title: Drawing lines with C++ and SDL
body: <p>I want to create a line with SDL, i know there is a code called <code>SDL_RenderDrawLine</code>. But my question probably can not be solved with SDL, because the line that i want to create is lets say 1 m length, there i can say that 100 pixels are 1 meter length, but what will happen if after that, i want to create 0.001 m length?</p>
  <p>How to tackle this? because SDL only accepts <code>int</code> due to the pixels, in other words there is not 0.1 pixels or half pixel.</p>
  <p>if that can not be solved using SDL how can i do it?</p>