def __init__(self) :
def addSpin(name, minimum, default, maximum, slot) :
topLayout.addWidget(QtGui.QLabel(name+":"))
spin = QtGui.QSpinBox()
spin.setMinimum(minimum)
spin.setMaximum(maximum)
spin.setValue(default)
spin.valueChanged.connect(slot)
topLayout.addWidget(spin)
return spin
def addButton(layout, name, slot) :
button = QtGui.QPushButton(name)
button.clicked.connect(slot)
layout.addWidget(button)
QtGui.QWidget.__init__(self)
self.shProjections = np.array([[[[]]]])
self._editing = False
self.setLayout(QtGui.QHBoxLayout())
leftPanel = QtGui.QVBoxLayout()
self.layout().addLayout(leftPanel)
self._shknobs = SphericalHarmonicsKnobs()
topLayout = QtGui.QHBoxLayout()
self._parallelsSpin = addSpin("Parallels", 4, 50, 400, self.updateResolution)
topLayout.addStretch(1)
self._meridiansSpin = addSpin("Meridians", 4, 80, 400, self.updateResolution)
addButton(topLayout, "Reset", self._shknobs.reset)
addButton(topLayout, "Negate", self._shknobs.negate)
addButton(topLayout, "Resynth", self.resynthesize)
presetLayout1 = QtGui.QHBoxLayout()
presetLayout2 = QtGui.QHBoxLayout()
addButton(presetLayout1, "Front", self.sample_frontPoint)
addButton(presetLayout1, "Back", self.sample_backPoint)
addButton(presetLayout1, "Top", self.sample_topPoint)
addButton(presetLayout1, "Down", self.sample_downPoint)
addButton(presetLayout1, "Left", self.sample_leftPoint)
addButton(presetLayout1, "Right", self.sample_rightPoint)
addButton(presetLayout2, "Omni", self.sample_omni)
addButton(presetLayout2, "Equator", self.sample_equator)
addButton(presetLayout2, "Greenwitch", self.sample_greenwitch)
addButton(presetLayout2, "Map", self.sample_map)
leftPanel.addLayout(topLayout)
leftPanel.addLayout(presetLayout1)
leftPanel.addLayout(presetLayout2)
leftPanel.addWidget(self._shknobs)
rightPanel = QtGui.QVBoxLayout()
self.layout().addLayout(rightPanel)
self.blobView = BlobView()
rightPanel.addWidget(self.blobView)
self.synthetizedFunction = ColorField(width, height)
rightPanel.addWidget(self.synthetizedFunction)
self.targetFunction = ColorField(width, height)
rightPanel.addWidget(self.targetFunction)
rightPanel.setStretch(0,3)
rightPanel.setStretch(1,1)
rightPanel.setStretch(2,1)
self.layout().setStretch(0,1)
self.layout().setStretch(1,1)
self._shknobs.functionChanged.connect(self.reloadData)
class SphereLab(QtGui.QWidget) :
def __init__(self) :
def addSpin(name, minimum, default, maximum, slot) :
topLayout.addWidget(QtGui.QLabel(name+":"))
spin = QtGui.QSpinBox()
spin.setMinimum(minimum)
spin.setMaximum(maximum)
spin.setValue(default)
spin.valueChanged.connect(slot)
topLayout.addWidget(spin)
return spin
def addButton(layout, name, slot) :
button = QtGui.QPushButton(name)
button.clicked.connect(slot)
layout.addWidget(button)
QtGui.QWidget.__init__(self)
self.shProjections = np.array([[[[]]]])
self._editing = False
self.setLayout(QtGui.QHBoxLayout())
leftPanel = QtGui.QVBoxLayout()
self.layout().addLayout(leftPanel)
self._shknobs = SphericalHarmonicsKnobs()
topLayout = QtGui.QHBoxLayout()
self._parallelsSpin = addSpin("Parallels", 4, 50, 400, self.updateResolution)
topLayout.addStretch(1)
self._meridiansSpin = addSpin("Meridians", 4, 80, 400, self.updateResolution)
addButton(topLayout, "Reset", self._shknobs.reset)
addButton(topLayout, "Negate", self._shknobs.negate)
addButton(topLayout, "Resynth", self.resynthesize)
presetLayout1 = QtGui.QHBoxLayout()
presetLayout2 = QtGui.QHBoxLayout()
addButton(presetLayout1, "Front", self.sample_frontPoint)
addButton(presetLayout1, "Back", self.sample_backPoint)
addButton(presetLayout1, "Top", self.sample_topPoint)
addButton(presetLayout1, "Down", self.sample_downPoint)
addButton(presetLayout1, "Left", self.sample_leftPoint)
addButton(presetLayout1, "Right", self.sample_rightPoint)
addButton(presetLayout2, "Omni", self.sample_omni)
addButton(presetLayout2, "Equator", self.sample_equator)
addButton(presetLayout2, "Greenwitch", self.sample_greenwitch)
addButton(presetLayout2, "Map", self.sample_map)
leftPanel.addLayout(topLayout)
leftPanel.addLayout(presetLayout1)
leftPanel.addLayout(presetLayout2)
leftPanel.addWidget(self._shknobs)
rightPanel = QtGui.QVBoxLayout()
self.layout().addLayout(rightPanel)
self.blobView = BlobView()
rightPanel.addWidget(self.blobView)
self.synthetizedFunction = ColorField(width, height)
rightPanel.addWidget(self.synthetizedFunction)
self.targetFunction = ColorField(width, height)
rightPanel.addWidget(self.targetFunction)
rightPanel.setStretch(0,3)
rightPanel.setStretch(1,1)
rightPanel.setStretch(2,1)
self.layout().setStretch(0,1)
self.layout().setStretch(1,1)
self._shknobs.functionChanged.connect(self.reloadData)
def updateResolution(self) :
self.reloadData()
def sphericalHarmonicsMatrix(self) :
return self._shknobs.sphericalHarmonicsMatrix()
def setSphericalHarmonicsMatrix(self, array) :
self._shknobs.setSphericalHarmonicsMatrix(array)
def loadFromSamples(self, image) :
h,w = image.shape
print "Display data..."
self.targetFunction.format(w, h, ColorField.signedScale)
self.targetFunction.data()[:] = 127 + image*127./(max(1.,abs(image.max())))
self.targetFunction.reload()
print "Project to SH..."
imageInSH = projectImageToSH(image)
imageInSH *= orthonormalization
print "Upload SH components to knobs..."
self.setSphericalHarmonicsMatrix(imageInSH)
print "Reloading..."
self.reloadData()
def reloadData(self) :
nelevations = self._parallelsSpin.value()
nazimuths = self._meridiansSpin.value()
if self.shProjections.shape[:2] != (nelevations, nazimuths) :
print "Reshaping %ix%x..."%(nelevations, nazimuths)
self.elevations, self.azimuths, self.shProjections = shGrid(nelevations, nazimuths)
self.shProjections *= orthonormalization
print "Reshape outputs..."
self.sphericalPoints = np.array([
[self.elevations[ei], self.azimuths[ai], 0 ]
for ei in xrange(nelevations)
for ai in xrange(nazimuths)
])
self.indexes = np.array(
[[
[i+nazimuths*j,i+nazimuths*(j+1)]
for i in xrange(nazimuths) ]
for j in xrange(nelevations-1) ]
).flatten()
# taking coeficients from the knobs
shMatrix = self.sphericalHarmonicsMatrix()
self.data = self.shProjections.reshape(nazimuths*nelevations, shMatrix.size).dot(
shMatrix.reshape(shMatrix.size )
).reshape(self.shProjections.shape[:2])
self.sphericalPoints[:,2] = (5*self.data).reshape(nelevations*nazimuths)
self.blobView.setEadPoints(self.sphericalPoints)
xyzs = np.array([ead2xyz(e,a,abs(d)) for e,a,d in self.sphericalPoints])
self.blobView.scene()._vertices = xyzs
self.blobView.scene()._normals = xyzs
self.blobView.scene()._meshColors = np.array([
[1.,.0,.0, .6] if d<0 else [0.,0.,1., .9]
for e,a,d in self.sphericalPoints])
self.blobView.scene()._indexes = self.indexes
self.blobView.update()
maxValue = abs(self.data).max()
if maxValue > 1 : self.data /= maxValue
self.synthetizedFunction.format(nazimuths, nelevations, ColorField.signedScale)
self.synthetizedFunction.data()[:] = self.data/(2/255.)+127
self.synthetizedFunction.reload()
# Sphere sampling resolution for the synthetic data sets
sampleResolution = 36*4, 18*4
def resynthesize(self) :
w,h = self.sampleResolution
image = self.data
self.loadFromSamples(image)
def sample_map(self) :
w,h = self.sampleResolution
image = imageData("16bit_world_height.png", w, h)
max = float(image.max())
min = float(image.min())
image = (image-min)/(max-min)
self.loadFromSamples(image)
def sample_omni(self) :
w,h = self.sampleResolution
image = np.ones((h,w))
self.loadFromSamples(image)
def sample_frontPoint(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[h/2,w/2] = +1
self.loadFromSamples(image)
def sample_frontNegativePoint(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[h/2,w/2] = -1
self.loadFromSamples(image)
def sample_backNegativePoint(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[h/2,0] = -1
self.loadFromSamples(image)
def sample_backPoint(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[h/2,0] = +1
self.loadFromSamples(image)
def sample_rightPoint(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[h/2,w/4] = +1
self.loadFromSamples(image)
def sample_leftPoint(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[h/2,3*w/4] = +1
self.loadFromSamples(image)
def sample_topPoint(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[1,:] = +1 # north pole
self.loadFromSamples(image)
def sample_downPoint(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[-2,:] = +1 # south pole
self.loadFromSamples(image)
def sample_equator(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[h/2,:] = +1 # equator
self.loadFromSamples(image)
def sample_greenwitch(self) :
w,h = self.sampleResolution
image = np.zeros((h,w))
image[:,w/2] = +1 # Grenwitch
self.loadFromSamples(image)
