Python vtk.vtkPolyDataNormals() Examples

The following are 3 code examples of vtk.vtkPolyDataNormals(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module vtk , or try the search function .
Example #1
Source File: base.py    From BrainSpace with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def load_conte69(as_sphere=False, with_normals=True, join=False):
    """ Load conte69 surfaces.

    Parameters
    ----------
    as_sphere : bool, optional
        Return spheres instead of cortical surfaces. Default is False.
    with_normals : bool, optional
        Whether to compute surface normals. Default is True.
    join : bool, optional
        If False, return one surface for left and right hemispheres. Otherwise,
        return a single surface as a combination of both left and right
        surfaces. Default is False.

    Returns
    -------
    surf : tuple of BSPolyData or BSPolyData
        Surfaces for left and right hemispheres. If ``join == True``, one
        surface with both hemispheres.
    """

    root_pth = os.path.dirname(__file__)
    if as_sphere:
        fname = 'conte69_32k_{}_sphere.gii'
    else:
        fname = 'conte69_32k_{}.gii'

    ipth = os.path.join(root_pth, 'surfaces', fname)
    surfs = [None] * 2
    for i, side in enumerate(['lh', 'rh']):
        surfs[i] = read_surface(ipth.format(side))
        if with_normals:
            nf = wrap_vtk(vtkPolyDataNormals, splitting=False,
                          featureAngle=0.1)
            surfs[i] = serial_connect(surfs[i], nf)

    if join:
        return combine_surfaces(*surfs)
    return surfs[0], surfs[1]
Example #2
Source File: base.py    From BrainSpace with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
def load_fsa5(with_normals=True, join=False):
    """ Load fsaverage5 surfaces.

    Parameters
    ----------
    with_normals : bool, optional
        Whether to compute surface normals. Default is True.
    join : bool, optional
        If False, return one surface for left and right hemispheres. Otherwise,
        return a single surface as a combination of both left and right
        surfaces. Default is False.

    Returns
    -------
    surf : tuple of BSPolyData or BSPolyData
        Surfaces for left and right hemispheres. If ``join == True``, one
        surface with both hemispheres.
    """

    root_pth = os.path.dirname(__file__)
    fname = 'fsa5.pial.{}.gii'

    ipth = os.path.join(root_pth, 'surfaces', fname)
    surfs = [None] * 2
    for i, side in enumerate(['lh', 'rh']):
        surfs[i] = read_surface(ipth.format(side))
        if with_normals:
            nf = wrap_vtk(vtkPolyDataNormals, splitting=False,
                          featureAngle=0.1)
            surfs[i] = serial_connect(surfs[i], nf)

    if join:
        return combine_surfaces(*surfs)
    return surfs[0], surfs[1]
Example #3
Source File: vtkUtils.py    From 3d-nii-visualizer with MIT License 5 votes vote down vote up 
def create_normals(smoother):
    """
    The filter can reorder polygons to insure consistent orientation across polygon neighbors. Sharp edges can be split
    and points duplicated with separate normals to give crisp (rendered) surface definition.
    (https://www.vtk.org/doc/nightly/html/classvtkPolyDataNormals.html)
    :param smoother:
    :return:
    """
    brain_normals = vtk.vtkPolyDataNormals()
    brain_normals.SetInputConnection(smoother.GetOutputPort())
    brain_normals.SetFeatureAngle(60.0)  #
    return brain_normals