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convert.py
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convert.py
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# By Vorono4ka (https://vk.com/vorono4ka_id0_id1_id228_id1488)
from io import BufferedReader, BytesIO
from struct import *
import os
class Reader(BufferedReader):
def __init__(self, initial_bytes):
super().__init__(BytesIO(initial_bytes))
def readInteger(self, length: int = 1):
return int.from_bytes(self.read(length), 'big', signed=True)
def readUInt32(self):
return unpack('>I', self.read(4))[0]
def readString(self):
return self.read(self.readInteger(2)).decode('utf-8')
def readUShort(self):
return unpack('>H', self.read(2))[0]
def readShort(self):
return unpack('>h', self.read(2))[0]
def readFloat(self):
return unpack('>f', self.read(4))[0]
def readUByte(self):
return unpack('>B', self.read(1))[0]
def readVertex(self):
vertex = []
self.readString()
self.readUByte() # index
self.readUShort()
scale = self.readFloat()
count = self.readUInt32()
for x1 in range(count):
vertex.append([self.readShort() / 32767 * scale, self.readShort() / 32767 * scale, self.readShort() / 32767 * scale])
return vertex
def readTexCoord(self):
vertex = []
self.readUByte() # index
self.readUShort()
scale = self.readFloat()
count = self.readUInt32()
for x1 in range(count):
vertex.append([self.readShort() / 32512 * scale, 1-self.readShort() / 32512 * scale])
return vertex
def readColor(self):
vertex = []
self.readUByte() # index
vertex_shorts = self.readUShort()
scale = self.readFloat()
count = self.readUInt32()
for x1 in range(count):
for x2 in range(vertex_shorts):
vertex.append(self.readShort() / 32512 * scale)
return vertex
class Struct(Reader):
def __init__(self, filename):
path = f'scw/{filename}'
data = open(path, 'rb').read()
reader, chunks, i = Reader(data), [], 0
reader.read(4)
while i < len(data) and data[i + 8:i + 12] != b'WEND':
chunklen = reader.readInteger(4) + 8
chunks.append(reader.read(chunklen))
i += chunklen + 4
for chunk in chunks:
cr = Reader(chunk) # chunkreader
if cr.read(4) == b'GEOM':
name = cr.readString()
group = cr.readString()
if not os.path.isdir(f'obj/{filename[:-4]}'):
os.mkdir(f'obj/{filename[:-4]}')
if not os.path.isdir(f'obj/{filename[:-4]}/{group}'):
os.mkdir(f'obj/{filename[:-4]}/{group}')
path = f'obj/{filename[:-4]}/{group}/{name}.obj'
obj = open(path, 'w')
vertex_count = cr.readUByte()
if vertex_count > 0:
vertex = cr.readVertex()
obj.write(''.join([f'v {" ".join([str(y) for y in x])}\n' for x in vertex]))
if vertex_count > 1:
vertex = cr.readVertex()
obj.write(''.join([f'vn {" ".join([str(y) for y in x])}\n' for x in vertex]))
if vertex_count > 2:
if cr.readString() == 'TEXCOORD':
vertex = cr.readTexCoord()
obj.write(''.join([f'vt {" ".join([str(y) for y in x])}\n' for x in vertex]))
else:
cr.readColor()
if vertex_count > 3:
if cr.readString() == 'TEXCOORD':
vertex = cr.readTexCoord()
obj.write(''.join([f'vt {" ".join([str(y) for y in x])}\n' for x in vertex]))
else:
cr.readColor()
if vertex_count > 4:
if cr.readString() == 'TEXCOORD':
vertex = cr.readTexCoord()
obj.write(''.join([f'vt {" ".join([str(y) for y in x])}\n' for x in vertex]))
else:
cr.readColor()
if cr.readUByte() == 1:
cr.read(64)
for x in range(cr.readUByte()):
cr.readString()
cr.read(64)
for x in range(cr.readUInt32()):
cr.read(12)
for x in range(cr.readUByte()):
obj.write(f'\no {name}_cms\n\n')
cr.readString()
cr.readString()
count = cr.readUShort()
mode1 = cr.readUByte()
mode2 = cr.readUByte()
for x1 in range(count):
poly = []
for x2 in range(3):
if mode1 > 0:
v = f'{cr.readUShort() + 1}' if mode2 == 2 else f'{cr.readUByte() + 1}'
if mode1 > 1:
vn = f'{cr.readUShort() + 1}' if mode2 == 2 else f'{cr.readUByte() + 1}'
else:
vn = v
if mode1 > 2:
vt = f'{cr.readUShort() + 1}' if mode2 == 2 else f'{cr.readUByte() + 1}'
else:
vt = vn
if mode1 > 3:
cr.readUShort() if mode2 == 2 else cr.readUByte()
poly.append(f'{v}/{vt}/{vn}')
obj.write(f'f {" ".join(poly)}\n')
obj.close()
print(f'The {filename} is converted!')
if not os.path.isdir('scw/'):
os.mkdir('scw')
if not os.path.isdir('obj/'):
os.mkdir('obj/')
for filename in os.listdir('scw/'):
modeldata = Struct(filename)
# By Vorono4ka (https://vk.com/vorono4ka_id0_id1_id228_id1488)