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|
%D \module
%D [ file=mp-shap.mpiv,
%D version=2000.05.31,
%D title=\CONTEXT\ \METAPOST\ graphics,
%D subtitle=shapes,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See licen-en.pdf for
%C details.
if known context_shap : endinput ; fi ;
boolean context_shap ; context_shap := true ;
path predefined_shapes[] ;
def start_predefined_shape_definition =
begingroup ;
save xradius, yradius, xxradius, yyradius ;
save ll, lr, ur, ul, llx, lly, lrx, lry, urx, ury, ulx, uly, llxx, llyy, lrxx, lryy, urxx, uryy, ulxx, ulyy, lc, rc, tc, bc ;
numeric xradius, yradius, xxradius, yyradius ;
pair ll, lr, ur, ul, llx, lly, lrx, lry, urx, ury, ulx, uly, llxx, llyy, lrxx, lryy, urxx, uryy, ulxx, ulyy, lc, rc, tc, bc ;
xradius := .15 ;
yradius := .15 ;
xxradius := .10 ;
yyradius := .10 ;
ll := llcorner (unitsquare shifted (-.5,-.5)) ;
lr := lrcorner (unitsquare shifted (-.5,-.5)) ;
ur := urcorner (unitsquare shifted (-.5,-.5)) ;
ul := ulcorner (unitsquare shifted (-.5,-.5)) ;
llx := ll shifted (xradius,0) ;
lly := ll shifted (0,yradius) ;
lrx := lr shifted (-xradius,0) ;
lry := lr shifted (0,yradius) ;
urx := ur shifted (-xradius,0) ;
ury := ur shifted (0,-yradius) ;
ulx := ul shifted (xradius,0) ;
uly := ul shifted (0,-yradius) ;
llxx := ll shifted (xxradius,0) ;
llyy := ll shifted (0,yyradius) ;
lrxx := lr shifted (-xxradius,0) ;
lryy := lr shifted (0,yyradius) ;
urxx := ur shifted (-xxradius,0) ;
uryy := ur shifted (0,-yyradius) ;
ulxx := ul shifted (xxradius,0) ;
ulyy := ul shifted (0,-yyradius) ;
lc := ll shifted (0,.5) ;
rc := lr shifted (0,.5) ;
tc := ul shifted (.5,0) ;
bc := ll shifted (.5,0) ;
enddef ;
def stop_predefined_shape_definition =
endgroup ;
enddef ;
start_predefined_shape_definition ;
predefined_shapes[ 0] := (origin--cycle) ;
predefined_shapes[ 5] := (llx--lrx{right}...rc...{left}urx--ulx{left}...lc...{right}cycle) ;
predefined_shapes[ 6] := (ll--lrx{right}...rc...{left}urx--ul--cycle) ;
predefined_shapes[ 7] := (ll--lrx{right}...rc...{left}urx--ul--cycle) rotatedaround(origin,180) ;
predefined_shapes[ 8] := (lr--ury{up}...tc...{down}uly--ll--cycle) ;
predefined_shapes[ 9] := (lr--ury{up}...tc...{down}uly--ll--cycle) rotatedaround(origin,180) ;
predefined_shapes[10] := (ll--lr--ur--ul--ll--ur--ul--ll--cycle) ;
predefined_shapes[11] := (ll--lr--ur--ul--ll--lr--ul--ll--cycle) ;
predefined_shapes[12] := (ll--lrx--ur--ulx--cycle) ;
predefined_shapes[13] := (llx--lr--urx--ul--cycle) ;
predefined_shapes[14] := (lly--bc--lry--ury--tc--uly--cycle) ;
predefined_shapes[15] := (llx--lrx--rc--urx--ulx--lc--cycle) ;
predefined_shapes[16] := (ll--lrx--rc--urx--ul--cycle) ;
predefined_shapes[17] := (ll--lrx--rc--urx--ul--cycle) rotatedaround(origin,180) ;
predefined_shapes[18] := (lr--ury--tc--uly--ll--cycle) ;
predefined_shapes[19] := (lr--ury--tc--uly--ll--cycle) rotatedaround(origin,180) ;
predefined_shapes[20] := (ll--lr--ur--ul--ll--llxx--ulxx--ul--ll--lr--ur--urxx--lrxx--cycle) ;
predefined_shapes[21] := (ul--ll--lr--ur--ul--ulyy--uryy--ur--ul--ll--lr--lryy--llyy--cycle) ;
predefined_shapes[22] := (ll--lrx--lry--ur--ulx--uly--cycle) ;
predefined_shapes[23] := (llx--lr--ury--urx--ul--lly--cycle) ;
predefined_shapes[24] := (ll--lr--ur--ul--cycle) ;
predefined_shapes[25] := (llx--lrx--lry--ury--urx--ulx--uly--lly--cycle) ;
predefined_shapes[26] := (ll--lrx--lry--ur--ul--cycle) ;
predefined_shapes[27] := (ll--lr--ury--urx--ul--cycle) rotatedaround(origin,180) ;
predefined_shapes[28] := (ll--lr--ury--urx--ul--cycle) ;
predefined_shapes[29] := (ll--lrx--lry--ur--ul--cycle) rotatedaround(origin,180) ;
predefined_shapes[30] := (bc{right}...{up}rc...tc{left}...{down}lc...{right}bc & bc--tc & tc{left}..{down}lc & lc--rc & rc{up}..tc{left}...{down}lc...{right}bc & cycle) rotated 45;
predefined_shapes[31] := (bc{right}...{up}rc...tc{left}...{down}lc...{right}bc & bc--tc & tc{left}..{down}lc & lc--rc & rc{up}..tc{left}...{down}lc...{right}bc & cycle) ;
predefined_shapes[32] := (ll{right}...{right}lry--ur--ul--ll--cycle) ;
predefined_shapes[33] := (ll{right}...{right}lry--ur--ul--ll--cycle--ul--ulx--ulx shifted(0,yyradius)--ur shifted(yyradius,yyradius)--lry shifted(yyradius,yyradius)--lry shifted(0,yyradius)--ur--ul--cycle ) ;
predefined_shapes[34] := (uly..tc..ury & ury..tc shifted (0,-2yradius)..uly & uly--lly & lly..bc..lry & lry--ury & ury..tc shifted (0,-2yradius)..uly & cycle ) ;
predefined_shapes[35] := (bc{right}...rc{up}...tc{left}...lc{down}...cycle) ;
predefined_shapes[36] := (ul--tc{right}..rc{down}..{left}bc--ll & ll..(xpart llx, ypart lc)..ul & cycle) ;
predefined_shapes[37] := (ul--tc{right}..rc{down}..{left}bc--ll & ll..(xpart llx, ypart lc)..ul & cycle) rotatedaround(origin,180) ;
predefined_shapes[38] := (ll--lc{up}..tc{right}..{down}rc--lr & lr..(xpart bc, ypart lly)..ll & cycle) ;
predefined_shapes[39] := (ll--lc{up}..tc{right}..{down}rc--lr & lr..(xpart bc, ypart lly)..ll & cycle) rotatedaround(origin,180) ;
predefined_shapes[40] := (ll--lr--ur--ul--ll--ur--ul--ll--lr--ul--ll--cycle) ;
predefined_shapes[41] := (ll--lr--ur--ul--ll--lr--rc--lc--ll--bc--tc--ul--ll & cycle) ;
predefined_shapes[42] := (ll--lr--origin shifted (+epsilon,0)--ur--ul--origin shifted (-epsilon,0)--cycle) ;
predefined_shapes[43] := (ll--ul--origin shifted (0,+epsilon)--ur--lr--origin shifted (0,-epsilon)--cycle) ;
predefined_shapes[45] := (bc--rc--tc--lc--cycle) ;
predefined_shapes[46] := (ll--ul--rc--cycle) ;
predefined_shapes[47] := (ll--ul--rc--cycle) rotatedaround(origin,180) ;
predefined_shapes[48] := (ul--ur--bc--cycle) rotatedaround(origin,180) ;
predefined_shapes[49] := (ul--ur--bc--cycle) ;
predefined_shapes[56] := (ll--lry--ury--ul--cycle) ;
predefined_shapes[57] := (ll--lry--ury--ul--cycle) rotatedaround(origin,180) ;
predefined_shapes[58] := (ll--ulx--urx--lr--cycle) ;
predefined_shapes[59] := (ll--ulx--urx--lr--cycle) rotatedaround(origin,180);
predefined_shapes[66] := (rc--origin shifted ( epsilon,0) --cycle & rc--origin--cycle ) ;
predefined_shapes[67] := (lc--origin shifted (-epsilon,0) --cycle & lc--origin--cycle ) ;
predefined_shapes[68] := (tc--origin shifted (0, epsilon) --cycle & tc--origin--cycle ) ;
predefined_shapes[69] := (bc--origin shifted (0,-epsilon) --cycle & bc--origin--cycle ) ;
predefined_shapes[75] := (lly--lry--ury--uly--cycle) rotatedaround(origin,180) ;
predefined_shapes[76] := (ll--lr--ur--uly--cycle) rotatedaround(origin,180) ;
predefined_shapes[77] := (ll--lr--ury--ul--cycle) rotatedaround(origin,180) ;
predefined_shapes[78] := (lly--lr--ur--ul--cycle) rotatedaround(origin,180) ;
predefined_shapes[79] := (ll--lry--ur--ul--cycle) rotatedaround(origin,180) ;
numeric predefined_shapes_xradius ; predefined_shapes_xradius := xradius ;
numeric predefined_shapes_yradius ; predefined_shapes_yradius := yradius ;
numeric predefined_shapes_xxradius ; predefined_shapes_xxradius := xxradius ;
numeric predefined_shapes_yyradius ; predefined_shapes_yyradius := yyradius ;
stop_predefined_shape_definition ;
vardef some_shape_path (expr type) =
if known predefined_shapes[type] : predefined_shapes[type] else : predefined_shapes[0] fi
enddef ;
def some_shape (expr shape_type, shape_width, shape_height, shape_linewidth, shape_linecolor, shape_fillcolor) =
begingroup ;
save p ; path p ;
p := some_shape_path (shape_type) xscaled shape_width yscaled shape_height ;
pickup pencircle scaled shape_linewidth ;
fill p withcolor shape_fillcolor ;
draw p withcolor shape_linecolor ;
endgroup ;
enddef ;
vardef drawpredefinedshape (expr t, p, lw, lc, fc) =
save pp ;
if t>1 : % normal shape
path pp ;
pp := some_shape_path(t) xyscaled(bbwidth(p), bbheight(p)) shifted center p ;
fill pp withcolor fc ;
draw pp withpen pencircle scaled lw withcolor lc ;
elseif t=1 : % background only
path pp ;
pp := fullsquare xyscaled(bbwidth(p), bbheight(p)) shifted center p ;
fill pp withcolor fc ;
else : % dimensions only
picture pp ; pp := nullpicture ;
setbounds pp to fullsquare xyscaled(bbwidth(p), bbheight(p)) shifted center p ;
draw pp ;
fi ;
enddef ;
vardef drawpredefinedline (expr t, p, lw, lc) =
if (t>0) and (length(p)>1) :
saveoptions ;
drawoptions(withpen pencircle scaled lw withcolor lc) ;
draw p ;
if t = 1 :
draw arrowheadonpath(p,1) ;
elseif t = 2 :
draw arrowheadonpath(reverse p,1) ;
elseif t = 3 :
for $ = p,reverse p :
draw arrowheadonpath($,1) ;
endfor ;
elseif t = 11 :
draw arrowheadonpath(p,1/2) ;
elseif t = 12 :
draw arrowheadonpath(reverse p,1/2) ;
elseif t = 13 :
for $=p,reverse p :
draw arrowheadonpath($,1) ;
endfor ;
for $=p,reverse p :
draw arrowheadonpath($,3/4) ;
endfor ;
elseif t = 21 :
for $=1/5,1/2,4/5 :
draw arrowheadonpath(p,$) ;
endfor ;
elseif t = 22 :
for $=1/5,1/2,4/5 :
draw arrowheadonpath(reverse p,$) ;
endfor ;
elseif t = 23 :
for $=p,reverse p :
draw arrowheadonpath($,1/4) ;
endfor ;
fi ;
fi ;
enddef ;
let drawshape = drawpredefinedshape ;
let drawline = drawpredefinedline ;
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