title: Understanding ARKit World Transform Matrices
body: <p>In <code>ARKit</code>, when I perform a hit-test, I get back an instance of <code>ARHitTestResult</code>. One of the properties of this is <code>worldTransform</code>, which I understand contains a <code>4</code>x<code>4</code> transformation matrix of the position of the object – <code>simd_float4x4</code>.</p>
  
  <p>As someone who is very unfamiliar with linear algebra and 3D graphics, how would I edit this matrix to, say, increase its <code>y</code> coordinate by <code>0.05</code>?</p>
  
  <p>If there is a blog post or something I could look at that would help me wrap my head around this, please let me know. I am not sure what terms I should be googling.</p>
  
  <p>Sorry if my question is full of misunderstandings! As you can probably tell, I am not too familiar with these concepts.</p>
  
  <p>Thank you to anyone who helps.</p>