list_detector.ex

defmodule Collidex.ListDetector do
  @moduledoc """
  Functions responsible for testing lists of geometric primitives for
  collisions.
  """

  @doc """
  Given two lists `list1` and `list2`, will return a list of collisions
  found between any shapes in list1 and any shapes in list2.
  """
  def find_collisions(list_1, list_2, method \\ :accurate )
  def find_collisions(list_1, list_2, method) do
    for shape_1 <- list_1,
        shape_2 <- list_2,
        { :collision, vector } = Collidex.Detector.collision?(shape_1, shape_2, method) do
      { shape_1, shape_2, vector }
    end
  end
end