Starting to work on implementation

src/introduction/<

@@ -1,62 +0,0 @@
-\section{What is a 3D model?}
-
-Before talking about 3D streaming, we need to define what is a 3D model and how it is rendered.
-
-\subsection{Content of a 3D model}
-
-A 3D model consists in 3D points (that are called \emph{vertices}), texture coordinates, nomals, faces, materials and textures.
-The Wavefront OBJ is probably the best to give an introduction to 3D models since it describes all these elements.
-A 3D model encoded in the OBJ format typically consists in two files: the materials file (\texttt{.mtl}) and the object file (\texttt{.obj}).
-
-\paragraph{}
-The materials file declare all the materials that the object file will reference.
-Each material has a name, ambient, diffuse and specular colors, as well as texture maps.
-A simple material file is visible on Listing~\ref{i:mtl}.
-
-\paragraph{}
-The object file declare the 3D content of the objects.
-It declares vertices, texture coordinates and normals from coordinates (e.g.\ \texttt{v 1.0 2.0 3.0} for a vertex, \texttt{vt 1.0 2.0} for a texture coordinate, \texttt{vn 1.0 2.0 3.0} for a normal).
-These elements are numbered starting from 1.
-Faces are declared by using the indices of these elements. A face is a polygon with any number of vertices and can be declared in multiple manners:
-
-\begin{itemize}
-    \item \texttt{f 1 2 3} defines a triangle face that joins the first, the second and the third vertex declared;
-    \item \texttt{f 1/1 2/3 3/4} defines a triangle similar but with texture coordinates, the first texture coordinate is associated to the first vertex, the third texture coordinate is associated to the second vertex, and the fourth texture coordinate is associated with the third vertex;
-    \item \texttt{f 1//1 2//3 3//4} defines a triangle similar but using normal instead of texture coordinates;
-    \item \texttt{f 1/1/1 2/3/3 3/4/4} defines a triangle with both texture coordinates and normals.
-\end{itemize}
-
-It can include materials from a material file (\texttt{mtllib path.mtl}) and use apply it to faces.
-A material is applied by using the \texttt{usemtl} keyword, followed by the name of the material to use.
-The faces declared after a \texttt{usemtl} are painted using the material in question.
-An example of object file is visible on Listing~\ref{i:obj}.
-
-\begin{figure}[th]
-    \centering
-    \begin{subfigure}[b]{0.4\textwidth}
-        \lstinputlisting[
-            language=XML,
-            caption={An object file describing a cube},
-            label=i:obj,
-        ]{assets/introduction/cube.obj}
-    \end{subfigure}\quad%
-    \begin{subfigure}[b]{0.4\textwidth}
-        \vspace{-0.5cm}
-        \lstinputlisting[
-            language=XML,
-            caption={A material file describing a material},
-            label=i:mtl,
-            emph={%
-                newmtl,
-                Ka,
-                Kd,
-                Ks,
-                map_Ka
-            }
-        ]{assets/introduction/materials.mtl}
-        \vspace{0.2cm}
-        \includegraphics[width=\textwidth]{assets/introduction/cube.png}
-        \caption*{A render of the cube}
-    \end{subfigure}
-    \caption{The OBJ representation of a cube and its render\label{i:cube}}
-\end{figure}