65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
import tornado.websocket
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import tornado.web
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import tornado.ioloop
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import os
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from PIL import Image
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import numpy as np
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from blend_modes import blend_modes
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from io import BytesIO
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web_dir = os.path.join(os.path.split(__file__)[0], 'www')
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output_dir = os.path.join(os.path.split(__file__)[0], 'output')
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# This is our WebSocketHandler - it handles the messages
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# from the tornado server
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class WebSocketHandler(tornado.websocket.WebSocketHandler):
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connections = set()
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# the client connected
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def open(self):
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self.connections.add(self)
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print ("New client connected")
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# the client sent the message
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def on_message(self, message):
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[con.write_message(message) for con in self.connections]
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# client disconnected
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def on_close(self):
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self.connections.remove(self)
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print ("Client disconnected")
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class CompositeHandler(tornado.web.RequestHandler):
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def get(self, img1, img2):
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# images can only be in the output dir
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img1 = os.path.join(output_dir, os.path.basename(img1))
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img2 = os.path.join(output_dir, os.path.basename(img2))
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i1 = np.asarray(Image.open(img1).resize((200,200)).convert('RGBA'), dtype=float)
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i2 = np.asarray(Image.open(img2).resize((200,200)).convert('RGBA'), dtype=float)
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diffI = blend_modes.difference(i1,i2, opacity=1)
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noAlpha = diffI[:,:,0:3]
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maxValue = np.max(noAlpha)
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# make sure a black image wont crash the system
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factor = 255/maxValue if maxValue>0 else 0
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composite = Image.fromarray(np.uint8(noAlpha * factor))
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byteImgIO = BytesIO()
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composite.save(byteImgIO, format="png")
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byteImgIO.seek(0)
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# print(len(byteImgIO.read()))
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self.write(byteImgIO.read())
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self.set_header("Content-type", "image/png")
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application = tornado.web.Application([
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(r"/ws", WebSocketHandler),
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(r"/output/(.*)", tornado.web.StaticFileHandler, {"path": output_dir}),
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(r"/composite/(.*)/(.*)", CompositeHandler),
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(r"/(.*)", tornado.web.StaticFileHandler, {"path": web_dir, "default_filename": 'index.html'}),
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],debug=True)
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application.listen(8888)
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tornado.ioloop.IOLoop.instance().start()
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