# adapted from Tresviso (SVN) which was adapted from SpeleoPhilippines (GitHub), and bits taken from Bruce Mutton, Tarquin WJ etc. under Creative Commons Share Alike

### index of file options from _layouts.mp
## include "copy xxx" in thconfig or from within another layout
  
#copy custom_flowstone
#copy custom_water_blue
#copy custom_legend_large_format_5U
#copy custom_scalebar 
#copy custom_continuations
#copy custom_border
#copy custom_standard_settings
#copy custom_rigging_topos
#copy custom_boxed_labels
#copy custom_entrance


#############################################################################################################################
layout custom_standard_settings

##Ideally used for large scale Plan pdfs, but can call and then override in thconfig for smaller ones

copy custom_border
copy custom_lines
copy custom_scalebar
copy custom_boxed_labels
#copy custom_continuations
#copy custom_grid
copy custom_entrance
color-legend off
symbol-colour area water [25 50 100]
symbol-colour point water-flow [25 50 100]
symbol-colour line water-flow [25 50 100]
symbol-colour area sump [10 10 100]
symbol-colour point station [100 0 0]
symbol-colour line rope  [100 0 0] #make rope red
symbol-colour point rope  [100 0 0] #make rope red
transparency on
grid top
symbol-set BCRA
statistics topo off         # hiding individual survey members, replaced with Black Sheep Diggers in the map-comment below

map-comment "Plan<br><br>Black Sheep Diggers<br><br>BCRA Grade 5D (except where stated)<br>Data: cave-registry.org.uk/svn/NorthernEngland/Nidderdale"
doc-author   "Black Sheep Diggers"
doc-keywords "Goyden Pot, New Goyden Pot, Nidderdale, Thrope Pot, Manchester Hole"
doc-subject  "Goyden Cave System, Nidderdale, United Kingdom 2024"
doc-title    "Goyden Cave System, Nidderdale, United Kingdom 2024"

endlayout
#############################################################################################################################

layout custom_rigging_topos

symbol-colour line rope  [100 0 0] #make rope red
symbol-colour point rope  [100 0 0] #make rope red

###Adding custom styled labels at any point/linepoint
code metapost
  vardef create_styled_label (expr plaintext,P,R,S,A,defaultstyle)=
    save textsize, style, thetext;
    string textsize;
    if S = 0.5:
      textsize:="\thtinysize";
    elseif S = 0.7:
      textsize:="\thsmallsize";
    elseif S = 1.4:
      textsize:="\thlargesize";
    elseif S = 2:
      textsize:="\thhugesize";
    else: % normal is 1
      textsize:="\thnormalsize";
    fi;
    if known ATTR_labelstyle:
      style:=scantokens(ATTR_labelstyle);
    else:
      style:=defaultstyle;
    fi;
    picture thetext;
    thetext:=thTEX("\thframed {" & textsize & " \thfb " & plaintext & "}");
    if A = (-1,1):
      p_label.ulft(thetext,P,R,style);
    elseif A = (0,1):
      p_label.top(thetext,P,R,style);
    elseif A = (1,1):
      p_label.urt(thetext,P,R,style);
    elseif A = (-1,0):
      p_label.lft(thetext,P,R,style);
    elseif A = (1,0):
      p_label.rt(thetext,P,R,style);
    elseif A = (-1,-1):
      p_label.llft(thetext,P,R,style);
    elseif A = (0,-1):
      p_label.bot(thetext,P,R,style);
    elseif A = (1,-1):
      p_label.lrt(thetext,P,R,style);
    else:
      p_label(thetext,P,R,style);
    fi;
  enddef;
endcode

#number within circle to use text en "point u:ropelength" "rope length" set the text of the label, use “-attr text 17” in its options.
code metapost
  def p_u_ropelength (expr P,R,S,A) =
    T:=identity shifted P;
    U:=(0,0);
    if known ATTR_text:
      % approximate size (varies with proportional font)
      U:=(S*u*(length ATTR_text)/4,S*u*(length ATTR_text)/4);
      create_styled_label(ATTR_text,P,R,S,A,p_label_mode_passageheight);
    fi;
  enddef;
  initsymbol("p_u_ropelength");
  def p_u_ropelength_legend =
    begingroup;
      save ATTR_text;
      string ATTR_text;
      ATTR_text:="12";
      p_u_ropelength((.5,.5) inscale,0,1,(0,0));
    endgroup;
  enddef;
endcode

#deviations
code metapost
  def l_u_deviation (expr P) =
    begingroup;
      save ellipse;
      T:=identity;
      pickup PenC;
      path ellipse;
      ellipse:=fullcircle xscaled (.5u) yscaled (.25u) shifted (point (length P) of P);
      thdraw P cutafter ellipse;
      draw ellipse;
    endgroup;
  enddef;
  initsymbol("l_u_deviation");
  def l_u_deviation_legend =
    l_u_deviation(((.1,.5)--(.8,.5)) inscale);
  enddef;
endcode

endlayout


#############################################################################################################################
layout custom_flowstone
symbol-assign area flowstone TEST

code metapost
initsymbol ("a_flowstone_TEST");
beginpattern(pattern_flowstone_TEST);
    pickup PenC;​
    p:=(-.25u,0){dir -60} .. {dir 60}(0.25u,0);​
    draw p;​
    draw p shifted (0.35u,0.4u);​
    patternxstep(0.9u);​
    patternystep(0.30u);​
endpattern;

def a_flowstone_TEST (expr Path) =
  T:=identity;​
  thclean Path;​
  thfill Path withpattern pattern_flowstone_TEST;​
enddef;

endcode
endlayout

#############################################################################################################################
layout custom_entrance
#Change entrance to a theta symbol (Dave Clucas 2014)

code metapost
def p_entrance_MY (expr pos,theta,sc,al)=
  U:=(.2u,.5u);
  T:=identity aligned al rotated theta scaled sc shifted pos;
  path p;
  p = (-.3u,-.25u) -- (-.2u,-.25u){dir 135} .. (0u, .25u) .. {dir 225}(.2u,-.25u) -- (.3u,-.25u);
  thdraw p withpen PenA;
  thdraw unitsquare scaled u shifted (-0.5u,-0.5u) rotated 45 withpen PenD;
enddef;
    initsymbol("p_entrance_MY");
    let p_entrance = p_entrance_MY;
endcode
endlayout
#############################################################################################################################
layout custom_water_blue
  code metapost
    # define water to be light blue
  def a_water (expr p) =
    T:=identity;
#nice light blue - but nearly same as level colour - change back when we have control of that
    thfill p withcolor (0.48, 0.84, 1.0);
#    thfill p withcolor (0.0, 0.0, 1.0);
 
    enddef;
 
# define sump to be dark blue
  def a_sump (expr p) =
    T:=identity;
    thfill p withcolor (0.05, 0.0, 0.7);
  enddef;
  endcode
endlayout

#############################################################################################################################

layout custom_legend_large_format_5U
  code metapost
    % code to make the legend boxes much bigger
    %  
    def draw_legend_box =
        %make the objects in the legend boxes bigger
        currentpicture := currentpicture scaled 1.7;
        clip currentpicture to unitsquare scaled 5u;
        drawoptions();
        pickup PenB;
        draw unitsquare scaled 5u ;
    enddef;

    %clear the background of the larger legend boxes    
    def clean_legend_box =
        unfill unitsquare scaled 5u;
    enddef;
    
    %change the value of inscale to fill the legend boxes
    def inscale = 
        xscaled legend_scale yscaled (0.618*legend_scale)
        %xscaled legend_scale yscaled legend_scale
     enddef;

  endcode
endlayout

############################################################################################################################

layout custom_scalebar
#Change the scale bar to black and white bar, split into 5 and labelled
code metapost
  def s_scalebar (expr l, units, txt) =
    begingroup
      interim warningcheck:=0;
      tmpl:=l / Scale * cm * units / 2;
      tmpx:=l / Scale * cm * units / 5;
      tmph:=5bp; % bar height
    endgroup;
    pickup PenC;
#Adjusted to make lines not stick out: 0.25*u/10,0 is half thickness of PenC
    draw (-tmpl+0.25*u/10,0)--(tmpl-0.25*u/10,0);
    draw (tmpl-0.25*u/10,-tmph)--(-tmpl+0.25*u/10,-tmph);
    p:=(0,0)--(tmpx,0)--(tmpx,-tmph)--(0,-tmph)--cycle;
    for i:=-2.5 step 2 until 2:
      fill p shifted (i * tmpx,0);
 
    endfor;
    begingroup
      interim labeloffset:=3.5bp;
      for i:=0 step (l/5) until (l-1):
        tmpx:=tmpl * (i * 2 / l - 1);
        label.top(thTEX(decimal (i)),(tmpx,0));
      endfor;
      label.top(thTEX(decimal (l) & "\thinspace" & txt),(tmpl,0));
#      label.bot(thTEX("Original Scale = 1 : " & decimal (Scale*100)),(0,-tmph));
    endgroup;
  enddef;
 
endcode
endlayout

##############################################################################################################################

layout custom_continuations
#this metapost for continuations makes the text appear after the ? on the actual survey
code metapost

def p_continuation(expr pos,theta,sc,al) =
      % draw default continuation symbol ie ?
      p_continuation_UIS(pos,theta,sc,al);
      % if text attribute is set
      if known(ATTR__text) and picture(ATTR__text):
      % set labeling color to light orange
      push_label_fill_color(0.8, 0.8, 0.0);
      % draw filled label with text next to symbol ?
      p_label.urt(ATTR__text,(.5u,-.25u) transformed T,0.0,8);
      % restore original labeling color
      pop_label_fill_color;
      fi;
    enddef;
  endcode
endlayout

#############################################################################################################################
layout custom_border
##this draws thicker border around pdf output
code tex-map
     \framethickness=0.5mm
endcode  
endlayout
#############################################################################################################################

  layout custom_grid
##change default cross hair grid to grid
    code metapost
      def s_hgrid (expr xpos, ypos, xsize, ysize) =
        pickup PenD;
	if ( xpos >=  -xsize ) and ( ypos >= -ysize ):
          draw ( -xsize/2, 0) -- ( xsize/2, 0);
	  draw ( 0, -ysize/2) -- ( 0, ysize/2);
	fi
      enddef;
    endcode
  endlayout

#############################################################################################################################
layout custom_lines
## dotted lines for offsets, arrow heads, hydro connection

code metapost
% Q = 0 -- no arrows
% 1 -- end
% 2 -- begin
% 3 -- both
def l_arrow (expr P, Q) =
T:=identity;
pickup PenB;
thdraw P;
p := (-.1u,-.5u)--(0,0)--(.1u,-.5u)--cycle; 
% 0.25 changed to .5 and close end to get nicer arrowhead
if odd Q:
thfilldraw p rotated (angle(thdir(P,0))+90) 
shifted (point 0 of P);
fi;
if Q>1:
thfilldraw p rotated (angle(thdir(P,length P))-90) 
shifted (point infinity of P);
fi;
enddef;


def l_mapconnection (expr P) =
thdrawoptions(dashed dashpattern(on 1bp off 2bp on 1bp off 2bp) 
 
scaled (3 * optical_zoom) withpen PenB);
%draw map-connection line with arrowhead at end
l_arrow(P,1); %How to double or triple arrowhead size with this call?
 
%draw dot at start of map-connection line
thdraw point infinity of P withpen pencircle scaled 0.3u; 
%Why infinity and not 0 for dot at start of line?? 
%If point before arrow head, then point does not render in legend but does on map?? 
 
thdrawoptions();
enddef;

def l_wall_unsurveyed (expr P) = 
#CODE TO MAKE UNSURVEYED WALL LINES LIGHT-WEIGHT AND DASHED
  T:=identity;
  pickup PenC;
  thdraw P dashed evenly scaled (2*optical_zoom);
enddef;
endcode


code metapost
def p_camp_GFS (expr pos,r,s,al) =
    U:=(.4u, .5u);
    T:=identity aligned al scaled s shifted pos;
 
    pickup PenC;
    thdraw (-.5u,-.4u)--(.5u,-.4u);
    pickup PenD;
    thdraw (-.4u,-.4u)--(0,.5u)--(.4u,-.4u);
    thfill (-.3u,-.4u)--(0,.30u)--(.3u,-.4u)--cycle;
    thfill (0,.5u)--(.35u,.45u)--(.07u,.35u)--cycle;
enddef;
initsymbol("p_camp_GFS");
symbol-assign point camp GFS

def l_u_hydro (expr P) = 
#Create new line for showing presumed hydrological connections on overlay (Phil Walker - 2024)
  T:=identity;
  pickup PenA scaled 2;	
  thdraw P dashed evenly scaled (4*optical_zoom);
enddef;
endcode


symbol-colour line u:hydro  [48 84 100] #make 'presumed' hydrological connection lines blue


code metapost
##break lines Select this as line type “u” with “-subtype break” in its options. 
##You will also need to define it with “-clip off” in its options to allow the ends of the line to show up outside the walls.

  def l_u_break(expr P)=
    begingroup;
      save mainpath, parallel, orientation, direction, gapsize;
      T:=identity;
      gapsize:=u/3;
      path mainpath;
      %make the ends stick out beyond the passage
      mainpath:=( (point 0 of P) + u * unitvector( thdir(P, 0) rotated 180 ) / 2 )
                -- P --
                ( (point (length P) of P) + u * unitvector( thdir(P, arclength P) ) / 2 );
      path parallel;
      string orientation;
      orientation:=if known ATTR_orientation: ATTR_orientation; else: "horizontal"; fi;
      if orientation = "vertical":
        direction:=if (xpart (point 0 of mainpath)) > (xpart (point (length mainpath) of mainpath)): 1; else: -1; fi;
        parallel:=mainpath shifted (0, direction * gapsize);
      else:
        direction:=if (ypart (point 0 of mainpath)) > (ypart (point (length mainpath) of mainpath)): -1; else: 1; fi;
        parallel:=mainpath shifted (direction * gapsize, 0);
      fi;
      if known fill_l_u_break:
        thfill (mainpath -- (reverse parallel) -- cycle) withcolor fill_l_u_break;
      else:
        thunfill (mainpath -- (reverse parallel) -- cycle);
      fi;
      pickup PenC;
      thdraw mainpath;
      thdraw parallel;
    endgroup;
  enddef;
  initsymbol("l_u_break");
  def l_u_break_legend =
    l_wall_bedrock(((0,.2) .. controls (.3,.2) and (.4,.4) .. (.6,.4)) inscale);
    l_wall_bedrock(((.7,.6) .. controls (.4,.6) and (.3,.4) .. (0,.4)) inscale);
    l_u_break(((.6,.4) -- (.7,.6)) inscale);
  enddef;
endcode

code metapost
  rgbcolor fill_l_u_break;
  fill_l_u_break:=(1,1,1);
endcode


endlayout

#############################################################################################################################
layout custom_boxed_labels
##adapted from Benedikt Hallinger
 # Symbol to denote assigned survey.
  #   Option "-attr text <string>" shows given text; otherwise current survey is shown.
  #   Option "-attr bordersmooth <num>" overrides edge smoothness (0 for sharp edges)
  #   Option "-attr bordermargin <num>" overrides margin text/border
  #   Option "-attr basescale <num>" overrides basic text sizing factor (default text size)
  #   Option "-attr fillsize <s_pct>" fills with page background color; s_pct is percent of bbox size
 
code metapost
 def p_u_mappe(expr pos, theta, sc, al) =
    T:=identity aligned al rotated theta scaled sc shifted pos;
    begingroup;
      % Basic config
      bordersmooth:=4;         % smoothness of box corners  (0=90° edges)
      bordermargin:=5.0bp;     % padding border->text
      basescale:=1.0;          % basic scaling of default-sized text
      fillsize:=-1.0;           % proportional size of label filling (percent)
      if known(ATTR_bordersmooth): bordersmooth:=scantokens(ATTR_bordersmooth); fi;
      if known(ATTR_bordermargin): bordermargin:=scantokens(ATTR_bordermargin); fi;
      if known(ATTR_basescale):    basescale:=scantokens(ATTR_basescale);       fi;
      if known(ATTR_fillsize):     fillsize:=scantokens(ATTR_fillsize);         fi;
    
      % GET LABEL TEXT:
      string txt;
      if known(ATTR_text):
          txt := ATTR_text;
      else:
              txt := ATTR__survey;
      fi;
      
      % PREPARE LABEL:
      lab:=thelabel(txt, (0.0,0.0));
      pickup PenA;                       % border thickness
      interim bboxmargin:=bordermargin;  % padding border->text
      
      % PREPARE BOX and DRAW BOX BACKGROUND:
      % q is the box as drawed, but we fill the place first before drawing
      q:=((bbox lab) smoothed bordersmooth) aligned al scaled (sc * basescale) rotated theta shifted pos;
      if (fillsize <> -1.0):
          % draw extending filled box around symbol
          if known(MapBackground):
              % from therion versions newer than 6.0.3+3551531+dev (23.11.2021) we use page background
              thfill ((bbox lab) smoothed bordersmooth) scaled (sc * basescale * fillsize) withcolor MapBackground;
          else:
              thfill ((bbox lab) smoothed bordersmooth) scaled (sc * basescale * fillsize) withcolor label_fill_color;
          fi;
      fi;
      % the following will draw the actual visible interior-filling of the box
      thfill ((bbox lab) smoothed bordersmooth) scaled (sc * basescale) withcolor label_fill_color;
	
      
      % DRAW BOX
      draw q;
      
      % DRAW LABEL TEXT
      lab:=lab aligned al;
      lab:=lab scaled (sc * basescale);
      lab:=lab rotated theta;
      lab:=lab shifted pos;
      process_label(pos, 0.001);   % for some weird reason "0.0" does not work here and puts the label to map-center at scrap-rotation.
    endgroup;
  enddef;
  endcode
  endlayout