12 literal to unicode for python2 and python3 compatiblity.
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14 in python2 str to unicode.
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15 in python3 str(as unicode) to str.
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17 if sys.version_info[0]<3:
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18 return src.decode('utf-8')
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25 class Vector2(object):
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27 2D coordinate for uv value
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29 __slots__=['x', 'y']
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30 def __init__(self, x=0, y=0):
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35 return "<%f %f>" % (self.x, self.y)
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37 def __eq__(self, rhs):
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38 return self.x==rhs.x and self.y==rhs.y
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40 def __ne__(self, rhs):
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41 return not self.__eq__(rhs)
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43 def __getitem__(self, key):
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52 return (self.x, self.y)
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54 def cross(self, rhs):
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55 """cross(outer) product"""
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56 return self.x*rhs.y-self.y*rhs.x
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59 class Vector3(object):
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61 3D coordinate for vertex position, normal direction
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63 __slots__=['x', 'y', 'z']
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64 def __init__(self, x=0, y=0, z=0):
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70 return "<%f %f %f>" % (self.x, self.y, self.z)
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72 def __eq__(self, rhs):
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73 return self.x==rhs.x and self.y==rhs.y and self.z==rhs.z
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75 def __ne__(self, rhs):
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76 return not self.__eq__(rhs)
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78 def __getitem__(self, key):
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89 return (self.x, self.y, self.z)
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91 def __add__(self, r):
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92 return Vector3(self.x+r.x, self.y+r.y, self.z+r.z)
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94 def __sub__(self, rhs):
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95 return Vector3(self.x-rhs.x, self.y-rhs.y, self.z-rhs.z)
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97 def getSqNorm(self):
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98 return self.x*self.x + self.y*self.y + self.z*self.z
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101 return math.sqrt(self.getSqNorm())
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103 def normalize(self):
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104 factor=1.0/self.getNorm()
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111 return [self.x, self.y, self.z]
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113 def dot(self, rhs):
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114 """dot(inner) product"""
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115 return self.x*rhs.x + self.y*rhs.y + self.z*rhs.z
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117 def cross(self, rhs):
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118 """cross(outer) product"""
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120 self.y*rhs.z - rhs.y*self.z,
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121 self.z*rhs.x - rhs.z*self.x,
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122 self.x*rhs.y - rhs.x*self.y,
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126 class Quaternion(object):
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128 rotation representation in vmd motion
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130 __slots__=['x', 'y', 'z', 'w']
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131 def __init__(self, x=0, y=0, z=0, w=1):
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138 return "<%f %f %f %f>" % (self.x, self.y, self.z, self.w)
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140 def __mul__(self, rhs):
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141 u=numpy.array([self.x, self.y, self.z], 'f')
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142 v=numpy.array([rhs.x, rhs.y, rhs.z], 'f')
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143 xyz=self.w*v+rhs.w*u+numpy.cross(u, v)
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144 q=Quaternion(xyz[0], xyz[1], xyz[2], self.w*rhs.w-numpy.dot(u, v))
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147 def dot(self, rhs):
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148 return self.x*rhs.x+self.y*rhs.y+self.z*rhs.z+self.w*rhs.w
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150 def getMatrix(self):
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160 return numpy.array([
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162 [1-2*sqY-2*sqZ, 2*xy+2*wz, 2*xz-2*wy, 0],
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164 [2*xy-2*wz, 1-2*sqX-2*sqZ, 2*yz+2*wx, 0],
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166 [2*xz+2*wy, 2*yz-2*wx, 1-2*sqX-2*sqY, 0],
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171 def getRHMatrix(self):
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185 return numpy.array([
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187 [1-2*sqY-2*sqZ, 2*xy+2*wz, 2*xz-2*wy, 0],
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189 [2*xy-2*wz, 1-2*sqX-2*sqZ, 2*yz+2*wx, 0],
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191 [2*xz+2*wy, 2*yz-2*wx, 1-2*sqX-2*sqY, 0],
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196 def getRollPitchYaw(self):
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199 roll = math.atan2(m[0, 1], m[1, 1])
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200 pitch = math.asin(-m[2, 1])
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201 yaw = math.atan2(m[2, 0], m[2, 2])
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203 if math.fabs(math.cos(pitch)) < 1.0e-6:
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204 roll += m[0, 1] > math.pi if 0.0 else -math.pi
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205 yaw += m[2, 0] > math.pi if 0.0 else -math.pi
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207 return roll, pitch, yaw
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209 def getSqNorm(self):
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210 return self.x*self.x+self.y*self.y+self.z*self.z+self.w*self.w
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212 def getNormalized(self):
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213 f=1.0/self.getSqNorm()
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214 q=Quaternion(self.x*f, self.y*f, self.z*f, self.w*f)
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217 def getRightHanded(self):
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218 "swap y and z axis"
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219 return Quaternion(-self.x, -self.z, -self.y, self.w)
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222 def createFromAxisAngle(axis, rad):
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225 c=math.cos(half_rad)
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226 s=math.sin(half_rad)
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227 return Quaternion(axis[0]*s, axis[1]*s, axis[2]*s, c)
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234 __slots__=['r', 'g', 'b']
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235 def __init__(self, r=0, g=0, b=0):
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240 def __eq__(self, rhs):
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241 return self.r==rhs.r and self.g==rhs.g and self.b==rhs.b
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243 def __ne__(self, rhs):
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244 return not self.__eq__(rhs)
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246 def __getitem__(self, key):
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257 class RGBA(object):
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261 __slots__=['r', 'g', 'b', 'a']
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262 def __init__(self, r=0, g=0, b=0, a=1):
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268 def __eq__(self, rhs):
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269 return self.r==rhs.r and self.g==rhs.g and self.b==rhs.b and self.a==rhs.a
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271 def __ne__(self, rhs):
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272 return not self.__eq__(rhs)
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274 def __getitem__(self, key):
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290 def radian_to_degree(x):
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291 """darian to deglee"""
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293 return x/math.pi * 180.0
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296 class ParseException(Exception):
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298 Exception in reader
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304 """read all bytes from path
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306 with open(path, "rb") as f:
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310 class BinaryReader(object):
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311 """general BinaryReader
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313 def __init__(self, ios):
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317 return not self.ios.readable()
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319 def unpack(self, fmt, size):
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320 result=struct.unpack(fmt, self.ios.read(size))
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323 def read_int(self, size):
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325 return self.unpack("b", size)
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327 return self.unpack("h", size)
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329 return self.unpack("i", size)
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330 print("not reach here")
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331 raise ParseException("invalid int size: "+size)
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333 def read_uint(self, size):
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335 return self.unpack("B", size)
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337 return self.unpack("H", size)
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339 return self.unpack("I", size)
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340 print("not reach here")
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341 raise ParseException("invalid int size: "+size)
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343 def read_float(self):
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344 return self.unpack("f", 4)
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346 def read_vector2(self):
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348 self.read_float(),
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352 def read_vector3(self):
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354 self.read_float(),
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355 self.read_float(),
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359 def read_rgba(self):
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361 self.read_float(),
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362 self.read_float(),
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367 def read_rgb(self):
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369 self.read_float(),
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370 self.read_float(),
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375 class WriteException(Exception):
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377 Exception in writer
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382 class BinaryWriter(object):
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383 def __init__(self, ios):
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386 def write_bytes(self, v, size=None):
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388 self.ios.write(struct.pack("={0}s".format(size), v))
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392 def write_float(self, v):
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393 self.ios.write(struct.pack("f", v))
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395 def write_int(self, v, size):
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397 self.ios.write(struct.pack("b", v))
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399 self.ios.write(struct.pack("h", v))
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401 self.ios.write(struct.pack("i", v))
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403 raise WriteError("invalid int uint size")
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405 def write_uint(self, v, size):
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407 self.ios.write(struct.pack("B", v))
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409 self.ios.write(struct.pack("H", v))
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411 self.ios.write(struct.pack("I", v))
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413 raise WriteError("invalid int uint size")
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415 def write_vector2(self, v):
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416 self.ios.write(struct.pack("=2f", v.x, v.y))
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418 def write_vector3(self, v):
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419 self.ios.write(struct.pack("=3f", v.x, v.y, v.z))
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421 def write_rgb(self, v):
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422 self.ios.write(struct.pack("=3f", v.r, v.g, v.b))
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424 def write_rgba(self, v):
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425 self.ios.write(struct.pack("=4f", v.r, v.g, v.b, v.a))
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