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import os
import streamlit as st
import tempfile
import trimesh
import pymeshlab
import cadquery as cq
from pathlib import Path
import subprocess
# Ensure FreeCAD is in the system path
os.environ["PATH"] += r";C:\Program Files\FreeCAD 0.21\bin"
# Set title
st.title("3D Model Converter")
# Supported formats
input_formats = ["obj", "stl", "ply", "glb", "gltf", "off", "3ds", "fbx", "dae", "stp", "skp"]
output_formats = ["obj", "stl", "ply", "glb", "gltf", "off", "3ds", "fbx", "dae"]
# Upload file
uploaded_file = st.file_uploader("Upload a 3D model file", type=input_formats)
if uploaded_file:
file_ext = uploaded_file.name.split(".")[-1].lower()
# Select output format
output_format = st.selectbox("Select output format", [fmt for fmt in output_formats if fmt != file_ext])
# Process and convert
if st.button("Convert"):
with tempfile.TemporaryDirectory() as temp_dir:
input_path = os.path.join(temp_dir, uploaded_file.name)
output_path = os.path.join(temp_dir, f"converted.{output_format}")
# Save uploaded file
with open(input_path, "wb") as f:
f.write(uploaded_file.read())
try:
if file_ext == "stp":
temp_stl_path = os.path.join(temp_dir, "temp.stl") # Temporary STL file
# Convert STEP to STL using FreeCAD
freecad_script = f"""
import FreeCAD
import Part
import Mesh
doc = FreeCAD.newDocument()
shape = Part.Shape()
shape.read("{input_path}")
Mesh.export([shape], "{temp_stl_path}")
"""
script_path = os.path.join(temp_dir, "convert_stp.py")
with open(script_path, "w") as f:
f.write(freecad_script)
subprocess.run(["freecadcmd", script_path], check=True)
if output_format == "stl":
output_path = temp_stl_path
else:
mesh = trimesh.load(temp_stl_path) # Convert STL to other formats
mesh.export(output_path)
elif file_ext in ["obj", "stl", "ply", "off"]:
mesh = trimesh.load(input_path)
mesh.export(output_path)
else:
ms = pymeshlab.MeshSet()
ms.load_new_mesh(input_path)
ms.save_current_mesh(output_path, binary=True)
# Provide download link
with open(output_path, "rb") as f:
st.download_button(label="Download Converted File", data=f, file_name=f"converted.{output_format}")
except Exception as e:
st.error(f"Conversion failed: {e}") # Show error if conversion fails
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