Created
April 7, 2013 01:54
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| <html> | |
| <head> | |
| <script type="text/javascript" src="jquery-1.6.1.min.js"></script> | |
| <script type="text/javascript" src="processing-1.2.1.min.js"></script> | |
| <script type="text/javascript" src="websocket_processing.js"></script> | |
| </head> | |
| <body> | |
| <canvas id="processing"></canvas> | |
| </body> | |
| </html> |
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| circles = [] | |
| coffee_draw = (p5) -> | |
| p5.setup = () -> | |
| p5.size $(window).width(), $(window).height() | |
| p5.background 0 | |
| p5.ellipseMode p5.CENTER | |
| p5.colorMode p5.RBG | |
| p5.smooth() | |
| @ws = new WebSocket "ws://localhost:8080/service" | |
| @ws.onmessage = (evt) -> | |
| receivedMsg = evt.data | |
| msg = jQuery.parseJSON receivedMsg | |
| circle = new Circle p5, { | |
| x: msg.x | |
| y: msg.y | |
| r: msg.r | |
| g: msg.g | |
| b: msg.b | |
| diameter: msg.diameter | |
| } | |
| circles.push circle | |
| p5.draw = () -> | |
| circle.draw() for circle in circles | |
| class Circle | |
| constructor: (@p5, opts) -> | |
| @x = opts.x | |
| @y = opts.y | |
| @r = opts.r | |
| @g = opts.g | |
| @b = opts.b | |
| @diameter = opts.diameter | |
| draw: () -> | |
| @p5.fill @r, @g, @b | |
| @p5.ellipse @x, @y, @diameter, @diameter | |
| $(document).ready -> | |
| canvas = document.getElementById "processing" | |
| processing = new Processing canvas, coffee_draw |
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| -module(websocket_processing_server). | |
| -export([start/1, stop/0]). | |
| % start misultin http server | |
| start(Port) -> | |
| misultin:start_link([{port, Port}, {loop, fun(Req) -> handle_http(Req, Port) end}, | |
| {ws_loop, fun(Ws) -> handle_websocket(Ws) end}]). | |
| % stop misultin | |
| stop() -> | |
| misultin:stop(). | |
| % callback on request received | |
| handle_http(Req, _Port) -> | |
| % output | |
| Req:ok([]). | |
| % callback on received websockets data | |
| handle_websocket(Ws) -> | |
| receive | |
| {browser, Data} -> | |
| {struct, [{<<"x">>, X}, {<<"y">>, Y}]} = mochijson2:decode(Data), | |
| Ws:send([mochijson2:encode({struct, [{"x", X}, | |
| {"y", Y}, | |
| {"r", random:uniform(255)}, | |
| {"g", random:uniform(255)}, | |
| {"b", random:uniform(255)}, | |
| {"diameter", 10 + random:uniform(30)}]})]), | |
| handle_websocket(Ws); | |
| _Ignore -> | |
| handle_websocket(Ws) | |
| end. |
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