# Last edited on 2019-05-27 18:10:36 by stolfilocal

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# Creates a image. Caller must define ${POVNAME}, ${IMAGENAME}, ${WIDTH}, ${HEIGHT}, 
# ${NRAYS}, ${SHOW}.
# The root source file will be ${POVNAME}.pov.
# The output image file will be ${IMAGENAME}.png.
# The ${SHOW} must be "YES" to display the image during and after tracing.
#
POVNAME := POVNAME.IS.UNDEFINED
ifneq "${POVNAME}" "POVNAME.IS.UNDEFINED"
IMAGENAME := IMAGENAME.IS.UNDEFINED
ifneq "${IMAGENAME}" "IMAGENAME.IS.UNDEFINED"
WIDTH := WIDTH.IS.UNDEFINED
ifneq "${WIDTH}" "WIDTH.IS.UNDEFINED"
HEIGHT := HEIGHT.IS.UNDEFINED
ifneq "${HEIGHT}" "HEIGHT.IS.UNDEFINED"
NRAYS := NRAYS.IS.UNDEFINED
ifneq "${NRAYS}" "NRAYS.IS.UNDEFINED"
SHOW := SHOW.IS.UNDEFINED
ifneq "${SHOW}" "SHOW.IS.UNDEFINED"

POVFILE := ${POVNAME}.pov

OTHERINPUTS := ${filter-out ${POVNAME}-%, ${wildcard *.inc pic-*.png }}

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

POVTTF := tt-fonts
POVTOOLS := ../tools

POVSHOW := -D

IMVIEW = display -title "%f"

.PHONY:: \
  image showimage \
  clean

IMAGEFILE := ${IMAGENAME}.png
LOGFILE := ${IMAGENAME}.log
IMAGEBORDER := 0

all: ${IMAGEFILE}

${IMAGEFILE}: ${POVFILE} ${OTHERINPUTS}
	@echo "OTHERINPUTS = ${OTHERINPUTS}"
	-/bin/rm -f ${IMAGEFILE} ${LOGFILE}
	touch ${LOGFILE}
	( ${POVRAY} \
            +FN +Q9 +MB1 \
            +W${WIDTH} +H${HEIGHT} \
            +AM1 +A0.0 +R${NRAYS} \
            ${POVSHOW} \
            +L${POVINC} \
            +L${POVTTF} \
	    +I${POVFILE} \
	    +O${IMAGEFILE} ||  \
          echo "=== aborted ===" \
        ) > ${LOGFILE} 2>&1
	@echo "=== end ===" >> ${LOGFILE}
	${POVTOOLS}/reformat-povray-output.gawk ${LOGFILE} 
	if [[ -s ${IMAGEFILE} ]]; then \
          { if [[ "/${SHOW}" == "/YES" ]]; then ${IMVIEW} ${IMAGEFILE} ; fi } ; \
        else \
          exit 1 ; \
        fi

clean::
	-/bin/rm -f ${IMAGEFILE}

endif # ${SHOW}
endif # ${NRAYS}
endif # ${HEIGHT}
endif # ${WIDTH}
endif # ${IMAGENAME}
endif # ${POVNAME}
# End 
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