title: Transfer coordinates from one triangle to another triangle
body: <p>I have two triangles , which can be in any sizes. The problem is that, how I can transfer coordinates from one triangle to another? I know both of triangle position in coordinate system and yes, they both are in one system. </p>
  
  <p>Basically, i have point in triangle1 and I need to transfer it in triangle2. </p>
  
  <p>Reading some posts, I found out that I could be calculated using <strong>affine transformation matrix</strong>, but I didn't undestand how to solve this with affine transformation matrix.</p>
  
  <p>Thank you for any help.</p>