49 lines
1.2 KiB
TeX
49 lines
1.2 KiB
TeX
% sqrt(3)/2
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\def\sqrtThOT{0.866}
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% sqrt(3)
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\def\sqrtTh{1.732}
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% pi
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\def\pival{3.14159}
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% base vectorsj
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\def\Lo{(1.5,\sqrtThOT)}
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\def\Lt{(1.5,-\sqrtThOT)}
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\def\mLo{(-1.5,-\sqrtThOT)}
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\def\mLt{(-1.5,\sqrtThOT)}
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% filled square at #1 of side-length #2
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\def\fullsquare#1#2{\fill#1++(-#2,-#2)--++(#2,0)--++(#2,0)--++(0,#2)--++(0,#2)--++(-#2,0)--++(-#2,0)--++(0,-#2)--++(0,-#2);}
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% in color
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\def\fullsquarecolor#1#2#3{\fill[color=#3]#1++(-#2,-#2)--++(#2,0)--++(#2,0)--++(0,#2)--++(0,#2)--++(-#2,0)--++(-#2,0)--++(0,-#2)--++(0,-#2);}
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% type-a site at #1
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\def\asite#1{\fill#1circle(.1);}
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% in color
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\def\asitec#1#2{\fill[color=#2]#1circle(.1);}
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% type-b site at #1
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\def\bsite#1{\fullsquare{#1}{.1}}
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% in color
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\def\bsitec#1#2{\fullsquarecolor{#1}{.1}{#2}}
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% base cell with a site at #1
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\def\cell#1{
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\draw#1--++(0:1);
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\draw#1--++(120:1);
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\draw#1--++(240:1);
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\asite{#1}
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\draw#1++(1,0)--++(0:-1);
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\draw#1++(1,0)--++(120:-1);
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\draw#1++(1,0)--++(240:-1);
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\bsite{#1++(1,0)}
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}
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% grpahene grid at #1 of width #2 and height #3
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\def\graphene#1#2#3{
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\foreach \i in {0,...,#2}{
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\foreach \j in {0,...,#3}{
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\cell{#1++(\i*3,-2*\j*\sqrtThOT)}
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\cell{#1++(\i*3+1.5,\sqrtThOT-2*\j*\sqrtThOT)}
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}
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}
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}
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