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r"""
Installation requirements:
pip install trame trame-vuetify trame-vtk
"""
from pathlib import Path
import paraview.web.venv
from paraview import simple
from trame.app import get_server
from trame.ui.vuetify import SinglePageLayout
from trame.widgets import paraview, vuetify
# -----------------------------------------------------------------------------
# Trame setup
# -----------------------------------------------------------------------------
server = get_server(client_type="vue2")
state, ctrl = server.state, server.controller
# -----------------------------------------------------------------------------
# ParaView pipeline
# -----------------------------------------------------------------------------
simple.LoadDistributedPlugin("AcceleratedAlgorithms", remote=False, ns=globals())
data_directory = Path(__file__).parent.parent.parent.with_name("data")
head_vti = data_directory / "head.vti"
reader = simple.XMLImageDataReader(FileName=[str(head_vti)])
# contour = simple.Contour(Input=reader) # Default filter => no plugin but slow
contour = simple.FlyingEdges3D(Input=reader) # Faster processing => make it interactive
# Extract data range => Update store/state
array = reader.GetPointDataInformation().GetArray(0)
data_name = array.GetName()
data_range = array.GetRange()
contour_value = 0.5 * (data_range[0] + data_range[1])
state.data_range = data_range
state.contour_value = contour_value
contour.ContourBy = ["POINTS", data_name]
contour.Isosurfaces = [contour_value]
contour.ComputeNormals = 1
contour.ComputeScalars = 0
# Rendering setup
view = simple.GetRenderView()
view.OrientationAxesVisibility = 0
representation = simple.Show(contour, view)
view = simple.Render()
simple.ResetCamera()
view.CenterOfRotation = view.CameraFocalPoint
# -----------------------------------------------------------------------------
# Callbacks
# -----------------------------------------------------------------------------
@state.change("contour_value", "interactive")
def update_contour(contour_value, interactive, force=False, **kwargs):
if interactive or force:
contour.Isosurfaces = [contour_value]
html_view.update()
def commit_changes():
update_contour(
contour_value=state.contour_value,
interactive=state.contour_value,
force=True,
)
# -----------------------------------------------------------------------------
# GUI
# -----------------------------------------------------------------------------
state.trame__title = "ParaView contour - Remote rendering"
ctrl.on_server_ready.add(ctrl.view_update)
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="$vuetify.theme.dark",
hide_details=True,
)
with vuetify.VBtn(icon=True, click="$refs.view.resetCamera()"):
vuetify.VIcon("mdi-crop-free")
vuetify.VProgressLinear(
indeterminate=True,
absolute=True,
bottom=True,
active=("trame__busy",),
)
with layout.content:
with vuetify.VContainer(fluid=True, classes="pa-0 fill-height"):
html_view = paraview.VtkRemoteView(view)
ctrl.view_update = html_view.update
ctrl.view_reset_camera = html_view.reset_camera
# -----------------------------------------------------------------------------
# Main
# -----------------------------------------------------------------------------
if __name__ == "__main__":
server.start()
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