Show stl-File in Plotly Dash

Dash Python
1

Hello,

I want do display an stl file in plotly dash. Can anybody help me? I want to use the library dash_vtk.

Regards,

Suzan.

2

Hi @sfritzke welcome to the community.

I used meshio to convert the *.stl into *.vtk.

This is the quick and dirty app:

import dash
from dash import html
import vtk
import dash_vtk
from dash_vtk.utils import to_mesh_state

# set type of reader to be used. The meshio created vtk file requires the UnstructuredGridReader
reader = vtk.vtkUnstructuredGridReader()

# reade the file
reader.SetFileName('your_vtk_file.vtk')
reader.Update()
dataset = reader.GetOutput()

# Use helper to get a mesh structure that can be passed as-is to a Mesh
mesh_state = to_mesh_state(dataset)

content = dash_vtk.View(
    background=[0.0, 0.0, 0.0],
    triggerRender=1.,
    children=[
        dash_vtk.GeometryRepresentation(
            showCubeAxes=True,
            # cubeAxesStyle={
            #     "height": 2000,
            #     "startingHeight": 10,
            #     "width": 2000,
            #     },
            property={
                "edgeVisibility": False,
                #"VertexVisibility": True,
                "EdgeColor": [0.0, 0.0, 0.0],
                #"VertexColor": [1.0, 1.0, 1.0],
                "Color": [0.6, 0.0, 1.0],
                "Opacity": 1.0,
                },
            children=[
                dash_vtk.Mesh(state=mesh_state)
            ]
        )
    ]
)

# initiate app
app = dash.Dash(__name__)

app.layout = html.Div(
    children=[content],
)

if __name__ == "__main__":
    app.run(debug=True)