Python vtk.vtkLineSource() Examples

The following are 3 code examples of vtk.vtkLineSource(). 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: geometric_objects.py    From pyvista with MIT License 5 votes vote down vote up 
def Line(pointa=(-0.5, 0., 0.), pointb=(0.5, 0., 0.), resolution=1):
    """Create a line.

    Parameters
    ----------
    pointa : np.ndarray or list
        Location in [x, y, z].

    pointb : np.ndarray or list
        Location in [x, y, z].

    resolution : int
        number of pieces to divide line into

    """
    if resolution <= 0:
        raise ValueError('Resolution must be positive')
    if np.array(pointa).size != 3:
        raise TypeError('Point A must be a length three tuple of floats.')
    if np.array(pointb).size != 3:
        raise TypeError('Point B must be a length three tuple of floats.')
    src = vtk.vtkLineSource()
    src.SetPoint1(*pointa)
    src.SetPoint2(*pointb)
    src.SetResolution(resolution)
    src.Update()
    line = pyvista.wrap(src.GetOutput())
    # Compute distance of every point along line
    compute = lambda p0, p1: np.sqrt(np.sum((p1 - p0)**2, axis=1))
    distance = compute(np.array(pointa), line.points)
    line['Distance'] = distance
    return line
Example #2
Source File: pointobject.py    From Det3D with Apache License 2.0 5 votes vote down vote up 
def CreateLine(self, p1, p2):
        "Create a 3D line from p1=[x1,y1,z1] to p2=[x2,y2,z2]"
        line = vtk.vtkLineSource()
        line.SetPoint1(*p1)
        line.SetPoint2(*p2)
        line.Update()

        self.pd = vtk.vtkPolyData()
        self.pd.DeepCopy(line.GetOutput())
        self.scalars = None
        self.SetupPipelineMesh()
Example #3
Source File: Visualization.py    From PyNite with MIT License 4 votes vote down vote up 
def __init__(self, member, nodes, text_height=5):

    # Generate a line for the member
    line = vtk.vtkLineSource()

    # Step through each node in the model and find the position of the i-node and j-node
    for node in nodes:

      # Check to see if the current node is the i-node
      if node.Name == member.iNode.Name:
        Xi = node.X
        Yi = node.Y
        Zi = node.Z
        line.SetPoint1(Xi, Yi, Zi)

      # Check to see if the current node is the j-node
      elif node.Name == member.jNode.Name:
        Xj = node.X
        Yj = node.Y
        Zj = node.Z
        line.SetPoint2(Xj, Yj, Zj)
    
    # Set up a mapper for the member
    mapper = vtk.vtkPolyDataMapper()
    mapper.SetInputConnection(line.GetOutputPort())

    # Set up an actor for the member
    self.actor = vtk.vtkActor()
    self.actor.SetMapper(mapper)

    # Create the text for the member label
    label = vtk.vtkVectorText()
    label.SetText(member.Name)

    # Set up a mapper for the member label
    lblMapper = vtk.vtkPolyDataMapper()
    lblMapper.SetInputConnection(label.GetOutputPort())

    # Set up an actor for the member label
    self.lblActor = vtk.vtkFollower()
    self.lblActor.SetMapper(lblMapper)
    self.lblActor.SetScale(text_height, text_height, text_height)
    self.lblActor.SetPosition((Xi+Xj)/2, (Yi+Yj)/2, (Zi+Zj)/2)

#%%
# Converts a plate object into a plate for the viewer