title: how to create a jpeg picture with a triangle of 3 specific point and specific color
body: <p>Now I'm trying to create a jpeg picture with a triangle of 3 specific point and specific color .</p>
  
  <p>like this:<br>
  a jpeg picture (256 * 256)
  I got three points and a specific color
  draw the triangle filled with the color to the jpeg </p>
  
  <p>I'm using python2 with pillow(forked by PIL)</p>