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annotate Resources/Samples/WebApplications/README.txt @ 3553:1a2d0316e8ec

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 26 Oct 2019 19:37:52 +0200
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1 ===================
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2 GENERAL INFORMATION
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3 ===================
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4
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5 This folder contains sample Web applications.
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6
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7 These Web applications make use of NodeJs (http://nodejs.org/). To run
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8 the applications, you therefore need to install NodeJs on your
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9 computer. NodeJs acts here as a lightweight, cross-platform Web server
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10 that statically serves the HTML/JavaScript files and that dynamically
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11 serves the Orthanc REST API as a reverse proxy (to avoid cross-domain
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12 problems with AJAX).
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13
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14 Once NodeJs is installed, start Orthanc with default parameters
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15 (i.e. HTTP port set to 8042), start NodeJs with the sample application
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16 you are interested in (e.g. "node DrawingDicomizer.js"). Then, open
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17 http://localhost:8000/ with a standard Web browser to try the sample
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18 application.
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19
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22 =======================================
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23 DRAWING DICOMIZER (DrawingDicomizer.js)
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24 =======================================
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25
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26 This sample shows how to convert the content of a HTML5 canvas as a
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27 DICOM file, using a single AJAX request to Orthanc.
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28
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29 Internally, the content of the HTML5 canvas is serialized through the
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30 standard "toDataURL()" method of the canvas object. This returns a
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31 string containing the PNG image encoded using the Data URI Scheme
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32 (http://en.wikipedia.org/wiki/Data_URI_scheme). Such a string is then
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33 sent to Orthanc using the '/tools/create-dicom' REST call, that
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34 transparently decompresses the PNG image into a DICOM image.