2025-01-16 03:25:58 +01:00
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<!DOCTYPE html>
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<html>
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<head>
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<link href="bootstrap-5.0.2-dist/css/bootstrap.min.css" rel="stylesheet" ></link>
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<script src="bootstrap-5.0.2-dist/js/bootstrap.bundle.min.js" ></script>
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<meta charset='utf-8'>
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<style>
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#output{
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position: relative;
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width: 100%;
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}
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#video_container{
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position: relative;
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}
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#video {
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position:absolute;
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z-index: 15;
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width: 100%;
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}
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#canvas-draw{
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position:absolute;
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z-index:10;
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width: 100%;
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}
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#photo {
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position:absolute;
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z-index:5;
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width: 100%;
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}
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#canvas-temp{
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display: none;
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}
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#tables {
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width: 100%;
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}
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#control-elements {
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height:30em;
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}
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</style>
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</head>
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<body>
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2025-02-25 18:11:42 +01:00
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<nav class="navbar navbar-expand-lg navbar-light bg-light">
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<div class="container-fluid">
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<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
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<span class="navbar-toggler-icon"></span>
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</button>
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<a class="navbar-brand" href="#">Open Microscopy App</a>
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<div class="collapse navbar-collapse" id="navbarTogglerDemo03">
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<ul class="navbar-nav me-auto mb-2 mb-lg-0">
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<li class="nav-item dropdown">
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<a class="nav-link dropdown-toggle" href="#" id="navbarScrollingDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
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Settings
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</a>
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<ul class="dropdown-menu" aria-labelledby="navbarScrollingDropdown">
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<li><a class="dropdown-item" href="/setup_microscope.html">Setup Camera</a></li>
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<li><a class="dropdown-item" href="/sample_prep_protocol.html">Setup Preparation Protocol</a></li>
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<li><hr class="dropdown-divider"></li>
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<li><a class="dropdown-item" href="#">Defaults</a></li>
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</ul>
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</li>
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<li class="nav-item">
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<a class="nav-link active" aria-current="page" href="/sample_intake.html">add sample</a>
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</li>
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<li class="nav-item dropdown">
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<a class="nav-link dropdown-toggle" href="#" id="navbarScrollingDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
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Observe
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</a>
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<ul class="dropdown-menu" aria-labelledby="navbarScrollingDropdown">
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<li><a class="dropdown-item" href="/observe_nema.html">Nematodes</a></li>
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<li><a class="dropdown-item" href="/observe_main.html">Filamentous and Protozoa</a></li>
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<li><a class="dropdown-item" href="/observe_bact.html">Bacteria</a></li>
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</ul>
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</li>
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<li class="nav-item">
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<a class="nav-link" href="/create_report.html">generate report</a>
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</li>
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</ul>
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</div>
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</div>
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</nav>
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2025-01-16 03:25:58 +01:00
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<!-- this canvas is not displayed and only used to generate the photo -->
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<canvas id="canvas-temp"></canvas>
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<div class="container">
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2025-01-23 14:25:08 +01:00
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<div class="row">
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<div class="col-3">
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<label class = "form-label" for="camera_chooser">choose the camera setup</label>
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<select class="form-select" aria-label="Default select example"
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name="camera_chooser" id = "camera_chooser"></select>
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</div>
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<div class="col-3">
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<label class = "form-label" for="protocol_chooser">choose the preparation protocol</label>
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<select class="form-select" aria-label="Default select example"
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name="protocol_chooser" id = "protocol_chooser"></select>
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</div>
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<div class="col-3">
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<label class = "form-label" for="dilution">change dilution</label>
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<input class="form-control" name="dilution" id = "dilution"></input>
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</div>
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<div class="col-3">
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<label class = "form-label" for="sample_chooser">choose the sample</label>
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<select class="form-select" aria-label="Default select example"
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name="sample_chooser" id = "sample_chooser"></select>
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</div>
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</div>
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2025-01-16 03:25:58 +01:00
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<!-- the output div is used to display the video, the photo and the canvas where you can draw in (and measure) your organisms. -->
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<div id="output" class="row">
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<div id = "video_container" class="col-9">
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<img id="photo" alt="The screen capture will appear in this box." ></img>
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<canvas id="canvas-draw"></canvas>
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<video autoplay="true" id="video"></video>
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</div>
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<div id = "control-elements" class="col-3 ">
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<button class="btn btn-primary float-end" onclick="takePicture();" id="start-button">Take photo</button>
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<form id="organism_type" class="form-check" onsubmit="return false;">
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<input type="radio" class="btn-check" name="choice" value="Fungal_Feeding" id="org-type-Fungal_Feeding" checked></input>
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2025-01-29 15:45:00 +01:00
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<label class="btn btn-outline-success" for="org-type-Fungal_Feeding">Fungal Feeding</label>
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2025-01-16 03:25:58 +01:00
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<input type="radio" class="btn-check" name="choice" value="Bacterial_Feeding" id="org-type-Bacterial_Feeding"></input>
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2025-01-29 15:45:00 +01:00
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<label class="btn btn-outline-success" for="org-type-Bacterial_Feeding">Bacterial Feeding</label>
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2025-01-16 03:25:58 +01:00
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<input type="radio" class="btn-check" name="choice" value="Predatory" id="org-type-Predatory"></input>
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<label class="btn btn-outline-success" for="org-type-Predatory">Predatory</label>
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2025-01-29 15:45:00 +01:00
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<input type="radio" class="btn-check" name="choice" value="Root_Feeding" id="org-type-Root_Feeding"></input>
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<label class="btn btn-outline-success" for="org-type-Root_Feeding">Root Feeding</label>
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2025-01-16 03:25:58 +01:00
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</form>
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<div id="organism" class="row align-items-end">
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<div class="col" name="Notes" >
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<label class = "form-label" for="Notes">Notes</label>
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<input class="form-control" type="textfield" name="Notes" value="" id="nemaNotes"> </input>
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</div>
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</div>
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<div id="organisms-table">
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<h2> nematode </h2>
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<table id= "org-table" style="width:100%">
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<thead>
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<tr>
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<th>
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pictures
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</th>
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</tr>
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</thead>
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<tbody>
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</tbody>
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</table>
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</div>
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<button class="btn btn-primary float-end" onclick="add_picture();">add picture</button>
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<button class="btn btn-primary float-end" onclick="submit_nematode();">submit Nematode</button>
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</div>
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2025-01-23 14:25:08 +01:00
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<div class="col-9">
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<div class="row">
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<button class="btn btn-primary float-end" onclick="toggleFullscreen();" id="fullscreen-button">
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toggle Fullscreen video
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</button>
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</div>
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</div>
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2025-01-16 03:25:58 +01:00
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</div>
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<div id="tables">
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<div>
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<h2> nematodes </h2>
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<table id= "Results" style="width:100%">
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<thead>
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<tr>
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<th>
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number
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</th>
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<th>
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type
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</th>
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<th>
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picture(s)
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</th>
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<th style="width:15%">
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2025-01-23 14:25:08 +01:00
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<button class="btn btn-primary float-end" id="Result_submit">submit result</button>
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2025-01-16 03:25:58 +01:00
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</th>
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</tr>
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</thead>
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<tbody>
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</tbody>
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</table>
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</div>
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</div>
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</div>
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<script>
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2025-01-23 14:25:08 +01:00
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var microscope_setups = [];
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var microscope_setup;
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var default_setup_id;
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var prep_protocols = {};
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var prep_protocol;
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var default_protocol_id;
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var sample;
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var samples = {};
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var dilution_chooser = document.querySelector("#dilution")
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var db;
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let openRequest = indexedDB.open("my_db");
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openRequest.onerror = function() {
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console.error("Error", openRequest.error);
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};
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openRequest.onsuccess = function() {
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db = openRequest.result;
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get_default_camera_setup();
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get_default_prep_setup();
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get_all_samples();
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// continue working with database using db object
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};
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function get_default_camera_setup(){
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const request = db.transaction('defaults')
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.objectStore('defaults')
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.get(0);
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request.onsuccess = ()=> {
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default_setup_id = request.result.microscope_setup;
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get_all_video_prefs();
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// width of FoV -- will be supplied by FLASK microscope setup.
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}
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request.onerror = (err)=> {
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console.error(`Error to get all setups: ${err}`)
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}
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}
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function get_all_video_prefs(){
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const request = db.transaction('microscope_setup')
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.objectStore('microscope_setup')
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.openCursor();
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request.onsuccess = ()=> {
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let cursor = event.target.result;
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if (cursor) {
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// Access the current record
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make_camera_chooser(cursor.value, cursor.key);
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// Move to the next record
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cursor.continue();
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}
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else{
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startup();
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}
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}
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request.onerror = (err)=> {
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console.error(`Error to get all setups: ${err}`)
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}
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}
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var camera_chooser = document.querySelector("#camera_chooser");
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function make_camera_chooser(setup, key){
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let cameraID = document.createElement("option");
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let text = document.createTextNode(setup.name);
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cameraID.value = key;
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microscope_setups[key] = setup;
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if (key == default_setup_id){
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cameraID.defaultSelected = true;
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text.textContent += " (default)"
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microscope_setup = setup;
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}
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cameraID.appendChild(text);
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camera_chooser.appendChild(cameraID);
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}
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camera_chooser.addEventListener("change", change_cam);
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function change_cam(){
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microscope_setup = microscope_setups[this.value];
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startup();
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};
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function get_default_prep_setup(){
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const request = db.transaction('defaults')
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.objectStore('defaults')
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.get(1);
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request.onsuccess = ()=> {
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default_protocol_id = request.result.prep_setup;
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get_all_prep_prefs();
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// width of FoV -- will be supplied by FLASK microscope setup.
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}
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request.onerror = (err)=> {
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console.error(`Error to get all setups: ${err}`)
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}
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}
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function get_all_prep_prefs(){
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const request = db.transaction('prep_protocol')
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.objectStore('prep_protocol')
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.openCursor();
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request.onsuccess = ()=> {
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let cursor = event.target.result;
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if (cursor) {
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// Access the current record
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make_protocol_chooser(cursor.value, cursor.key);
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// Move to the next record
|
|
|
|
|
cursor.continue();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
request.onerror = (err)=> {
|
|
|
|
|
console.error(`Error to get all setups: ${err}`)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var protocol_chooser = document.querySelector("#protocol_chooser");
|
|
|
|
|
|
|
|
|
|
function make_protocol_chooser(protocol, key){
|
|
|
|
|
let protocolID = document.createElement("option");
|
|
|
|
|
let text = document.createTextNode(protocol.name);
|
|
|
|
|
protocolID.value = key;
|
|
|
|
|
prep_protocols[key] = protocol;
|
|
|
|
|
if (key == default_protocol_id){
|
|
|
|
|
protocolID.defaultSelected = true;
|
|
|
|
|
text.textContent += " (default)";
|
|
|
|
|
dilution_chooser.value = protocol.Main_Dilution;
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
protocolID.appendChild(text);
|
|
|
|
|
protocol_chooser.appendChild(protocolID);
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
protocol_chooser.addEventListener("change", change_protocol);
|
|
|
|
|
function change_protocol(){
|
|
|
|
|
protocol = prep_protocols[this.value];
|
|
|
|
|
dilution_chooser.value = prep_protocol.Main_Dilution;
|
|
|
|
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
function get_all_samples(){
|
|
|
|
|
const request = db.transaction('sample')
|
|
|
|
|
.objectStore('sample')
|
|
|
|
|
.openCursor();
|
|
|
|
|
request.onsuccess = ()=> {
|
|
|
|
|
let cursor = event.target.result;
|
|
|
|
|
if (cursor) {
|
|
|
|
|
// Access the current record
|
|
|
|
|
make_sample_chooser(cursor.value, cursor.key);
|
|
|
|
|
sample = cursor.key;
|
|
|
|
|
// Move to the next record
|
|
|
|
|
cursor.continue();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
request.onerror = (err)=> {
|
|
|
|
|
console.error(`Error to get all setups: ${err}`)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var sample_chooser = document.querySelector("#sample_chooser");
|
|
|
|
|
|
|
|
|
|
function make_sample_chooser(sample, key){
|
|
|
|
|
let sampleID = document.createElement("option");
|
|
|
|
|
let text = document.createTextNode(sample.Name);
|
|
|
|
|
sampleID.value = key;
|
|
|
|
|
samples[key] = sample;
|
|
|
|
|
sampleID.appendChild(text);
|
|
|
|
|
sample_chooser.appendChild(sampleID);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
sample_chooser.addEventListener("change", change_sample);
|
|
|
|
|
function change_sample(){
|
|
|
|
|
sample = samples[this.value];
|
|
|
|
|
};
|
|
|
|
|
|
2025-01-16 03:25:58 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
var nematode = {
|
|
|
|
|
"type" : "",
|
|
|
|
|
"pictures" : [],
|
|
|
|
|
};
|
2025-01-23 14:25:08 +01:00
|
|
|
|
|
|
|
|
var nematodes = [];
|
|
|
|
|
|
|
|
|
|
function submit_nematode(){
|
|
|
|
|
if (nematode.type == "") {
|
|
|
|
|
nematode.type = organism_type.choice.value;
|
|
|
|
|
}
|
|
|
|
|
nematodes.push(nematode);
|
|
|
|
|
nematode = {
|
|
|
|
|
"type" : "",
|
|
|
|
|
"pictures" : [],
|
|
|
|
|
};
|
|
|
|
|
update_nematode_table();
|
|
|
|
|
update_results_table();
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
2025-01-16 03:25:58 +01:00
|
|
|
function add_picture(){
|
|
|
|
|
let photo = document.getElementById("photo");
|
|
|
|
|
if (nematode.type == "") {
|
|
|
|
|
nematode.type = organism_type.choice.value;
|
|
|
|
|
}
|
|
|
|
|
nematode.pictures.push({
|
|
|
|
|
"img" : photo.src,
|
|
|
|
|
"path" : lines[0],
|
|
|
|
|
"notes" : nemaNotes.value
|
|
|
|
|
});
|
|
|
|
|
lines = [];
|
|
|
|
|
video.style.zIndex = 15;
|
|
|
|
|
clearPhoto();
|
|
|
|
|
nemaNotes.value = "";
|
|
|
|
|
update_nematode_table();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var nematode_table = document.querySelector("#org-table");
|
|
|
|
|
|
|
|
|
|
// update organism table
|
|
|
|
|
|
|
|
|
|
function update_nematode_table(){
|
|
|
|
|
while (nematode_table.children[1].hasChildNodes()) {
|
|
|
|
|
nematode_table.children[1].removeChild(nematode_table.children[1].lastChild);
|
|
|
|
|
}
|
|
|
|
|
nematode.pictures.forEach((o, k) => render_nematode_table(o,k));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// remove organism from organsisms and update table and canvas
|
|
|
|
|
|
|
|
|
|
function remove_picture(index){
|
|
|
|
|
nematode.pictures.splice(index, 1);
|
|
|
|
|
lines=[];
|
|
|
|
|
update_nematode_table();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// make a new organism table
|
|
|
|
|
function render_nematode_table(image, index){
|
|
|
|
|
let newRow = nematode_table.children[1].insertRow();
|
|
|
|
|
let picture = newRow.insertCell(0);
|
|
|
|
|
let notes = newRow.insertCell(1);
|
|
|
|
|
let button = newRow.insertCell(2);
|
|
|
|
|
picture.innerHTML = "<img class='img-thumbnail'src='" + image.img + "'/>";
|
|
|
|
|
picture.style.width = "2em";
|
|
|
|
|
notes.innerHTML = image.notes;
|
|
|
|
|
button.innerHTML = '<button class="btn btn-primary float-end" onclick=remove_picture(' + index + ')>remove</button>';
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
var results_table = document.querySelector("#Results");
|
|
|
|
|
|
|
|
|
|
function update_results_table(){
|
|
|
|
|
while (results_table.children[1].hasChildNodes()) {
|
|
|
|
|
results_table.children[1].removeChild(results_table.children[1].lastChild);
|
|
|
|
|
}
|
|
|
|
|
nematodes.forEach((o, k) => render_results_table(o,k));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function render_results_table(nematode, index){
|
|
|
|
|
let newRow = results_table.children[1].insertRow();
|
|
|
|
|
let nematode_number = newRow.insertCell(0);
|
|
|
|
|
let type = newRow.insertCell(1);
|
|
|
|
|
let pictures = newRow.insertCell(2);
|
|
|
|
|
let button = newRow.insertCell(3);
|
|
|
|
|
nematode_number.innerHTML = index+1;
|
|
|
|
|
let pics = "";
|
|
|
|
|
nematode.pictures.forEach((image, i) => {
|
|
|
|
|
pics += "<img class='img-thumbnail' style='height:5em' src='" + image.img + "'/>";
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
type.innerHTML = nematode.type;
|
|
|
|
|
pictures.innerHTML = pics;
|
|
|
|
|
button.innerHTML = "<button class='btn btn-primary float-end' onclick=remove_nematode(" + index + ")>remove</button>";
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function remove_nematode(index){
|
|
|
|
|
nematodes.splice(index, 1);
|
|
|
|
|
lines=[];
|
|
|
|
|
update_results_table();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function toggleFullscreen() {
|
|
|
|
|
let elem = document.querySelector("#output");
|
|
|
|
|
canvas_draw.style.width = video.offsetWidth
|
|
|
|
|
if (!document.fullscreenElement) {
|
|
|
|
|
elem.requestFullscreen().catch((err) => {
|
|
|
|
|
alert(
|
|
|
|
|
`Error attempting to enable fullscreen mode: ${err.message} (${err.name})`,
|
|
|
|
|
);
|
|
|
|
|
});
|
|
|
|
|
} else {
|
|
|
|
|
document.exitFullscreen();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
2025-01-23 14:25:08 +01:00
|
|
|
submit_results = document.querySelector("#Result_submit")
|
|
|
|
|
submit_results.addEventListener("click",send_result_to_backend);
|
|
|
|
|
|
|
|
|
|
function send_result_to_backend(){
|
|
|
|
|
let to_send = {
|
|
|
|
|
"nematodes" : nematodes,
|
|
|
|
|
"sampleID" : sample_chooser.value,
|
2025-01-29 15:45:39 +01:00
|
|
|
"prepID" : protocol_chooser.value,
|
|
|
|
|
"setupID": camera_chooser.value,
|
2025-01-23 14:25:08 +01:00
|
|
|
"dilution" : dilution_chooser.value,
|
2025-01-29 15:45:39 +01:00
|
|
|
"datetime" : new Date,
|
|
|
|
|
|
2025-01-23 14:25:08 +01:00
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
let transaction = db.transaction(["nematode_scan"], "readwrite");
|
|
|
|
|
let objectStore = transaction.objectStore("nematode_scan");
|
|
|
|
|
let add_request = objectStore.add(to_send); // (3)
|
|
|
|
|
add_request.onsuccess = (event) => {
|
|
|
|
|
console.log("All done!");
|
|
|
|
|
};
|
|
|
|
|
add_request.onerror = (event) => {
|
|
|
|
|
console.log("something went wrong");
|
|
|
|
|
// Don't forget to handle errors!
|
|
|
|
|
};
|
|
|
|
|
}
|
2025-01-16 03:25:58 +01:00
|
|
|
|
|
|
|
|
var video = document.querySelector("#video");
|
|
|
|
|
var out = document.querySelector("#output");
|
|
|
|
|
// width of FoV -- will be supplied by FLASK microscope setup.
|
|
|
|
|
var real_width_FoV = 255;
|
|
|
|
|
|
2025-01-29 15:45:58 +01:00
|
|
|
|
2025-01-16 03:25:58 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
// init drawing
|
|
|
|
|
|
|
|
|
|
var canvas_draw = document.querySelector("#canvas-draw");
|
|
|
|
|
var ctx = canvas_draw.getContext('2d');
|
|
|
|
|
var pos = { x: 0, y: 0 };
|
|
|
|
|
|
|
|
|
|
// store lines for measurement
|
|
|
|
|
|
|
|
|
|
var lines = [];
|
|
|
|
|
var line = [];
|
|
|
|
|
|
|
|
|
|
// calculate length of line - helper function
|
|
|
|
|
|
|
|
|
|
function get_length(line){
|
|
|
|
|
var dist = 0.0;
|
|
|
|
|
if (line){
|
|
|
|
|
for (let j = 0; j < line.length-1; ++j) {
|
|
|
|
|
dist += Math.sqrt((line[j].x - line[j+1].x) ** 2 + (line[j].y - line[j+1].y) ** 2);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return dist/canvas_draw.width
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// events to set the position of the drawing cursor
|
|
|
|
|
canvas_draw.addEventListener('mousedown', setPosition);
|
|
|
|
|
canvas_draw.addEventListener('mouseenter', setPosition);
|
|
|
|
|
|
|
|
|
|
// set new position from mouse event
|
|
|
|
|
// scale canvas coords
|
|
|
|
|
|
|
|
|
|
function setPosition(e) {
|
|
|
|
|
var rect = canvas_draw.getBoundingClientRect();
|
|
|
|
|
|
|
|
|
|
scaleX = canvas_draw.width / rect.width, // relationship bitmap vs. element for x
|
|
|
|
|
scaleY = canvas_draw.height / rect.height;
|
|
|
|
|
pos.x = (e.clientX - rect.x) * scaleX;
|
|
|
|
|
pos.y = (e.clientY - rect.y) * scaleY;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// the draw function to draw onto canvas
|
|
|
|
|
|
|
|
|
|
canvas_draw.addEventListener('mousemove', draw);
|
|
|
|
|
|
|
|
|
|
function draw(e) {
|
|
|
|
|
// mouse left button must be pressed and video must be hidden / a photo must have been taken.
|
|
|
|
|
if (e.buttons !== 1) {
|
|
|
|
|
// if the length of the line is 0 there is nothing to do and nothing to calculate.
|
|
|
|
|
if (line.length > 1) {
|
|
|
|
|
console.log(organism_type.choice.value);
|
|
|
|
|
let xs=[];
|
|
|
|
|
let ys=[];
|
|
|
|
|
// create a bounding box line for the Nematode.
|
|
|
|
|
x_max = Math.max(... line.map(xs=>xs.x));
|
|
|
|
|
y_max = Math.max(... line.map(ys=>ys.y));
|
|
|
|
|
x_min = Math.min(... line.map(xs=>xs.x));
|
|
|
|
|
y_min = Math.min(... line.map(ys=>ys.y));
|
|
|
|
|
line = []
|
|
|
|
|
let bounding_box_size=20;
|
|
|
|
|
let delta_x = (x_max-x_min)*bounding_box_size/100;
|
|
|
|
|
let delta_y = (y_max-y_min)*bounding_box_size/100;
|
|
|
|
|
line.push({"x":x_max+delta_x,"y":y_max+delta_y});
|
|
|
|
|
line.push({"x":x_max+delta_x,"y":y_min-delta_y});
|
|
|
|
|
line.push({"x":x_min-delta_x,"y":y_min-delta_y});
|
|
|
|
|
line.push({"x":x_min-delta_x,"y":y_max+delta_y});
|
|
|
|
|
line.push({"x":x_max+delta_x,"y":y_max+delta_y});
|
|
|
|
|
// clear line array
|
|
|
|
|
lines.push(line);
|
|
|
|
|
draw_path(line);
|
|
|
|
|
line = [];
|
|
|
|
|
}
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
// draw on canvas.
|
|
|
|
|
if (e.buttons == 1){
|
|
|
|
|
ctx.beginPath(); // begin
|
|
|
|
|
ctx.lineWidth = 0.5;
|
|
|
|
|
ctx.lineCap = 'round';
|
|
|
|
|
ctx.strokeStyle = 'black';
|
|
|
|
|
// update line
|
|
|
|
|
// first time push the first position
|
|
|
|
|
if (line.length==0){
|
|
|
|
|
line.push({x:pos.x, y:pos.y});
|
|
|
|
|
}
|
|
|
|
|
ctx.moveTo(pos.x, pos.y); // from
|
|
|
|
|
setPosition(e);
|
|
|
|
|
// everytime push the last position
|
|
|
|
|
line.push({x:pos.x, y:pos.y});
|
|
|
|
|
ctx.lineTo(pos.x, pos.y); // to
|
|
|
|
|
ctx.stroke(); // draw it!
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
function draw_path(path){
|
|
|
|
|
// draw a path on the canvas.
|
|
|
|
|
ctx.beginPath(); // begin
|
|
|
|
|
ctx.lineWidth = 0.5;
|
|
|
|
|
ctx.lineCap = 'round';
|
|
|
|
|
ctx.strokeStyle = 'black';
|
|
|
|
|
for (var i = 0; i < path.length-1; i++) {
|
|
|
|
|
ctx.moveTo(path[i].x, path[i].y);
|
|
|
|
|
ctx.lineTo(path[i+1].x, path[i+1].y);
|
|
|
|
|
ctx.stroke();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
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function update_canvas_draw(organisms){
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lines=[];
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canvas_draw.getContext('2d').clearRect(0, 0, canvas_draw.width, canvas_draw.height);
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for (var i = 0; i < organisms.length; i++){
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if (organisms[i].path_length){
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draw_path(organisms[i].path_length);
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}
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if (organisms[i].path_width){
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draw_path(organisms[i].path_width);
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}
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}
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}
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let streaming = false;
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function startup() {
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output = document.getElementById("output");
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video = document.getElementById("video");
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canvas = document.getElementById("canvas-temp");
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photo = document.getElementById("photo");
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startButton = document.getElementById("start-button");
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navigator.mediaDevices
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2025-01-23 14:25:08 +01:00
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.getUserMedia(microscope_setup.video_prefs)
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2025-01-16 03:25:58 +01:00
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.then((stream) => {
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video.srcObject = stream;
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video.play();
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})
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.catch((err) => {
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console.error(`An error occurred: ${err}`);
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});
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video.addEventListener(
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"canplay",
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(ev) => {
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if (!streaming) {
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video_aspect = video.videoWidth / video.videoHeight;
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video.style.aspectRatio = video_aspect;
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photo.style.aspectRatio = video_aspect;
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canvas.style.aspectRatio = video_aspect;
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canvas_draw.style.aspectRatio = video_aspect;
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canvas_draw.height = canvas_draw.height*5;
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2025-01-17 03:52:45 +01:00
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canvas_draw.width = canvas_draw.height*video_aspect;
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2025-01-16 03:25:58 +01:00
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streaming = true;
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}
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},
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false,
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);
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startButton.addEventListener(
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"click",
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(ev) => {
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takePicture();
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ev.preventDefault();
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},
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false,
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);
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clearPhoto();
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}
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// Fill the photo with an indication that none has been
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// captured.
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function clearPhoto() {
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const context = canvas.getContext("2d");
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context.fillRect(0, 0, canvas.width, canvas.height);
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const data = canvas.toDataURL("image/png");
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photo.setAttribute("src", data);
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}
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// Capture a photo by fetching the current contents of the video
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// and drawing it into a canvas, then converting that to a PNG
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// format data URL. By drawing it on an offscreen canvas and then
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// drawing that to the screen, we can change its size and/or apply
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// other changes before drawing it.
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function takePicture() {
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canvas_draw.getContext('2d').clearRect(0, 0, canvas_draw.width, canvas_draw.height);
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const context = canvas.getContext("2d");
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if (video.videoWidth && video.videoHeight) {
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canvas.width = video.videoWidth;
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canvas.height = video.videoHeight;
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context.drawImage(video, 0, 0, video.videoWidth, video.videoHeight);
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video.style.zIndex = 1;
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photo.style.zIndex = 5;
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canvas.style.zIndex= 10;
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const data = canvas.toDataURL("image/png");
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photo.setAttribute("src", data);
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} else {
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clearPhoto();
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}
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}
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// Set up our event listener to run the startup process
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// once loading is complete.
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//})();
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</script>
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</body>
|
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</html>
|
