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<!DOCTYPE html>
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<title>CA4106 Report</title>
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<div style="min-width: 980px;max-width: 980px;margin:auto;">
<article class="markdown-body entry-content p-5" itemprop="text"><p><a target="_blank" rel="noopener noreferrer" href="https://camo.githubusercontent.com/db82792eff3ca3b584742e65bd6f3a1258c27c34/68747470733a2f2f68617264776172656173736f63696174696f6e2e69652f77702d636f6e74656e742f75706c6f6164732f323031372f31322f4463752d6c6f676f2e706e67"><img src="https://camo.githubusercontent.com/db82792eff3ca3b584742e65bd6f3a1258c27c34/68747470733a2f2f68617264776172656173736f63696174696f6e2e69652f77702d636f6e74656e742f75706c6f6164732f323031372f31322f4463752d6c6f676f2e706e67" alt="Logo" data-canonical-src="https://hardwareassociation.ie/wp-content/uploads/2017/12/Dcu-logo.png" style="max-width:100%;"></a></p>
<h1><a id="user-content-ca4106--cloud-computing" class="anchor" aria-hidden="true" href="#ca4106--cloud-computing"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>CA4106 : Cloud Computing</h1>
<h2><a id="user-content-project-report--team-9" class="anchor" aria-hidden="true" href="#project-report--team-9"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Project Blog : Team 9</h2>
<p>The following document is the blog for the CA4106 project. The project was to develop a Paint application in groups of four and deploy it to the Cloud.</p>
<p>The required tasks were :</p>
<ul>
<li>Application having Lines, Rectangles, Circles and Eraser objects with colours.</li>
<li>Developing the application using JavaScript and HTML5.</li>
<li>Deploying it to <a href="https://cloud.google.com/appengine/" rel="nofollow">Google App Engine</a></li>
</ul>
<p><a href="https://ca4106wepaint.appspot.com/" rel="nofollow"><em>Click here to access our application</em></a></p>
<h3><a id="user-content-project-process-and-team-members" class="anchor" aria-hidden="true" href="#project-process-and-team-members"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Project process and team members</h3>
<hr>
<p>The project deliverables were communicated clearly and there was a lot of documentation available. We decided to separate the tasks, giving everyone responsiblity on the project.</p>
<table>
<thead>
<tr>
<th>Name</th>
<th align="center">ID</th>
<th>Task</th>
</tr>
</thead>
<tbody>
<tr>
<td>Bronwyn Conroy</td>
<td align="center">15357066</td>
<td>Deployment to GAE and video creation</td>
</tr>
<tr>
<td>James Leahy</td>
<td align="center">15464928</td>
<td>Deployment to GAE and video creation</td>
</tr>
<tr>
<td>Dylan Da Costa</td>
<td align="center">18103235</td>
<td>Report creation (Markdown language)</td>
</tr>
<tr>
<td>Andrea Mouraud</td>
<td align="center">18103154</td>
<td>Application development</td>
</tr>
</tbody>
</table>
<h3><a id="user-content-video-presentation" class="anchor" aria-hidden="true" href="#video-presentation"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Video presentation</h3>
<hr>
<video width="640" height="360" controls="">
<source src="/videos/presentation.mp4" type="video/mp4">
</video>
<h3><a id="user-content-research-for-the-project" class="anchor" aria-hidden="true" href="#research-for-the-project"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Research for the project</h3>
<hr>
<p>When everyone was assigned to a task, each person conducted some research on their own allocated part.</p>
<ul>
<li><strong>Bronwyn</strong> and <strong>James</strong> based their research around <a href="https://cloud.google.com/appengine/docs/standard/python/getting-started/hosting-a-static-website" rel="nofollow">Static Website on Google App Engine</a>.</li>
<li><strong>Andrea</strong> already knew the languages but used <a href="https://stackoverflow.com/" rel="nofollow">Stackoverflow</a> when he had issues.</li>
<li><strong>Dylan</strong> did some research about the <a href="https://www.markdownguide.org/" rel="nofollow">Markdown language</a> as Andrea told him that we were going to put the report on the website using a report made in Markdown.</li>
</ul>
<h3><a id="user-content-development-of-the-application" class="anchor" aria-hidden="true" href="#development-of-the-application"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Development of the application</h3>
<hr>
<p>All development of source code was handled by Andrea.</p>
<p>The development approach employed included languages <strong>HTML5</strong> (HyperText Markup Language), <strong>CSS3</strong> (Cascading Style Sheet) and <strong>Javascript</strong>. The use of <strong>Jquery</strong> was discussed, however as it was not listed within the scope of the requirements, the application was developed without the Jquery library. This made development a little harder, as many functions had to be manually created.</p>
<p>We adopted an agile approach, focusing on delivering basic functionality first and additional functionality for every subsequent sprint. The breakdown of the sprints is as follows:</p>
<p><strong>Week 1 – 2: </strong><br>Layer control, background fill, colour palette, erase, brush size, clear, free hand pencil, Unit testing, integration testing, user testing.</p>
<p><strong>Week 2 – 3: </strong><br>Lines, Squares, Circles, save and import png, undo, redo, Unit testing, integration testing, user testing.</p>
<p><strong>Week 3 – 4: </strong><br>Flood fill, Save and import .paint file, Unit testing, integration testing, user testing.</p>
<p><strong>Week 4 – 5: </strong><br>Deployment, User testing.</p>
<p>Github was used for version control during development and testing. Our github repository can be accessed <a href="https://github.com/andreamouraud/CA4106_Paint" rel="nofollow">here</a>.</p>
<p>The project adapted a tree structure. All images, scripts and stylesheets were grouped into respective directories. The file structure is as follows:</p>
<pre class="rich-diff-level-zero"><code style="text-decoration: none"class="rich-diff-level-one">
CA4106_Paint
│ README.md
│ index.html
│ report.html
│
└───Scripts
│ │ paint.js
│ └───Objects
│ │ *.js
│
└───styles
| │ style.css
│
└───images
| │ *.png
|
└───videos
| presentation.mp4
</code></pre>
<h4><a id="user-content-browser-compatibility" class="anchor" aria-hidden="true" href="#browser-compatibility"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Browser compatibility</h4>
<table>
<thead>
<tr>
<th>Browser</th>
<th align="center">Compatible</th>
</tr>
</thead>
<tbody>
<tr>
<td>Android</td>
<td align="center"><g-emoji class="g-emoji" alias="heavy_check_mark" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/2714.png">✔️</g-emoji></td>
</tr>
<tr>
<td>Edge</td>
<td align="center"><g-emoji class="g-emoji" alias="heavy_check_mark" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/2714.png">✔️</g-emoji></td>
</tr>
<tr>
<td>IE</td>
<td align="center"><g-emoji class="g-emoji" alias="x" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/274c.png">❌</g-emoji></td> </tr>
<tr>
<td>Firefox</td>
<td align="center"><g-emoji class="g-emoji" alias="heavy_check_mark" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/2714.png">✔️</g-emoji></td>
</tr>
<tr>
<td>Opera</td>
<td align="center"><g-emoji class="g-emoji" alias="heavy_check_mark" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/2714.png">✔️</g-emoji></td>
</tr>
<tr>
<td>Safari</td>
<td align="center"><g-emoji class="g-emoji" alias="heavy_check_mark" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/2714.png">✔️</g-emoji></td>
</tr>
<tr>
<td>Chrome</td>
<td align="center"><g-emoji class="g-emoji" alias="heavy_check_mark" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/2714.png">✔️</g-emoji></td>
</tr>
</tbody>
</table>
<h3><a id="user-content-testing-of-the-application" class="anchor" aria-hidden="true" href="#testing-of-the-application"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Testing of the application</h3>
<hr>
<p>As discussed, we adopted an agile approach to development. Each sprint in development incorporated unit testing, integration testing and user testing. </p>
<p>During development Andrea conducted unit tests to verify each functions behaviour independently from other parts of the application. Once each function was satisfactory, integration tests were conducted to make sure all units worked together with the whole system. </p>
<p>Upon completion of each sprint, all team member conducted individual user testing. The group then discussed and issues/possible improvements for the next sprint. There were a few minor bugs regarding the buttons, but they were swiftly fixed.</p>
<p>As the only browser used during the development phase was Chrome, when the application was almost finished we decided to check if it was working on every other browser.</p>
<p>We were surprised as none of them but Chrome would work. After some research, we found out that Chrome was using a Javascript version that has not been released yet. Every other browser was still using the latest version and they were waiting for the next update to be released. This was an issue that was quickly rectified after testing.</p>
<p><em>An example of one of the issues:</em></p>
<p>Before</p>
<div class="highlight highlight-source-js"><pre><span class="pl-k">class</span> <span class="pl-en">Rectangle</span> {
name <span class="pl-k">=</span> <span class="pl-s"><span class="pl-pds">"</span>Rectangle<span class="pl-pds">"</span></span>;
}</pre></div>
<p>After</p>
<div class="highlight highlight-source-js"><pre><span class="pl-k">class</span> <span class="pl-en">Rectangle</span> {
<span class="pl-en">constructor</span>() {
<span class="pl-c1">this</span>.<span class="pl-c1">name</span> <span class="pl-k">=</span> <span class="pl-s"><span class="pl-pds">"</span>Rectangle<span class="pl-pds">"</span></span>;
}
}</pre></div>
<p><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes" rel="nofollow">Classes - JavaScript | MDN - Mozilla</a></p>
<blockquote>
<p>Public and private field declarations are an experimental feature (stage 3) proposed at TC39, the JavaScript standards committee.</p>
</blockquote>
<h3><a id="user-content-deployment-of-the-application" class="anchor" aria-hidden="true" href="#deployment-of-the-application"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Deployment of the application</h3>
<hr>
<p>Google App Engine (GAE) is a fully managed serverless platform in which applications may be deployed. It allows developers to focus solely on code while GAE handles the servers and configurations. GAE provides application security, traffic splitting and diagnostics. The best part is you only pay for what you use.</p>
<p>In order to deploy our application, we used <a href="https://cloud.google.com/appengine/docs/standard/python/getting-started/hosting-a-static-website" rel="nofollow">Static Website on Google App Engine</a>.<br>
</p><p>The steps for deployment were as follows:</p>
<p>1. Download the Google Cloud SDK.<br>
2. Create or sign in to an account via the terminal by running the command <code>gcloud init</code>.<br>
3. Create a project, in this case ca4106wepaint, with the following command <code>gcloud projects create ca4106wepaint</code>.<br>
4. Initialize the application and choose the region (Western Europe) by entering <code>gcloud app create --project=ca4106wepaint</code> into the terminal.<br>
5. View the project on the <a href="https://console.cloud.google.com/" rel="nofollow">Google Console</a>. All project information is displayed here including the name and ID.<br>
6. Navigate to the Google Cloud home directory, <code>C:\Users\james\AppData\Local\Google\Cloud SDK></code> in this case and create a directory with the same name as the project using <code>mkdir ca4106wepaint</code>.<br>
7. Create an <code>app.yaml</code> file in the ca4106wepaint directory. This tells Google app engine where to locate the files and what files to upload.<br>
8. Place the css file <code>style.css</code>, HTML file <code>index.html</code> and all javascript files in the ca4106wepaint directory.<br>
9. Deploy the application by running the command <code>gcloud app deploy</code>.<br>
10. View the paint application by running <code>gcloud app browse</code> or simply entering the link <a href="https://ca4106wepaint.appspot.com/" rel="nofollow">ca4106wepaint.appspot.com</a>.</p>
<p>During the deployment we faced some minors issues as the file structure is different than on a Local machine, but James quickly resolved them.
For example, if on the machine the path is <code>stylesheets/style</code> it would be <code>/stylesheets/style</code> for the deployment.</p>
<p>The application is deployed <a href="https://ca4106wepaint.appspot.com/" rel="nofollow"><strong>here</strong></a></p>
<h3><a id="user-content-the-features-of-our-application" class="anchor" aria-hidden="true" href="#the-features-of-our-application"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>The Features of our application</h3>
<hr>
<table>
<thead>
<tr>
<th>Feature</th>
<th align="center">Required</th>
</tr>
</thead>
<tbody>
<tr>
<td>Colour choice</td>
<td align="center">Yes</td>
</tr>
<tr>
<td>Size choice</td>
<td align="center">No</td>
</tr>
<tr>
<td>Layer management</td>
<td align="center">No</td>
</tr>
<tr>
<td>Change layer position (up/down)</td>
<td align="center">No</td>
</tr>
<tr>
<td>Rename layer</td>
<td align="center">No</td>
</tr>
<tr>
<td>Delete layer</td>
<td align="center">No</td>
</tr>
<tr>
<td>Custom .paint file extension</td>
<td align="center">No</td>
</tr>
<tr>
<td>Save .paint files</td>
<td align="center">No</td>
</tr>
<tr>
<td>Load .paint files</td>
<td align="center">No</td>
</tr>
<tr>
<td>Clear Canvas</td>
<td align="center">No</td>
</tr>
<tr>
<td>Fill Canvas</td>
<td align="center">No</td>
</tr>
<tr>
<td>Flood Fill Algorithm</td>