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% Copyright 2006 2015 Ovidiu Gheorghies, Radu-George Radulescu
% Licensed under the Apache License, Version 2.0.
if known _metauml_base_mp:
expandafter endinput
fi;
_metauml_base_mp:=1;
% Sadly, this copy of the macro is needed to prevent multiple file loads being shown by MetaPost.
% The guard values (such as _metauml_mp) do ensure that the file isn't loaded multiple times,
% but this macro makes sure that MetaPost won't try to load the file and display a message for that.
def inputonce text libraryFile=
if not known scantokens ("_" & str libraryFile & "_mp"):
%includeonce% show "Loading " & str libraryFile;
scantokens ("input " & str libraryFile);
else:
%includeonce% show str libraryFile & " already loaded.";
fi;
enddef;
inputonce util_log;
vardef markPoint(text p)(text color) =
draw p withpen pencircle scaled 1 withcolor color;
enddef;
vardef drawLine(text pA)(text pB)(text base) =
draw pA--pB;
enddef;
vardef drawArrow(text pA)(text pB)(text base) =
numeric dx, dy;
dx = xpart(pB - pA);
dy = ypart(pB - pA);
numeric alfa;
alfa = angle(dx, dy);
pair pC, pD;
pC := (0, base/2);
pC := pC rotated (alfa) shifted pA;
pD := (0, base/2);
pD := pD rotated (180+alfa) shifted pA;
%fill pA--pC--pB--pD--cycle withcolor .8white;
draw pA--pB;
draw pB--pC;
draw pB--pD;
enddef;
vardef drawTriangle(text pA)(text pB)(text base) =
numeric dx, dy;
dx = xpart(pB - pA);
dy = ypart(pB - pA);
numeric alfa;
alfa = angle(dx, dy);
pair pC, pD;
pC := (0, base/2);
pC := pC rotated (alfa) shifted pA;
pD := (0, base/2);
pD := pD rotated (180+alfa) shifted pA;
fill pA--pC--pB--pD--cycle withcolor white;
draw pA--pC;% withcolor red;
draw pA--pD;% withcolor green;
draw pB--pC;% withcolor blue;
draw pB--pD;
enddef;
vardef drawDiamond(text pA)(text pB)(text height) =
numeric dx, dy;
dx = xpart(pB - pA);
dy = ypart(pB - pA);
numeric alfa;
alfa = angle(dx, dy);
numeric width;
width = _length(pA)(pB);
path diamond;
diamond = (0,0)--(width/2, height/2)--(width, 0)--(width/2, -height/2)--cycle;
fill diamond rotated alfa shifted pA withcolor white;
draw diamond rotated alfa shifted pA;
enddef;
vardef drawDiamondBlack(text pA)(text pB)(text height) =
numeric dx, dy;
dx = xpart(pB - pA);
dy = ypart(pB - pA);
numeric alfa;
alfa = angle(dx, dy);
numeric width;
width = _length(pA)(pB);
path diamond;
diamond = (0,0)--(width/2, height/2)--(width, 0)--(width/2, -height/2)--cycle;
fill diamond rotated alfa shifted pA;
enddef;
vardef drawCrossedCircle(text pA)(text pB)(text height) =
numeric dx, dy;
dx = xpart(pB - pA);
dy = ypart(pB - pA);
numeric alfa;
alfa = angle(dx, dy);
numeric width;
width = _length(pA)(pB);
pair pC, pD;
pC := (width/2, height/2 + 1);
pC := pC rotated (alfa) shifted pA;
pD := (width/2, -height/2 - 1);
pD := pD rotated (alfa) shifted pA;
fill pA..pB..pA -- cycle withcolor white;
draw pA -- pB;
draw pC -- pD;
draw pA .. pB .. pA;
enddef;
vardef drawSemiCircle(text pA)(text pB)(text height) =
numeric dx, dy;
dx = xpart(pB - pA);
dy = ypart(pB - pA);
numeric alfa;
alfa = angle(dx, dy);
numeric width;
width = _length(pA)(pB);
pair pC, pD;
pC := (width/2 + 5, height/2 + 1);
pC := pC rotated (alfa) shifted pB;
pD := (width/2 + 5, -height/2 - 1);
pD := pD rotated (alfa) shifted pB;
draw pC .. pA .. pD;
enddef;
vardef drawCircle(text pA)(text pB)(text height) =
fill pA..pB..pA -- cycle withcolor white;
draw pA .. pB .. pA;
enddef;
vardef drawLine(expr my_path) =
draw my_path;
enddef;
vardef drawLineDashed(expr my_path) =
draw my_path dashed evenly;
enddef;
vardef drawNothing(text pA)(text pB)(text base) =
enddef;
def shorterLineEndPoint(text pA)(text pB)(text delta) =
(xpart(pA) + _dx(pA)(pB)*(1 - delta/_length(pA)(pB)), ypart(pA) + _dy(pA)(pB) * (1 - delta/_length(pA)(pB)) )
enddef;
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