お世話になります。

以下のソースにおいて、

\emDottedline{\C\B\A}に\emDottedline{\B\A}を重ねて描くと、

線分BA上の\picsquareだけずれが生じている事が分かります。

これはどういう理由なのでしょうか?

お時間あればご教授頂けると幸いです。

(texファイルとlogファイルは以下の通りです。)

%texファイル
\documentclass[a4paper,fleqn]{jarticle}
\usepackage{emathPh}
\usepackage{multido}

\begin{document}

\unitlength=15pt
\begin{zahyou}(-6,6)(-4,4)
\tenretu{A(2,0)[se];B(1,1)nw;C(3,2)ne}
\kuromaru{\A;\B;\C}
\emDottedline{\C\B\A}
\emDottedline{\B\A}
\end{zahyou}

\end{document}

%logファイル
This is pTeX, Version 3.1415926-p3.1.10 (sjis) (Web2C 7.5.7) (format=platex 2008.8.3)  12 AUG 2008 13:59
\write18 enabled.
**test.tex
(./test.tex
pLaTeX2e <2006/11/10>+0 (based on LaTeX2e <2005/12/01> patch level 0)
Babel <v3.8l> and hyphenation patterns for english, usenglishmax, ukenglish, ba
sque, bulgarian, coptic, welsh, czech, slovak, german, ngerman, danish, esperan
to, spanish, catalan, galician, estonian, farsi, finnish, french, irish, greek,
 monogreek, ancientgreek, croatian, hungarian, interlingua, ibycus, bahasa, ice
landic, italian, latin, mongolian, dutch, norsk, polish, portuguese, pinyin, ro
manian, russian, slovenian, samin, uppersorbian, serbian, swedish, turkish, ukr
ainian, dumylang, nohyphenation, loaded.
(c:/usr/local/share/texmf/tex/platex/base/jarticle.cls
Document Class: jarticle 2006/06/27 v1.6 Standard pLaTeX class
\c@@paper=\count81
(c:/usr/local/share/texmf/tex/latex/base/fleqn.clo
File: fleqn.clo 1998/08/17 v1.1c Standard LaTeX option (flush left equations)
\mathindent=\dimen118
)
(c:/usr/local/share/texmf/tex/platex/base/jsize10.clo
File: jsize10.clo 2006/06/27 v1.6 Standard pLaTeX file (size option)
)
\c@part=\count82
\c@section=\count83
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\c@subsubsection=\count85
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LaTeX Font Info:    Overwriting symbol font `mincho' in version `bold'
(Font)                  JY1/mc/m/n --> JY1/gt/m/n on input line 601.
\toclineskip=\dimen119
\@lnumwidth=\dimen120
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\heisei=\count90
)
(c:/musixtexmf/tex/platex/emath/emathPh.sty
Package: emathPh 2008/08/05 v 3.44

(c:/musixtexmf/tex/platex/emath_other/eepic/epic.sty
Enhancements to Picture Environment. Version 1.2 - Released June 1, 1986
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\@dotbox=\box41
\num@segments=\count97
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\@datafile=\read1
) (c:/musixtexmf/tex/platex/emath_other/eepic/eepic.sty
Extension to Epic and LaTeX. Version 1.1e - Released Dec 21, 1999
\@gphlinewidth=\count99
\@eepictcnt=\count100
\@tempdimc=\dimen128
\maxovaldiam=\dimen129
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) (c:/musixtexmf/tex/platex/emath/emath.sty
\EM@boxa=\box43
Package: emath 2008/07/14 v1.99 初等数学マクロパッケージ

(c:/musixtexmf/tex/platex/emath/emath2e.sty
(c:/usr/local/share/texmf/tex/latex/amslatex/amsmath.sty
Package: amsmath 2000/07/18 v2.13 AMS math features
\@mathmargin=\skip43

For additional information on amsmath, use the `?' option.
(c:/usr/local/share/texmf/tex/latex/amslatex/amstext.sty
Package: amstext 2000/06/29 v2.01

(c:/usr/local/share/texmf/tex/latex/amslatex/amsgen.sty
File: amsgen.sty 1999/11/30 v2.0
\@emptytoks=\toks15
\ex@=\dimen130
))
(c:/usr/local/share/texmf/tex/latex/amslatex/amsbsy.sty
Package: amsbsy 1999/11/29 v1.2d
\pmbraise@=\dimen131
)
(c:/usr/local/share/texmf/tex/latex/amslatex/amsopn.sty
Package: amsopn 1999/12/14 v2.01 operator names
)
\inf@bad=\count101
LaTeX Info: Redefining \frac on input line 211.
\uproot@=\count102
\leftroot@=\count103
LaTeX Info: Redefining \overline on input line 307.
\classnum@=\count104
\DOTSCASE@=\count105
LaTeX Info: Redefining \ldots on input line 379.
LaTeX Info: Redefining \dots on input line 382.
LaTeX Info: Redefining \cdots on input line 467.
\Mathstrutbox@=\box44
\strutbox@=\box45
\big@size=\dimen132
LaTeX Font Info:    Redeclaring font encoding OML on input line 567.
LaTeX Font Info:    Redeclaring font encoding OMS on input line 568.
\macc@depth=\count106
\c@MaxMatrixCols=\count107
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\c@parentequation=\count108
\dspbrk@lvl=\count109
\tag@help=\toks16
\row@=\count110
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\maxfields@=\count112
\andhelp@=\toks17
\eqnshift@=\dimen133
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\totwidth@=\dimen137
\lineht@=\dimen138
\@envbody=\toks18
\multlinegap=\skip44
\multlinetaggap=\skip45
\mathdisplay@stack=\toks19
LaTeX Info: Redefining \[ on input line 2666.
LaTeX Info: Redefining \] on input line 2667.
)
(c:/usr/local/share/texmf/tex/latex/amsfonts/amssymb.sty
Package: amssymb 2002/01/22 v2.2d

(c:/usr/local/share/texmf/tex/latex/amsfonts/amsfonts.sty
Package: amsfonts 2001/10/25 v2.2f
\symAMSa=\mathgroup5
\symAMSb=\mathgroup6
LaTeX Font Info:    Overwriting math alphabet `\mathfrak' in version `bold'
(Font)                  U/euf/m/n --> U/euf/b/n on input line 132.
))
(c:/musixtexmf/tex/platex/emath/emathC.sty
Package: emathC 2008/07/06 v0.62

(c:/usr/local/share/texmf/tex/latex/tools/calc.sty
Package: calc 2005/08/06 v4.2 Infix arithmetic (KKT,FJ)
\calc@Acount=\count113
\calc@Bcount=\count114
\calc@Adimen=\dimen139
\calc@Bdimen=\dimen140
\calc@Askip=\skip46
\calc@Bskip=\skip47
LaTeX Info: Redefining \setlength on input line 75.
LaTeX Info: Redefining \addtolength on input line 76.
\calc@Ccount=\count115
\calc@Cskip=\skip48
)
(c:/usr/local/share/texmf/tex/latex/base/ifthen.sty
Package: ifthen 2001/05/26 v1.1c Standard LaTeX ifthen package (DPC)
)
\c@tempcnta=\count116
\templa=\dimen141
\emath@toks@=\toks20
\Sett@width=\dimen142
)
(c:/musixtexmf/tex/platex/emath/emathE.sty
Package: emathE 2008/04/18 v1.02 拡張enumerate

(c:/musixtexmf/tex/platex/emath/emathEc.sty
Package: emathEc 2008/03/04 v0.06

(c:/usr/local/share/texmf/tex/latex/graphics/keyval.sty
Package: keyval 1999/03/16 v1.13 key=value parser (DPC)
\KV@toks@=\toks21
)
(c:/usr/local/share/texmf/tex/latex/tools/enumerate.sty
Package: enumerate 1999/03/05 v3.00 enumerate extensions (DPC)
\@enLab=\toks22
)
(c:/musixtexmf/tex/platex/emath/jquote.sty
Package: jquote 2008/03/07 v0.05
)
(c:/musixtexmf/tex/platex/emath/emathK.sty)
\kizami@ti=\count117
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\tkn@Enum@ang=\toks23
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\emtokena=\toks25
))
\c@marginpar=\count123
\templb=\dimen143
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\tempboxa=\box46
\tempboxb=\box47
\EMc@hizyosuu=\count124
\EMc@syou=\count125
\EMc@zyo@amari=\count126
\GCM=\count127
\zyo@@c=\count128
\hizyo@@c=\count129
\wari@@cnt=\count130
\wari@@cmax=\count131
\gyou@@c=\count132
\hidari@@p=\count133
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LaTeX Info: Redefining \to on input line 1658.
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\@ltxlinelen=\dimen146
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)
(c:/usr/local/share/texmf/tex/latex/graphics/trig.sty
Package: trig 1999/03/16 v1.09 sin cos tan (DPC)
)
\@tempdimd=\dimen147
\DHS@seq=\toks26
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LaTeX Info: Redefining \Deruta on input line 8420.
)
(c:/usr/local/share/texmf/tex/latex209/misc/multido.sty
(c:/usr/local/share/texmf/tex/plain/misc/multido.tex  v1.4, 93/01/14 <tvz>
\multido@count=\count135
\multidocount=\count136
\multido@stuff=\toks30
))
(./test.aux)
\openout1 = `test.aux'.

LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 5.
LaTeX Font Info:    ... okay on input line 5.
LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 5.
LaTeX Font Info:    ... okay on input line 5.
LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 5.
LaTeX Font Info:    ... okay on input line 5.
LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 5.
LaTeX Font Info:    ... okay on input line 5.
LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 5.
LaTeX Font Info:    ... okay on input line 5.
LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 5.
LaTeX Font Info:    ... okay on input line 5.
LaTeX Font Info:    Checking defaults for JY1/mc/m/n on input line 5.
LaTeX Font Info:    ... okay on input line 5.
LaTeX Font Info:    Checking defaults for JT1/mc/m/n on input line 5.
LaTeX Font Info:    ... okay on input line 5.
LaTeX Font Info:    Try loading font information for U+msa on input line 13.
 (c:/usr/local/share/texmf/tex/latex/amsfonts/umsa.fd
File: umsa.fd 2002/01/19 v2.2g AMS font definitions
)
LaTeX Font Info:    Try loading font information for U+msb on input line 13.

(c:/usr/local/share/texmf/tex/latex/amsfonts/umsb.fd
File: umsb.fd 2002/01/19 v2.2g AMS font definitions
) [1

] (./test.aux) ) 
Here is how much of TeX's memory you used:
 5402 strings out of 494374
 53416 string characters out of 1170793
 160181 words of memory out of 1500000
 8745 multiletter control sequences out of 10000+50000
 9210 words of font info for 39 fonts, out of 2000000 for 2000
 678 hyphenation exceptions out of 8191
 50i,9n,55p,292b,712s stack positions out of 3000i,500n,5000p,200000b,5000s

Output written on test.dvi (1 page, 1480 bytes).

▼関連発言
│
└◆7406:\emDottedlineのずれ [st] 08/12 14:01
　└◆7407:Re:\emDottedlineのずれ [tDB] 08/12 16:08
　　└◆7408:Re[2]:\emDottedlineのずれ [st] 08/12 16:33
　　　└◆7409:Re[3]:\emDottedlineのずれ [tDB] 08/12 17:32
　　　　└◆7410:Re[4]:\emDottedlineのずれ [st] 08/12 23:54
　　　　　└◆7411:Re[5]:\emDottedlineのずれ [tDB] 08/13 14:33<-last