25 lines
641 B
TeX
25 lines
641 B
TeX
% light gray color
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\definecolor{lightgray}{gray}{0.7}
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% a grid with starting from #1 mesh #2 of width #3*#2 and height #4*#2
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\def\grid#1#2#3#4{
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% vertical lines
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\foreach\i in{0,...,#3}{
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\draw[color=lightgray]#1++(\i*#2,0)--++(0,#4*#2);
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}
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% horizontal lines
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\foreach\j in{0,...,#4}{
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\draw[color=lightgray]#1++(0,\j*#2)--++(#3*#2,0);
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}
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}
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% a square centered at #1 of side #2
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\def\square#1#2{
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\draw#1++(-0.5*#2,-0.5*#2)--++(#2,0)--++(0,#2)--++(-#2,0)--cycle;
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}
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% fill a square centered at #1 of side #2 and color #3
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\def\fillsquare#1#2#3{
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\fill[color=#3]#1++(-0.5*#2,-0.5*#2)--++(#2,0)--++(0,#2)--++(-#2,0)--cycle;
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}
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