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<script src="./softbody_1/dist/output.js"></script>
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<article>
  <h1>Springs</h1>
  <section>
	<p>
    It is time to investigate what it means to have a deformation in our physics system. By deformation, I mean that the
    vertices of our shapes are no longer fixed to one point within the model. We will begin with what I believe
    by investigating the most common of all deformations: a weight attached to a spring in two dimensions.
	</p>
  </section>
  <section>
	<h2></h2>
  </section>
  <section>
	<h2>
	  Undamped Springs
	</h2>
    <p>
      <span class='widget_container'>
        <label for='undamped_spring_length'>Spring Length (m)</label>
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      </span>
      
      <span class='widget_container'>
        <label for='undamped_start_position'>Start Displacement (m)</label>
        <input type='range' id='undamped_start_position' min='-150' max='150' value='0'/>
        <span></span>
      </span>

      <span class='widget_container'>
        <label for='undamped_spring_constant'>Spring Constant (N / m)</label>
        <input type='range' id='undamped_spring_constant' min='0.1' max='20.0' value='1.0' step='0.1'/>
        <span></span>
      </span>

      <span class='widget_container'>
        <label for='undamped_spring_mass'>Mass (kg)</label>
        <input type='range' id='undamped_spring_mass' min='0.1' max='10.0' value='1.0' step='0.1'/>
        <span></span>
      </span>
      
    </p>
    <div class="opengl_canvas_container">
      <canvas id="gl_canvas_undamped" width="800" height="600"></canvas>
      <button id="gl_canvas_play_undamped" class="play_button">
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      <button id="gl_canvas_stop_undamped" class="stop_button">
        Stop
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  </section>

  <section>
	<h2>
	  Damped Springs
	</h2>
    <p>
      <span class='widget_container'>
        <label for='undamped_spring_length'>Spring Length (m)</label>
        <input type='range' id='damped_spring_length' min="50" max="300" value="150"/>
        <span></span>
      </span>
      
      <span class='widget_container'>
        <label for='undamped_start_position'>Start Displacement (m)</label>
        <input type='range' id='damped_start_position' min='-150' max='150' value='0'/>
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      <span class='widget_container'>
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        <input type='range' id='damped_spring_constant' min='0.1' max='20.0' value='1.0' step='0.1'/>
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        <input type='range' id='damped_spring_mass' min='0.1' max='10.0' value='1.0' step='0.1'/>
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        Stop
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  <footer id='references'>
    <h2>References</h2>
    <ul>
      <li>
        <a href='https://www.youtube.com/watch?v=Z52emur7Rko'>Wonderful Undamped Resource</a>
      </li>
      <li>
        <a href='https://www.youtube.com/watch?v=CTd1uVq5-l8'>Wonderful Damped Resource</a>
      </li>
      <li>
        <a href='http://ambrsoft.com/CalcPhysics/Spring/SpringData.htm'>List of Equations for Spring Motion</a>
      </li>
      <li>
        <a href='https://www.ryanjuckett.com/damped-springs/'>Ryan Juckett's Explanation of Damped Springs</a>
      </li>
    </ul>
  </footer>
</article>