# Last edited on 2011-05-07 08:19:32 by stolfi

SHELL := /bin/bash

#######################################################################
# Caller must define
#   ${OUT_DIR}   = output directory.
#   ${NAME}      = name of image to render minus "${OUT_DIR}/" and ".png".
#   ${WIDTH}     = width of image(s).
#   ${HEIGHT}    = height of image(s).
#   ${NRAYS}     = subsampling order (1,2,...).
#   ${NFRAMES}   = number of frames to render (required render-movie or render-strip).
#
# Optionally also:
#   ${CLOCK}     = Clock value (required for render-still).
#   ${SHOW}      = "YES" to display the image after rendering.

ifneq "/${OUT_DIR}" "/"
ifneq "/${NAME}" "/"
ifneq "/${WIDTH}" "/"
ifneq "/${HEIGHT}" "/"
ifneq "/${NRAYS}" "/"
ifneq "/${NFRAMES}" "/"

.PHONY:: render-strip clean-strip
  
CLOCK_FORMAT := "%8.6f"
VIEW_STRIP := display -title "%f"

CLOCKS := ${shell compute-movie-clocks.sh 0.0 1.0 ${NFRAMES} ${CLOCK_FORMAT}}

FRAME_PNGS := ${addprefix ${OUT_DIR}/${NAME}-,${addsuffix .png,${CLOCKS}}}

${OUT_DIR}: 
	mkdir -p ${OUT_DIR}

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

STRIP_NAME := ${NAME}-str
STRIP_PNG := ${OUT_DIR}/${STRIP_NAME}.png

render-strip: ${OUT_DIR} clean-strip ${STRIP_PNG}

${STRIP_PNG}: 
	for clock in ${CLOCKS} ; do \
          ${MAKE} -f POVRAY-FRAME.make \
            NAME=${NAME} CLOCK=$$clock \
            WIDTH=${WIDTH} HEIGHT=${HEIGHT} NRAYS=${NRAYS} \
            SHOWOPT='+D' \
            render-frame; \
        done
	./tile-movie-frames.sh \
          -ncols 5 \
          ${STRIP_PNG} \
          ${FRAME_PNGS}
	@-if [[ -s ${STRIP_PNG} ]]; then \
          if [[ "/${SHOW}" == "/YES" ]]; then ${VIEW_STRIP} ${STRIP_PNG} ; fi ;\
        fi

clean-strip:
	-/bin/rm -f ${OUT_DIR}/${NAME}.log ${OUT_DIR}/${NAME}-*.log
	-/bin/rm -f ${FRAME_PNGS}
	-/bin/rm -f ${STRIP_PNG}

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