Python to_volume_state Examples

Example #1

from dash_vtk.utils import to_volume_state

try:
    # VTK 9+
    from vtkmodules.vtkImagingCore import vtkRTAnalyticSource
except:
    # Old VTK
    from vtk.vtkImagingCore import vtkRTAnalyticSource

# Use VTK to get some data
data_source = vtkRTAnalyticSource()
data_source.Update()  # <= Execute source to produce an output
dataset = data_source.GetOutput()

# Use helper to get a volume structure that can be passed as-is to a Volume
volume_state = to_volume_state(dataset)  # No need to select field

content = dash_vtk.View([
    dash_vtk.VolumeRepresentation([
        # GUI to control Volume Rendering
        # + Setup good default at startup
        dash_vtk.VolumeController(),
        # Actual volume
        dash_vtk.ShareDataSet([
            dash_vtk.Volume(state=volume_state),
        ]),
    ]),
    dash_vtk.SliceRepresentation(iSlice=10,
                                 children=[
                                     dash_vtk.ShareDataSet(),
                                 ]),

Example #2

File: app.py Project: ziepakker/dash-sample-apps

import dash_vtk
from dash_vtk.utils import to_volume_state

import vtk

# Data file path
demo_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
head_vti = os.path.join(demo_dir, "data", "head.vti")

# Load dataset from dist
reader = vtk.vtkXMLImageDataReader()
reader.SetFileName(head_vti)
reader.Update()

volume_state = to_volume_state(reader.GetOutput())

vtk_view = dash_vtk.View(
    dash_vtk.VolumeRepresentation(children=[
        dash_vtk.VolumeController(),
        dash_vtk.Volume(state=volume_state),
    ]))

app = dash.Dash(__name__)
server = app.server

app.layout = html.Div(
    style={
        "height": "calc(100vh - 16px)",
        "width": "100%"
    },

Example #3

File: app.py Project: ziepakker/dash-sample-apps

def dcm_to_volume(dir_path):
    itk_image = itk.imread(dir_path)
    vtk_image = itk.vtk_image_from_image(itk_image)
    volume_state = to_volume_state(vtk_image)

    return volume_state

Example #4

import os

import dash
import dash_html_components as html
import itk

import dash_vtk
from dash_vtk.utils import to_volume_state

# Place a DICOM series (a set of per-file slices) in a directory. ITK sorts, sets spatial metadata, etc.
demo_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
itk_image = itk.imread(os.path.join(demo_dir, "data", "ct_lung"))

# Convert itk.Image to vtkImageData
vtk_image = itk.vtk_image_from_image(itk_image)
volume_state = to_volume_state(vtk_image)


vtk_view = dash_vtk.View(
    dash_vtk.VolumeRepresentation(
        children=[dash_vtk.VolumeController(), dash_vtk.Volume(state=volume_state),]
    )
)

app = dash.Dash(__name__)
server = app.server

app.layout = html.Div(
    style={"height": "calc(100vh - 50px)", "width": "100%"},
    children=[html.Div(vtk_view, style={"height": "100%", "width": "100%"})],
)