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Compiler principle, a simple drawing tool
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Simple function drawing language & lt; 1 & gt; sentences to realize simple function drawing & nbsp; & nbsp; & nbsp; & nbsp; for-draw & nbsp; & nbsp; & nbsp; scale & nbsp; & nbsp; & nbsp; rotation (ROT) & nbsp; & nbsp; & nbsp; coordinate translation (origin) & nbsp; & nbsp; notes & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; (-- or /) & lt; 2 & gt; The coordinate system of the screen (window) & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; the upper left corner is the origin & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X direction grows from left to right & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; Y direction grows from top to bottom (opposite to the general coordinate system direction) & nbsp;
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