How to include graphics in minimal code?

Question

[UPDATE]

I'm sorry, if my question is less clear. I mean is how to simplify the writing of syntax in main.tex to display images with the same settings,

    \begin{figure}[ht]
    \centering
    \includegraphics{Pictures/pic1.png}
    \caption{Picture 1}
    \label{fig:pic1}
    \end{figure}

with just write, maybe,

    \includegraphics[caption,label]{pic1.png}

[ORIGINAL QUESTION]

I am writing an ebook that contains some of graphics. Some of them generated by code (using TikZ), for example pic1.tex. I think it will be easier to edit if they save in a separated file. I drop all graphics in a folder named Pictures. I named all graphics with the same prefix pic, for example pic2.png, pic3.jpg, etc.

How to include them with a minimal code, say:

    \include{pic1.tex}

Than

    \begin{figure}[h]
    \centering
    \includegraphics{Pictures/pic1.tex}
    \caption{Picture 1}
    \label{fig:pic1}
    \end{figure}

Answer 1

If you want to be a best practitioner, consider the following. Let your files and folders hierarchy be as follows.

• main.tex in Project.
• rules.jpg is in SubDir.
• behaviors.jpg is in ParentSiblingDir.

% main.tex
\documentclass{article}
\usepackage{graphicx}
\graphicspath{{SubDir/}{../ParentSiblingDir/}}

\newcommand\Insert[5][hbtp]{%
    \begin{figure}[#1]
        \centering
        \includegraphics[#2]{#3}
        \caption{#4}
        \label{#5}
    \end{figure}}


\begin{document}
\Insert{scale=.2}{behaviors}{Students' behaviors}{fig:behaviors}
\Insert{scale=.2}{rules}{Father's rules}{fig:rules}
\end{document}

Remarks:

• Use \graphicspath to register folders (directories) from which the images will be included or imported. The format is \graphicspath{{<relative path1>}{<relative path2>}{<relative path...>}}. Each path must be followed by /.

• The remaining code should be clear enough!