%% physketch.legacy.sty
%% The interface of design.sty, the predecessor of physketch, for old
%% drawings.  It cannot be combined with the other parts of physketch.
%%
%% Copyright (C) 2024-2026 Azamat Gimaev
%% This work may be distributed and/or modified under the conditions of
%% the LaTeX Project Public License, either version 1.3c of this license
%% or (at your option) any later version.
\NeedsTeXFormat{LaTeX2e}[2020/10/01]
\ProvidesPackage{physketch.legacy}
  [2026/10/20 v0.1.0 physketch: design.sty interface]

\@ifpackageloaded{physketch.general}{%
  \PackageError{physketch.legacy}
    {physketch.legacy cannot be used together with physketch}
    {physketch.legacy reproduces the old design.sty and redefines styles\MessageBreak
     of physketch. Load either physketch (or its parts) or\MessageBreak
     physketch.legacy, not both.}%
  \let\physketch@stop\endinput
}{\let\physketch@stop\relax}
\physketch@stop

\RequirePackage{tikz}
\RequirePackage{xparse}
\RequirePackage{circuitikz}
\ctikzset{american, resistor=european, inductor=american}
\usetikzlibrary{
  circuits,
  arrows,
  decorations,
  decorations.pathreplacing,
  decorations.pathmorphing,
  decorations.markings,
  calc,
  patterns,
  patterns.meta,
}

\tikzset{
  arrowstyle/.style = {scale=1},
  directed/.style = {postaction={decorate, decoration={markings,
    mark=at position .6 with {\arrow[arrowstyle]{stealth}}}}},
  reverse directed/.style = {postaction={decorate, decoration={markings,
    mark=at position .4 with {\arrowreversed[arrowstyle]{stealth}}}}},
  ground/.style     = {pattern={Lines[angle=45, distance=0.074cm]}, fill, draw=none},
  groundPerp/.style = {pattern={Lines[angle=-45, distance=0.074cm]}, fill, draw=none},
  groundHor/.style  = {pattern={Lines[angle=0, distance=0.074cm]}, fill, draw=none},
  screen/.style     = {pattern={Lines[angle=45, distance=0.12cm]}, fill, draw=none},
  mirrorLeft/.style   = {shade, draw=none, left color=gray!80, right color=gray!10},
  mirrorRight/.style  = {shade, draw=none, right color=gray!80, left color=gray!10},
  mirrorTop/.style    = {shade, draw=none, top color=gray!80, bottom color=gray!10},
  mirrorBottom/.style = {shade, draw=none, bottom color=gray!80, top color=gray!10},
  mirror/.style       = {draw=none, fill=gray!40},
}

\definecolor{titleColor}{rgb}{0.439,0.188,0.627}
\definecolor{glassColor}{HTML}{FFF2B2}
\definecolor{waterColor}{HTML}{9ACEFF}
\definecolor{gasColor}{HTML}{BBFFAB}
\definecolor{glassRedColor}{HTML}{E57860}
\definecolor{oilColor}{HTML}{DAC745}
\definecolor{iceColor}{HTML}{D8E8F7}

\tikzset{
  glass/.style    = {fill=glassColor, fill opacity=0.5},
  water/.style    = {fill=waterColor, fill opacity=0.5},
  gas/.style      = {fill=gasColor, fill opacity=0.5},
  glassRed/.style = {fill=glassRedColor, fill opacity=0.5},
  oil/.style      = {fill=oilColor, fill opacity=0.7},
  ice/.style      = {fill=iceColor, fill opacity=0.7},
}

\newcommand\lightsource[1]{%
  \begin{scope}[shift={#1}]
    \foreach \i in {0,30,...,359}
      \draw[ultra thin, rotate=\i] (0,0) -- (0.15,0);
    \draw[fill=white] (0,0) circle (0.05);
  \end{scope}}

\NewDocumentCommand\dist{O{0.6}O{0.5}mmmmm}{%
  \begin{scope}
    \draw[shift={#3}, rotate=#5, ultra thin] (0,0) -- ++(#1,0);
    \draw[shift={#4}, rotate=#5, ultra thin] (0,0) -- ++(#1,0);
    \path[shift={#3}, rotate=#5] (#2,0) coordinate (a);
    \path[shift={#4}, rotate=#5] (#2,0) coordinate (b);
    \draw[ultra thin, <->] (a) -- (b) node[pos=0.5, #6] {#7};
  \end{scope}}

\NewDocumentCommand\sdist{O{0.6}O{0.5}mmmmm}{%
  \begin{scope}
    \draw[shift={#3}, rotate=#5, ultra thin] (0,0) -- ++(#1,0);
    \draw[shift={#4}, rotate=#5, ultra thin] (0,0) -- ++(#1,0);
    \path[shift={#3}, rotate=#5] (#2,0) coordinate (a);
    \path[shift={#3}, rotate=#5] (#2,0.2) coordinate (A);
    \path[shift={#4}, rotate=#5] (#2,0) coordinate (b);
    \path[shift={#4}, rotate=#5] (#2,-0.2) coordinate (B);
    \draw[ultra thin, <-] (a) -- (A);
    \draw[ultra thin, <-] (b) -- (B);
    \path[rotate=#5] ($(a)!0.5!(b)$) coordinate (c);
    \node[#6] at (c) {#7};
  \end{scope}}

\endinput