# Last edited on 2023-12-31 10:52:43 by stolfi

# Makefile for static image labs
# To be included in a Makefile
# The Makefile must define ${WIDTH} ${HEIGHT} ${ICONWIDTH} ${ICONHEIGHT}

SHELL := /bin/bash

NRAYS = 2

OTHERINPUTS := ${wildcard *.inc pic-*.{png.jpg,JPG}}

# Automatic "make showXXX" after "make XXX":
SHOW := YES

# Show POV-Ray progress:
POVSHOW := YES

ROOTNAME = main
POVFILE := ${ROOTNAME}.pov

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

TOPDIR := ../../..
POVTTF := tt-fonts
POVFILTER := mc937_povray_error_filter.gawk
# POVFILTER := cat 

# Note: defined with "=" rather than ":="
DIRTAIL = ${shell pwd | sed -e 's:^.*/::'}
IMVIEW = display -title "${DIRTAIL}/%f"

.PHONY: \
  all \
  clean \
  image \
  showimage

PNGFILE := ${ROOTNAME}.png

all: image

image: ${PNGFILE}
	@if [[ "/${SHOW}" == "/YES" ]]; then make showimage ; fi

showimage: 
	@if [[ -s ${PNGFILE} ]]; then \
           ${IMVIEW} ${PNGFILE} ; \
        else \
          echo "** file ${PNGFILE} not found" 1>&2 ; exit 1 ; \
        fi

ifeq "/${POVSHOW}" "/YES"
  POVSHOWOP := +D
else
  POVSHOWOP := -D
endif

${PNGFILE}: ${POVFILE} ${OTHERINPUTS}
	-/bin/rm -f ${PNGFILE}
	nice ${POVRAY} \
            +FN +Q9 \
            +W${WIDTH} +H${HEIGHT} \
            ${POVSHOWOP} \
            +AM1 +A0.0 +R${NRAYS} \
            +L${POVINC} \
            +L${POVTTF} \
            +I${POVFILE} \
            +O${PNGFILE} \
          2>&1 \
          | ${POVFILTER}

clean: 
	-/bin/rm -f ${PNGFILE} 
	-/bin/rm -f ${ROOTNAME}-*-i.png ${ROOTNAME}-i.png
	-/bin/rm -f ${ROOTNAME}-*.log ${ROOTNAME}.log