# Makefile to process POV-Ray lab hand-in files - ANIMATIONS
# Last edited on 2019-07-17 07:25:26 by stolfilocal

MAIN := main

INC_IMG_FILES := \
  ${wildcard *.inc *.png *.PNG *.ppm *.PPM *.pgm *.PGM \
    *.jpg *.JPG *.jpeg *.JPEG *.gif *.GIF *.bmp *.BMP \
    *.ttf *.TTF \
  }

OTHERINPUTS := \
  ${shell echo ${INC_IMG_FILES} | tr ' ' '\012' | grep -v -e 'main.*'}

# Large image size (e.g. still frames):
FULLWIDTH := 600
FULLHEIGHT := 400

# Medium image size (e.g. the final movie):
MEDWIDTH := 300
MEDHEIGHT := 200

# Small image size (e.g. the film strips):
SMALLWIDTH := 120
SMALLHEIGHT := 80

# Icon size on index page:
ICONHEIGHT := 80

# No need to change below here

# POV-Ray installation directories:
POVRAY := /usr/bin/povray
POVINC := /usr/share/povray-3.7/include/

TOPDIR := ../../..
POVTTF := ${TOPDIR}/hand-out/tt-fonts
POVFIL := ${TOPDIR}/hand-in/povray-output-filter.gawk

# These are defined with "=" rather than ":=" in order to defer expansion
DIRTAIL = ${shell pwd | sed -e 's:^.*/::'}
IMVIEW = display -title "${DIRTAIL}/%f"

.PHONY: \
  all still showstill \
  first showfirst \
  middle showmiddle \
  last showlast \
  strip showstrip \
  fast showfast \
  movie showmovie \
  cleanup \
  frame frameicon showframe

# all: middle showmiddle first last strip showstrip movie
# all: first middle last strip movie
all: first middle last strip showmiddle showstrip

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# "make strip" creates a strip with several frames:

STRIPNAME := ${MAIN}-s

STRIPWIDTH := ${SMALLWIDTH}
STRIPHEIGHT := ${SMALLHEIGHT}
STRIPRAYS := 2

STRIPCLOCKS := \
    0.0000 0.0417 0.0833 0.1250 0.1667 \
    0.2083 0.2500 0.2917 0.3333 0.3750 \
    0.4167 0.4583 0.5000 0.5417 0.5833 \
    0.6250 0.6667 0.7083 0.7500 0.7917 \
    0.8333 0.8750 0.9167 0.9583 1.0000
    
STRIPFRAMES := ${addprefix ${STRIPNAME}-,${addsuffix .png,${STRIPCLOCKS}}}

strip: ${STRIPNAME}.png

${STRIPNAME}.png: ${MAIN}.pov ${OTHERINPUTS}
	/bin/rm -f ${STRIPNAME}.png 
	for clock in ${STRIPCLOCKS} ; do \
          ${MAKE} NAME=${STRIPNAME} CLOCK=$$clock \
            WIDTH=${STRIPWIDTH} HEIGHT=${STRIPHEIGHT} \
            NRAYS=${STRIPRAYS} SHOW='+D' BORDER=1 \
            frame; \
        done
	${TOPDIR}/hand-in/tile-movie-frames.sh \
          -ncols 5 \
          ${STRIPNAME}.png \
          ${STRIPFRAMES}

showstrip:
	-${IMVIEW} ${STRIPNAME}.png

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# "make fast" creates a movie with 24 medium-size frames at speed × 4.

FASTNAME := ${MAIN}-f

FASTWIDTH := ${MEDWIDTH}
FASTHEIGHT := ${MEDHEIGHT}
FASTRAYS := 1

# Parameters for 24 frames, high-speed
FASTDELAY := 15
FASTCLOCKS := \
  0.0000 0.0417 0.0833 0.1250 0.1667 \
  0.2083 0.2500 0.2917 0.3333 0.3750 \
  0.4167 0.4583 0.5000 0.5417 0.5833 \
  0.6250 0.6667 0.7083 0.7500 0.7917 \
  0.8333 0.8750 0.9167 0.9583
    
FASTFRAMES := ${addprefix ${FASTNAME}-,${addsuffix .png,${FASTCLOCKS}}}

fast: ${FASTNAME}.gif

${FASTNAME}.gif: ${MAIN}.pov ${OTHERINPUTS}
	/bin/rm -f ${FASTNAME}.gif
	for clock in ${FASTCLOCKS} ; do \
          ${MAKE} NAME=${FASTNAME} CLOCK=$$clock \
            WIDTH=${FASTWIDTH} HEIGHT=${FASTHEIGHT} \
            NRAYS=${FASTRAYS} SHOW='-D' \
            frame; \
        done
	${TOPDIR}/hand-in/animate-movie-frames.sh \
          -delay ${FASTDELAY} \
          ${FASTNAME}.gif \
          ${FASTFRAMES}

showfast:
	-${IMVIEW} -delay ${FASTDELAY} ${FASTNAME}.gif

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# "make movie" creates a movie with many frames, normal speed.

MOVIEWIDTH := ${MEDWIDTH}
MOVIEHEIGHT := ${MEDHEIGHT}
MOVIERAYS := 2

MOVIENAME := ${MAIN}-m

# Parameters for 50 frames:
# MOVIEDELAY := 10
# MOVIECLOCKS := \
#   0.0000 0.0200 0.0400 0.0600 0.0800 \
#   0.1000 0.1200 0.1400 0.1600 0.1800 \
#   0.2000 0.2200 0.2400 0.2600 0.2800 \
#   0.3000 0.3200 0.3400 0.3600 0.3800 \
#   0.4000 0.4200 0.4400 0.4600 0.4800 \
#   0.5000 0.5200 0.5400 0.5600 0.5800 \
#   0.6000 0.6200 0.6400 0.6600 0.6800 \
#   0.7000 0.7200 0.7400 0.7600 0.7800 \
#   0.8000 0.8200 0.8400 0.8600 0.8800 \
#   0.9000 0.9200 0.9400 0.9600 0.9800
  
# Parameters for 80 frames:
# MOVIEDELAY := 6
# MOVIECLOCKS := \
#   0.0000 0.0125 0.0250 0.0375 0.0500 0.0625 0.0750 0.0875 \
#   0.1000 0.1125 0.1250 0.1375 0.1500 0.1625 0.1750 0.1875 \
#   0.2000 0.2125 0.2250 0.2375 0.2500 0.2625 0.2750 0.2875 \
#   0.3000 0.3125 0.3250 0.3375 0.3500 0.3625 0.3750 0.3875 \
#   0.4000 0.4125 0.4250 0.4375 0.4500 0.4625 0.4750 0.4875 \
#   0.5000 0.5125 0.5250 0.5375 0.5500 0.5625 0.5750 0.5875 \
#   0.6000 0.6125 0.6250 0.6375 0.6500 0.6625 0.6750 0.6875 \
#   0.7000 0.7125 0.7250 0.7375 0.7500 0.7625 0.7750 0.7875 \
#   0.8000 0.8125 0.8250 0.8375 0.8500 0.8625 0.8750 0.8875 \
#   0.9000 0.9125 0.9250 0.9375 0.9500 0.9625 0.9750 0.9875

# Parameters for 100 frames:
MOVIEDELAY := 6
MOVIECLOCKS := \
  0.0000 0.0100 0.0200 0.0300 0.0400 0.0500 0.0600 0.0700 0.0800 0.0900 \
  0.1000 0.1100 0.1200 0.1300 0.1400 0.1500 0.1600 0.1700 0.1800 0.1900 \
  0.2000 0.2100 0.2200 0.2300 0.2400 0.2500 0.2600 0.2700 0.2800 0.2900 \
  0.3000 0.3100 0.3200 0.3300 0.3400 0.3500 0.3600 0.3700 0.3800 0.3900 \
  0.4000 0.4100 0.4200 0.4300 0.4400 0.4500 0.4600 0.4700 0.4800 0.4900 \
  0.5000 0.5100 0.5200 0.5300 0.5400 0.5500 0.5600 0.5700 0.5800 0.5900 \
  0.6000 0.6100 0.6200 0.6300 0.6400 0.6500 0.6600 0.6700 0.6800 0.6900 \
  0.7000 0.7100 0.7200 0.7300 0.7400 0.7500 0.7600 0.7700 0.7800 0.7900 \
  0.8000 0.8100 0.8200 0.8300 0.8400 0.8500 0.8600 0.8700 0.8800 0.8900 \
  0.9000 0.9100 0.9200 0.9300 0.9400 0.9500 0.9600 0.9700 0.9800 0.9900

MOVIEFRAMES := ${addprefix ${MOVIENAME}-,${addsuffix .png,${MOVIECLOCKS}}}

movie: ${MOVIENAME}.gif

${MOVIENAME}.gif: ${MAIN}.pov ${OTHERINPUTS}
	/bin/rm -f ${MOVIENAME}.gif
	for clock in ${MOVIECLOCKS} ; do \
          ${MAKE} NAME=${MOVIENAME} CLOCK=$$clock \
            WIDTH=${MOVIEWIDTH} HEIGHT=${MOVIEHEIGHT} \
            NRAYS=${MOVIERAYS} SHOW='-D' \
            frame; \
        done
	${TOPDIR}/hand-in/animate-movie-frames.sh \
          -delay ${MOVIEDELAY} \
          ${MOVIENAME}.gif \
          ${MOVIEFRAMES}

showmovie:        
	-${IMVIEW} -delay ${MOVIEDELAY} ${MOVIENAME}.gif

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Still frames

STILLWIDTH := ${FULLWIDTH}
STILLHEIGHT := ${FULLHEIGHT}
STILLRAYS := 2

# "make first" shows the first frame of the movie:
#
first: 
	${MAKE} CLOCK=0.0000 still;

showfirst: 
	${MAKE} CLOCK=0.0000 showstill;

# "make middle" shows the middle frame of the movie:
#
middle: 
	${MAKE} CLOCK=0.5000 still;

showmiddle: 
	${MAKE} CLOCK=0.5000 showstill;

# "make last" shows the last frame of the movie:
#

LASTCLOCK := 1.0000
# LASTCLOCK := ${word ${words ${MOVIECLOCKS}}, ${MOVIECLOCKS}}

last: 
	${MAKE} CLOCK=${LASTCLOCK} still;

showlast: 
	${MAKE} CLOCK=${LASTCLOCK} showstill;

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# "make cleanup" removes all created files
# Take care not to remove "*-orig.*"

cleanup: 
	-/bin/rm -f ${MAIN}.log ${MAIN}-*.log
	-/bin/rm -f ${MAIN}-[01].[0-9][0-9][0-9][0-9].png
	-/bin/rm -f ${STRIPNAME}.png ${STRIPNAME}-[01].[0-9][0-9][0-9][0-9].png
	-/bin/rm -f ${FASTNAME}.gif ${FASTNAME}-[01].[0-9][0-9][0-9][0-9].png
	-/bin/rm -f ${MOVIENAME}.gif ${MOVIENAME}-[01].[0-9][0-9][0-9][0-9].png
	-/bin/rm -f ${MAIN}-i.png ${MAIN}-*-i.png

######################################################################
# Commands for a specific frame:
# Caller must define ${CLOCK}.
#

CLOCK := CLOCK.IS.UNDEFINED
ifneq "${CLOCK}" "CLOCK.IS.UNDEFINED"

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# "make still CLOCK=N.NNNN" creates a frame with specified clock value:
#
STILLNAME := ${MAIN}

still: 
	${MAKE} NAME=${STILLNAME} CLOCK=`printf "%6.4f" ${CLOCK}`  \
          WIDTH=${STILLWIDTH} HEIGHT=${STILLHEIGHT} \
          NRAYS=${STILLRAYS} SHOW='+D' \
          frame frameicon

showstill:
	${MAKE} NAME=${STILLNAME} CLOCK=`printf "%6.4f" ${CLOCK}` \
          WIDTH=${STILLWIDTH} HEIGHT=${STILLHEIGHT} \
          NRAYS=${STILLRAYS} SHOW='+D' \
          showframe

######################################################################
# General-purpose commands used by the above:
# Caller must define ${CLOCK}, ${NAME}, ${WIDTH}, ${HEIGHT}, ${NRAYS}.
#
NAME := NAME.IS.UNDEFINED
ifneq "${NAME}" "NAME.IS.UNDEFINED"
WIDTH := WIDTH.IS.UNDEFINED
ifneq "${WIDTH}" "WIDTH.IS.UNDEFINED"
HEIGHT := HEIGHT.IS.UNDEFINED
ifneq "${HEIGHT}" "HEIGHT.IS.UNDEFINED"
NRAYS := NRAYS.IS.UNDEFINED
ifneq "${NRAYS}" "NRAYS.IS.UNDEFINED"

FRAME := ${NAME}-${CLOCK}
FRAMEICON := ${FRAME}-i
FRAMEBORDER := 0

frame: ${FRAME}.png

frameicon: ${FRAMEICON}.png

showframe: 
	-${IMVIEW} ${FRAME}.png

${FRAME}.png: ${MAIN}.pov ${OTHERINPUTS}
	@echo "OTHERINPUTS = ${OTHERINPUTS}"
	-/bin/rm -f ${FRAME}.png
	${POVRAY} +K${CLOCK} \
            +FN +Q9 +MB1 \
            +W${WIDTH} +H${HEIGHT} \
            +AM1 +A0.0 +R${NRAYS} \
            ${SHOW} \
            +L${POVINC} \
            +L${POVTTF} \
	    +I${MAIN}.pov \
	    +O${FRAME}.png \
            2>&1 \
          | ${POVFIL}

endif
endif
endif
endif
# End ${NAME}, ${WIDTH}, ${HEIGHT}, ${NRAYS} section
######################################################################

endif
# End ${CLOCK} section
######################################################################

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# "make absent.png" builds the dummy still-frame for absentees:

absent.png: Makefile
	ppmmake 'rgbi:0.75/0.75/0.75' ${STILLWIDTH} ${STILLHEIGHT} \
          | pnmdepth 255 \
          | ppmquant 254 \
          | convert PPM:- absent.png
	-${IMVIEW} absent.png
        
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# "make missing.png" builds the dummy still for missing/broken hand-ins:

missing.png: Makefile
	ppmmake 'rgbi:0.80/0.15/0.15' ${STILLWIDTH} ${STILLHEIGHT} \
          | pnmdepth 255 \
          | ppmquant 254 \
          | convert PPM:- missing.png
	-${IMVIEW} missing.png

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Patern rules for icon images:

%-i.png: %.png
	convert $*.png \
            -geometry "x${ICONHEIGHT}" \
            +profile '*' \
            -colors 254 \
          $*-i.png

######################################################################