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% experimental2Dsetup.mp
% L. Nobre G.
% 2002
verbatimtex
\documentclass{article}
\usepackage{palatino}
\usepackage{concmath}
\usepackage{ccfonts}
\begin{document}
etex
beginfig(1);
% linecap := squared;
numeric salto, shif, rotang, cfac, posang;
numeric innerray, outerray, midleray, thebiray, otherray;
numeric midmidcir, midotharc, lblfac, wavecray, midwavarc;
path loricir, roricir, baserec, sampleh, wavecarc;
path innercirc, outercirc, midlecirc, otherarch;
path oridirh, oridirn, oridirp, oridirv, oridire;
path dirhoriz, dirnegat, dirposit, dirverti, direff;
path lowcut, higcut, glassre, wavecarch, field;
pair midmidcirpos, midotharcpos, midwavarcpos, mideffcirpos;
pen thickpen;
color samplecolor, magnetcolor, samplebordercolor;
picture lblpiplu, lblalpha, lblwavec, lblqu, lblno, lblfield;
numeric hei, wid, thi, pro, pol, mar;
path themagnet, effcirc, diry, oridiry;
numeric circleray, squareray, glasssize, effang, effraya, effrayb;
picture lblx, lbly, lbleff;
numeric mideffcir, yray;
pair lastoridire;
pickup pencircle scaled 0.15mm;
thickpen = pencircle scaled 1.7bp;
samplecolor = 0.88white;
magnetcolor = 0.37white;
samplebordercolor = 0.1white;
% samplecolor = (0.85,0.9,0.8);
% magnetcolor = (0.2,0.27,0.58);
% samplebordercolor = blue;
salto = 1mm;
rotang = 7;
posang = -28;
effang = -20;
shif = 50salto;
thi = 5salto;
pol = 25salto;
pro = 8salto;
wid = 58salto;
cfac = 0.5;
lblfac = 1.5;
innerray = 27salto;
circleray = 0.93innerray;
squareray = 0.93circleray;
glasssize = 0.42squareray;
outerray = 60salto;
midleray = 55salto;
yray = 53salto;
thebiray = 145salto;
otherray = 115salto;
wavecray = 0.5*(thebiray+otherray);
effraya = 0.45*(midleray+otherray);
effrayb = 0.56*(midleray+otherray);
innercirc = fullcircle scaled innerray;
outercirc = fullcircle scaled outerray;
midlecirc = (halfcircle cutbefore (origin--dir(90+posang)))
scaled midleray;
midmidcir = 0.5*length midlecirc;
midmidcirpos = point midmidcir of midlecirc;
effcirc = ((halfcircle cutbefore (origin--dir(90+effang)))
cutafter (origin--up))
scaled effraya;
mideffcir = 0.5*length effcirc;
mideffcirpos = point mideffcir of effcirc;
otherarch = ((halfcircle cutbefore (origin--dir(90+posang)))
cutafter (origin--up))
scaled otherray;
midotharc = 0.5*length otherarch;
midotharcpos = point midotharc of otherarch;
wavecarch = ((halfcircle cutafter (origin--dir(90+rotang)))
cutbefore (origin--up))
scaled wavecray;
midwavarc = 0.5*length wavecarch;
midwavarcpos = point midwavarc of wavecarch;
oridirh = origin--0.5*outerray*left;
oridirv = origin--0.5*thebiray*up;
oridirn = origin--0.5*thebiray*dir(90+rotang);
oridirp = origin--0.5*wavecray*dir(90+posang);
oridiry = origin--0.5*yray*dir(180+posang);
lastoridire = 0.5*effrayb*dir(90+effang);
oridire = origin--lastoridire;
dirhoriz = oridirh cutbefore innercirc;
dirverti = oridirv cutbefore innercirc;
dirnegat = oridirn cutbefore innercirc;
dirposit = oridirp cutbefore innercirc;
direff = oridire cutbefore innercirc;
diry = oridiry cutbefore innercirc;
field = (0.5innerray,0)--(0.5wid-salto,0);
loricir = halfcircle scaled circleray rotated 90;
roricir = halfcircle scaled circleray rotated 270;
baserec = (unitsquare shifted (-0.5*(1,1)))
xscaled 2
scaled squareray;
glassre = (unitsquare shifted (-0.5*(1,1)))
yscaled (13.0/6.0)
scaled glasssize;
lowcut = subpath (0,1) of baserec;
higcut = subpath (2,3) of baserec;
sampleh = buildcycle( higcut, loricir, reverse lowcut, roricir );
draw glassre rotated 90 dashed evenly withcolor (cfac*white);
% draw glassre rotated rotang dashed evenly withcolor (cfac*(white-blue));
fill glassre rotated posang withcolor samplecolor;
draw glassre rotated posang withcolor samplebordercolor;
draw sampleh rotated posang withpen thickpen withcolor blue;
drawarrow reverse midlecirc;
drawarrow reverse otherarch;
drawarrow wavecarch;
drawarrow reverse effcirc;
draw dirhoriz dashed evenly scaled 2;
draw dirverti dashed evenly scaled 2;
drawarrow dirnegat withpen thickpen;
drawarrow dirposit withpen thickpen;
drawarrow direff withpen thickpen;
drawarrow reverse field withpen thickpen;
drawarrow direff withpen thickpen;
drawarrow diry withpen thickpen;
lblpiplu = btex $\alpha = \frac{\pi}{2}+\beta$ etex scaled lblfac;
lblalpha = btex $\beta$ etex scaled lblfac;
lblwavec = btex $\Psi$ etex scaled lblfac;
lblqu = btex $\vec{q}\,$ etex scaled lblfac;
lblno = btex $\vec{n}_0$ etex scaled lblfac;
lblfield = btex $\vec{B}$ etex scaled lblfac;
lblx = btex $x$ etex scaled lblfac;
lbly = btex $y$ etex scaled lblfac;
lbleff = btex $\beta_{\mbox{\small eff}}$ etex scaled lblfac;
label.ulft( lblpiplu, midmidcirpos );
label.top( lblalpha, midotharcpos );
label.top( lblwavec, midwavarcpos );
label.llft( lblqu, point 0.7 of dirnegat );
label.lrt( lblx, point 0.7 of dirposit );
label.top( lblfield, point 0.5 of field );
label.llft( lbly, point 0.5 of diry );
label.top( lbleff, mideffcirpos );
label.top( lblno, lastoridire );
hei = pol+4thi;
mar = (hei-2*thi-pol)*0.5;
z100 = (pro,mar);
z0 = (wid,pol)*0.5;
z1 = z0 + z100;
z2 = z1 + (thi,0);
z3 = (xpart z2, pol*0.5+mar-hei);
z4 = (-xpart z2, ypart z3);
z5 = (-xpart z2, ypart z2);
z6 = (-xpart z1, ypart z1);
z7 = (-xpart z0, ypart z0);
z8 = (xpart z7, -pol*0.5);
z9 = z8 - z100;
z10 = z9 - (0,thi);
z11= (xpart z1, ypart z10);
z12= z11+ (0,thi);
z13= (xpart z0, -ypart z0);
themagnet = z0--z1--z2--z3--z4--z5--z6--z7--
z8--z9--z10--z11--z12--z13--cycle;
fill themagnet withcolor magnetcolor;
draw themagnet withpen thickpen;
endfig;
verbatimtex
\end{document}
etex
end;
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