index.html

---
# Feel free to add content and custom Front Matter to this file.
# To modify the layout, see https://jekyllrb.com/docs/themes/#overriding-theme-defaults

layout: fullscreen
class: homepage
---

{% assign ordered_pages = site.lessons | sort:"lesson_number" %}
<div class="lessons">
{%- for lesson in ordered_pages -%}
<a class="lesson-picker" href="{{ lesson.url }}">
    <div class="wrapper d-flex align-items-center">
        <div class="mr-auto">
            <span>Lesson {{ lesson.lesson_number }}</span>
            <strong>{{ lesson.title }}</strong>
        </div>
        <img src="/assets/images/lessons/{{ lesson.title|slugify }}.png"/>
    </div>
</a>
{%- endfor -%}
</div>

<div class="wrapper">
    <h1>Examples</h1>
    <p>Use these example Processing programs to learn more about processing</p>
    <div class="d-flex justify-content-between">
    {% assign items_grouped = site.examples | group_by: 'difficulty' %}
    {% for group in items_grouped %}
    <div>
        <h3>{{group.name|capitalize}}</h3>
        {% for example in group.items %}
        <div>
            <a href="{{example.url }}">{{ example.title }}</a>
        </div>
        {% endfor %}
    </div>
    {% endfor %}
    </div>

    <h1>Reference</h1>
    <p>Learn more about the functions in Processing</p>

    {% assign items_grouped = site.references | group_by: 'category' %}
    {% for group in items_grouped %}
        <h3>{{group.name}}</h3>
        <table>
            {% for reference in group.items %}
            <tr>
                <td><a href="{{ reference.url }}">{{ reference.title }}</a></td>
                <td>{{ reference.summary }}</td>
            </tr>
            {% endfor %}
        </table>
    {% endfor %}

    <h1>Books</h1> <p>Download a PDF copy of the lessons</p>
    <div class="books">
        <div>
            <a class="book" href="/assets/pdf/Lessons.pdf">
                <img src="/assets/images/book.png"/>
                All lessons (PDF)
            </a> 
            <a href="/lessons/print">(HTML)</a>
        </div>
        <div>
            <a class="book" href="/assets/pdf/InstructorWorksheet.pdf">
                <img src="/assets/images/instructors-worksheet.png"/>
                Instructor worksheet (PDF)
            </a> 
            <a href="/lessons/worksheet">(HTML)</a>
        </div>
    </div>
</div>
<script type="text/javascript">
    document.querySelectorAll('.lesson-picker').forEach(function(el) {
        el.addEventListener('click', function(e) {
            e.currentTarget.classList.add('active');
        });
    });
</script>