51 lines
1.5 KiB
Makefile
51 lines
1.5 KiB
Makefile
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gifs = ghostRightarrow.gif
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density=-r90x90
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.SUFFIXES:
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.SUFFIXES: .tex .gif
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# translate ps file to ppm, crop to minimum background, and translate ppm
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# to gif with white (background) transparent
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#
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.tex.gif:
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echo | latex $* &&\
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dvips -f < $*.dvi |\
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gs -q -dNOPAUSE -dSAFER -sDEVICE=ppmraw -sOutputFile=-\
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${density} - |\
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pnmcrop |\
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ppmtogif -transparent white > $*.gif
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rm -f $*.dvi $*.log *.aux
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test -f $*.gif && chmod 644 $*.gif
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all: ${gifs}
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# make ghostRightarrow.gif a completely transparent version of Rightarrow.ps
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#
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# translate ps to gif as above but w/o making white transparent, map black
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# to white, convert to ppm, and convert back to gif with white transparent
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#
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# could skip intermediate conversion to gif if we could map black to white
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# with some ppm tool
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#
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# it seems like should be able to replace last three steps with
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# giftrans -g '#000000=#ffffff' -t '#ffffff'
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# or at least
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# giftrans -g '#000000=#ffffff' | giftrans -t '#ffffff'
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# but giftrans changes only the first white color it sees, not all
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#
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ghostRightarrow.gif: Rightarrow.tex
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echo | latex Rightarrow &&\
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dvips -f < Rightarrow.dvi |\
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gs -q -dNOPAUSE -dSAFER -sDEVICE=ppmraw -sOutputFile=-\
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${density} - |\
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pnmcrop |\
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ppmtogif |\
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giftrans -g '#000000=#ffffff' |\
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giftopnm |\
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ppmtogif -transparent white > $*.gif
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rm -f Rightarrow.dvi Rightarrow.log Rightarrow.aux
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test -f $*.gif && chmod 644 $*.gif
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clean: ; rm -f *.gif Make.out
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