Create app.py
Browse files
app.py
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import os
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import numpy as np
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from PIL import Image
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from stl import mesh
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import plotly.graph_objects as go
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from flask import Flask, render_template_string, request, send_file
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from werkzeug.utils import secure_filename
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app = Flask(__name__)
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UPLOAD_FOLDER = 'uploads'
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OUTPUT_FOLDER = 'outputs'
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os.makedirs(UPLOAD_FOLDER, exist_ok=True)
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os.makedirs(OUTPUT_FOLDER, exist_ok=True)
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app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
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app.config['OUTPUT_FOLDER'] = OUTPUT_FOLDER
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HTML_TEMPLATE = """
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<title>3D Model Generator for 3D Printing</title>
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</head>
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<body>
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<h1>Upload Image to Generate 3D Printable Model</h1>
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<form action="/upload" method="post" enctype="multipart/form-data">
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<label>Image:</label><input type="file" name="image" required><br><br>
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<input type="submit" value="Upload & Generate 3D Model">
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</form>
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{% if plot_div %}
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<h2>3D Model Preview:</h2>
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{{ plot_div|safe }}
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<br>
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<a href="{{ download_link }}" download>Download STL File</a>
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{% endif %}
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</body>
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</html>
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"""
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def generate_3d_model(image_path, output_stl_path, scale=1.0, height_scale=5.0):
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image = Image.open(image_path).convert('L')
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img_array = np.array(image)
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height, width = img_array.shape
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x, y = np.meshgrid(np.linspace(0, width * scale, width), np.linspace(0, height * scale, height))
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z = (img_array / 255.0) * height_scale
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# Create vertices and faces
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vertices = np.column_stack((x.flatten(), y.flatten(), z.flatten()))
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faces = []
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for i in range(height - 1):
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for j in range(width - 1):
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idx = i * width + j
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faces.append([idx, idx + 1, idx + width])
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faces.append([idx + 1, idx + width + 1, idx + width])
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# Create STL mesh
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model_mesh = mesh.Mesh(np.zeros(len(faces), dtype=mesh.Mesh.dtype))
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for i, f in enumerate(faces):
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for j in range(3):
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model_mesh.vectors[i][j] = vertices[f[j], :]
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model_mesh.save(output_stl_path)
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fig = go.Figure(data=[go.Surface(z=z, x=x, y=y, colorscale='Gray')])
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fig.update_layout(scene=dict(aspectratio=dict(x=1, y=1, z=0.3)), margin=dict(l=0, r=0, b=0, t=0))
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return fig.to_html(full_html=False)
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@app.route('/', methods=['GET'])
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def index():
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return render_template_string(HTML_TEMPLATE, plot_div=None, download_link=None)
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@app.route('/upload', methods=['POST'])
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def upload():
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image = request.files['image']
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image_path = os.path.join(app.config['UPLOAD_FOLDER'], secure_filename(image.filename))
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image.save(image_path)
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stl_filename = os.path.splitext(image.filename)[0] + '.stl'
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output_stl_path = os.path.join(app.config['OUTPUT_FOLDER'], stl_filename)
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plot_div = generate_3d_model(image_path, output_stl_path)
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download_link = f"/download/{stl_filename}"
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return render_template_string(HTML_TEMPLATE, plot_div=plot_div, download_link=download_link)
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@app.route('/download/<filename>')
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def download_file(filename):
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return send_file(os.path.join(app.config['OUTPUT_FOLDER'], filename), as_attachment=True)
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if __name__ == '__main__':
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app.run(debug=True)
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