Mercurial > hg > orthanc
comparison Resources/Samples/WebApplications/README.txt @ 816:2f63c225c4c0
readme Web applications
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
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| date | Thu, 08 May 2014 16:08:17 +0200 |
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| 815:5dcfdd3bfca9 | 816:2f63c225c4c0 |
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| 1 =================== | |
| 2 GENERAL INFORMATION | |
| 3 =================== | |
| 4 | |
| 5 This folder contains sample Web applications. | |
| 6 | |
| 7 These Web applications make use of NodeJs (http://nodejs.org/). To run | |
| 8 the applications, you therefore need to install NodeJs on your | |
| 9 computer. NodeJs acts here as a lightweight, cross-platform Web server | |
| 10 that statically serves the HTML/JavaScript files and that dynamically | |
| 11 serves the Orthanc REST API as a reverse proxy (to avoid cross-domain | |
| 12 problems with AJAX). | |
| 13 | |
| 14 Once NodeJs is installed, start Orthanc with default parameters | |
| 15 (i.e. HTTP port set to 8042), start NodeJs with the sample application | |
| 16 you are interested in (e.g. "node DrawingDicomizer.js"). Then, open | |
| 17 http://localhost:8000/ with a standard Web browser to try the sample | |
| 18 application. | |
| 19 | |
| 20 | |
| 21 | |
| 22 ======================================= | |
| 23 DRAWING DICOMIZER (DrawingDicomizer.js) | |
| 24 ======================================= | |
| 25 | |
| 26 This sample shows how to convert the content of a HTML5 canvas as a | |
| 27 DICOM file, using a single AJAX request to Orthanc. | |
| 28 | |
| 29 Internally, the content of the HTML5 canvas is serialized through the | |
| 30 standard "toDataURL()" method of the canvas object. This returns a | |
| 31 string containing the PNG image encoded using the Data URI Scheme | |
| 32 (http://en.wikipedia.org/wiki/Data_URI_scheme). Such a string is then | |
| 33 sent to Orthanc using the '/tools/create-dicom' REST call, that | |
| 34 transparently decompresses the PNG image into a DICOM image. |