3 data/sprites/ship.png: ship.pov pnmoutline gfx.mk
4 povray -GA -D +A +UA +W32 +H32 $< 2>/dev/null
5 pngtopnm ship.png >ship.pnm
6 ./pnmoutline <ship.pnm >data/sprites/ship.pnm
7 pnmtopng -transparent =white data/sprites/ship.pnm >$@
8 rm ship.png ship.pnm data/sprites/ship.pnm
10 data/sprites/rock%.png: rocks.pov gfx.mk
11 povray -Irocks.pov -D +H52 +W52 +K`echo "$@" | grep -o '[0-9][0-9]'` +Fp -O$@.pnm 2>/dev/null
12 pnmcrop < $@.pnm > $@-c.pnm
13 pnmtopng -transparent black < $@-c.pnm > $@