44 lines
1.2 KiB
Text
44 lines
1.2 KiB
Text
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\begin{tikzpicture}[scale=0.66]
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\begin{pgfscope}
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\clip(-2,-2) rectangle (2,2);
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\begin{scope}[shift={(.5,.5)}]
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\draw[densely dotted] (-3,-3) grid (3,3);
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\end{scope}
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\draw[fill] (1,0) circle (1.5pt) node[right]
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{e};
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\draw[fill] (0,1) circle (1.5pt) node[above left]
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{n};
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\draw[fill] (1,1) circle (1.5pt) node[above right]
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{ne};
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\draw[fill] (1,-1) circle (1.5pt) node[below right]
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{se};
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\draw[thick,->] (0,0) -- (1,0);
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\draw[thick,->] (0,0) -- (0,1);
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\draw[thick,->] (0,0) -- (1,1);
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\draw[thick,->] (0,0) -- (1,-1);
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\draw[fill] (-1,0) circle (1.5pt) node[left]
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{w};
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\draw[fill] (0,-1) circle (1.5pt) node[below right]
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{s};
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\draw[fill] (-1,-1) circle (1.5pt) node[below left]
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{sw};
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\draw[fill] (-1,1) circle (1.5pt) node[above left]
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{nw};
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\draw[dashed,->] (0,0) -- (-1,-0);
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\draw[dashed,->] (0,0) -- (-0,-1);
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\draw[dashed,->] (0,0) -- (-1,-1);
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\draw[dashed,->] (0,0) -- (-1, 1);
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\end{pgfscope}
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\node at (3,0) {\Large$\Rightarrow$};
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\begin{pgfscope}
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\begin{scope}[xshift=6cm]
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\clip (-1.9,-1.9) rectangle (1.9,1.9);
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\fill[gray] (-2,-2) rectangle (2,2);
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\draw[step=0.5cm,line width=3pt,white] (-2,-2) grid (2,2);
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\draw[step=0.5cm,black] (-2,-2) grid (2,2);
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\end{scope}
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\end{pgfscope}
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\end{tikzpicture}
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