Shaping an image like a circle

A circle shape is a neat option for portrait photos or for images arranged in a graph or a tree.

How to do it...

Like in the previous recipe, we will define a TikZ macro for this purpose. Let's take a look at the following steps:

1. Load the tikz package:

   \usepackage{tikz}

2. Define a macro so we can use it often:

   \newcommand{\roundpic}[4][]{
     \tikz\node [circle, minimum width = #2,
       path picture = {
         \node [#1] at (path picture bounding box.center) {
           \includegraphics[width=#3]{#4}};
       }] {};}

3. Use the new macro within your document to include an image:

   \roundpic[xshift=-1cm,yshift=-2.6cm]{5.8cm}{9cm}{filename}

4. Compile the document. When I used the photo of my dog, I got the following image:

   

How it works...

Refer to the previous recipe to understand the TikZ node construction with the path picture command. This time, we used a circle for the outer node, so our image got cropped in to a circular shape. We used four arguments. The first optional argument can...