681 lines
23 KiB
Python
681 lines
23 KiB
Python
import bpy,bmesh,bpy_extras,mathutils
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import pathlib,zipfile,time,os,tempfile,math
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import struct,shutil
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from bpy_extras import io_utils,node_shader_utils
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from bpy_extras.io_utils import unpack_list
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from bpy_extras.image_utils import load_image
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from . import utils, config
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class ImportBM(bpy.types.Operator, bpy_extras.io_utils.ImportHelper):
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"""Load a Ballance Map File (BM file spec 1.0)"""
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bl_idname = "import_scene.bm"
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bl_label = "Import BM "
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bl_options = {'PRESET', 'UNDO'}
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filename_ext = ".bm"
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@classmethod
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def poll(self, context):
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prefs = bpy.context.preferences.addons[__package__].preferences
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return (os.path.isdir(prefs.temp_texture_folder) and os.path.isdir(prefs.external_folder))
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def execute(self, context):
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prefs = bpy.context.preferences.addons[__package__].preferences
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import_bm(context, self.filepath, prefs.external_folder, prefs.temp_texture_folder)
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return {'FINISHED'}
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class ExportBM(bpy.types.Operator, bpy_extras.io_utils.ExportHelper):
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"""Save a Ballance Map File (BM file spec 1.0)"""
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bl_idname = "export_scene.bm"
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bl_label = 'Export BM'
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bl_options = {'PRESET'}
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filename_ext = ".bm"
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export_mode: bpy.props.EnumProperty(
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name="Export mode",
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items=(('COLLECTION', "Selected collection", "Export the selected collection"),
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('OBJECT', "Selected objects", "Export the selected objects"),
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),
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)
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export_target: bpy.props.StringProperty(
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name="Export target",
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description="Which one will be exported",
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)
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def execute(self, context):
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export_bm(context, self.filepath, self.export_mode, self.export_target, "") #todo: fix no_component_suffix
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return {'FINISHED'}
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# ========================================== method
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bm_current_version = 11
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def import_bm(context,filepath,externalTexture,blenderTempFolder):
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# ============================================ alloc a temp folder
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tempFolderObj = tempfile.TemporaryDirectory()
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tempFolder = tempFolderObj.name
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# debug
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print(tempFolder)
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tempTextureFolder = os.path.join(tempFolder, "Texture")
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prefs = bpy.context.preferences.addons[__package__].preferences
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blenderTempTextureFolder = prefs.temp_texture_folder
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externalTextureFolder = prefs.external_folder
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with zipfile.ZipFile(filepath, 'r', zipfile.ZIP_DEFLATED, 9) as zipObj:
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zipObj.extractall(tempFolder)
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# index.bm
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findex = open(os.path.join(tempFolder, "index.bm"), "rb")
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# judge version first
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gotten_version = read_uint32(findex)
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if (gotten_version != bm_current_version):
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utils.ShowMessageBox("Unsupported BM spec. Expect: {} Gotten: {}".format(bm_current_version, gotten_version), "Unsupported BM spec", 'WARNING')
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findex.close()
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tempFolderObj.cleanup()
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return
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objectList = []
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meshList = []
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materialList = []
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textureList = []
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while len(peek_stream(findex)) != 0:
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index_name = read_string(findex)
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index_type = read_uint8(findex)
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index_offset = read_uint64(findex)
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blockCache = info_block_helper(index_name, index_offset)
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if index_type == info_bm_type.OBJECT:
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objectList.append(blockCache)
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elif index_type == info_bm_type.MESH:
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meshList.append(blockCache)
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elif index_type == info_bm_type.MATERIAL:
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materialList.append(blockCache)
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elif index_type == info_bm_type.TEXTURE:
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textureList.append(blockCache)
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else:
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pass
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findex.close()
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# texture.bm
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ftexture = open(os.path.join(tempFolder, "texture.bm"), "rb")
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for item in textureList:
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ftexture.seek(item.offset, os.SEEK_SET)
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texture_filename = read_string(ftexture)
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texture_isExternal = read_bool(ftexture)
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if texture_isExternal:
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txur = load_image(texture_filename, externalTextureFolder)
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item.blenderData = txur
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else:
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# not external. copy temp file into blender temp. then use it.
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# try copy. if fail, don't need to do more
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try:
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shutil.copy(os.path.join(tempTextureFolder, texture_filename), os.path.join(blenderTempTextureFolder, texture_filename))
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except:
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pass
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txur = load_image(texture_filename, blenderTempTextureFolder)
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item.blenderData = txur
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txur.name = item.name
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ftexture.close()
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# material.bm
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fmaterial = open(os.path.join(tempFolder, "material.bm"), "rb")
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for item in materialList:
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fmaterial.seek(item.offset, os.SEEK_SET)
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# read data
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material_colAmbient = read_3vector(fmaterial)
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material_colDiffuse = read_3vector(fmaterial)
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material_colSpecular = read_3vector(fmaterial)
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material_colEmissive = read_3vector(fmaterial)
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material_specularPower = read_float(fmaterial)
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material_useTexture = read_bool(fmaterial)
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material_texture = read_uint32(fmaterial)
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# create basic material
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m = bpy.data.materials.new(item.name)
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m.use_nodes=True
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for node in m.node_tree.nodes:
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m.node_tree.nodes.remove(node)
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bnode=m.node_tree.nodes.new(type="ShaderNodeBsdfPrincipled")
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mnode=m.node_tree.nodes.new(type="ShaderNodeOutputMaterial")
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m.node_tree.links.new(bnode.outputs[0],mnode.inputs[0])
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m.metallic = sum(material_colAmbient) / 3
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m.diffuse_color = [i for i in material_colDiffuse] + [1]
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m.specular_color = material_colSpecular
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m.specular_intensity = material_specularPower
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# create a texture
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if material_useTexture:
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inode=m.node_tree.nodes.new(type="ShaderNodeTexImage")
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inode.image=textureList[material_texture].blenderData
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m.node_tree.links.new(inode.outputs[0],bnode.inputs[0])
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# write custom property
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m['virtools-ambient'] = material_colAmbient
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m['virtools-diffuse'] = material_colDiffuse
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m['virtools-specular'] = material_colSpecular
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m['virtools-emissive'] = material_colEmissive
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m['virtools-power'] = material_specularPower
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item.blenderData = m
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fmaterial.close()
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# mesh.bm
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fmesh = open(os.path.join(tempFolder, "mesh.bm"), "rb")
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vList=[]
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vtList=[]
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vnList=[]
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faceList=[]
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materialSolt = []
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for item in meshList:
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fmesh.seek(item.offset, os.SEEK_SET)
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# create real mesh
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mesh = bpy.data.meshes.new(item.name)
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vList.clear()
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vtList.clear()
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vnList.clear()
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faceList.clear()
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materialSolt.clear()
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# in first read, store all data into list
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listCount = read_uint32(fmesh)
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for i in range(listCount):
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cache = read_3vector(fmesh)
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# switch yz
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vList.append((cache[0], cache[2], cache[1]))
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listCount = read_uint32(fmesh)
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for i in range(listCount):
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cache = read_2vector(fmesh)
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# reverse v
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vtList.append((cache[0], -cache[1]))
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listCount = read_uint32(fmesh)
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for i in range(listCount):
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cache = read_3vector(fmesh)
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# switch yz
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vnList.append((cache[0], cache[2], cache[1]))
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listCount = read_uint32(fmesh)
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for i in range(listCount):
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faceData = read_face(fmesh)
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mesh_useMaterial = read_bool(fmesh)
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mesh_materialIndex = read_uint32(fmesh)
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if mesh_useMaterial:
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neededMaterial = materialList[mesh_materialIndex].blenderData
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if neededMaterial in materialSolt:
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neededIndex = materialSolt.index(neededMaterial)
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else:
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neededIndex = len(materialSolt)
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materialSolt.append(neededMaterial)
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else:
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neededIndex = -1
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# we need invert triangle sort
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faceList.append((
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faceData[6], faceData[7], faceData[8],
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faceData[3], faceData[4], faceData[5],
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faceData[0], faceData[1], faceData[2],
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neededIndex
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))
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# and then we need add material solt for this mesh
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for mat in materialSolt:
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mesh.materials.append(mat)
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# then, we need add correspond count for vertices
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mesh.vertices.add(len(vList))
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mesh.loops.add(len(faceList)*3) # triangle face confirm
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mesh.polygons.add(len(faceList))
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mesh.uv_layers.new(do_init=False)
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mesh.create_normals_split()
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# add vertices data
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mesh.vertices.foreach_set("co", unpack_list(vList))
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mesh.loops.foreach_set("vertex_index", unpack_list(flat_vertices_index(faceList)))
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mesh.loops.foreach_set("normal", unpack_list(flat_vertices_normal(faceList, vnList)))
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mesh.uv_layers[0].data.foreach_set("uv", unpack_list(flat_vertices_uv(faceList, vtList)))
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for i in range(len(faceList)):
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mesh.polygons[i].loop_start = i * 3
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mesh.polygons[i].loop_total = 3
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if faceList[i][9] != -1:
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mesh.polygons[i].material_index = faceList[i][9]
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mesh.validate(clean_customdata=False)
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mesh.update(calc_edges=False, calc_edges_loose=False)
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# add into item using
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item.blenderData = mesh
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fmesh.close()
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# object
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fobject = open(os.path.join(tempFolder, "object.bm"), "rb")
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view_layer = context.view_layer
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collection = view_layer.active_layer_collection.collection
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for item in objectList:
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fobject.seek(item.offset, os.SEEK_SET)
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# read data
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object_isComponent = read_bool(fobject)
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object_isForcedNoComponent = read_bool(fobject)
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object_isHidden = read_bool(fobject)
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object_worldMatrix = read_worldMaterix(fobject)
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object_meshIndex = read_uint32(fobject)
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# got mesh first
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if object_isComponent:
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neededMesh = load_component(object_meshIndex)
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else:
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neededMesh = meshList[object_meshIndex].blenderData
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# create real object
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obj = bpy.data.objects.new(item.name, neededMesh)
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obj.matrix_world = object_worldMatrix
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obj.hide_viewport = object_isHidden
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# todo: finish forced collection grouping
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collection.objects.link(obj)
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fobject.close()
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view_layer.update()
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tempFolderObj.cleanup()
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def export_bm(context,filepath,export_mode, export_target, no_component_suffix):
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# ============================================ alloc a temp folder
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tempFolderObj = tempfile.TemporaryDirectory()
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tempFolder = tempFolderObj.name
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# debug
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# tempFolder = "G:\\ziptest"
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tempTextureFolder = os.path.join(tempFolder, "Texture")
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os.makedirs(tempTextureFolder)
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# ============================================ find export target
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if export_mode== "COLLECTION":
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objectList = bpy.data.collections[export_target].objects
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else:
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objectList = [bpy.data.objects[export_target]]
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needSuffixChecker = no_component_suffix != ""
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componentObj = set()
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for obj in objectList:
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if needSuffixChecker and obj.name.endwith(no_component_suffix):
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pass # meshObjList.add(obj)
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else:
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if is_component(obj.name):
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componentObj.add(obj)
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else:
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pass # meshObjList.add(obj)
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# ============================================ export
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finfo = open(os.path.join(tempFolder, "index.bm"), "wb")
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finfo.write(struct.pack("I", bm_current_version))
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# ====================== export object
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fobject = open(os.path.join(tempFolder, "object.bm"), "wb")
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meshSet = set()
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meshList = []
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meshCount = 0
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for obj in objectList:
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# only export mesh object
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if obj.type != 'MESH':
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continue
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varis_component = obj in componentObj
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# clean no mesh object
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currentMesh = obj.data
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if currentMesh == None:
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continue
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# triangle first and then group
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if not varis_component:
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if currentMesh not in meshSet:
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mesh_triangulate(currentMesh)
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meshSet.add(currentMesh)
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meshList.append(currentMesh)
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meshId = meshCount
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meshCount += 1
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else:
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meshId = meshList.index(currentMesh)
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# write finfo first
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write_string(finfo, obj.name)
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write_int(finfo, info_bm_type.OBJECT)
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write_long(finfo, fobject.tell())
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# write fobject
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write_int(fobject, 1 if varis_component else 0)
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write_worldMatrix(fobject, obj.matrix_world)
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if varis_component:
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write_int(fobject, get_component_id(obj.name))
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else:
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write_int(fobject, meshId)
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fobject.close()
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# ====================== export mesh
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fmesh = open(os.path.join(tempFolder, "mesh.bm"), "wb")
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materialSet = set()
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materialList = []
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for mesh in meshList:
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mesh.calc_normals_split()
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# write finfo first
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write_string(finfo, mesh.name)
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write_int(finfo, info_bm_type.MESH)
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write_long(finfo, fmesh.tell())
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# write fmesh
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# vertices
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vecList = mesh.vertices[:]
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write_int(fmesh, len(vecList))
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for vec in vecList:
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#swap yz
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write_3vector(fmesh,vec.co[0],vec.co[2],vec.co[1])
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# uv
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face_index_pairs = [(face, index) for index, face in enumerate(mesh.polygons)]
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uv_layer = mesh.uv_layers.active.data[:]
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write_int(fmesh, len(face_index_pairs) * 3)
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for f, f_index in face_index_pairs:
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# it should be triangle face, otherwise throw a error
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if (f.loop_total != 3):
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raise Exception("Not a triangle", f.poly.loop_total)
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for loop_index in range(f.loop_start, f.loop_start + f.loop_total):
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uv = uv_layer[loop_index].uv
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# reverse v
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write_2vector(fmesh, uv[0], -uv[1])
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# normals
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write_int(fmesh, len(face_index_pairs) * 3)
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for f, f_index in face_index_pairs:
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# no need to check triangle again
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for loop_index in range(f.loop_start, f.loop_start + f.loop_total):
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nml = mesh.loops[loop_index].normal
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# swap yz
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write_3vector(fmesh, nml[0], nml[2], nml[1])
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# face
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# get material first
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currentMat = mesh.materials[:]
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noMaterial = len(currentMat) == 0
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for mat in currentMat:
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if mat not in materialSet:
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materialSet.add(mat)
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materialList.append(mat)
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write_int(fmesh, len(face_index_pairs))
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vtIndex = []
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vnIndex = []
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vIndex = []
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for f, f_index in face_index_pairs:
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# confirm material use
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if noMaterial:
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usedMat = 0
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else:
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usedMat = materialList.index(currentMat[f.material_index])
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# export face
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vtIndex.clear()
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vnIndex.clear()
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vIndex.clear()
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counter = 0
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for loop_index in range(f.loop_start, f.loop_start + f.loop_total):
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vIndex.append(mesh.loops[loop_index].vertex_index)
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vnIndex.append(f_index * 3 + counter)
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vtIndex.append(f_index * 3 + counter)
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counter += 1
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# reverse vertices sort
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write_face(fmesh,
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vIndex[2], vtIndex[2], vnIndex[2],
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vIndex[1], vtIndex[1], vnIndex[1],
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vIndex[0], vtIndex[0], vnIndex[0])
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# set used material
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write_int(fmesh, 0 if noMaterial else 1)
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write_int(fmesh, usedMat)
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mesh.free_normals_split()
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fmesh.close()
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# ====================== export material
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fmaterial = open(os.path.join(tempFolder, "material.bm"), "wb")
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textureSet = set()
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textureList = []
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textureCount = 0
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# todo: texture filter have duplicated name error. fix it later
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for material in materialList:
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# write finfo first
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write_string(finfo, material.name)
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write_int(finfo, info_bm_type.MATERIAL)
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write_long(finfo, fmaterial.tell())
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# write basic color
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mat_wrap = node_shader_utils.PrincipledBSDFWrapper(material)
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if mat_wrap:
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use_mirror = mat_wrap.metallic != 0.0
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if use_mirror:
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write_3vector(fmaterial, mat_wrap.metallic, mat_wrap.metallic, mat_wrap.metallic)
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else:
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write_3vector(fmaterial, 1, 1, 1)
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write_3vector(fmaterial, mat_wrap.base_color[0], mat_wrap.base_color[1], mat_wrap.base_color[2])
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write_3vector(fmaterial, mat_wrap.specular, mat_wrap.specular, mat_wrap.specular)
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# confirm texture
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tex_wrap = getattr(mat_wrap, "base_color_texture", None)
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if tex_wrap:
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image = tex_wrap.image
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if image:
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# add into texture list
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if image not in textureSet:
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textureSet.add(image)
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textureList.append(image)
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currentTexture = textureCount
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textureCount += 1
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else:
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currentTexture = textureList.index(image)
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write_int(fmaterial, 1)
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write_int(fmaterial, currentTexture)
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else:
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# no texture
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write_int(fmaterial, 0)
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write_int(fmaterial, 0)
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else:
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# no texture
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write_int(fmaterial, 0)
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write_int(fmaterial, 0)
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else:
|
|
# no Principled BSDF. write garbage
|
|
write_3vector(fmaterial, 0.8, 0.8, 0.8)
|
|
write_3vector(fmaterial, 0.8, 0.8, 0.8)
|
|
write_3vector(fmaterial, 0.8, 0.8, 0.8)
|
|
write_int(fmaterial, 0)
|
|
write_int(fmaterial, 0)
|
|
|
|
fmaterial.close()
|
|
|
|
# ====================== export texture
|
|
ftexture = open(os.path.join(tempFolder, "texture.bm"), "wb")
|
|
source_dir = os.path.dirname(bpy.data.filepath)
|
|
existed_texture = set()
|
|
|
|
for texture in textureList:
|
|
# write finfo first
|
|
write_string(finfo, texture.name)
|
|
write_int(finfo, info_bm_type.TEXTURE)
|
|
write_long(finfo, ftexture.tell())
|
|
|
|
# confirm internal
|
|
texture_filepath = io_utils.path_reference(texture.filepath, source_dir, tempTextureFolder,
|
|
'ABSOLUTE', "", None, texture.library)
|
|
filename = os.path.basename(texture_filepath)
|
|
write_string(ftexture, filename)
|
|
if (is_external_texture(filename)):
|
|
write_int(ftexture, 1)
|
|
else:
|
|
# copy internal texture, if this file is copied, do not copy it again
|
|
write_int(ftexture, 0)
|
|
if filename not in existed_texture:
|
|
shutil.copy(texture_filepath, os.path.join(tempTextureFolder, filename))
|
|
existed_texture.add(filename)
|
|
|
|
ftexture.close()
|
|
|
|
# close info fs
|
|
finfo.close()
|
|
|
|
# ============================================ save zip and clean up folder
|
|
if os.path.isfile(filepath):
|
|
os.remove(filepath)
|
|
with zipfile.ZipFile(filepath, 'w', zipfile.ZIP_DEFLATED, 9) as zipObj:
|
|
for folderName, subfolders, filenames in os.walk(tempFolder):
|
|
for filename in filenames:
|
|
filePath = os.path.join(folderName, filename)
|
|
arcname=os.path.relpath(filePath, tempFolder)
|
|
zipObj.write(filePath, arcname)
|
|
tempFolderObj.cleanup()
|
|
|
|
# ======================================================================================= export / import assistant
|
|
|
|
# shared
|
|
|
|
class info_bm_type():
|
|
OBJECT = 0
|
|
MESH = 1
|
|
MATERIAL = 2
|
|
TEXTURE = 3
|
|
|
|
# import
|
|
|
|
class info_block_helper():
|
|
def __init__(self, name, offset):
|
|
self.name = name
|
|
self.offset = offset
|
|
self.blenderData = None
|
|
|
|
def load_component(component_id):
|
|
return None
|
|
|
|
def flat_vertices_index(faceList):
|
|
for item in faceList:
|
|
yield (item[0], )
|
|
yield (item[3], )
|
|
yield (item[6], )
|
|
|
|
def flat_vertices_normal(faceList, vnList):
|
|
for item in faceList:
|
|
yield vnList[item[2]]
|
|
yield vnList[item[5]]
|
|
yield vnList[item[8]]
|
|
|
|
def flat_vertices_uv(faceList, vtList):
|
|
for item in faceList:
|
|
yield vtList[item[1]]
|
|
yield vtList[item[4]]
|
|
yield vtList[item[7]]
|
|
|
|
# export
|
|
|
|
def is_component(name):
|
|
return get_component_id(name) != -1
|
|
|
|
def get_component_id(name):
|
|
return -1 # todo: finish this, -1 mean not a component
|
|
|
|
def is_external_texture(name):
|
|
if name in config.external_texture_list:
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def mesh_triangulate(me):
|
|
bm = bmesh.new()
|
|
bm.from_mesh(me)
|
|
bmesh.ops.triangulate(bm, faces=bm.faces)
|
|
bm.to_mesh(me)
|
|
bm.free()
|
|
|
|
# ======================================================================================= file io assistant
|
|
|
|
# import
|
|
|
|
def peek_stream(fs):
|
|
res = fs.read(1)
|
|
fs.seek(-1, os.SEEK_CUR)
|
|
return res
|
|
|
|
def read_float(fs):
|
|
return struct.unpack("f", fs.read(4))[0]
|
|
|
|
def read_uint8(fs):
|
|
return struct.unpack("B", fs.read(1))[0]
|
|
|
|
def read_uint32(fs):
|
|
return struct.unpack("I", fs.read(4))[0]
|
|
|
|
def read_uint64(fs):
|
|
return struct.unpack("Q", fs.read(8))[0]
|
|
|
|
def read_string(fs):
|
|
count = read_uint32(fs)
|
|
return fs.read(count*4).decode("utf_32_le")
|
|
|
|
def read_bool(fs):
|
|
return read_uint8(fs) != 0
|
|
|
|
def read_worldMaterix(fs):
|
|
p = struct.unpack("ffffffffffffffff", fs.read(4*4*4))
|
|
res = mathutils.Matrix((
|
|
(p[0], p[2], p[1], p[3]),
|
|
(p[8], p[10], p[9], p[11]),
|
|
(p[4], p[6], p[5], p[7]),
|
|
(p[12], p[14], p[13], p[15])))
|
|
return res.transposed()
|
|
|
|
def read_3vector(fs):
|
|
return struct.unpack("fff", fs.read(3*4))
|
|
|
|
def read_2vector(fs):
|
|
return struct.unpack("ff", fs.read(2*4))
|
|
|
|
def read_face(fs):
|
|
return struct.unpack("IIIIIIIII", fs.read(4*9))
|
|
|
|
# export
|
|
|
|
def write_string(fs,str):
|
|
count=len(str)
|
|
write_int(fs,count)
|
|
fs.write(str.encode("utf_32_le"))
|
|
|
|
def write_int(fs,num):
|
|
fs.write(struct.pack("I", num))
|
|
|
|
def write_long(fs,num):
|
|
fs.write(struct.pack("Q", num))
|
|
|
|
def write_worldMatrix(fs, matt):
|
|
mat = matt.transposed()
|
|
fs.write(struct.pack("ffffffffffffffff",
|
|
mat[0][0],mat[0][2], mat[0][1], mat[0][3],
|
|
mat[2][0],mat[2][2], mat[2][1], mat[2][3],
|
|
mat[1][0],mat[1][2], mat[1][1], mat[1][3],
|
|
mat[3][0],mat[3][2], mat[3][1], mat[3][3]))
|
|
|
|
def write_3vector(fs, x, y ,z):
|
|
fs.write(struct.pack("fff", x, y ,z))
|
|
|
|
def write_2vector(fs, u, v):
|
|
fs.write(struct.pack("ff", u, v))
|
|
|
|
def write_face(fs, v1, vt1, vn1, v2, vt2, vn2, v3, vt3, vn3):
|
|
fs.write(struct.pack("IIIIIIIII", v1, vt1, vn1, v2, vt2, vn2, v3, vt3, vn3))
|
|
|