#
#	Makefile for http://www.teaser.fr/~amajorel/marble/
#	AYM 2004-11-14
#

LEVELS =		\
  l1_practice.ppm	\
  l2_beginner.ppm	\
  l3_intermediate.ppm	\
  l4_aerial.ppm		\
  l5_silly.ppm		\
  l6_ultimate.ppm

LEVELS_PNG =		\
  l1_practice.png	\
  l2_beginner.png	\
  l3_intermediate.png	\
  l4_aerial.png		\
  l5_silly.png		\
  l6_ultimate.png

all: $(LEVELS_PNG) marble-all.png marble-all-small.png

marble-all.png: marble-all.ppm
	pnmtopng -compression 9 marble-all.ppm >$@

marble-all-small.png: marble-all.ppm
	pnmscale 0.25 marble-all.ppm					\
	  | pnmdepth 7							\
	  | pnmtopng -compression 9 >$@

marble-all.ppm: $(LEVELS)
	pnmcat -lr $(LEVELS) >$@

.SUFFIXES: .ppm .png
.ppm.png:
	pnmtopng -compression 9 $< >$@