def gaussianSmooth(self, sigma=(2, 2, 2), radius=None):
"""Performs a convolution of the input Volume with a gaussian.
:param float,list sigma: standard deviation(s) in voxel units.
A list can be given to smooth in the three direction differently.
:param float,list radius: radius factor(s) determine how far out the gaussian
kernel will go before being clamped to zero. A list can be given too.
"""
gsf = vtk.vtkImageGaussianSmooth()
gsf.SetDimensionality(3)
gsf.SetInputData(self.imagedata())
if utils.isSequence(sigma):
gsf.SetStandardDeviations(sigma)
else:
gsf.SetStandardDeviation(sigma)
if radius is not None:
if utils.isSequence(radius):
gsf.SetRadiusFactors(radius)
else:
gsf.SetRadiusFactor(radius)
gsf.Update()
return self._update(gsf.GetOutput())
def __init__(self, obj=None):
vtk.vtkImageActor.__init__(self)
Base3DProp.__init__(self)
if utils.isSequence(obj) and len(obj):
iac = vtk.vtkImageAppendComponents()
for i in range(3):
#arr = np.flip(np.flip(array[:,:,i], 0), 0).ravel()
arr = np.flip(obj[:, :, i], 0).ravel()
varb = numpy_to_vtk(arr,
deep=True,
array_type=vtk.VTK_UNSIGNED_CHAR)
imgb = vtk.vtkImageData()
imgb.SetDimensions(obj.shape[1], obj.shape[0], 1)
imgb.GetPointData().SetScalars(varb)
iac.AddInputData(0, imgb)
iac.Update()
img = iac.GetOutput()
self.SetInputData(img)
elif isinstance(obj, vtk.vtkImageData):
self.SetInputData(obj)
img = obj
elif isinstance(obj, str):
if "https://" in obj:
import vedo.io as io
obj = io.download(obj, verbose=False)
if ".png" in obj:
picr = vtk.vtkPNGReader()
elif ".jpg" in obj or ".jpeg" in obj:
picr = vtk.vtkJPEGReader()
elif ".bmp" in obj:
picr = vtk.vtkBMPReader()
elif ".tif" in obj:
picr = vtk.vtkTIFFReader()
else:
colors.printc("Cannot understand picture format", obj, c='r')
return
picr.SetFileName(obj)
picr.Update()
img = picr.GetOutput()
self.SetInputData(img)
else:
img = vtk.vtkImageData()
self.SetInputData(img)
self._data = img
self._mapper = self.GetMapper()
def _buildtetugrid(self, points, cells):
ug = vtk.vtkUnstructuredGrid()
if len(points) == 0:
return ug
if not utils.isSequence(points[0]):
return ug
if len(cells) == 0:
return ug
if not utils.isSequence(cells[0]):
tets = []
nf = cells[0] + 1
for i, cl in enumerate(cells):
if i == nf or i == 0:
k = i + 1
nf = cl + k
cell = [cells[j + k] for j in range(cl)]
tets.append(cell)
cells = tets
sourcePoints = vtk.vtkPoints()
varr = numpy_to_vtk(np.ascontiguousarray(points), deep=True)
sourcePoints.SetData(varr)
ug.SetPoints(sourcePoints)
sourceTets = vtk.vtkCellArray()
for f in cells:
ele = vtk.vtkTetra()
pid = ele.GetPointIds()
for i, fi in enumerate(f):
pid.SetId(i, fi)
sourceTets.InsertNextCell(ele)
ug.SetCells(vtk.VTK_TETRA, sourceTets)
return ug
def exe_info(args):
for i in range(2, len(sys.argv)):
file = sys.argv[i]
try:
A = load(file)
if isinstance(A, np.ndarray):
printInfo(A)
elif isSequence(A):
for a in A:
printInfo(a)
else:
printInfo(A)
except:
printc("Could not load:", file, "skip.", c="r")
printc("_" * 65, bold=0)
printc("vedo version :", __version__, invert=1, end=' ')
printc("https://vedo.embl.es", underline=1, italic=1)
printc("vtk version :", vtk.vtkVersion().GetVTKVersion())
printc("python version :", sys.version.replace("\n", ""))
printc("python interpreter:", sys.executable)
printc("vedo installation :", settings.installdir)
try:
import platform
printc("system :", platform.system(), platform.release(),
os.name, platform.machine())
except:
pass
try:
import k3d
printc("k3d version :", k3d.__version__, bold=0, dim=1)
except:
pass
try:
import ipyvtk_simple
printc("ipyvtk version :", ipyvtk_simple.__version__, bold=0, dim=1)
except:
pass
try:
import itkwidgets
printc("itkwidgets version:", itkwidgets.__version__, bold=0, dim=1)
except:
pass
try:
import panel
printc("panel version :", panel.__version__, bold=0, dim=1)
except:
pass
def alphaGradient(self, alphaGrad, vmin=None, vmax=None):
"""
Assign a set of tranparencies to a volume's gradient
along the range of the scalar value.
A single constant value can also be assigned.
The gradient function is used to decrease the opacity
in the "flat" regions of the volume while maintaining the opacity
at the boundaries between material types. The gradient is measured
as the amount by which the intensity changes over unit distance.
The format for alphaGrad is the same as for method ``volume.alpha()``.
|read_volume2| |read_volume2.py|_
"""
if vmin is None:
vmin, _ = self._data.GetScalarRange()
if vmax is None:
_, vmax = self._data.GetScalarRange()
self._alphaGrad = alphaGrad
volumeProperty = self.GetProperty()
if alphaGrad is None:
volumeProperty.DisableGradientOpacityOn()
return self
else:
volumeProperty.DisableGradientOpacityOff()
gotf = volumeProperty.GetGradientOpacity()
if utils.isSequence(alphaGrad):
alphaGrad = np.array(alphaGrad)
if len(alphaGrad.shape
) == 1: # user passing a flat list e.g. (0.0, 0.3, 0.9, 1)
for i, al in enumerate(alphaGrad):
xalpha = vmin + (vmax - vmin) * i / (len(alphaGrad) - 1)
# Create transfer mapping scalar value to gradient opacity
gotf.AddPoint(xalpha, al)
elif len(alphaGrad.shape) == 2: # user passing [(x0,alpha0), ...]
gotf.AddPoint(vmin, alphaGrad[0][1])
for xalpha, al in alphaGrad:
# Create transfer mapping scalar value to opacity
gotf.AddPoint(xalpha, al)
gotf.AddPoint(vmax, alphaGrad[-1][1])
#colors.printc("alphaGrad at", round(xalpha, 1), "\tset to", al, c="b", bold=0)
else:
gotf.AddPoint(vmin, alphaGrad) # constant alphaGrad
gotf.AddPoint(vmax, alphaGrad)
return self
def MeshLines(*inputobj, **options):
"""
Build the line segments between two lists of points `startPoints` and `endPoints`.
`startPoints` can be also passed in the form ``[[point1, point2], ...]``.
A dolfin ``Mesh`` that was deformed/modified by a function can be
passed together as inputs.
:param float scale: apply a rescaling factor to the length
"""
scale = options.pop("scale", 1)
lw = options.pop("lw", 1)
c = options.pop("c", 'grey')
alpha = options.pop("alpha", 1)
mesh, u = _inputsort(inputobj)
if not mesh:
return None
if hasattr(mesh, "coordinates"):
startPoints = mesh.coordinates()
else:
startPoints = mesh.geometry.points
u_values = _compute_uvalues(u, mesh)
if not utils.isSequence(u_values[0]):
printc("~times Error: cannot show Lines for 1D scalar values!", c=1)
raise RuntimeError()
endPoints = startPoints + u_values
if u_values.shape[1] == 2: # u_values is 2D
u_values = np.insert(u_values, 2, 0, axis=1) # make it 3d
startPoints = np.insert(startPoints, 2, 0, axis=1) # make it 3d
endPoints = np.insert(endPoints, 2, 0, axis=1) # make it 3d
actor = shapes.Lines(startPoints,
endPoints,
scale=scale,
lw=lw,
c=c,
alpha=alpha)
actor.mesh = mesh
actor.u = u
actor.u_values = u_values
return actor
def MeshArrows(*inputobj, **options):
"""
Build arrows representing displacements.
:param float s: cross-section size of the arrow
:param float rescale: apply a rescaling factor to the length
"""
s = options.pop("s", None)
scale = options.pop("scale", 1)
c = options.pop("c", "gray")
alpha = options.pop("alpha", 1)
res = options.pop("res", 12)
mesh, u = _inputsort(inputobj)
if not mesh:
return None
if hasattr(mesh, "coordinates"):
startPoints = mesh.coordinates()
else:
startPoints = mesh.geometry.points
u_values = _compute_uvalues(u, mesh)
if not utils.isSequence(u_values[0]):
printc("~times Error: cannot show Arrows for 1D scalar values!", c=1)
raise RuntimeError()
endPoints = startPoints + u_values
if u_values.shape[1] == 2: # u_values is 2D
u_values = np.insert(u_values, 2, 0, axis=1) # make it 3d
startPoints = np.insert(startPoints, 2, 0, axis=1) # make it 3d
endPoints = np.insert(endPoints, 2, 0, axis=1) # make it 3d
actor = shapes.Arrows(startPoints,
endPoints,
s=s,
scale=scale,
alpha=alpha,
res=res)
actor.color(c)
actor.mesh = mesh
actor.u = u
actor.u_values = u_values
return actor
def _parse(self, objs, t, duration):
if t is None:
if self._lastT:
t = self._lastT
else:
t = 0.0
if duration is None:
if self._lastDuration:
duration = self._lastDuration
else:
duration = 0.0
if objs is None:
if self._lastActs:
objs = self._lastActs
else:
printc('Need to specify actors!', c='r')
raise RuntimeError
objs2 = objs
if isSequence(objs):
objs2 = objs
else:
objs2 = [objs]
#quantize time steps and duration
t = int(t / self.timeResolution + 0.5) * self.timeResolution
nsteps = int(duration / self.timeResolution + 0.5)
duration = nsteps * self.timeResolution
rng = np.linspace(t, t + duration, nsteps + 1)
self._lastT = t
self._lastDuration = duration
self._lastActs = objs2
for a in objs2:
if a not in self.actors:
self.actors.append(a)
return objs2, t, duration, rng
def _buildtetugrid(self, points, cells):
if len(points) == 0:
return None
if not utils.isSequence(points[0]):
return None
ug = vtk.vtkUnstructuredGrid()
sourcePoints = vtk.vtkPoints()
varr = numpy_to_vtk(np.ascontiguousarray(points), deep=True)
sourcePoints.SetData(varr)
ug.SetPoints(sourcePoints)
sourceTets = vtk.vtkCellArray()
for f in cells:
ele = vtk.vtkTetra()
pid = ele.GetPointIds()
for i, fi in enumerate(f):
pid.SetId(i, fi)
sourceTets.InsertNextCell(ele)
ug.SetCells(vtk.VTK_TETRA, sourceTets)
return ug
def append(self, volumes, axis='z', preserveExtents=False):
"""
Take the components from multiple inputs and merges them into one output.
Except for the append axis, all inputs must have the same extent.
All inputs must have the same number of scalar components.
The output has the same origin and spacing as the first input.
The origin and spacing of all other inputs are ignored.
All inputs must have the same scalar type.
:param int,str axis: axis expanded to hold the multiple images.
:param bool preserveExtents: if True, the extent of the inputs is used to place
the image in the output. The whole extent of the output is the union of the input
whole extents. Any portion of the output not covered by the inputs is set to zero.
The origin and spacing is taken from the first input.
.. code-block:: python
from vedo import load, datadir
vol = load(datadir+'embryo.tif')
vol.append(vol, axis='x').show()
"""
ima = vtk.vtkImageAppend()
ima.SetInputData(self.imagedata())
if not utils.isSequence(volumes):
volumes = [volumes]
for volume in volumes:
if isinstance(volume, vtk.vtkImageData):
ima.AddInputData(volume)
else:
ima.AddInputData(volume.imagedata())
ima.SetPreserveExtents(preserveExtents)
if axis == "x":
axis = 0
elif axis == "y":
axis = 1
elif axis == "z":
axis = 2
ima.SetAppendAxis(axis)
ima.Update()
return self._update(ima.GetOutput())
def append(self, pictures, axis='z', preserveExtents=False):
"""
Append the input images to the current one along the specified axis.
Except for the append axis, all inputs must have the same extent.
All inputs must have the same number of scalar components.
The output has the same origin and spacing as the first input.
The origin and spacing of all other inputs are ignored.
All inputs must have the same scalar type.
:param int,str axis: axis expanded to hold the multiple images.
:param bool preserveExtents: if True, the extent of the inputs is used to place
the image in the output. The whole extent of the output is the union of the input
whole extents. Any portion of the output not covered by the inputs is set to zero.
The origin and spacing is taken from the first input.
.. code-block:: python
from vedo import Picture, dataurl
pic = Picture(dataurl+'dog.jpg').pad()
pic.append([pic,pic,pic], axis='y')
pic.append([pic,pic,pic,pic], axis='x')
pic.show(axes=1)
"""
ima = vtk.vtkImageAppend()
ima.SetInputData(self._data)
if not utils.isSequence(pictures):
pictures = [pictures]
for p in pictures:
if isinstance(p, vtk.vtkImageData):
ima.AddInputData(p)
else:
ima.AddInputData(p._data)
ima.SetPreserveExtents(preserveExtents)
if axis == "x":
axis = 0
elif axis == "y":
axis = 1
ima.SetAppendAxis(axis)
ima.Update()
return self._update(ima.GetOutput())
def delaunay3D(mesh, alphaPar=0, tol=None, boundary=False):
"""Create 3D Delaunay triangulation of input points."""
deln = vtk.vtkDelaunay3D()
if utils.isSequence(mesh):
pd = vtk.vtkPolyData()
vpts = vtk.vtkPoints()
vpts.SetData(numpy_to_vtk(np.ascontiguousarray(mesh), deep=True))
pd.SetPoints(vpts)
deln.SetInputData(pd)
else:
deln.SetInputData(mesh.GetMapper().GetInput())
deln.SetAlpha(alphaPar)
deln.AlphaTetsOn()
deln.AlphaTrisOff()
deln.AlphaLinesOff()
deln.AlphaVertsOff()
if tol:
deln.SetTolerance(tol)
deln.SetBoundingTriangulation(boundary)
deln.Update()
m = TetMesh(deln.GetOutput())
return m
def pad(self, pixels=10, value=255):
"""
Add the specified number of pixels at the picture borders.
Pixels can be a list formatted as [left,right,bottom,top].
Parameters
----------
pixels : int,list , optional
number of pixels to be added (or a list of length 4). The default is 10.
value : int, optional
intensity value (gray-scale color) of the padding. The default is 255.
"""
x0,x1,y0,y1,_z0,_z1 = self._data.GetExtent()
pf = vtk.vtkImageConstantPad()
pf.SetInputData(self._data)
pf.SetConstant(value)
if utils.isSequence(pixels):
pf.SetOutputWholeExtent(x0-pixels[0],x1+pixels[1],
y0-pixels[2],y1+pixels[3], 0,0)
else:
pf.SetOutputWholeExtent(x0-pixels,x1+pixels, y0-pixels,y1+pixels, 0,0)
pf.Update()
img = pf.GetOutput()
return self._update(img)
def __init__(
self,
inputobj=None,
c='RdBu_r',
alpha=(0.0, 0.0, 0.2, 0.4, 0.8, 1.0),
alphaGradient=None,
alphaUnit=1,
mode=0,
shade=False,
spacing=None,
dims=None,
origin=None,
mapper='smart',
):
vtk.vtkVolume.__init__(self)
BaseGrid.__init__(self)
###################
if isinstance(inputobj, str):
if "https://" in inputobj:
from vedo.io import download
inputobj = download(inputobj, verbose=False) # fpath
elif os.path.isfile(inputobj):
pass
else:
inputobj = sorted(glob.glob(inputobj))
###################
if 'gpu' in mapper:
self._mapper = vtk.vtkGPUVolumeRayCastMapper()
elif 'opengl_gpu' in mapper:
self._mapper = vtk.vtkOpenGLGPUVolumeRayCastMapper()
elif 'smart' in mapper:
self._mapper = vtk.vtkSmartVolumeMapper()
elif 'fixed' in mapper:
self._mapper = vtk.vtkFixedPointVolumeRayCastMapper()
elif isinstance(mapper, vtk.vtkMapper):
self._mapper = mapper
else:
print("Error unknown mapper type", [mapper])
raise RuntimeError()
self.SetMapper(self._mapper)
###################
inputtype = str(type(inputobj))
#colors.printc('Volume inputtype', inputtype)
if inputobj is None:
img = vtk.vtkImageData()
elif utils.isSequence(inputobj):
if isinstance(inputobj[0], str): # scan sequence of BMP files
ima = vtk.vtkImageAppend()
ima.SetAppendAxis(2)
pb = utils.ProgressBar(0, len(inputobj))
for i in pb.range():
f = inputobj[i]
picr = vtk.vtkBMPReader()
picr.SetFileName(f)
picr.Update()
mgf = vtk.vtkImageMagnitude()
mgf.SetInputData(picr.GetOutput())
mgf.Update()
ima.AddInputData(mgf.GetOutput())
pb.print('loading...')
ima.Update()
img = ima.GetOutput()
else:
if "ndarray" not in inputtype:
inputobj = np.array(inputobj)
if len(inputobj.shape) == 1:
varr = numpy_to_vtk(inputobj,
deep=True,
array_type=vtk.VTK_FLOAT)
else:
if len(inputobj.shape) > 2:
inputobj = np.transpose(inputobj, axes=[2, 1, 0])
varr = numpy_to_vtk(inputobj.ravel(order='F'),
deep=True,
array_type=vtk.VTK_FLOAT)
varr.SetName('input_scalars')
img = vtk.vtkImageData()
if dims is not None:
img.SetDimensions(dims)
else:
if len(inputobj.shape) == 1:
colors.printc(
"Error: must set dimensions (dims keyword) in Volume.",
c='r')
raise RuntimeError()
img.SetDimensions(inputobj.shape)
img.GetPointData().SetScalars(varr)
#to convert rgb to numpy
# img_scalar = data.GetPointData().GetScalars()
# dims = data.GetDimensions()
# n_comp = img_scalar.GetNumberOfComponents()
# temp = numpy_support.vtk_to_numpy(img_scalar)
# numpy_data = temp.reshape(dims[1],dims[0],n_comp)
# numpy_data = numpy_data.transpose(0,1,2)
# numpy_data = np.flipud(numpy_data)
elif "ImageData" in inputtype:
img = inputobj
elif isinstance(inputobj, Volume):
img = inputobj.inputdata()
elif "UniformGrid" in inputtype:
img = inputobj
elif hasattr(
inputobj,
"GetOutput"): # passing vtk object, try extract imagdedata
if hasattr(inputobj, "Update"):
inputobj.Update()
img = inputobj.GetOutput()
elif isinstance(inputobj, str):
from vedo.io import loadImageData, download
if "https://" in inputobj:
inputobj = download(inputobj, verbose=False)
img = loadImageData(inputobj)
else:
colors.printc("Volume(): cannot understand input type:\n",
inputtype,
c='r')
return
if dims is not None:
img.SetDimensions(dims)
if origin is not None:
img.SetOrigin(origin) ### DIFFERENT from volume.origin()!
if spacing is not None:
img.SetSpacing(spacing)
self._data = img
self._mapper.SetInputData(img)
self.mode(mode).color(c).alpha(alpha).alphaGradient(alphaGradient)
self.GetProperty().SetShade(True)
self.GetProperty().SetInterpolationType(1)
self.GetProperty().SetScalarOpacityUnitDistance(alphaUnit)
# remember stuff:
self._mode = mode
self._color = c
self._alpha = alpha
self._alphaGrad = alphaGradient
self._alphaUnit = alphaUnit
def __init__(self, obj=None, channels=(), flip=False):
vtk.vtkImageActor.__init__(self)
vedo.base.Base3DProp.__init__(self)
if utils.isSequence(obj) and len(obj): # passing array
obj = np.asarray(obj)
if len(obj.shape) == 3: # has shape (nx,ny, ncolor_alpha_chan)
iac = vtk.vtkImageAppendComponents()
nchan = obj.shape[
2] # get number of channels in inputimage (L/LA/RGB/RGBA)
for i in range(nchan):
if flip:
arr = np.flip(np.flip(obj[:, :, i], 0), 0).ravel()
else:
arr = np.flip(obj[:, :, i], 0).ravel()
varb = numpy_to_vtk(arr,
deep=True,
array_type=vtk.VTK_UNSIGNED_CHAR)
varb.SetName("RGBA")
imgb = vtk.vtkImageData()
imgb.SetDimensions(obj.shape[1], obj.shape[0], 1)
imgb.GetPointData().AddArray(varb)
imgb.GetPointData().SetActiveScalars("RGBA")
iac.AddInputData(imgb)
iac.Update()
img = iac.GetOutput()
elif len(obj.shape) == 2: # black and white
if flip:
arr = np.flip(obj[:, :], 0).ravel()
else:
arr = obj.ravel()
varb = numpy_to_vtk(arr,
deep=True,
array_type=vtk.VTK_UNSIGNED_CHAR)
varb.SetName("RGBA")
img = vtk.vtkImageData()
img.SetDimensions(obj.shape[1], obj.shape[0], 1)
img.GetPointData().AddArray(varb)
img.GetPointData().SetActiveScalars("RGBA")
elif isinstance(obj, vtk.vtkImageData):
img = obj
elif isinstance(obj, str):
if "https://" in obj:
obj = vedo.io.download(obj, verbose=False)
fname = obj.lower()
if fname.endswith(".png"):
picr = vtk.vtkPNGReader()
elif fname.endswith(".jpg") or fname.endswith(".jpeg"):
picr = vtk.vtkJPEGReader()
elif fname.endswith(".bmp"):
picr = vtk.vtkBMPReader()
elif fname.endswith(".tif") or fname.endswith(".tiff"):
picr = vtk.vtkTIFFReader()
picr.SetOrientationType(vedo.settings.tiffOrientationType)
else:
colors.printc("Cannot understand picture format", obj, c='r')
return
picr.SetFileName(obj)
self.filename = obj
picr.Update()
img = picr.GetOutput()
else:
img = vtk.vtkImageData()
# select channels
nchans = len(channels)
if nchans and img.GetPointData().GetScalars().GetNumberOfComponents(
) > nchans:
pec = vtk.vtkImageExtractComponents()
pec.SetInputData(img)
if nchans == 3:
pec.SetComponents(channels[0], channels[1], channels[2])
elif nchans == 2:
pec.SetComponents(channels[0], channels[1])
elif nchans == 1:
pec.SetComponents(channels[0])
pec.Update()
img = pec.GetOutput()
self._data = img
self.SetInputData(img)
sx, sy, _ = img.GetDimensions()
self.shape = np.array([sx, sy])
self._mapper = self.GetMapper()
def __init__(self, obj=None):
vtk.vtkImageActor.__init__(self)
vedo.base.Base3DProp.__init__(self)
if utils.isSequence(obj) and len(obj): # passing array
obj = np.asarray(obj)
if len(obj.shape) == 3: # has shape (nx,ny, ncolor_alpha_chan)
iac = vtk.vtkImageAppendComponents()
nchan = obj.shape[
2] # get number of channels in inputimage (L/LA/RGB/RGBA)
for i in range(nchan):
#arr = np.flip(np.flip(array[:,:,i], 0), 0).ravel()
arr = np.flip(obj[:, :, i], 0).ravel()
varb = numpy_to_vtk(arr,
deep=True,
array_type=vtk.VTK_UNSIGNED_CHAR)
varb.SetName("RGBA")
imgb = vtk.vtkImageData()
imgb.SetDimensions(obj.shape[1], obj.shape[0], 1)
imgb.GetPointData().SetScalars(varb)
iac.AddInputData(imgb)
iac.Update()
img = iac.GetOutput()
elif len(obj.shape) == 2: # black and white
arr = np.flip(obj[:, :], 0).ravel()
varb = numpy_to_vtk(arr,
deep=True,
array_type=vtk.VTK_UNSIGNED_CHAR)
varb.SetName("RGBA")
img = vtk.vtkImageData()
img.SetDimensions(obj.shape[1], obj.shape[0], 1)
img.GetPointData().SetScalars(varb)
elif isinstance(obj, vtk.vtkImageData):
img = obj
elif isinstance(obj, str):
if "https://" in obj:
obj = vedo.io.download(obj, verbose=False)
if ".png" in obj.lower():
picr = vtk.vtkPNGReader()
elif ".jpg" in obj.lower() or ".jpeg" in obj.lower():
picr = vtk.vtkJPEGReader()
elif ".bmp" in obj.lower():
picr = vtk.vtkBMPReader()
elif ".tif" in obj.lower():
picr = vtk.vtkTIFFReader()
else:
colors.printc("Cannot understand picture format", obj, c='r')
return
picr.SetFileName(obj)
self.filename = obj
picr.Update()
img = picr.GetOutput()
else:
img = vtk.vtkImageData()
self._data = img
self.SetInputData(img)
sx, sy, _ = img.GetDimensions()
self.shape = np.array([sx, sy])
self._mapper = self.GetMapper()
def printc(
*strings,
c=None,
bc=None,
bold=True,
italic=False,
blink=False,
underline=False,
strike=False,
dim=False,
invert=False,
box="",
dbg=False,
end="\n",
flush=True,
):
"""
Print to terminal in color (any color!).
:param c: foreground color name or (r,g,b)
:param bc: background color name or (r,g,b)
:param bool bold: boldface [True]
:param bool italic: italic [False]
:param bool blink: blinking text [False]
:param bool underline: underline text [False]
:param bool strike: strike through text [False]
:param bool dim: make text look dimmer [False]
:param bool invert: invert background and forward colors [False]
:param box: print a box with specified text character ['']
:param bool flush: flush buffer after printing [True]
:param str end: the end character to be printed [newline]
:param bool dbg: print debug information about the evironment
:Example:
.. code-block:: python
from vedo.colors import printc
printc('anything', c='tomato', bold=False, end='' )
printc('anything', 455.5, vtkObject, c='lightblue')
printc(299792.48, c=4)
.. hint:: |colorprint.py|_
|colorprint|
"""
if not settings.enablePrintColor:
print(*strings, end=end, flush=flush)
return
if not settings.notebookBackend:
if not _terminal_has_colors:
print(*strings, end=end, flush=flush)
return
try: # -------------------------------------------------------------
txt = str()
ns = len(strings) - 1
separator = " "
offset = 0
for i, s in enumerate(strings):
if i == ns:
separator = ""
if "\\" in repr(s): # "in" for some reasons changes s
from vedo.shapes import _reps
for k in emoji.keys():
if k in str(s):
s = s.replace(k, emoji[k])
offset += 1
for k, rp in _reps: # check symbols in shapes._reps
if k in str(s):
s = s.replace(k, rp)
offset += 1
txt += str(s) + separator
special, cseq, reset = "", "", u"\u001b[0m"
oneletter_colors = {
'k':
u'\u001b[30;1m', # because these are supported by most terminals
'r': u'\u001b[31;1m',
'g': u'\u001b[32;1m',
'y': u'\u001b[33;1m',
'b': u'\u001b[34;1m',
'm': u'\u001b[35;1m',
'c': u'\u001b[36;1m',
'w': u'\u001b[37;1m',
}
if c is not None:
if c is True:
c = "g"
elif c is False:
c = "r"
if isinstance(c, str) and c in oneletter_colors.keys():
cseq += oneletter_colors[c]
else:
r, g, b = getColor(c) # not all terms support this syntax
cseq += f"\x1b[38;2;{int(r*255)};{int(g*255)};{int(b*255)}m"
if bc:
if bc in oneletter_colors.keys():
cseq += oneletter_colors[bc]
else:
r, g, b = getColor(bc)
cseq += f"\x1b[48;2;{int(r*255)};{int(g*255)};{int(b*255)}m"
if box is True:
box = '-'
if underline and not box:
special += "\x1b[4m"
if strike and not box:
special += "\x1b[9m"
if dim:
special += "\x1b[2m"
if invert:
special += "\x1b[7m"
if bold:
special += "\x1b[1m"
if italic:
special += "\x1b[3m"
if blink:
special += "\x1b[5m"
if box and not ("\n" in txt):
box = box[0]
boxv = box
if box in ["_", "=", "-", "+", "~"]:
boxv = "|"
if box == "_" or box == ".":
outtxt = special + cseq + " " + box * (len(txt) + offset +
2) + " \n"
outtxt += boxv + " " * (len(txt) + 2) + boxv + "\n"
else:
outtxt = special + cseq + box * (len(txt) + offset + 4) + "\n"
outtxt += boxv + " " + txt + " " + boxv + "\n"
if box == "_":
outtxt += "|" + box * (len(txt) + offset +
2) + "|" + reset + end
else:
outtxt += box * (len(txt) + offset + 4) + reset + end
sys.stdout.write(outtxt)
else:
out = special + cseq + txt + reset
if dbg:
from inspect import currentframe, getframeinfo
from vedo.utils import isSequence, precision
cf = currentframe().f_back
cfi = getframeinfo(cf)
fname = os.path.basename(getframeinfo(cf).filename)
print("\x1b[7m\x1b[3m\x1b[37m" + fname + " line:\x1b[1m" +
str(cfi.lineno) + reset,
end='')
print('\x1b[3m\x1b[37m\x1b[2m', "\U00002501" * 30,
time.ctime(), reset)
if txt:
print(" \x1b[37m\x1b[1mMessage : " + out)
print(" \x1b[37m\x1b[1mFunction:\x1b[0m\x1b[37m " +
str(cfi.function))
print(' \x1b[1mLocals :' + reset)
for loc in cf.f_locals.keys():
obj = cf.f_locals[loc]
var = repr(obj)
if 'module ' in var: continue
if 'function ' in var: continue
if 'class ' in var: continue
if '_' in loc: continue
if hasattr(obj, 'name'):
if not obj.name:
oname = str(type(obj))
else:
oname = obj.name
var = oname + ', at ' + precision(obj.GetPosition(), 3)
print(' \x1b[37m', loc, '=',
var[:60].replace('\n', ''), reset)
if isSequence(obj) and len(obj) > 4:
print(' \x1b[37m\x1b[2m\x1b[3m len:',
len(obj), ' min:', precision(min(obj),
4), ' max:',
precision(max(obj), 4), reset)
print(" \x1b[1m\x1b[37mElapsed time:\x1b[0m\x1b[37m",
str(time.time() - _global_start_time)[:6], 's' + reset)
else:
sys.stdout.write(out + end)
except: # ------------------------------------------------------------- fallback
print(*strings, end=end)
if flush:
sys.stdout.flush()
def __init__(self, inputobj=None):
vtk.vtkActor.__init__(self)
BaseGrid.__init__(self)
inputtype = str(type(inputobj))
self._data = None
self._polydata = None
self.name = "UGrid"
###################
if inputobj is None:
self._data = vtk.vtkUnstructuredGrid()
elif utils.isSequence(inputobj):
pts, cells, celltypes = inputobj
self._data = vtk.vtkUnstructuredGrid()
if not utils.isSequence(cells[0]):
tets = []
nf = cells[0] + 1
for i, cl in enumerate(cells):
if i == nf or i == 0:
k = i + 1
nf = cl + k
cell = [cells[j + k] for j in range(cl)]
tets.append(cell)
cells = tets
# This would fill the points and use those to define orientation
vpts = utils.numpy2vtk(pts, dtype=float)
points = vtk.vtkPoints()
points.SetData(vpts)
self._data.SetPoints(points)
# This fill the points and use cells to define orientation
# points = vtk.vtkPoints()
# for c in cells:
# for pid in c:
# points.InsertNextPoint(pts[pid])
# self._data.SetPoints(points)
# Fill cells
# https://vtk.org/doc/nightly/html/vtkCellType_8h_source.html
for i, ct in enumerate(celltypes):
cell_conn = cells[i]
if ct == vtk.VTK_HEXAHEDRON:
cell = vtk.vtkHexahedron()
elif ct == vtk.VTK_TETRA:
cell = vtk.vtkTetra()
elif ct == vtk.VTK_VOXEL:
cell = vtk.vtkVoxel()
elif ct == vtk.VTK_WEDGE:
cell = vtk.vtkWedge()
elif ct == vtk.VTK_PYRAMID:
cell = vtk.vtkPyramid()
elif ct == vtk.VTK_HEXAGONAL_PRISM:
cell = vtk.vtkHexagonalPrism()
elif ct == vtk.VTK_PENTAGONAL_PRISM:
cell = vtk.vtkPentagonalPrism()
else:
print("UGrid: cell type", ct, "not implemented. Skip.")
continue
cpids = cell.GetPointIds()
for j, pid in enumerate(cell_conn):
cpids.SetId(j, pid)
self._data.InsertNextCell(ct, cpids)
elif "UnstructuredGrid" in inputtype:
self._data = inputobj
elif isinstance(inputobj, str):
from vedo.io import download, loadUnStructuredGrid
if "https://" in inputobj:
inputobj = download(inputobj, verbose=False)
self._data = loadUnStructuredGrid(inputobj)
self.filename = inputobj
else:
colors.printc("UGrid(): cannot understand input type:\n",
inputtype,
c='r')
return
# self._mapper = vtk.vtkDataSetMapper()
self._mapper = vtk.vtkPolyDataMapper()
self._mapper.SetInterpolateScalarsBeforeMapping(
settings.interpolateScalarsBeforeMapping)
if settings.usePolygonOffset:
self._mapper.SetResolveCoincidentTopologyToPolygonOffset()
pof, pou = settings.polygonOffsetFactor, settings.polygonOffsetUnits
self._mapper.SetResolveCoincidentTopologyPolygonOffsetParameters(
pof, pou)
self.GetProperty().SetInterpolationToFlat()
if not self._data:
return
# now fill the representation of the vtk unstr grid
sf = vtk.vtkShrinkFilter()
sf.SetInputData(self._data)
sf.SetShrinkFactor(1.0)
sf.Update()
gf = vtk.vtkGeometryFilter()
gf.SetInputData(sf.GetOutput())
gf.Update()
self._polydata = gf.GetOutput()
self._mapper.SetInputData(self._polydata)
sc = None
if self.useCells:
sc = self._polydata.GetCellData().GetScalars()
else:
sc = self._polydata.GetPointData().GetScalars()
if sc:
self._mapper.SetScalarRange(sc.GetRange())
self.SetMapper(self._mapper)
self.property = self.GetProperty()
def _inputsort(obj):
import dolfin
u = None
mesh = None
if not utils.isSequence(obj):
obj = [obj]
for ob in obj:
inputtype = str(type(ob))
# printc('inputtype is', inputtype, c=2)
if "vedo" in inputtype: # skip vtk objects, will be added later
continue
if "dolfin" in inputtype or "ufl" in inputtype:
if "MeshFunction" in inputtype:
mesh = ob.mesh()
if ob.dim() > 0:
printc('MeshFunction of dim>0 not supported.', c=1)
printc('Try e.g.: MeshFunction("size_t", mesh, 0)',
c=1,
italic=1)
printc('instead of MeshFunction("size_t", mesh, 1)',
c=1,
strike=1)
else:
#printc(ob.dim(), mesh.num_cells(), len(mesh.coordinates()), len(ob.array()))
V = dolfin.FunctionSpace(mesh, "CG", 1)
u = dolfin.Function(V)
v2d = dolfin.vertex_to_dof_map(V)
u.vector()[v2d] = ob.array()
elif "Function" in inputtype or "Expression" in inputtype:
u = ob
elif "ufl.mathfunctions" in inputtype: # not working
u = ob
elif "Mesh" in inputtype:
mesh = ob
elif "algebra" in inputtype:
mesh = ob.ufl_domain()
#print('algebra', ob.ufl_domain())
if "str" in inputtype:
mesh = dolfin.Mesh(ob)
if u and not mesh and hasattr(u, "function_space"):
V = u.function_space()
if V:
mesh = V.mesh()
if u and not mesh and hasattr(u, "mesh"):
mesh = u.mesh()
#printc('------------------------------------')
#printc('mesh.topology dim=', mesh.topology().dim())
#printc('mesh.geometry dim=', mesh.geometry().dim())
#if u: printc('u.value_rank()', u.value_rank())
#if u and u.value_rank(): printc('u.value_dimension()', u.value_dimension(0)) # axis=0
##if u: printc('u.value_shape()', u.value_shape())
return (mesh, u)
def MeshStreamLines(*inputobj, **options):
"""
Build streamplot.
"""
from vedo.base import streamLines
print('Building streamlines...')
tol = options.pop('tol', 0.02)
lw = options.pop('lw', 2)
direction = options.pop('direction', 'forward')
maxPropagation = options.pop('maxPropagation', None)
scalarRange = options.pop('scalarRange', None)
probes = options.pop('probes', None)
tubes = options.pop('tubes', dict()) # todo
maxRadiusFactor = options.pop('maxRadiusFactor', 1)
varyRadius = options.pop('varyRadius', 1)
mesh, u = _inputsort(inputobj)
if not mesh:
return None
u_values = _compute_uvalues(u, mesh)
if not utils.isSequence(u_values[0]):
printc("~times Error: cannot show Arrows for 1D scalar values!", c=1)
raise RuntimeError()
if u_values.shape[1] == 2: # u_values is 2D
u_values = np.insert(u_values, 2, 0, axis=1) # make it 3d
meshact = MeshActor(u)
meshact.addPointArray(u_values, 'u_values')
if utils.isSequence(probes):
pass # it's already it
elif tol:
print('decimating mesh points to use them as seeds...')
probes = meshact.clone().clean(tol).points()
else:
probes = meshact.points()
if len(probes) > 500:
printc('Probing domain with n =', len(probes), 'points')
printc(' ..this may take time (or choose a larger tol value)')
if lw:
tubes = dict()
else:
tubes['varyRadius'] = varyRadius
tubes['maxRadiusFactor'] = maxRadiusFactor
str_lns = streamLines(meshact,
probes,
direction=direction,
maxPropagation=maxPropagation,
tubes=tubes,
scalarRange=scalarRange,
activeVectors='u_values')
if lw:
str_lns.lw(lw)
return str_lns
def printc(*strings, **keys):
"""
Print to terminal in color (any color!).
:param c: foreground color name or (r,g,b)
:param bc: background color name or (r,g,b)
:param bool bold: boldface [True]
:param bool italic: italic [False]
:param bool blink: blinking text [False]
:param bool underline: underline text [False]
:param bool strike: strike through text [False]
:param bool dim: make text look dimmer [False]
:param bool invert: invert background and forward colors [False]
:param box: print a box with specified text character ['']
:param bool flush: flush buffer after printing [True]
:param str end: the end character to be printed [newline]
:param bool debug: print debug information about the evironment
:Example:
.. code-block:: python
from vedo.colors import printc
printc('anything', c='tomato', bold=False, end='' )
printc('anything', 455.5, vtkObject, c='lightblue')
printc(299792.48, c=4)
.. hint:: |colorprint.py|_
|colorprint|
"""
end = keys.pop("end", "\n")
flush = keys.pop("flush", True)
if not settings.enablePrintColor:
print(*strings, end=end)
if flush:
sys.stdout.flush()
return
if not settings.notebookBackend:
if not _terminal_has_colors:
print(*strings, end=end)
if flush:
sys.stdout.flush()
return
c = keys.pop("c", None)
bc = keys.pop("bc", None)
bold = keys.pop("bold", True)
italic = keys.pop("italic", False)
blink = keys.pop("blink", False)
underline = keys.pop("underline", False)
strike = keys.pop("strike", False)
dim = keys.pop("dim", False)
invert = keys.pop("invert", False)
box = keys.pop("box", "")
dbg = keys.pop("debug", False)
if c is True:
c = "green"
elif c is False:
c = "red"
if box is True:
box = '-'
if c is not None:
c = getColor(c)
if bc is not None:
bc = getColor(bc)
try: # -------------------------------------------------------------
txt = str()
ns = len(strings) - 1
separator = " "
offset = 0
for i, s in enumerate(strings):
if i == ns:
separator = ""
if "\\" in repr(s): # "in" for some reasons changes s
from vedo.shapes import _reps
for k in emoji.keys():
if k in str(s):
s = s.replace(k, emoji[k])
offset += 1
for k, rp in _reps: # check symbols in shapes._reps
if k in str(s):
s = s.replace(k, rp)
offset += 1
txt += str(s) + separator
special, cseq = "", ""
if c is not None:
r, g, b = c
cseq += "\x1b[38;2;" + str(int(r * 255)) + ";" + str(int(
g * 255)) + ";" + str(int(b * 255)) + "m"
if bc:
r, g, b = bc
cseq += "\x1b[48;2;" + str(int(r * 255)) + ";" + str(int(
g * 255)) + ";" + str(int(b * 255)) + "m"
if underline and not box:
special += "\x1b[4m"
if strike and not box:
special += "\x1b[9m"
if dim:
special += "\x1b[2m"
if invert:
special += "\x1b[7m"
if bold:
special += "\x1b[1m"
if italic:
special += "\x1b[3m"
if blink:
special += "\x1b[5m"
if box and not ("\n" in txt):
if len(box) > 1:
box = box[0]
if box in ["_", "=", "-", "+", "~"]:
boxv = "|"
else:
boxv = box
if box == "_" or box == ".":
outtxt = special + cseq + " " + box * (len(txt) + offset +
2) + " \n"
outtxt += boxv + " " * (len(txt) + 2) + boxv + "\n"
else:
outtxt = special + cseq + box * (len(txt) + offset + 4) + "\n"
outtxt += boxv + " " + txt + " " + boxv + "\n"
if box == "_":
outtxt += "|" + box * (len(txt) + offset +
2) + "|" + "\x1b[0m" + end
else:
outtxt += box * (len(txt) + offset + 4) + "\x1b[0m" + end
sys.stdout.write(outtxt)
else:
out = special + cseq + txt + "\x1b[0m"
if dbg:
from inspect import currentframe, getframeinfo
from vedo.utils import isSequence, precision
cf = currentframe().f_back
cfi = getframeinfo(cf)
fname = os.path.basename(getframeinfo(cf).filename)
print("\x1b[7m\x1b[3m\x1b[37m" + fname + " line:\x1b[1m" +
str(cfi.lineno) + "\x1b[0m",
end='')
print('\x1b[3m\x1b[37m\x1b[2m', "\U00002501" * 30,
time.ctime(), "\x1b[0m")
if txt: print(" \x1b[37m\x1b[1mMessage : " + out)
print(" \x1b[37m\x1b[1mFunction:\x1b[0m\x1b[37m " +
str(cfi.function))
print(' \x1b[1mLocals :\x1b[0m')
for loc in cf.f_locals.keys():
obj = cf.f_locals[loc]
var = repr(obj)
if 'module ' in var: continue
if 'function ' in var: continue
if 'class ' in var: continue
if '_' in loc: continue
if hasattr(obj, 'name'):
if not obj.name:
oname = str(type(obj))
else:
oname = obj.name
var = oname + ', at ' + precision(obj.GetPosition(), 3)
print(' \x1b[37m', loc, '=',
var[:60].replace('\n', ''), '\x1b[0m')
if isSequence(obj) and len(obj) > 4:
print(
' \x1b[37m\x1b[2m\x1b[3m len:',
len(obj),
' min:',
precision(min(obj), 4),
' max:',
precision(max(obj), 4),
# ' mean:', np.mean(np.array(obj)),
'\x1b[0m')
print(" \x1b[1m\x1b[37mElapsed time:\x1b[0m\x1b[37m",
str(time.time() - _global_start_time)[:6], 's\x1b[0m')
else:
sys.stdout.write(out + end)
except: # -------------------------------------------------------------
print(*strings, end=end)
if flush:
sys.stdout.flush()
def __init__(
self,
inputobj=None,
c=('r', 'y', 'lg', 'lb', 'b'), #('b','lb','lg','y','r')
alpha=(0.5, 1),
alphaUnit=1,
mapper='tetra',
):
BaseGrid.__init__(self)
self.useArray = 0
inputtype = str(type(inputobj))
#printc('TetMesh inputtype', inputtype)
###################
if inputobj is None:
self._data = vtk.vtkUnstructuredGrid()
elif isinstance(inputobj, vtk.vtkUnstructuredGrid):
self._data = inputobj
elif isinstance(inputobj, vtk.vtkRectilinearGrid):
r2t = vtk.vtkRectilinearGridToTetrahedra()
r2t.SetInputData(inputobj)
r2t.RememberVoxelIdOn()
r2t.SetTetraPerCellTo6()
r2t.Update()
self._data = r2t.GetOutput()
elif isinstance(inputobj, vtk.vtkDataSet):
r2t = vtk.vtkDataSetTriangleFilter()
r2t.SetInputData(inputobj)
#r2t.TetrahedraOnlyOn()
r2t.Update()
self._data = r2t.GetOutput()
elif isinstance(inputobj, str):
from vedo.io import download, loadUnStructuredGrid
if "https://" in inputobj:
inputobj = download(inputobj, verbose=False)
ug = loadUnStructuredGrid(inputobj)
tt = vtk.vtkDataSetTriangleFilter()
tt.SetInputData(ug)
tt.SetTetrahedraOnly(True)
tt.Update()
self._data = tt.GetOutput()
elif utils.isSequence(inputobj):
# if "ndarray" not in inputtype:
# inputobj = np.array(inputobj)
self._data = self._buildtetugrid(inputobj[0], inputobj[1])
###################
if 'tetra' in mapper:
self._mapper = vtk.vtkProjectedTetrahedraMapper()
elif 'ray' in mapper:
self._mapper = vtk.vtkUnstructuredGridVolumeRayCastMapper()
elif 'zs' in mapper:
self._mapper = vtk.vtkUnstructuredGridVolumeZSweepMapper()
elif isinstance(mapper, vtk.vtkMapper):
self._mapper = mapper
else:
printc('Unknown mapper type', [mapper], c='r')
raise RuntimeError()
self._mapper.SetInputData(self._data)
self.SetMapper(self._mapper)
self.color(c).alpha(alpha)
if alphaUnit:
self.GetProperty().SetScalarOpacityUnitDistance(alphaUnit)
# remember stuff:
self._color = c
self._alpha = alpha
self._alphaUnit = alphaUnit
def __init__(self, inputobj=None):
vtk.vtkImageSlice.__init__(self)
Base3DProp.__init__(self)
BaseVolume.__init__(self)
self._mapper = vtk.vtkImageResliceMapper()
self._mapper.SliceFacesCameraOn()
self._mapper.SliceAtFocalPointOn()
self._mapper.SetAutoAdjustImageQuality(False)
self._mapper.BorderOff()
self.lut = None
self.property = vtk.vtkImageProperty()
self.property.SetInterpolationTypeToLinear()
self.SetProperty(self.property)
###################
if isinstance(inputobj, str):
if "https://" in inputobj:
from vedo.io import download
inputobj = download(inputobj, verbose=False) # fpath
elif os.path.isfile(inputobj):
pass
else:
inputobj = sorted(glob.glob(inputobj))
###################
inputtype = str(type(inputobj))
if inputobj is None:
img = vtk.vtkImageData()
if isinstance(inputobj, Volume):
img = inputobj.imagedata()
self.lut = utils.ctf2lut(inputobj)
elif utils.isSequence(inputobj):
if isinstance(inputobj[0], str): # scan sequence of BMP files
ima = vtk.vtkImageAppend()
ima.SetAppendAxis(2)
pb = utils.ProgressBar(0, len(inputobj))
for i in pb.range():
f = inputobj[i]
picr = vtk.vtkBMPReader()
picr.SetFileName(f)
picr.Update()
mgf = vtk.vtkImageMagnitude()
mgf.SetInputData(picr.GetOutput())
mgf.Update()
ima.AddInputData(mgf.GetOutput())
pb.print('loading...')
ima.Update()
img = ima.GetOutput()
else:
if "ndarray" not in inputtype:
inputobj = np.array(inputobj)
if len(inputobj.shape) == 1:
varr = utils.numpy2vtk(inputobj, dtype=float)
else:
if len(inputobj.shape) > 2:
inputobj = np.transpose(inputobj, axes=[2, 1, 0])
varr = utils.numpy2vtk(inputobj.ravel(order='F'),
dtype=float)
varr.SetName('input_scalars')
img = vtk.vtkImageData()
img.SetDimensions(inputobj.shape)
img.GetPointData().AddArray(varr)
img.GetPointData().SetActiveScalars(varr.GetName())
elif "ImageData" in inputtype:
img = inputobj
elif isinstance(inputobj, Volume):
img = inputobj.inputdata()
elif "UniformGrid" in inputtype:
img = inputobj
elif hasattr(
inputobj,
"GetOutput"): # passing vtk object, try extract imagdedata
if hasattr(inputobj, "Update"):
inputobj.Update()
img = inputobj.GetOutput()
elif isinstance(inputobj, str):
from vedo.io import loadImageData, download
if "https://" in inputobj:
inputobj = download(inputobj, verbose=False)
img = loadImageData(inputobj)
else:
colors.printc("VolumeSlice: cannot understand input type:\n",
inputtype,
c='r')
return
self._data = img
self._mapper.SetInputData(img)
self.SetMapper(self._mapper)