first commit

.gitignore

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+__pycache__
+engine/__pycache__
+routes/__pycache__
+.vscode
+venv

app.py

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+"""A Python Flask App for DanaXA Test By Shahab Rahnama"""
+
+import argparse
+import os
+from flask import Flask
+from flask_cors import CORS
+from routes import request_api
+
+
+APP = Flask(__name__)
+
+UPLOAD_FOLDER = 'static/uploads/'
+
+APP.secret_key = "secret key"
+APP.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
+APP.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024
+
+
+
+APP.register_blueprint(request_api.get_blueprint())
+
+if __name__ == '__main__':
+
+    PARSER = argparse.ArgumentParser(description="Python Flask Danaxa Test By Shahab Rahnama")
+
+    PARSER.add_argument('--debug', 
+                        action='store_true',
+                        help="Use flask debug/dev mode with file change reloading")
+    ARGS = PARSER.parse_args()
+
+    PORT = int(os.environ.get('PORT', 5000))
+
+    if ARGS.debug:
+        print("Running in debug mode")
+        CORS = CORS(APP)
+        APP.run(host='0.0.0.0', port=PORT, debug=True)
+    else:
+        APP.run(host='0.0.0.0', port=PORT, debug=False)

engine/spline.py

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+from distutils.command.upload import upload
+import numpy as np
+from scipy import interpolate
+import matplotlib.pyplot as plt
+import matplotlib as mpl
+from PIL import Image
+import os
+
+
+# def spline(image_name, 
+#            t=[0.,   0. ,  0.,  0.,   0.25, 0.5,  0.75, 1.,   1.,   1.,   1.  ],
+#            ctr=[(839 , 216), (588, 205), (427, 8), (304, 159),(265, 100), (203, 175),(0,135)],
+#            k=3):
+def spline(image_name, t, ctr, k):
+    # ctr =np.array( [(839 , 216), (588, 205), (427, 8), (304, 159),(265, 100), (203, 175),(0,135)])
+    ctr = np.array(ctr)
+    x=ctr[:,0]
+    y=ctr[:,1]
+    im = Image.open(os.getcwd()+ "/static/uploads/"+image_name)
+    print(os.getcwd())
+    # uncomment both lines for a closed curve
+    #x=np.append(x,[x[0]])  
+    #y=np.append(y,[y[0]])
+
+    l=len(x)  
+
+    # t=np.linspace(0,1,l-2,endpoint=True)
+    # t=np.append([0,0,0],t)
+    # t=np.append(t,[1,1,1])
+    # print(t)
+    # [0.   0.   0.   0.   0.25 0.5  0.75 1.   1.   1.   1.  ]
+    tck=[t,[x,y],k]
+    u3=np.linspace(0,1,(max(l*2,70)),endpoint=True)
+    out = interpolate.splev(u3,tck)
+
+    dpi = mpl.rcParams['figure.dpi']
+    height = im.height
+    width = im.width
+
+
+    # What size does the figure need to be in inches to fit the image?
+    figsize = width / float(dpi), height / float(dpi)
+
+    fig, ax = plt.subplots(figsize=figsize)
+    im = ax.imshow(im)
+    # plt.imshow(im)
+    ax.plot(x,y,'k--',label='Control polygon',marker='o',markerfacecolor='yellow')
+    #plt.plot(x,y,'ro',label='Control points only')
+    ax.plot(out[0],out[1],'r',linewidth=2.0,label='B-spline curve')
+    # ax.legend(loc='best')
+    # plt.axis([min(x)-1, max(x)+1, min(y)-1, max(y)+1])
+    # plt.title('Cubic B-spline curve evaluation')
+    plt.axis('off')
+    plt.savefig('static/uploads/'+image_name, bbox_inches='tight', pad_inches=0) 
+    # plt.show()
+
+
+
+# if __name__ == "__main__":
+#     spline()

readme.md

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+## A Python Flask App for DanaXA Test By Shahab Rahnama
+
+### Setup
+`Python3 app.py`
+

requirements.txt

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+astroid==2.9.3
+click==8.0.3
+cycler==0.11.0
+Flask==2.0.2
+Flask-Cors==3.0.10
+flask-swagger-ui==3.36.0
+fonttools==4.29.0
+isort==5.10.1
+itsdangerous==2.0.1
+Jinja2==3.0.3
+kiwisolver==1.3.2
+lazy-object-proxy==1.7.1
+MarkupSafe==2.0.1
+matplotlib==3.5.1
+mccabe==0.6.1
+numpy==1.22.1
+packaging==21.3
+Pillow==9.0.0
+platformdirs==2.4.1
+pylint==2.12.2
+pyparsing==3.0.7
+python-dateutil==2.8.2
+scipy==1.7.3
+six==1.16.0
+toml==0.10.2
+typing-extensions==4.0.1
+Werkzeug==2.0.2
+wrapt==1.13.3

routes/request_api.py

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+"""The Endpoints to manage the DanaXA test"""
+import uuid
+from flask import Blueprint, flash, request, redirect, url_for, render_template
+import ast
+import os
+from werkzeug.utils import secure_filename
+from engine.spline import spline
+
+
+REQUEST_API = Blueprint('request_api', __name__)
+
+
+ALLOWED_EXTENSIONS = set(['png', 'jpg', 'jpeg', 'gif'])
+UPLOAD_FOLDER = 'static/uploads/'
+
+def get_blueprint():
+    """Return the blueprint for the main app module"""
+    return REQUEST_API
+
+
+def allowed_file(filename):
+    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS
+
+
+@REQUEST_API.route('/')
+def home():
+    return render_template('index.html')
+
+@REQUEST_API.route('/', methods=['POST'])
+def upload_image():
+    req = request.form.to_dict()
+    # print(req['cparam'])
+    if 'file' not in request.files:
+        flash('No file part')
+        return redirect(request.url)
+    file = request.files['file']
+    if file.filename == '':
+        flash('No image selected for uploading')
+        return redirect(request.url)
+    if file and allowed_file(file.filename):
+        filename = secure_filename(file.filename)
+        file.save(os.path.join(UPLOAD_FOLDER, filename))
+        spline(filename,ast.literal_eval(req['tparam']),ast.literal_eval(req['cparam']), int(req['kparam']))
+
+        #print('upload_image filename: ' + filename)
+        flash('Image successfully uploaded and displayed below')
+        return render_template('index.html', filename=filename)
+    else:
+        flash('Allowed image types are - png, jpg, jpeg, gif')
+        return redirect(request.url)
+
+@REQUEST_API.route('/display/<filename>')
+def display_image(filename):
+    #print('display_image filename: ' + filename)
+    return redirect(url_for('static', filename='uploads/' + filename), code=301)
+
+

templates/index.html

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+//templates/index.html
+<html>
+<head>
+<title>Python Flask Danaxa test By Shahab Rahnama</title>
+<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />        
+<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
+</head>
+<body>
+<p><h1 align="center">Python Flask Danaxa Test By Shahab Rahnama</h1></p>
+<div class="container">
+<div class="row">
+    <h2>Please Complete Form Precisely</h2>
+    <p>
+        {% with messages = get_flashed_messages() %}
+          {% if messages %}
+            <ul>
+            {% for message in messages %}
+              <li>{{ message }}</li>
+            {% endfor %}
+            </ul>
+          {% endif %}
+        {% endwith %}
+    </p>
+    {% if filename %}
+        <div>
+            <img src="{{ url_for('request_api.display_image', filename=filename) }}">
+        </div>
+    {% endif %}
+    <form method="post" action="/" enctype="multipart/form-data">
+        <dl>
+            <p>
+                <input type="text"  placeholder="t = [0.,   0. ,  0.,  0.,   0.25, 0.5,  0.75, 1.,   1.,   1.,   1.  ]" name="tparam" class="form-control" autocomplete="off" required>
+            </p>
+             <p>
+                <input type="text" placeholder="ctr = [(839 , 216), (588, 205), (427, 8), (304, 159),(265, 100), (203, 175),(0,135)]" name="cparam" class="form-control" autocomplete="off" required>
+            </p>
+            <p>
+                <input type="text" placeholder="k = 3" name="kparam" class="form-control" autocomplete="off" required>
+            </p>
+        </dl>
+        <dl>
+            <p>
+                <input type="file" name="file" class="form-control" autocomplete="off" required>
+            </p>
+        </dl>
+        <p>
+            <input type="submit" value="Submit" class="btn btn-info">
+        </p>
+    </form>
+</div>
+</div>
+</body>
+</html>