dist()

The `dist()` function calculates the distance between two points in a 2D space, which is essential for determining how far apart objects are from one another. Creative coders use it to create interactions and effects based on proximity, such as detecting mouse clicks on shapes or simulating physical behaviors like flocking or particle systems. For instance, in an interactive color mixing tool, `dist()` can help determine if the user's mouse is close enough to a colored circle to blend colors together.