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r"""
Version for trame 1.x - https://github.com/Kitware/trame/blob/release-v1/examples/VTK/ContourGeometry/RemoteViewLocalRendering.py
Delta v1..v2 - https://github.com/Kitware/trame/commit/3852cba56cd63f6efa684d5e5fb00881a6111e81
Installation requirements:
pip install trame trame-vuetify trame-vtk
"""
from pathlib import Path
import vtkmodules.vtkRenderingOpenGL2 # noqa
from vtkmodules.vtkFiltersCore import vtkContourFilter
# VTK factory initialization
from vtkmodules.vtkInteractionStyle import vtkInteractorStyleSwitch # noqa
from vtkmodules.vtkIOXML import vtkXMLImageDataReader
from vtkmodules.vtkRenderingCore import (
vtkActor,
vtkPolyDataMapper,
vtkRenderer,
vtkRenderWindow,
vtkRenderWindowInteractor,
)
from trame.app import get_server
from trame.ui.vuetify import SinglePageLayout
from trame.widgets import vtk as vtk_widgets
from trame.widgets import vuetify
# -----------------------------------------------------------------------------
# Trame initialization
# -----------------------------------------------------------------------------
server = get_server(client_type="vue2")
state, ctrl = server.state, server.controller
state.trame__title = "VTK contour - Remote/Local rendering"
# -----------------------------------------------------------------------------
# VTK pipeline
# -----------------------------------------------------------------------------
data_directory = Path(__file__).parent.parent.with_name("data")
head_vti = data_directory / "head.vti"
reader = vtkXMLImageDataReader()
reader.SetFileName(head_vti)
reader.Update()
contour = vtkContourFilter()
contour.SetInputConnection(reader.GetOutputPort())
contour.SetComputeNormals(1)
contour.SetComputeScalars(0)
# Extract data range => Update store/state
data_range = reader.GetOutput().GetPointData().GetScalars().GetRange()
contour_value = 0.5 * (data_range[0] + data_range[1])
state.data_range = data_range
# Configure contour with valid values
contour.SetNumberOfContours(1)
contour.SetValue(0, contour_value)
# Rendering setup
renderer = vtkRenderer()
renderWindow = vtkRenderWindow()
renderWindow.AddRenderer(renderer)
renderWindowInteractor = vtkRenderWindowInteractor()
renderWindowInteractor.SetRenderWindow(renderWindow)
renderWindowInteractor.GetInteractorStyle().SetCurrentStyleToTrackballCamera()
mapper = vtkPolyDataMapper()
actor = vtkActor()
mapper.SetInputConnection(contour.GetOutputPort())
actor.SetMapper(mapper)
renderer.AddActor(actor)
renderer.ResetCamera()
renderWindow.Render()
# -----------------------------------------------------------------------------
# Callbacks
# -----------------------------------------------------------------------------
@state.change("contour_value", "interactive")
def update_contour(contour_value, interactive, force=False, **kwargs):
if interactive or force:
contour.SetValue(0, contour_value)
ctrl.view_update()
def commit_changes():
update_contour(
contour_value=state.contour_value,
interactive=state.interactive,
force=True,
)
# -----------------------------------------------------------------------------
# GUI
# -----------------------------------------------------------------------------
with SinglePageLayout(server) as layout:
layout.title.set_text("Contour Application - Remote rendering")
layout.icon.click = ctrl.view_reset_camera
with layout.toolbar:
vuetify.VSpacer()
vuetify.VSwitch(
v_model=("interactive", False),
hide_details=True,
label="Update while dragging",
)
vuetify.VSlider(
v_model=("contour_value", contour_value),
change=commit_changes,
min=("data_range[0]",),
max=("data_range[1]",),
hide_details=True,
dense=True,
style="max-width: 300px",
)
vuetify.VSwitch(
v_model="$vuetify.theme.dark",
hide_details=True,
)
with vuetify.VBtn(
icon=True,
click=ctrl.view_reset_camera,
):
vuetify.VIcon("mdi-crop-free")
with layout.content:
with vuetify.VContainer(
fluid=True,
classes="pa-0 fill-height",
):
view = vtk_widgets.VtkLocalView(renderWindow)
# view = vtk_widgets.VtkRemoteView(renderWindow)
ctrl.view_update = view.update
ctrl.view_reset_camera = view.reset_camera
ctrl.on_server_ready.add(view.update)
# -----------------------------------------------------------------------------
# Main
# -----------------------------------------------------------------------------
if __name__ == "__main__":
server.start()
|
