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% \iffalse
% --------------------------------------------------------------------
%<*hex>
% \fi
%
% \subsubsection{Terrain}
% \label{sec:impl:hex:terrain}
%
% With the above main routine for making hexes, we turn to decorating
% a hex with a terrain.
%
% \begin{HexKey*}{hex/terrain/image,
% hex/terrain/pic,
% hex/terrain/code,
% hex/terrain/clip}
%
% We make the namespace \spec{/hex/terrain} to hold the
% specific terrain keys. Keys used by terrain identifiers are
%
% \begin{tabular}{|l|p{.7\linewidth}|}
% \hline
% \rowcolor{headbg}
% {\color{headfg}\textbf{Name}}
% & {\color{headfg}\textbf{Description}}\\
% \hline
% \spec{image} & Terrain tile image\\
% \spec{pic} & Terrain \TikZ{} \spec{pic}ture\\
% \spec{code} & Arbitary \TikZ{} code\\
% \spec{clip} & \TikZ{} path to clip terrain\\
% \hline
% \end{tabular}
%
% Now, we have the keys we'll need for selecting the terrain. These
% live in the namespace \spec{/hex/terrain}, and we can select
% between \spec{pic}tures or \spec{image}s (external graphics files)
% for making the terrain. We define some short hands to easily
% select the common terrains.
%
% \begin{macrocode}
\newif\if@hex@t@rot\@hex@t@rotfalse%
\tikzset{%
/hex/terrain/.search also={/tikz},%
/hex/terrain/.cd,%
pic/.store in=\hex@t@pic,%
image/.store in=\hex@t@image,%
code/.store in=\hex@t@code,%
clip/.store in=\hex@t@clip,%
random rotation/.is if=@hex@t@rot,
rotate/.store in=\hex@t@s@angle,
pic/.default=,
image/.default=,
code/.default=,
clip/.default=,
rotate/.default=,
}
\iffalse
\tikzset{
/hex/terrain/.cd,%
beach/.style={pic=hex/terrain/beach},
fields/.style={pic=hex/terrain/fields},
speckle/.style={pic=hex/terrain/speckle},
light woods/.style={pic=hex/terrain/light woods},
woods/.style={pic=hex/terrain/woods},
swamp/.style={pic=hex/terrain/swamp},
rough/.style={pic=hex/terrain/rough},
mountains/.style={pic=hex/terrain/mountains},
village/.style={pic=hex/terrain/village},
town/.style={pic=hex/terrain/town},
city/.style={pic=hex/terrain/city},
}
\else
\tikzset{
/hex/terrain/.cd,%
beach/.style={image=wargame.beach},
fields/.style={image=wargame.fields},
speckle/.style={image=wargame.speckle},
light woods/.style={image=wargame.light_woods},
woods/.style={image=wargame.woods},
swamp/.style={image=wargame.swamp},
rough/.style={image=wargame.rough},
mountains/.style={image=wargame.mountains},
village/.style={image=wargame.village},
town/.style={image=wargame.town},
city/.style={image=wargame.city},
}
\fi
% \end{macrocode}
% \end{HexKey*}
%
%
% Before we go on, we define the macro that actually generates the
% terrain of a hex.
%
% \begin{Macro}{\hex@do@terrain}
% If we do have a terrain specified, we start a new scope, this time
% to clip the terrain by the clipping path specified by
% \spec{hex=\{terrain=\{clip=...\}\}}. The first thing into the new
% scope is to process the keys specified in
% \spec{hex=\{terrain=...\}}. This will set the terrain and the
% clipping of the terrain.
%
% \begin{macrocode}
\def\hex@do@terrain{%
\hex@dbg{5}{Terrain: \meaning\hex@terrain}%
\edef\hex@t@tmp{[/hex/terrain/.cd,\hex@terrain]}%
\expandafter\scope\hex@t@tmp% Scope for terrain clipping.
\hex@dbg{5}{Terrain:
^^J pic: \meaning\hex@t@pic
^^J image: \meaning\hex@t@image
^^J code: \meaning\hex@t@code
^^J clip: \meaning\hex@t@clip}
% \end{macrocode}
%
% We check to see if we have any clipping \spec{pic}tures. If so, we
% process these in turn and append the soft path to a macro. Once
% this is done, we use the soft path as a clipping path for the rest
% of the (terrain) scope.
%
% \begin{macrocode}
\@ifundefined{hex@t@clip}{\let\hex@t@clip\empty}{}
\ifx\hex@t@clip\empty\else%
\edef\hex@t@cc{\hex@t@clip}%
\def\hex@t@c{}
\foreach \c in \hex@t@cc{%
\hex@dbg{5}{Clipping to `\c'}
\expandafter\wg@pic\c\@endwg@pic {}{\wg@tmpa,\wg@tmpb}{%
save path=\hex@t@tmp}%
\wg@addto@macro\hex@t@c\hex@t@tmp % Append to clippping
}%
\pgfsyssoftpath@setcurrentpath{\hex@t@c}% Set path
\clip;% Clip to the path
\fi % End of clipping terrain
% \end{macrocode}
%
% We're new ready to make the terrain. First, we check to see if the
% relevant storage macros are undefined and if so, \cs{let} them to
% \cs{empty} so that we can deal more easily with the various cases.
%
% \begin{macrocode}
%% Now switch between how to draw the terrain. If some of the
%% macros are undefined, define them to be empty
\@ifundefined{hex@t@pic}{\let\hex@t@pic\empty}{}
\@ifundefined{hex@t@image}{\let\hex@t@image\empty}{}
\@ifundefined{hex@t@code}{\let\hex@t@code\empty}{}
\@ifundefined{hex@t@code}{\let\hex@t@code\empty}{}
% \end{macrocode}
%
% Possible make rotation. We define a scope and rotate within that.
%
% \begin{macrocode}
\def\hex@t@angle{0}%
\if@hex@t@rot%
\pgfmathrandominteger{\hex@t@angle}{0}{5}
\pgfmathparse{int(60*\hex@t@angle)}\edef\hex@t@angle{\pgfmathresult}%
\else%
\@ifundefined{hex@t@s@angle}{}{
\ifx\hex@t@s@angle\@empty%
\else%
\edef\hex@t@angle{\hex@t@s@angle}%
\fi}%
\fi%
\hex@dbg{5}{Will rotate terrain by `\hex@t@angle'}%
% \end{macrocode}
%
% If we have specified code for the terrain, then execute that.
%
% \begin{macrocode}
\scope[rotate=\hex@t@angle]%
\ifx\hex@t@code\empty\else\hex@t@code\fi%
\endscope% End rotate code
% \end{macrocode}
% First we check if we have not got terrain images, but terrain
% pictures. If we have that, we process these in turn. Note, the
% user can give options to each terrain picture by preceding the
% \spec{pic}ture name with \oarg{options}.
%
% \begin{macrocode}
% If we have no image, check if we have pictures.
\ifx\hex@t@image\empty%
\hex@dbg{8}{No terrain images}%
\ifx\hex@t@pic\empty\else%
% We have pictures
\hex@dbg{5}{Terrain pictures}%
\pgfpointorigin\wg@tmpa=\pgf@x\wg@tmpb=\pgf@y%
\foreach \i in \hex@t@pic{%
\wg@pic@all{\i}{}{\the\wg@tmpa,\the\wg@tmpb}{%
rotate=\hex@t@angle,
transform shape}}%
\fi% We have pictures.
% \end{macrocode}
%
%
% If the user specified images rather than \spec{pic}tures, then we
% process these in turn. Again, the user can specify options to each
% terrain image by preceding the image file name with \oarg{options}.
%
% \begin{macrocode}
\else % We have images
\hex@dbg{5}{Terrain images}%
\pgfpointorigin\wg@tmpa=\pgf@x\wg@tmpb=\pgf@y%
\foreach \i in \hex@t@image{%
\hex@dbg{10}{Terrain image: `\meaning\i'}
\expandafter\wg@node{%
\includegraphics[width=2cm]{\i}}\@endwg@node %
{}{\wg@tmpa,\wg@tmpb}{%
rotate=\hex@t@angle,%
shape=rectangle,%
anchor=center,%
transform shape,%
draw=none}%
}
\fi%
\endscope% End of terrain scope
}% End of terrain
% \end{macrocode}
% \end{Macro}
%
%
%
%
%
% Next, we define some example clippings of the terrain images.
% Specifcally, we make clippings to sextants. We do this by first
% defining a macro.
%
% \begin{Macro}{\hex@make@sextants}
%
% When executed this macro will generate some paths that will clip
% to sextants. The first argument is the inner radius of the
% sextant and the second argument is the (possible empty) prefix to
% put in front of the \spec{sextant} name.
%
% \begin{macrocode}
\def\hex@x@r{.7}
\def\hex@make@sextants#1#2{%
\tikzset{%
pics/hex/#2sextant/.is choice,
pics/hex/#2sextant/north east/.style={
code={
\path[pic actions]( 0:1)--( 60:1)--( 60:#1)--( 0:#1)--cycle;}},
pics/hex/#2sextant/north/.style={
code={
\path[pic actions]( 60:1)--(120:1)--(120:#1)--( 60:#1)--cycle;}},
pics/hex/#2sextant/north west/.style={
code={
\path[pic actions](120:1)--(180:1)--(180:#1)--(120:#1)--cycle;}},
pics/hex/#2sextant/south west/.style={
code={
\path[pic actions](180:1)--(240:1)--(240:#1)--(180:#1)--cycle;}},
pics/hex/#2sextant/south/.style={
code={
\path[pic actions](240:1)--(300:1)--(300:#1)--(240:#1)--cycle;}},
pics/hex/#2sextant/south east/.style={
code={
\path[pic actions](300:1)--(360:1)--(360:#1)--(300:#1)--cycle;}},
pics/hex/#2sextant/center/.style={
code={
\path[pic actions]
(0:#1)--
(60:#1)--
(120:#1)--
(180:#1)--
(240:#1)--
(300:#1)--cycle;}},
pics/hex/#2sextant/NE/.style=hex/#2sextant/north east,
pics/hex/#2sextant/NE/.style=hex/#2sextant/north east,
pics/hex/#2sextant/N/.style=hex/#2sextant/north,
pics/hex/#2sextant/NW/.style=hex/#2sextant/north west,
pics/hex/#2sextant/SW/.style=hex/#2sextant/south west,
pics/hex/#2sextant/S/.style=hex/#2sextant/south,
pics/hex/#2sextant/SE/.style=hex/#2sextant/south east,
pics/hex/#2sextant/C/.style=hex/#2sextant/center,
}%
}
% \end{macrocode}
% \end{Macro}
%
% \begin{macrocode}
\hex@make@sextants{.7}{}
\hex@make@sextants{.3}{large }
\hex@make@sextants{0}{full }
% \end{macrocode}
% \iffalse
%</hex>
% --------------------------------------------------------------------
% \fi
|
