# HG changeset patch
# User Simon Heath <icefox@dreamquest.io>
# Date 1715865695 14400
#      Thu May 16 09:21:35 2024 -0400
# Node ID c4f86eecbdfe3aece959623b7f524db15ead7b2d
# Parent  4548959d3a2fc9fe21152602d53b38967b449666
Playin' with Matrex

diff --git a/apps/tfex/lib/tf.ex b/apps/tfex/lib/tf.ex
new file mode 100644
--- /dev/null
+++ b/apps/tfex/lib/tf.ex
@@ -0,0 +1,4 @@
+defmodule Tfex.Tf do
+  @moduledoc "Struct for a transform, defaulting to Local Tangent Plane"
+  defstruct id: :ltp, transform: Tfex.id()
+end
diff --git a/apps/tfex/lib/tfex.ex b/apps/tfex/lib/tfex.ex
new file mode 100644
--- /dev/null
+++ b/apps/tfex/lib/tfex.ex
@@ -0,0 +1,37 @@
+defmodule Tfex do
+  @moduledoc """
+  Documentation for `Tfex`.
+  """
+
+  @doc """
+  Hello world.
+
+  ## Examples
+
+      iex> Tfex.hello()
+      :world
+
+  """
+  def hello do
+    :world
+  end
+
+  @doc "Return vector3 for position"
+  def vec3(x,y,z) do
+    Matrex.new([[x,y,z]])
+  end
+
+  @doc "Return identity transform matrix."
+  def id() do
+    Matrex.eye(3)
+  end
+
+  @doc "Create a translation matrix from the vector v"
+  def translation(v) do
+  end
+
+  @doc "Create a rotation matrix from the vector v -- oh fucking hell quaternions"
+  def rotation(v) do
+  end
+
+end