
class NifImport(NifCommon):
def __init__(self, operator, context):
NifCommon.__init__(self, operator, context)
def execute(self):
"""Main import function."""
self.load_files() # needs to be first to provide version info.
self.armaturehelper = Armature()
self.boundhelper = Bound()
self.bhkhelper = BhkCollision()
self.constrainthelper = Constraint()
self.objecthelper = Object()
self.object_anim = ObjectAnimation()
self.transform_anim = TransformAnimation()
# find and store this list now of selected objects as creating new objects adds them to the selection list
self.SELECTED_OBJECTS = bpy.context.selected_objects[:]
# catch nif import errors
try:
# check that one armature is selected in 'import geometry + parent
# to armature' mode
if NifOp.props.process == "GEOMETRY_ONLY":
if len(self.SELECTED_OBJECTS
) != 1 or self.SELECTED_OBJECTS[0].type != 'ARMATURE':
raise io_scene_niftools.utils.logging.NifError(
"You must select exactly one armature in 'Import Geometry Only' mode."
)
NifLog.info("Importing data")
# calculate and set frames per second
if NifOp.props.animation:
Animation.set_frames_per_second(NifData.data.roots)
# merge skeleton roots and transform geometry into the rest pose
if NifOp.props.merge_skeleton_roots:
pyffi.spells.nif.fix.SpellMergeSkeletonRoots(
data=NifData.data).recurse()
if NifOp.props.send_geoms_to_bind_pos:
pyffi.spells.nif.fix.SpellSendGeometriesToBindPosition(
data=NifData.data).recurse()
if NifOp.props.send_detached_geoms_to_node_pos:
pyffi.spells.nif.fix.SpellSendDetachedGeometriesToNodePosition(
data=NifData.data).recurse()
if NifOp.props.apply_skin_deformation:
VertexGroup.apply_skin_deformation(NifData.data)
# store scale correction
bpy.context.scene.niftools_scene.scale_correction = NifOp.props.scale_correction
self.apply_scale(NifData.data, NifOp.props.scale_correction)
# import all root blocks
for block in NifData.data.roots:
root = block
# root hack for corrupt better bodies meshes and remove geometry from better bodies on skeleton import
for b in (b for b in block.tree() if
isinstance(b, NifFormat.NiGeometry) and b.is_skin()):
# check if root belongs to the children list of the skeleton root (can only happen for better bodies meshes)
if root in [
c for c in b.skin_instance.skeleton_root.children
]:
# fix parenting and update transform accordingly
b.skin_instance.data.set_transform(
root.get_transform() *
b.skin_instance.data.get_transform())
b.skin_instance.skeleton_root = root
# delete non-skeleton nodes if we're importing skeleton only
if NifOp.props.process == "SKELETON_ONLY":
nonbip_children = (child for child in root.children
if child.name[:6] != 'Bip01 ')
for child in nonbip_children:
root.remove_child(child)
# import this root block
NifLog.debug(f"Root block: {root.get_global_display()}")
self.import_root(root)
except NifError:
return {'CANCELLED'}
NifLog.info("Finished")
return {'FINISHED'}
def load_files(self):
NifData.init(NifFile.load_nif(NifOp.props.filepath))
if NifOp.props.override_scene_info:
scene.import_version_info(NifData.data)
def import_root(self, root_block):
"""Main import function."""
# check that this is not a kf file
if isinstance(
root_block,
(NifFormat.NiSequence, NifFormat.NiSequenceStreamHelper)):
raise io_scene_niftools.utils.logging.NifError(
"Use the KF import operator to load KF files.")
# divinity 2: handle CStreamableAssetData
if isinstance(root_block, NifFormat.CStreamableAssetData):
root_block = root_block.root
# sets the root block parent to None, so that when crawling back the script won't barf
root_block._parent = None
# set the block parent through the tree, to ensure I can always move backward
self.set_parents(root_block)
# mark armature nodes and bones
self.armaturehelper.mark_armatures_bones(root_block)
# import the keyframe notes
# if NifOp.props.animation:
# self.animationhelper.import_text_keys(root_block)
# read the NIF tree
if isinstance(root_block,
(NifFormat.NiNode, NifFormat.NiTriBasedGeom)):
b_obj = self.import_branch(root_block)
ObjectProperty().import_extra_datas(root_block, b_obj)
# now all havok objects are imported, so we are ready to import the havok constraints
self.constrainthelper.import_bhk_constraints()
# parent selected meshes to imported skeleton
if NifOp.props.process == "SKELETON_ONLY":
# update parenting & armature modifier
for child in bpy.context.selected_objects:
if isinstance(child, bpy.types.Object) and not isinstance(
child.data, bpy.types.Armature):
child.parent = b_obj
for mod in child.modifiers:
if mod.type == "ARMATURE":
mod.object = b_obj
elif isinstance(root_block, NifFormat.NiCamera):
NifLog.warn('Skipped NiCamera root')
elif isinstance(root_block, NifFormat.NiPhysXProp):
NifLog.warn('Skipped NiPhysXProp root')
else:
NifLog.warn(
f"Skipped unsupported root block type '{root_block.__class__}' (corrupted nif?)."
)
def import_collision(self, n_node):
""" Imports a NiNode's collision_object, if present"""
if n_node.collision_object:
if isinstance(n_node.collision_object,
NifFormat.bhkNiCollisionObject):
return self.bhkhelper.import_bhk_shape(
n_node.collision_object.body)
elif isinstance(n_node.collision_object,
NifFormat.NiCollisionData):
return self.boundhelper.import_bounding_volume(
n_node.collision_object.bounding_volume)
return []
def import_branch(self, n_block, b_armature=None, n_armature=None):
"""Read the content of the current NIF tree branch to Blender recursively.
:param n_block: The nif block to import.
:param b_armature: The blender armature for the current branch.
:param n_armature: The corresponding nif block for the armature for the current branch.
"""
if not n_block:
return None
NifLog.info(f"Importing data for block '{n_block.name.decode()}'")
if isinstance(n_block, NifFormat.NiTriBasedGeom
) and NifOp.props.process != "SKELETON_ONLY":
return self.objecthelper.import_geometry_object(
b_armature, n_block)
elif isinstance(n_block, NifFormat.NiNode):
# import object
if self.armaturehelper.is_armature_root(n_block):
# all bones in the tree are also imported by import_armature
if NifOp.props.process != "GEOMETRY_ONLY":
b_obj = self.armaturehelper.import_armature(n_block)
else:
n_name = block_store.import_name(n_block)
b_obj = math.get_armature()
NifLog.info(
f"Merging nif tree '{n_name}' with armature '{b_obj.name}'"
)
if n_name != b_obj.name:
NifLog.warn(
f"Using Nif block '{n_name}' as armature '{b_obj.name}' but names do not match"
)
b_armature = b_obj
n_armature = n_block
elif self.armaturehelper.is_bone(n_block):
# bones have already been imported during import_armature
n_name = block_store.import_name(n_block)
if n_name in b_armature.data.bones:
b_obj = b_armature.data.bones[n_name]
else:
# this is a fallback for a weird bug, when a node is child of a NiLodNode in a skeletal nif
b_obj = self.objecthelper.create_b_obj(n_block,
None,
name=n_name)
b_obj.niftools.flags = n_block.flags
else:
# import as an empty
b_obj = NiTypes.import_empty(n_block)
# find children
b_children = []
n_children = [child for child in n_block.children]
for n_child in n_children:
b_child = self.import_branch(n_child,
b_armature=b_armature,
n_armature=n_armature)
if b_child and isinstance(b_child, bpy.types.Object):
b_children.append(b_child)
# import collision objects & bounding box
if NifOp.props.process != "SKELETON_ONLY":
b_children.extend(self.import_collision(n_block))
b_children.extend(
self.boundhelper.import_bounding_box(n_block))
# set bind pose for children
self.objecthelper.set_object_bind(b_obj, b_children, b_armature)
# import extra node data, such as node type
NiTypes.import_root_collision(n_block, b_obj)
NiTypes.import_billboard(n_block, b_obj)
NiTypes.import_range_lod_data(n_block, b_obj, b_children)
# set object transform, this must be done after all children objects have been parented to b_obj
if isinstance(b_obj, bpy.types.Object):
# note: bones and this object's children already have their matrix set
b_obj.matrix_local = math.import_matrix(n_block)
# import object level animations (non-skeletal)
if NifOp.props.animation:
# self.animationhelper.import_text_keys(n_block)
self.transform_anim.import_transforms(n_block, b_obj)
self.object_anim.import_visibility(n_block, b_obj)
return b_obj
# all else is currently discarded
return None
def set_parents(self, n_block):
"""Set the parent block recursively through the tree, to allow
crawling back as needed."""
if isinstance(n_block, NifFormat.NiNode):
# list of non-null children
children = [child for child in n_block.children if child]
for child in children:
child._parent = n_block
self.set_parents(child)
