Create app.py

app.py

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+import streamlit as st
+from stl import mesh
+from mpl_toolkits import mplot3d
+import matplotlib.pyplot as plt
+import tempfile
+import os
+
+# Page configuration
+st.set_page_config(page_title="AR CAD Viewer", layout="wide")
+
+# Title
+st.title("Augmented Reality CAD Viewer")
+st.write("Upload your CAD models and view them in a 3D interactive environment.")
+
+# File uploader for CAD files
+uploaded_file = st.file_uploader("Upload a CAD file (.stl format)", type=["stl"])
+
+if uploaded_file is not None:
+    # Save uploaded file to a temporary location
+    with tempfile.NamedTemporaryFile(delete=False, suffix=".stl") as temp_file:
+        temp_file.write(uploaded_file.read())
+        temp_filepath = temp_file.name
+    
+    # Load the STL file
+    stl_mesh = mesh.Mesh.from_file(temp_filepath)
+    
+    # Create a new figure for plotting
+    fig = plt.figure(figsize=(10, 10))
+    ax = fig.add_subplot(111, projection="3d")
+    
+    # Plot the CAD model
+    ax.add_collection3d(mplot3d.art3d.Poly3DCollection(stl_mesh.vectors, alpha=0.7, color="cyan"))
+    ax.auto_scale_xyz(stl_mesh.points.flatten(), stl_mesh.points.flatten(), stl_mesh.points.flatten())
+    
+    # Display the 3D plot in Streamlit
+    st.pyplot(fig)
+    
+    # Clean up the temporary file
+    os.remove(temp_filepath)
+
+# AR.js link
+st.markdown(
+    """
+    ## AR Feature
+    Use [AR.js](https://ar-js-org.github.io/AR.js/) to host your model online for AR visualization.
+    Upload this model to a compatible AR hosting service or modify the file to be AR.js-ready.
+    """
+)