/usr/share/texlive/texmf-dist/metapost/piechartmp/piechartmp.mp is in texlive-metapost 2013.20140215-1.
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%H description: Metapost package for 2D/3D pie charts
%H file: piechartmp.mp
%H author: Jens-Uwe Morawski <morawski@gmx.net>
%H version: 0.3.0 2002/05/14
%L Copyright 2002, Jens-Uwe Morawski
%L License: LPPL 1.0, see LEGAL
%I * all user commands start with uppercase letters:
%I Segment, SegmentState,
%I SetupColors, SetupNumbers, SetupText,
%I SetupValue, SetupPercent, SetupName,
%I PieChart, Label
%I * user variables start with uppercase letters:
%I PiechartBBox, R
%I * all internal functions start with '_' except
%I SegmentColor, SegmentPoint
%I * all internal variables start with 'pc_' except
%I auto, hidden, normal, invisible, this,
%I inwards, outwards, name, percent, value
%\
% initialisation
%\
if known piechart_module: endinput ; fi ;
boolean piechart_module ; piechart_module := true ;
% === data / input routines === (pc-input.mp)
%\
% vars / internals
%\
newinternal hidden ; hidden := -1 ;
newinternal invisible ; invisible := 0 ;
newinternal normal ; normal := 1 ;
%\
% data input/ user values / segment state
%\
numeric pc_Count ; pc_Count := 0 ; % number of defined segments
numeric pc_xValue[], pc_xOffset[], pc_xState[];
color pc_xFill[] ;
string pc_n_Label[], pc_v_Label[] ;
def Segment(text s) =
begingroup;
save i ; numeric i ; i:=0;
pc_Count := pc_Count + 1 ;
for e=s:
i := i+1 ;
if i=1:
pc_xValue[pc_Count] := e ;
pc_n_Label[pc_Count] := _numericToString(pc_Count, -1) ;
pc_xFill[pc_Count] := auto ;
pc_v_Label[pc_Count] := _numericToString(e, -1) ;
elseif i=2:
pc_n_Label[pc_Count] := e ;
elseif i=3:
pc_xFill[pc_Count] := _applyColorOrPattern(e) ;
elseif i=4:
pc_v_Label[pc_Count] := e ;
fi;
endfor;
if i=0:
errmessage "Segment: too few arguments for segment " &
(decimal pc_Count) ;
fi;
pc_xState[pc_Count] := normal ;
pc_xOffset[pc_Count] := 0 ;
endgroup;
enddef;
def SegmentState(expr s, st, sh ) =
if not _isThis(st):
pc_xState[s] := st ;
fi;
if not _isThis(sh):
pc_xOffset[s] := sh ;
fi;
enddef;
%C reset diagramm data
def ResetSegments =
pc_Count := 0 ;
enddef;
% === drawing routines === (pc-draw.mp)
%\
% vars / internals
%\
newinternal R;
pair pc_Centre; pc_Centre := origin ;
numeric pc_Offset ;
numeric pc_Depth ;
numeric pc_View ;
numeric pc_Sum ;
numeric pc_xStart[], pc_xEnd[] ;
boolean pc_Metafun ; pc_Metafun := false ;
if known context_spec : pc_Metafun := true ; fi ;
%\
% diagram drawing
%\
%C PieChart(<diagramm radius>, <thickness in R>, <angle>, <rotation>,<global offset in R>)
def PieChart (expr u, d, va, r, go) =
begingroup ;
save rot, pointer ; numeric rot , pointer;
R := u ;
if ( va < 90 ) and ( va >= 0 ):
pc_View := va ;
else:
message "Warning: Observation angle of " & ( decimal va ) & " is not valid. Substituted with 65." ;
pc_View := 65 ;
fi ;
pc_Offset := go ;
pc_Sum := 0 ;
for i=1 upto pc_Count:
if (pc_xState[i] >= 0):
pc_Sum := pc_Sum + pc_xValue[i] ;
fi ;
endfor;
if (( r >= 0 ) and ( r <= 359 )):
rot := r ;
else:
rot := 0 ;
message "Warning: Rotation " & (decimal r) & " is not within 0-359. Defaults to 0" ;
fi ;
pointer := rot ;
for i=1 upto pc_Count:
if ( pc_xState[i] >= 0 ):
pc_xStart[i] := pointer ;
pc_xEnd[i] := pc_xStart[i] + (pc_xValue[i] / pc_Sum)*360.00 ;
else:
pc_xStart[i] := pointer ;
pc_xEnd[i] := pointer ;
fi ;
pointer := pc_xEnd[i] ;
endfor;
pc_Depth := d*R*(sind pc_View) ;
if (pc_View > 0): _drawSides ; fi ;
_drawTop ;
endgroup ;
enddef;
%C draws top sides of all visible segments
def _drawTop =
begingroup ;
save c , a, e, p ; path c, a, e ; picture p ;
for i=1 upto pc_Count:
if ( pc_xState[i] > 0) :
c := fullcircle rotated (pc_xStart[i]) scaled (2*R) ;
e := origin--(1.1*R*(cosd pc_xEnd[i]) , 1.1*R*(sind pc_xEnd[i]) ) ;
c := c cutafter e ; c := origin--c--cycle ;
fill ( c yscaled (cosd pc_View) ) shifted _calcSegmentShift(i) withcolor SegmentColor(i) ;
if ( greenpart pc_xFill[i]) = -2 :
p := _makePattern(i, c) ;
draw ( p yscaled (cosd pc_View) ) shifted _calcSegmentShift(i) withcolor _patternColor(i) ;
fi;
fi ;
endfor;
endgroup ;
enddef;
%C visual ordering of side elements
def _drawSides =
begingroup ;
save _etd, c , a , e;
numeric _etd[][] , c , a , e;
c := 0 ;
for i=1 upto pc_Count:
if (pc_xState[i] > 0) :
if _visibleStart(i):
c := c + 1 ;
_etd[c][1] := 1 ;
_etd[c][2] := sind ( _normalizeAngle(pc_xStart[i])) ;
_etd[c][3] := i ;
_etd[c][4] := _normalizeAngle(pc_xStart[i]) ;
fi
if _visibleEnd(i):
c := c + 1 ;
_etd[c][1] := 1 ;
_etd[c][2] := sind ( _normalizeAngle(pc_xEnd[i])) ;
_etd[c][3] := i ;
_etd[c][4] := _normalizeAngle(pc_xEnd[i]) ;
fi
if _visibleOutside(i):
c := c + 1 ;
if _outsideIsDivided(i):
_etd[c][1] := 2 ;
_etd[c][3] := i ;
_etd[c][4] := _normalizeAngle(pc_xStart[i]) ;
_etd[c][5] := 360 ;
c := c + 1 ;
_etd[c][1] := 2 ;
_etd[c][3] := i ;
_etd[c][4] := 180 ;
_etd[c][5] := _normalizeAngle(pc_xEnd[i]) ;
else :
a := pc_xStart[i] ;
e := pc_xEnd[i] ;
if ( (sind a) >= 0 ):
a := 180 ;
fi ;
if ( (sind e) >= 0 ) :
e := 360 ;
fi ;
_etd[c][1] := 2 ;
_etd[c][3] := i ;
_etd[c][4] := _normalizeAngle(a) ;
_etd[c][5] := _normalizeAngle(e) ;
fi
fi
fi
endfor;
for i=1 upto c:
if (_etd[i][1] = 2 ):
if (( (cosd _etd[i][4])*(cosd _etd[i][5]) ) >= 0):
_etd[i][2] := sind (0.5*(_etd[i][4] + _etd[i][5]));
else :
_etd[i][2] := -1 ;
fi
fi
endfor;
for i=1 upto c :
a := -2 ; e := 0 ;
for j=1 upto c:
if (_etd[j][1] > 0) and (_etd[j][2] > a):
e := j ;
a := _etd[j][2] ;
fi
endfor;
if (e > 0):
if (_etd[e][1] = 1):
_drawInside(_etd[e][3],_etd[e][4]) ;
else:
_drawOutside(_etd[e][3],_etd[e][4],_etd[e][5]) ;
fi
_etd[e][1] := 0 ;
fi
endfor;
endgroup ;
enddef;
def _drawInside (expr s, a) =
begingroup ;
save b, e; path e, b;
e := origin--(R*(cosd a), R*(sind a)*(cosd pc_View) ) ;
b := (R*(cosd a), R*(sind a)*(cosd pc_View) )--origin ;
%if ( (sind a) > 0): b := b yscaled (1 + (0.1*(sind a)*(sind pc_View))); fi ;
b := b shifted (0, -pc_Depth) ;
e := b--e--cycle ; e := e shifted _calcSegmentShift(s) ;
fill e withcolor _calcInsideColor(s,a) ;
endgroup ;
enddef;
def _drawOutside (expr s, a, e) =
begingroup ;
save p, h, g ;
path p, h, g ;
if (pc_Metafun and (a < 270) and (e > 270)) :
_drawOutside(s,a,270) ;
_drawOutside(s,270,e) ;
else :
g := fullcircle xscaled (2*R) yscaled (2*R*(cosd pc_View));
g := subpath (4,8) of g ; %top
h := g shifted (0, -pc_Depth) ; % below
g := g xscaled -1 ; % in the reverse direction
p := (R*(cosd e),0)--(R*(cosd e),-1.1*(R*(cosd pc_View)+pc_Depth)) ;
h := h cutafter p ;
g := g cutbefore p ;
p := (R*(cosd a),0)--(R*(cosd a),-1.1*(R*(cosd pc_View)+pc_Depth)) ;
h := h cutbefore p ;
g := g cutafter p ;
p := h--g--cycle ; p := p shifted _calcSegmentShift(s) ;
if pc_Metafun:
linear_shade(p,0,_calcOutsideColor(s,a),_calcOutsideColor(s,e)) ;
else :
fill p withcolor _calcOutsideColor(s, (0.5*(a+e)) ) ;
fi ;
fi ;
endgroup ;
enddef;
%\
% help macros
%\
vardef _visibleStart (expr s) =
save b; boolean b;
b:= ( ( cosd ( _normalizeAngle(pc_xStart[s]) )) > 0 ) and
( (pc_Offset > 0) or (pc_xOffset[s] > 0) or
(pc_xState[ _prevSegment(s) ] = 0) or
(pc_xOffset[_prevSegment(s)] > 0) );
b
enddef;
vardef _visibleEnd (expr s) =
save b; boolean b;
b:= ( ( cosd ( _normalizeAngle(pc_xEnd[s]) )) < 0 ) and
( (pc_Offset > 0) or (pc_xOffset[s] > 0) or
(pc_xState[ _nextSegment(s) ] = 0) or
(pc_xOffset[_nextSegment(s)] > 0) );
b
enddef;
vardef _visibleOutside (expr s) =
save b; boolean b;
b := ((sind pc_xStart[s] < 0) or (sind (pc_xEnd[s]) < 0) or
(sind (0.5*(pc_xStart[s] + pc_xEnd[s])) < 0)) ;
b
enddef;
vardef _outsideIsDivided (expr s) =
save b; boolean b;
b := ( ( (sind pc_xStart[s]) < 0 ) and
( (sind pc_xEnd[s] ) < 0 ) and
( (sind (0.5*(pc_xStart[s]+pc_xEnd[s])) ) >= 0 ) );
b
enddef;
% === colors ==== (pc-color.mp)
%\
% vars / internals
%\
color auto ; auto := (-1,-1,-1) ;
%\
% color
%\
%C returns the color of the segment with number s;
%C if the segment uses pattern fill it returns the
%C background color
vardef SegmentColor(expr s) =
save tC; color tC;
if pc_xFill[s] = (-1,-1,-1):
tC := _autoColor( 0.5*(pc_xStart[s]+pc_xEnd[s]) - pc_xStart[1] ) ;
elseif ( (greenpart pc_xFill[s]) = -2 ) :
tC := pc_patternBGColor[(bluepart pc_xFill[s])] ;
if tC = (-1,-1,-1):
tC := _autoColor( 0.5*(pc_xStart[s]+pc_xEnd[s]) - pc_xStart[1] ) ;
fi ;
else:
tC := pc_xFill[s] ;
fi;
if pc_sGrayscale:
tC := (0.3*(redpart tC) + 0.59*(greenpart tC) + 0.11*(bluepart tC))*white ;
fi ;
tC
enddef;
%C returns the foreground color of the pattern
vardef _patternColor (expr s) =
save tC, v, h ; color tC; numeric v, h ;
tC := pc_patternFGColor[(bluepart pc_xFill[s])] ;
if tC = (-1,-1,-1):
tC := SegmentColor(s) ;
tC := _rgbToHsv(tC) ;
h := redpart tC ;
h := h - 180 ;
if h<0: h := h + 360 ; fi ;
v := bluepart tC ;
v := 1 - v ;
tC := ( h , greenpart tC , v) ;
tC := _hsvToRgb(tC) ;
fi;
if pc_sGrayscale:
tC := (0.3*(redpart tC) + 0.59*(greenpart tC) + 0.11*(bluepart tC))*white ;
fi ;
tC
enddef;
%C returns the color of the insides in 3D view of the segment s
%C a is the angle/direction of the side in the diagram
vardef _calcInsideColor (expr s, a) =
save tC, f; color tC; numeric f ;
f := cosd ( (abs(cosd a))*pc_View ) ;
tC := SegmentColor(s) + f*(xpart pc_sShadeSV)*( _minSaturation(SegmentColor(s)) - SegmentColor(s) ) ;
tC := tC + f*(ypart pc_sShadeSV)*( black - tC ) ;
tC
enddef;
%C returns the color of the outsides in 3D view of the segment s
%C a is the angle/direction of the side in the diagram
vardef _calcOutsideColor (expr s, a) =
save tC, f; color tC; numeric f ;
f := cosd ( (abs(sind a))*pc_View ) ;
tC := SegmentColor(s) + f*(xpart pc_sShadeSV)*( _minSaturation(SegmentColor(s)) - SegmentColor(s) ) ;
tC := tC + f*(ypart pc_sShadeSV)*( black - tC ) ;
tC
enddef;
%\
% help macros
%\
%C return a color from c as if saturation is set to zero
vardef _minSaturation (expr c)=
save sat; numeric sat; sat := 0 ;
sat := 0.3*(redpart c) + 0.59*(greenpart c) + 0.11*(bluepart c) ;
sat*white
enddef;
%C automatic color values
vardef _autoColor(expr a) =
_hsvToRgb( (a, (xpart pc_sAutoSV), (ypart pc_sAutoSV)) )
enddef;
vardef _hsvToRgb(expr c) =
save h,s,v, H,o, b, d, pc, sc;
numeric h,s,v,H, o, b, d, pc, sc ;
h := redpart c ;
s := greenpart c ;
v := bluepart c ;
H := _normalizeAngle(h) / 60 ;
pc := floor H ;
sc := H - pc ;
o := (1 - s)*v ;
b := (1 - (sc*s) )*v;
d := (1 - ((1-sc)*s) )*v ;
if (pc = 0) or (pc = 6):
(v,d,o)
elseif pc = 1:
(b,v,o)
elseif pc = 2:
(o,v,d)
elseif pc = 3:
(o,b,v)
elseif pc = 4:
(d,o,v)
else:
(v,o,b)
fi
enddef;
vardef _rgbToHsv (expr c) =
save r,g,b,h,s,v, _r, _g, _b, min, max ;
numeric r,g,b,h,s,v, _r, _g, _b, min, max ;
r := redpart c ;
g := greenpart c ;
b := bluepart c ;
min := r ; max := r ;
if (g < min): min := g ; fi ;
if (g > max): max := g ; fi ;
if (b < min): min := b ; fi ;
if (b > max): max := b ; fi ;
if max > 0:
s := (max - min)/max ; v := max ;
else:
s := 0; v := 0 ;
fi ;
if (s = 0):
h := 0 ; % is undefined
else:
_r := (max - r)/(max - min) ;
_g := (max - g)/(max - min) ;
_b := (max - b)/(max - min) ;
if ((r = max ) and (g = min)): h := 5 + _b ;
elseif ((r = max ) and (g <> min)): h := 1 - _g ;
elseif ((g = max ) and (b = min)): h := 1 + _r ;
elseif ((g = max ) and (b <> min)): h := 3 - _b ;
elseif (r = max): h := 3 + _g ;
else: h := 5 - _r ;
fi ;
fi ;
h := 60 * h ;
(h,s,v)
enddef;
% === pattern routines === (pc-pattr.mp)
%\
% vars
%\
numeric pc_patternType[] ;
color pc_patternFGColor[], pc_patternBGColor[] ;
pair pc_patternDimen[] ;
%\
% routines
%\
%C called via Segment();
vardef _applyColorOrPattern (expr c) =
if color c:
c
else:
if ( numeric c ):
if known pc_patternType[c]:
(-1,-2,c)
else:
errmessage "Pattern number " & (decimal c) & " not defined" ;
(-1,-1,-1)
fi
else:
show c ;
hide(errmessage "Not a valid pattern number.") ;
(-1,-1,-1)
fi
fi
enddef;
%C defines a pattern with number n, of type t
%C with foreground color f and background color b
%C with dimensions (pair) d
def DefinePattern (expr n, t, b, f, d) =
pc_patternType[n] := t ;
pc_patternFGColor[n] := f ;
pc_patternBGColor[n] := b ;
pc_patternDimen[n] := d ;
enddef;
%C returns a picture including the pattern
%C for segment s in path p
vardef _makePattern (expr s, p) =
save o, u, type, spacing, dimen, b, xs, ys, q ;
pair o, u ; numeric type, spacing, dimen ;
picture b ;
b := nullpicture ;
type := pc_patternType[(bluepart pc_xFill[s])] ;
dimen := ypart pc_patternDimen[(bluepart pc_xFill[s])] ;
spacing := xpart pc_patternDimen[(bluepart pc_xFill[s])] ;
o := ulcorner p ;
u := lrcorner p ;
if type = 0:
b := PrivatePattern (o, u, spacing, dimen) ;
elseif type = 1:
numeric ys ; path line ;
ys := ( ypart o ) + ypart (o - u ) - spacing ;
forever:
exitif ( ys <= ypart u ) ;
line := (xpart o, ys)--(xpart u, ys - ypart(o-u)) ;
addto b doublepath line withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
elseif type = 2:
numeric ys ; path line ;
ys := ( ypart o ) + ypart (o - u ) - spacing ;
forever:
exitif ( ys <= ypart u ) ;
line := (xpart o, ys - ypart(o-u) )--(xpart u, ys ) ;
addto b doublepath line withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
elseif type = 3:
numeric ys ; path line ;
ys := ( ypart o ) + ypart (o - u ) - spacing ;
forever:
exitif ( ys <= ypart u ) ;
line := (xpart o, ys - ypart(o-u) )--(xpart u, ys ) ;
addto b doublepath line withpen pencircle scaled dimen ;
line := (xpart o, ys )--(xpart u, ys - ypart(o-u) ) ;
addto b doublepath line withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
elseif type = 4:
numeric ys ; path line ;
ys := ( ypart o ) - spacing ;
forever:
exitif ( ys <= ypart u ) ;
line := (xpart o, ys )--(xpart u, ys ) ;
addto b doublepath line withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
elseif type = 5:
numeric xs ; path line ;
xs := ( xpart o ) - spacing ;
forever:
exitif ( xs >= xpart u ) ;
line := (xs, ypart o)--(xs, ypart u) ;
addto b doublepath line withpen pencircle scaled dimen ;
xs := xs + spacing ;
endfor;
elseif type = 6:
numeric xs, ys ; path line ;
xs := ( xpart o ) - spacing ;
forever:
exitif ( xs >= xpart u ) ;
line := (xs, ypart o)--(xs, ypart u) ;
addto b doublepath line withpen pencircle scaled dimen ;
xs := xs + spacing ;
endfor;
ys := ( ypart o ) - spacing ;
forever:
exitif ( ys <= ypart u ) ;
line := (xpart o, ys )--(xpart u, ys ) ;
addto b doublepath line withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
elseif type = 7:
numeric xs, ys ;
xs := ( xpart o ) ;
forever:
exitif ( xs >= xpart u ) ;
ys := ( ypart o ) ;
forever:
exitif ( ys <= ypart u ) ;
addto b doublepath (xs,ys) withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
xs := xs + spacing ;
endfor;
elseif type = 8:
numeric xs, ys ;
xs := ( xpart o ) ;
forever:
exitif ( xs >= xpart u ) ;
ys := ( ypart o ) ;
forever:
exitif ( ys <= ypart u ) ;
addto b doublepath (xs,ys) withpen pencircle scaled dimen ;
addto b doublepath (xs+.5*spacing,ys+.5*spacing) withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
xs := xs + spacing ;
endfor;
elseif type = 9:
numeric xs, ys ; path q[] ;
q1 := (0,0){curl 0}..(0.25*spacing, -0.2*spacing )..{curl 0}(0.5*spacing, 0) ;
q2 := q1..(q1 yscaled -1 shifted (.5*spacing, 0)) ;
xs := ( xpart o ) ;
forever:
exitif ( xs >= xpart u ) ;
ys := ( ypart o ) ;
forever:
exitif ( ys <= ypart u ) ;
addto b doublepath (q[2] shifted (xs,ys)) withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
xs := xs + spacing ;
endfor;
elseif type = 10:
numeric xs, ys ; path q ;
q := (0,0)--(0.5*spacing, -0.5*spacing )--(0,-spacing) ;
xs := ( xpart o ) ;
forever:
exitif ( xs >= xpart u ) ;
ys := ( ypart o ) ;
forever:
exitif ( ys <= ypart u ) ;
addto b doublepath (q shifted (xs,ys)) withpen pencircle scaled dimen ;
ys := ys - spacing ;
endfor;
xs := xs + spacing ;
endfor;
else:
errmessage "pattern type " & (decimal type) & " not defined."
b := nullpicture;
fi;
clip b to p ;
b
enddef;
vardef PrivatePattern (expr ulc, lrc, spc, lwd) =
save pic, cntr, c, k ;
picture pic ; pic := nullpicture ;
pair cntr ;
numeric c ;
path k ;
cntr := 0.5*( lrc + ulc ) ;
c := ((xpart (ulc - cntr))++(ypart (ulc - cntr))) / spc ;
c := ( floor c ) ;
for i=1 upto c:
k := fullcircle scaled (i*2*spc) shifted cntr ;
addto pic doublepath k withpen pencircle scaled lwd ;
endfor;
pic
enddef;
% === label commands === (pc-label.mp)
%\
% vars
%\
%C
color name, percent, value ;
name := (-1,-4,1) ; percent := (-1,-4,2) ; value := (-1,-4,3) ;
%C additional label positioning parameters
pair laboff.auto; laboff.auto=(-3,-3) ;
labxf.auto=0; labyf.auto=0;
%\
% text / labels / legend
%\
def Label = draw _theLabel enddef ;
vardef _theLabel@#(text t)(text d)(expr sp, sh) =
save pic ; picture pic ; pic := nullpicture ;
for S=t:
if S=0:
for i=1 upto pc_Count:
if pc_xState[i] = 1:
addto pic also _makeSegLabel.@#(i,sp,sh)(d) ;
fi;
endfor;
else:
if (S > 0) and (S <= pc_Count):
if pc_xState[S]= 1 :
addto pic also _makeSegLabel.@#(S,sp,sh)(d) ;
fi;
else:
message "Label: segment " & (decimal S) & " not defined.";
fi;
fi;
endfor;
pic
enddef;
vardef _makeSegLabel@# (expr s, sp, sh)(text dat) =
save d , t, p, o , pic, l;
numeric l;
pair p, o ;
picture t, pic ; pic := nullpicture ;
string d ; d := "" ;
for f=dat:
if color f:
if (bluepart f = 1 ):% name of segment
d := d & pc_n_Pre & pc_n_Label[s] & pc_n_Post ;
elseif (bluepart f = 2 ):% percent value
d := d & pc_p_Pre &
_numericToString( 100*(pc_xValue[s]/pc_Sum), pc_sPrecision) &
pc_p_Post ;
elseif (bluepart f = 3 ):%segment value
d := d & pc_v_Pre & pc_v_Label[s] & pc_v_Post ;
fi;
elseif string f:% free string
d := d & f ;
else:
errmessage "Not a valid label-data: "; show f ;
fi;
endfor;
t := _makeText(d) ;
if pair sh :
if sh = (0,0):
o := SegmentPoint(s,(0,0)) ;
p := SegmentPoint(s,sp) ;
addto pic doublepath p withpen currentpen ;
else:
o := SegmentPoint(s,sp) ;
p := o shifted sh ;
addto pic doublepath o--p withpen currentpen ;
fi;
else:
p := SegmentPoint(s,sp) ;
o := SegmentPoint(s,(0,0)) ;
fi;
if laboff.@# = (-3,-3): % auto justification
l := _normalizeAngle( angle(p-o) ) ;
laboff.auto := ((cosd l),(sind l)) ;
labxf.auto := ((cosd l) - 1) / -2 ;
labyf.auto := ((sind l) - 1) / -2 ;
if (not pair sh) and ((xpart sp) >= 1):
if (sind _normalizeAngle( angle(p-o) )) < 0 :
p := p + (0,-pc_Depth) ;
fi;
fi;
fi;
addto pic also thelabel.@#(t,p) ;
laboff.auto := (-3,-3) ;
pic
enddef;
%\
% help functions
%\
vardef _numericToString (expr n , c) =
save l, s ;
string l, s ;l := "";
if (c < 0):
s := decimal n ;
for i=1 upto (length s):
if ((substring (i-1,i) of s) = "."):
l := l & pc_sDelimiter;
else:
l := l & (substring (i-1,i) of s);
fi;
endfor;
elseif ( (c=3) and (n>32.767) ):
hide(message("Warning: Decrease precision for value " & decimal n & " to 2.")) ;
s := decimal ( round(n*(10**(c-1))) ) ;
l := substring (0,(length s)-2) of s &
pc_sDelimiter &
substring ((length s)-2,length s) of s ;
else:
s := decimal ( round(n*(10**c)) ) ;
if (c>0):
l := substring (0,(length s)-c) of s &
pc_sDelimiter &
substring ((length s)-c,length s) of s ;
else:
l := substring (0,(length s)-c) of s ;
fi ;
fi;
l
enddef;
% === text routines === (pc-text.mp)
%\
% vars
%\
string pc_TeXFile ;
pc_TeXFile := jobname & ".pct" ;
%\
% TeX
%\
vardef _makeText primary s =
if ( pc_sTextScheme > 0 ) :
write "verbatimtex" to pc_TeXFile ;
if ( pc_sTextScheme = 3 ):
write "%&latex" to pc_TeXFile ;
else:
write pc_sTeXFormat to pc_TeXFile ;
fi;
if ( pc_sTextScheme > 1 ):
write "\documentclass{minimal}" to pc_TeXFile ;
write pc_sTeXSettings to pc_TeXFile ;
write "\begin{document}" to pc_TeXFile ;
else:
write pc_sTeXSettings to pc_TeXFile ;
fi;
write "etex" to pc_TeXFile ;
write "btex "&s&" etex" to pc_TeXFile;
write EOF to pc_TeXFile;
scantokens ("input " & pc_TeXFile )
else:
s infont defaultfont scaled defaultscale
fi
enddef;
% === support routines === (pc-supp.mp)
%\
% vars / internals
%\
pair inwards, outwards ;
inwards := (.66, .5) ; outwards := (1.05, .5) ;
%\
% macros
%\
vardef SegmentPoint (expr s, t) =
save p, a ; pair p ;
numeric a ;
if (( ( xpart t) >=0 ) and
( ( ypart t) >=0 ) and
( ( ypart t) <=1 ) ):
a := pc_xStart[s] + (ypart t)*(pc_xEnd[s] - pc_xStart[s]) ;
p := ( ( xpart t)*R*(cosd a) , ( xpart t)*R*(sind a)*(cosd pc_View) ) ;
p := p + _calcSegmentShift(s) ;
else :
errmessage "SegmentPoint: point definition for segment " & (decimal s) & " is not valid. Substituted with default." ;
p := SegmentPoint(s,(1,0.5)) ;
fi ;
p
enddef;
vardef _calcSegmentShift(expr s) =
save o, x, y ;
numeric o, x, y ;
o := R*(pc_Offset + pc_xOffset[s]) ;
x := o*(cosd (0.5*(pc_xStart[s] + pc_xEnd[s]))) ;
y := o*(sind (0.5*(pc_xStart[s] + pc_xEnd[s])))*(cosd pc_View) ;
(x,y) + pc_Centre
enddef;
vardef _normalizeAngle (expr a) =
if a > 360:
a - 360
elseif a < 0:
360 + a
else:
a
fi
enddef;
vardef _nextSegment(expr s) =
if s < pc_Count:
if pc_xState[s+1] >= 0:
s+1
else:
_nextSegment(s+1)
fi
else:
if pc_xState[1] >= 0:
1
else:
_nextSegment(1)
fi
fi
enddef;
vardef _prevSegment(expr s) =
if s = 1:
if pc_xState[pc_Count] >= 0:
pc_Count
else:
_prevSegment(pc_Count)
fi
else:
if pc_xState[s-1] >= 0:
s-1
else:
_prevSegment(s-1)
fi
fi
enddef;
% === setup routines === (pc-setup.mp)
%\
% vars
%\
boolean pc_sGrayscale ; pc_sGrayscale := false ;
pair pc_sAutoSV ; pc_sAutoSV := (1,1) ;
pair pc_sShadeSV ; pc_sShadeSV := (.4,.3) ;
numeric pc_sPrecision ; pc_sPrecision := 0 ;
string pc_sDelimiter ; pc_sDelimiter := "." ;
string pc_sTeXFormat, pc_sTeXSettings ;
pc_sTeXFormat := "" ; pc_sTeXSettings := "" ;
numeric pc_sTextScheme ; pc_sTextScheme := 0 ;
string pc_p_Pre, pc_p_Post, pc_v_Pre, pc_v_Post,
pc_n_Pre, pc_n_Post ;
pc_p_Pre := "" ; pc_p_Post := "" ;
pc_v_Pre := "" ; pc_v_Post := "" ;
pc_n_Pre := "" ; pc_n_Post := "" ;
color this ; this := (-9,-9,-9) ;
vardef _isThis (expr t) =
if color t :
if t = this:
true
else:
false
fi
else:
false
fi
enddef;
def SetupColors (expr a, s, g) =
if not _isThis(a) : pc_sAutoSV := a ; fi ;
if not _isThis(s) : pc_sShadeSV := s ; fi ;
if not _isThis(g) : pc_sGrayscale := g ; fi ;
enddef;
def SetupNumbers (expr p, d) =
if not _isThis(p) : pc_sPrecision := p ; fi ;
if not _isThis(d) : pc_sDelimiter := d ; fi ;
enddef;
def SetupText (expr l, f, s) =
if not _isThis(l) : pc_sTextScheme := l ; fi ;
if not _isThis(f) : pc_sTeXFormat := f ; fi ;
if not _isThis(s) : pc_sTeXSettings := s ; fi ;
enddef;
def SetupPercent (expr r, o) =
if not _isThis(r) : pc_p_Pre := r ; fi ;
if not _isThis(o) : pc_p_Post := o ; fi ;
enddef;
def SetupValue (expr r, o) =
if not _isThis(r) : pc_v_Pre := r ; fi ;
if not _isThis(o) : pc_v_Post := o ; fi ;
enddef;
def SetupName (expr r, o) =
if not _isThis(r) : pc_n_Pre := r ; fi ;
if not _isThis(o) : pc_n_Post := o ; fi ;
enddef;
%C only activate bounding box code if PiechartBBox variable
%C is set by user
if not known PiechartBBox: endinput ; fi;
% === Bounding Box === (pc-bbox.mp)
%\
% vars
%\
pair pc_bULC, pc_bLRC ;
string pc_BBoxFile ; pc_BBoxFile := jobname & ".pcb" ;
%\
% init
%\
begingroup;
save L ; string L ;
L := readfrom pc_BBoxFile ;
if ( L = EOF ): % file not readable
pc_bULC := origin ; pc_bLRC := origin ;
else:
scantokens L ;
L := readfrom pc_BBoxFile ;
scantokens L ;
fi ;
endgroup;
%\
% macros
%\
extra_endfig := extra_endfig & "_pcFitBBox ;" ;
%C merges bbox size of current picture with
%C the size saved in variables pc_bULC/LRC to obtain
%C ths size of a maximum bbox
def _pcFitBBox =
begingroup;
save L, YO, YU, XR, XL ; string L ;
numeric YO, YU, XR, XL ;
if (xpart (ulcorner currentpicture)) < (xpart pc_bULC) :
XL := xpart ( ulcorner currentpicture ) ;
else:
XL := xpart pc_bULC ;
fi ;
if (ypart (ulcorner currentpicture)) > (ypart pc_bULC) :
YO := ypart ( ulcorner currentpicture ) ;
else:
YO := ypart pc_bULC ;
fi ;
if (xpart ( lrcorner currentpicture)) > (xpart pc_bLRC) :
XR := xpart ( lrcorner currentpicture ) ;
else:
XR := xpart pc_bLRC ;
fi ;
if (ypart ( lrcorner currentpicture)) < (ypart pc_bLRC) :
YU := ypart ( lrcorner currentpicture ) ;
else:
YU := ypart pc_bLRC ;
fi ;
setbounds currentpicture to (XL,YO)--(XR,YO)--(XR,YU)--(XL,YU)--cycle ;
write "pc_bULC := ( " &
decimal (xpart (ulcorner currentpicture)) & " , " &
decimal (ypart (ulcorner currentpicture)) & " )" to pc_BBoxFile ;
write "pc_bLRC := ( " &
decimal (xpart (lrcorner currentpicture)) & " , " &
decimal (ypart (lrcorner currentpicture)) & " )" to pc_BBoxFile ;
write EOF to pc_BBoxFile ;
pc_bULC := (XL, YO) ; pc_bLRC := (XR, YU) ;
endgroup;
enddef;
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