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DAMASK_EICMD
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"quack-like-a-duck" check for object properties. 

sum equiv Quats don't need inverse option anymore.
fixed (severe) bug in IPFcolor determination.
This commit is contained in:
Philip Eisenlohr 2013-12-09 15:49:57 +00:00
parent c1b5b802ec
commit 24a4ca8ca8
1 changed files with 19 additions and 19 deletions
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32
lib/damask/orientation.py
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@ -48,7 +48,7 @@ class Quaternion:
(self.w, self.x, self.y, self.z) (self.w, self.x, self.y, self.z)
def __mul__(self, other): def __mul__(self, other):
if isinstance(other, Quaternion): try: # quaternion
Ax = self.x Ax = self.x
Ay = self.y Ay = self.y
Az = self.z Az = self.z
@ -63,7 +63,8 @@ class Quaternion:
Q.z = + Ax * By - Ay * Bx + Az * Bw + Aw * Bz Q.z = + Ax * By - Ay * Bx + Az * Bw + Aw * Bz
Q.w = - Ax * Bx - Ay * By - Az * Bz + Aw * Bw Q.w = - Ax * Bx - Ay * By - Az * Bz + Aw * Bw
return Q return Q
elif isinstance(other, numpy.ndarray) and other.shape == (3,): # active rotation of vector (i.e. within fixed coordinate system) except: pass
try: # vector (perform active rotation, i.e. q*v*q.conjugated)
w = self.w w = self.w
x = self.x x = self.x
y = self.y y = self.y
@ -82,18 +83,19 @@ class Quaternion:
2 * x * z * Vx + 2 * y * z * Vy + \ 2 * x * z * Vx + 2 * y * z * Vy + \
z * z * Vz - 2 * w * y * Vx - y * y * Vz + \ z * z * Vz - 2 * w * y * Vx - y * y * Vz + \
2 * w * x * Vy - x * x * Vz + w * w * Vz ]) 2 * w * x * Vy - x * x * Vz + w * w * Vz ])
elif isinstance(other, (int,float,long)): except: pass
try: # scalar
Q = self.copy() Q = self.copy()
Q.w *= other Q.w *= other
Q.x *= other Q.x *= other
Q.y *= other Q.y *= other
Q.z *= other Q.z *= other
return Q return Q
else: except:
return self.copy() return self.copy()
def __imul__(self, other): def __imul__(self, other):
if isinstance(other, Quaternion): try: # Quaternion
Ax = self.x Ax = self.x
Ay = self.y Ay = self.y
Az = self.z Az = self.z
@ -106,6 +108,7 @@ class Quaternion:
self.y = -Ax * Bz + Ay * Bw + Az * Bx + Aw * By self.y = -Ax * Bz + Ay * Bw + Az * Bx + Aw * By
self.z = Ax * By - Ay * Bx + Az * Bw + Aw * Bz self.z = Ax * By - Ay * Bx + Az * Bw + Aw * Bz
self.w = -Ax * Bx - Ay * By - Az * Bz + Aw * Bw self.w = -Ax * Bx - Ay * By - Az * Bz + Aw * Bw
except: pass
return self return self
def __div__(self, other): def __div__(self, other):
@ -334,9 +337,9 @@ class Quaternion:
@classmethod @classmethod
def fromAngleAxis(cls, angle, axis): def fromAngleAxis(cls, angle, axis):
if not isinstance(axis, numpy.ndarray): axis = numpy.array(axis) if not isinstance(axis, numpy.ndarray): axis = numpy.array(axis)
axis /= numpy.linal.norm(axis) axis /= numpy.linalg.norm(axis)
s = math.sin(angle / 2) s = math.sin(angle / 2.0)
w = math.cos(angle / 2) w = math.cos(angle / 2.0)
x = axis[0] * s x = axis[0] * s
y = axis[1] * s y = axis[1] * s
z = axis[2] * s z = axis[2] * s
@ -484,7 +487,7 @@ class Symmetry:
def __cmp__(self,other): def __cmp__(self,other):
return cmp(Symmetry.lattices.index(self.lattice),Symmetry.lattices.index(other.lattice)) return cmp(Symmetry.lattices.index(self.lattice),Symmetry.lattices.index(other.lattice))
def equivalentQuaternions(self,quaternion,inverse = False): def equivalentQuaternions(self,quaternion):
''' '''
List of symmetrically equivalent quaternions based on own symmetry. List of symmetrically equivalent quaternions based on own symmetry.
''' '''
@ -553,9 +556,6 @@ class Symmetry:
[ 1.0,0.0,0.0,0.0 ], [ 1.0,0.0,0.0,0.0 ],
] ]
if inverse:
return [Quaternion(q)*quaternion for q in symQuats]
else:
return [quaternion*Quaternion(q) for q in symQuats] return [quaternion*Quaternion(q) for q in symQuats]
@ -654,11 +654,11 @@ class Symmetry:
else: else:
theComponents = numpy.dot(basis,numpy.array([vector[0],vector[1],abs(vector[2])])) theComponents = numpy.dot(basis,numpy.array([vector[0],vector[1],abs(vector[2])]))
inSST = numpy.all(theComponents >= 0.0) and numpy.all(theComponents <= 1.0) inSST = numpy.all(theComponents >= 0.0)
if color: # have to return color array if color: # have to return color array
if inSST: if inSST:
rgb = numpy.power(theComponents,0.3333333) # smoothen color ramps rgb = numpy.power(theComponents/numpy.linalg.norm(theComponents),0.3333333) # smoothen color ramps
rgb = numpy.minimum(numpy.ones(3,'d'),rgb) # limit to maximum intensity rgb = numpy.minimum(numpy.ones(3,'d'),rgb) # limit to maximum intensity
rgb /= max(rgb) # normalize to (HS)V = 1 rgb /= max(rgb) # normalize to (HS)V = 1
else: else:
@ -772,8 +772,8 @@ class Orientation:
color = numpy.zeros(3,'d') color = numpy.zeros(3,'d')
for i,q in enumerate(self.symmetry.equivalentQuaternions(self.quaternion,inverse=True)): for i,q in enumerate(self.symmetry.equivalentQuaternions(self.quaternion)):
pole = q*axis # align crystal direction to axis pole = q.conjugated()*axis # align crystal direction to axis
inSST,color = self.symmetry.inSST(pole,color=True) inSST,color = self.symmetry.inSST(pole,color=True)
if inSST: break if inSST: break