Change turtle size keeping lower point position constant <p>I have distributed turtles on the world having size <code>x</code> and I wish to increase their size to <code>y</code> but the I want to keep their location of their lower further point same (Check figure below). How can one accomplish this? </p> <p>EDIT: I wished to write a procedure that could be applicable for all turtle heading, that is if the turtle is heading 0 or 90 or 45. Direct math in such case could be complicated. <img src="https://i.stack.imgur.com/foaIr.png" alt="Figure"></p>