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14\writestatus { loading }{ MetaPost Graphics Grids }
15
16\unprotect
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138\startuseMPgraphic { meta:grd:basegrid }
139 begingroup ;
140
141 save sc , dx , dy , wd , ht , ox , oy , ax , ay ;
142
143 sc = \directdummyparameter \c!factor \directdummyparameter \c!scale ;
144 dx = \MPdpar \directdummyparameter \c!dx sc ;
145 dy = \MPdpar \directdummyparameter \c!dy sc ;
146 wd = \directdummyparameter \c!nx dx ;
147 ht = \directdummyparameter \c!ny dy ;
148 ox = \MPdpar \directdummyparameter \c!xoffset \relax ;
149 oy = \MPdpar \directdummyparameter \c!yoffset \relax ;
150
151 if " \directdummyparameter\c!align " = " \v!middle " :
152 ax = \MPdpar \directdummyparameter \c!dx 2
153 ay = \MPdpar \directdummyparameter \c!dy 2
154 else :
155 ax = 0 ;
156 ay = 0 ;
157 fi ;
158
159 draw image (
160 for i = 0 step dx until wd : draw ( i , 0 ) -- ( i , ht ) ; endfor ;
161 for i = 0 step dy until ht : draw ( 0 , i ) -- ( wd , i ) ; endfor ;
162 )
163 withpen pencircle scaled \MPdpar \directdummyparameter \c!rulethickness \space
164 withcolor " \directdummyparameter\c!rulecolor " ;
165
166 draw image (
167 if \directdummyparameter \c!xstep > 0 :
168 for i = 1 step \directdummyparameter \c!xstep until \directdummyparameter \c!nx :
169 draw thetextext . bot ( decimal i , ( i dx ax , oy ) ) ;
170 endfor ;
171 fi ;
172 if \directdummyparameter \c!ystep > 0 :
173 for i = 1 step \directdummyparameter \c!ystep until \directdummyparameter \c!ny :
174 draw thetextext . lft ( decimal i , ( ox , i dy ay ) ) ;
175 endfor ;
176 fi ;
177 )
178 withcolor " \directdummyparameter\c!color " ;
179
180 endgroup ;
181\stopuseMPgraphic
182
183\def \typo_grid_base [# 1 ]
184 { \dontleavehmode
185 \hbox \bgroup
186 \getdummyparameters
187 [ \c!nx = 1 0 , \c!ny = 1 0 ,
188 \c!dx = . 5 , \c!dy = . 5 ,
189 \c!xstep = 0 , \c!ystep = 0 ,
190 \c!unit = \s!cm , \c!scale = 1 , \c!factor = 1 ,
191 \c!offset = . 2 5 \exheight ,
192 \c!xoffset = \directdummyparameter \c!offset ,
193 \c!yoffset = \directdummyparameter \c!offset ,
194 \c!align = ,
195 \c!color = \currentcolorname ,
196 \c!rulecolor = \currentcolorname ,
197 \c!rulethickness = \linewidth ,
198 # 1 ]
199 \usedummystyleandcolor \c!style\c!color
200 \setexpandeddummyparameter \c!dx { \directdummyparameter \c!dx \directdummyparameter \c!unit }
201 \setexpandeddummyparameter \c!dy { \directdummyparameter \c!dy \directdummyparameter \c!unit }
202 \useMPgraphic { meta:grd:basegrid }
203 \egroup }
204
205\unexpanded \def \basegrid
206 { \dosingleempty \typo_grid_base }
207
208\let \grid\basegrid
209
210\protect \endinput
211 |