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#!/bin/sh
# ==============================================================================
# POV-Ray 3.7
# render_anim.sh - render a scene scene as animation
# ==============================================================================
# written November 2003 by Christoph Hormann
# This file is part of POV-Ray and subject to the POV-Ray licence
# see POVLEGAL.DOC for details
# ------------------------------------------------------------------------------
# calling conventions:
#
# render_anim.sh [output_directory] scene_file
#
# output_directory: directory where to write the rendered images and animation
# scene_file: scene to render
#
# if an ini file with the same basename as the scene_file exists this is
# used for rendering the animation. Otherwise the render options have to be
# given as a '//' comment within the first 50 lines of the file. There must
# be a space after the '//' and the first option has to start with '-' or '+'.
#
# The scene is rendered into a set of png files and then compiled to an mpeg
# using ffmpeg (which has to be available in PATH). The png files are deleted
# afterwards if the animation has been generated successfully.
# ==============================================================================
# --- specify additional render options here ---
POV_OPTIONS=""
FFMPEG=`which ffmpeg`
if [ ! -z "$1" ] ; then
if [ ! -z "$2" ] ; then
OUTPUT_DIR="$1"
RENDER_NAME="$2"
else
OUTPUT_DIR=`dirname $1`
RENDER_NAME="$1"
fi
SCENE_DIR=`dirname $RENDER_NAME`
FILE_BASE=`basename $RENDER_NAME .pov`
if [ -f "$SCENE_DIR/$FILE_BASE.ini" ] ; then
INI_FILE="$SCENE_DIR/$FILE_BASE.ini"
fi
if [ ! -z "$INI_FILE" ] ; then
echo "==========================================================================="
echo "$INI_FILE"
echo "==========================================================================="
povray +L$SCENE_DIR $INI_FILE -o$OUTPUT_DIR/ $POV_OPTIONS -p +fn
#echo "povray +L$SCENE_DIR $INI_FILE -o$OUTPUT_DIR/ $POV_OPTIONS -p +fn"
else
head -n 50 "$RENDER_NAME" | grep -E '^//[ ]+[-+]{1}[^ -]' > /dev/null && POV_FILE="$RENDER_NAME"
if [ ! -z "$POV_FILE" ] ; then
# -- use first option line --
OPTIONS=`head -n 50 "$POV_FILE" | grep -E '^//[ ]+[-+]{1}[^ -]' | head -n 1 | sed "s?^//[ ]*??"`
# -- use last option line --
#OPTIONS=`head -n 50 "$POV_FILE" | grep -E '^//[ ]+[-+]{1}[^ -]' | tail -n 1 | sed "s?^//[ ]*??"`
echo "==========================================================================="
echo "$POV_FILE: $OPTIONS"
echo "==========================================================================="
povray +L$SCENE_DIR -i$POV_FILE -o$OUTPUT_DIR/ $OPTIONS $POV_OPTIONS -p +fn
#echo "povray +L$SCENE_DIR -i$POV_FILE -o$OUTPUT_DIR/ $OPTIONS $POV_OPTIONS -p +fn"
fi
fi
PNG_NAME=`find $OUTPUT_DIR -path "$OUTPUT_DIR/$FILE_BASE*.png" | head -n 1`
PNG_FILE_BASE=`basename $PNG_NAME`
OCNT=`echo "$FILE_BASE.png" | wc -c`
CCNT=`echo "$PNG_FILE_BASE" | wc -c`
NCNT=`expr $CCNT - $OCNT`
#echo "$CCNT - $OCNT = ${NCNT}"
if [ ! -z "$FFMPEG" ] ; then
case $NCNT in
1 | 2 | 3 | 4 )
echo "-------------- compiling animation using ffmpg --------------"
# -- basic mpeg --
ffmpeg -i "$OUTPUT_DIR/$FILE_BASE%${NCNT}d.png" -y "$OUTPUT_DIR/$FILE_BASE.mpg"
# -- divx avi --
#ffmpeg -i "$OUTPUT_DIR/$FILE_BASE%${NCNT}d.png" -y -b 400 -f avi -vcodec msmpeg4 "$OUTPUT_DIR/$FILE_BASE.avi"
echo "-------------- finished compiling animation -----------------"
if [ -f "$OUTPUT_DIR/$FILE_BASE.mpg" ] ; then
rm -f $OUTPUT_DIR/$FILE_BASE*.png
fi
;;
esac
fi
fi
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