UnrealEnginePython/examples/builder_nif.py at master · CryptArc/UnrealEnginePython · GitHub

Repository navigation

History

from unreal_engine.classes import StaticMesh

from unreal_engine.structs import StaticMeshSourceModel, MeshBuildSettings

from unreal_engine import FRawMesh

import time

import unreal_engine as ue

import itertools

# this is a static mesh importer script using niftools (https://github.com/niftools/pyffi)

from pyffi.formats.nif import NifFormat

# create a new StaticMesh

sm = StaticMesh()

# prepare a new LOD for the StaticMesh

source_model = StaticMeshSourceModel(BuildSettings=MeshBuildSettings(bRecomputeNormals=True, bRecomputeTangents=True, bUseMikkTSpace=False, bBuildAdjacencyBuffer=True,bRemoveDegenerates=True))

# open a nif file

stream = open('C:/Users/Roberto/Downloads/test_dump_tex.nif', 'rb')

data = NifFormat.Data()

data.read(stream)

stream.close()

# a custom class for storing vertex data

class Vertex:

def __init__(self, vertex, texcoord, normal):

self.vertex = vertex

self.texcoord = texcoord

self.normal = normal

# faces is a list containing Vertex instances

faces = []

#load only the first child of the first root

node = data.roots[0].children[0]

# we assume three vertices for each face (with counter-clockwise order)

# managing uvs and normals is left to the reader :P

for face in node.data.triangles:

v = node.data.vertices[face.v_1]

faces.append(Vertex((v.x, v.y, v.z), (0,0), None))

v = node.data.vertices[face.v_3]

faces.append(Vertex((v.x, v.y, v.z), (0,0), None))

v = node.data.vertices[face.v_2]

faces.append(Vertex((v.x, v.y, v.z), (0,0), None))

# instntiate a new FRawMesh

mesh = FRawMesh()

mesh.set_vertex_positions(list(itertools.chain(*[v.vertex for v in faces])))

# uvs are required

mesh.set_wedge_tex_coords(list(itertools.chain(*[v.texcoord for v in faces])))

# normals are optionals

#mesh.set_wedge_tangent_x(list(itertools.chain(*[v.normal for v in faces])))

# assign indices

mesh.set_wedge_indices([n for n, face in enumerate(faces)])

# assign the FRawMesh to the LOD0

mesh.save_to_static_mesh_source_model(source_model)

# assign LOD0 to the SataticMesh and build it

sm.SourceModels = [source_model]

sm.static_mesh_build()

sm.static_mesh_create_body_setup()

# save the asset

sm.save_package('/Game/NifStaticMesh')

UnrealEnginePython/examples/builder_nif.py at master · CryptArc/UnrealEnginePython · GitHub

Repository navigation

Expand file tree

Breadcrumbs

builder_nif.py

Latest commit

History

Breadcrumbs

builder_nif.py

File metadata and controls