# Last edited on 2011-05-07 07:57:18 by stolfi

SHELL := /bin/bash

#######################################################################
# Makefile to render a single frame
# 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,...).
#   ${CLOCK}     = Clock value, in the proper format.
#   ${SHOWOPT}   = POV-Ray's '+D' or '-D' flag.

ifneq "/${OUT_DIR}" "/"
ifneq "/${NAME}" "/"
ifneq "/${WIDTH}" "/"
ifneq "/${HEIGHT}" "/"
ifneq "/${NRAYS}" "/"
ifneq "/${CLOCK}" "/"
ifneq "/${SHOWOPT}" "/"

ifneq "@${wildcard ${HOME}/pkg/povray-3.50c-1}" "@"
# For private installation e.g. manaus.ic.unicamp.br
POVRAY := ${HOME}/bin/${PLATFORM}/povray
POVINC := ${HOME}/pkg/povray-3.50c-1/povray-3.50c/include
endif

ifneq "@${wildcard /usr/bin/povray}" "@"
# For HP laptop
POVINC := /usr/share/povray/include
POVRAY := /usr/bin/povray
endif
 
ifneq "@${wildcard /usr/local/bin/povray}" "@"
# For cratera.ic.unicamp.br
POVINC := /usr/local/share/povray-3.6/include
POVRAY := /usr/local/bin/povray
endif
    
POVTTF := tt-fonts

.PHONY:: render-frame clean-frame

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# "make render-frame" creates the frame with given ${CLOCK} value.

FRAME_NAME := ${NAME}-${CLOCK}
FRAME_PNG := ${OUT_DIR}/${FRAME_NAME}.png

INC_IMG_FILES := ${wildcard *.inc texmaps/*.png}

render-frame: ${FRAME_PNG}

${FRAME_PNG}: ${NAME}.pov ${INC_IMG_FILES}
	-/bin/rm -f ${FRAME_PNG}
	${POVRAY} +K${CLOCK} \
            +FN +Q9 +MB1 \
            +W${WIDTH} +H${HEIGHT} \
            +AM1 +A0.0 +R${NRAYS} \
            ${SHOWOPT} +SP32 +EP4 \
            +L${POVINC} \
            +L${POVTTF} \
	    +I${NAME}.pov \
	    +O${FRAME_PNG} \
          2>&1 | ./povray-output-filter.gawk

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