help and README

README.md

@@ -26,6 +26,8 @@ pixelfloot was built during the 37c3. in its actual state, its just a mess. I ho
 - for drawing big areas, like 1280x720, use LARGE mode: `LARGE=true ./pixelfloot.sh floot images/xphg.jpg`
   - default field size are 64k lines. You can adjust it with LOLFIELDSIZE:
     `LOLFIELDSIZE=16000 LARGE=true ./pixelfloot.sh floot images/xphg.jpg`
+- drawing an gif file with proper animation: `LARGE=true ./pixelfloot.sh floot images/dancing_banana.gif`
+  - Adjust the speed with FRAMETICKTIME in seconds: `FRAMETICKTIME=0.03 LARGE=true ./pixelfloot.sh floot images/shaking_cat.gif`
 
 ```shell
 $ ./pixelfloot.sh help
@@ -53,6 +55,7 @@ IPFLOOT(string), FLOOTPORT(int), USECACHE(bool), FLOOTFORKS(int)
 SIZE(int), TEXT(string), FONTSIZE(int), BGCOLOR(hex), COLOR(hex)
 BORDERCOLOR(hex), X(int), Y(int), X_MAX(int), Y_MAX(int), H(int), W(int)
 RESIZE(int), ALPHACOLOR(hex), BOUNCESTEP(int), LARGE(bool)
+ANIMATION(bool), FRAMETICKTIME(float)
 ```
 
 Running on my Ryzen 4700G with [wellenbrecher](https://github.com/bits0rcerer/wellenbrecher) 1280x720 and three workers,

pixelfloot.sh

@@ -10,11 +10,16 @@ test -z "$IPFLOOT" && IPFLOOT="130.185.104.31"
 test -z "$FLOOTPORT" && FLOOTPORT="1234"
 
 ########################################################################
-FNAME="$(echo $2 | sed -e 's/\..*$//' -e 's/^images\///')"
 IMGFILE="$2"
+# remove file extension 
+FNAME="${2%.*}"
+# remove everything before the slash, so we get the filename without
+# path and extension
+FNAME="${FNAME##*/}"
 PPMFILE="$FNAME.ppm"
 HEXPPM="images/$FNAME.hexppm"
 PIXLIST="/tmp/$FNAME.pixlist"
+ANIFILE="/tmp/$FNAME"
 SHUFMODE="$3"
 
 FLOOTSRUNNING=0
@@ -37,7 +42,20 @@ test -z "$BOUNCESTEP" && BOUNCESTEP=2
 # /dev/shm/foo to store frame counter
 # 
 # GifFileFormat - gif, jpg, png  || detect which fileformat IMGFILE is
-test -z "$ANIMATION" && ANIMATION="false"
+#test -z "$ANIMATION" && ANIMATION="false"
+# 
+# loadLOL loads every single frame into an array field WHEN ANIMATION is true
+# loadLOL sets No of frames in LOLFIELDS
+#
+# flootworker looks in while loop which value in /dev/shm/frametick is.
+# /dev/shm/frametick contains which frame from LOL to draw.
+# function frametick() gets started in background when ANIMATION is true
+# and gets started before the flootworker get started
+# frametick writes the no of frame to draw into /dev/shm/frametick
+# to not draw too fast, there is a sleep in frametick which waits for
+# FRAMETICKTIME seconds. Values are float, down to lowest value 0.001
+# Only one of ANIMATION or LARGE can be true, not both.
+FRAMETOPICK_SHM="/dev/shm/pxlflt-frametopick"
 ## END ANIMATION
 
 
@@ -48,6 +66,13 @@ declare -a PIXMAP
 declare -a LOL
 declare -a LOLPID
 
+## TODOS
+# 
+# - Put OFFSET into /dev/shm/ so each worker do not have to count OFFSET
+#   for itself and we prevent worker from drifting apart when drawing. 
+# - get dimensions of pic with "identify" (imagemagick part)
+# - get dimensions of the pixelflut board 
+
 
 # colors for colored output 8)
 RED="\e[31m"
@@ -227,6 +252,12 @@ done
 
 
 convertimg() {
+  if [ -z "$1" ] 
+  then
+    CONVERTFILE="$IMGFILE"
+  else
+    CONVERTFILE="$1"
+  fi
   
   if [ -n "$RESIZE" ]
   then
@@ -234,7 +265,7 @@ convertimg() {
     
   fi
   
-  convert $IMGFILE $BORDER $RESIZE txt:  | tail -n +2  | awk '{print $1 $3}' | sed -e 's/\,/ /' -e 's/\:/ /' -e 's/\#//' -e 's/^/PX /'
+  convert $CONVERTFILE $BORDER $RESIZE txt:  | tail -n +2  | awk '{print $1 $3}' | sed -e 's/\,/ /' -e 's/\:/ /' -e 's/\#//' -e 's/^/PX /'
 }
 
 
@@ -287,6 +318,24 @@ xymode() {
 
 }
 
+frametick() {
+  test -z "$FRAMETICKTIME" && FRAMETICKTIME=0.1
+  #LOLFIELDS=12
+  i=0
+  while true
+  do
+    echo "$i"  > $FRAMETOPICK_SHM
+    if [ "$i" -gt $LOLFIELDS ]
+    then
+      i=0
+    else
+      i=$(($i+1))
+    fi
+    sleep $FRAMETICKTIME
+  done
+  
+}
+
 flootworker()
 {  
   while true
@@ -299,6 +348,17 @@ flootworker()
       do
         echo "${LOL[$i]}"     
       done
+    elif [ $ANIMATION ]
+    then
+      xymode
+      echo "$OFFSET"
+      echo "${LOL[$(<${FRAMETOPICK_SHM})]}"
+      #~ i=0
+      #~ while [ $i -le $1 ]
+      #~ do
+        #~ echo "${LOL[$i]}"
+        #~ i=$(($i+1))
+      #~ done
     else
       xymode
       echo "$OFFSET
@@ -329,19 +389,41 @@ loadLOL() {
     L=1    
     LINES="$(echo "$LOL_org" | wc -l )"
     LOLFIELDS="$(( ( $LINES / $LOLFIELDSIZE ) ))"
-    message "LARGE mode: slicing ${YELLOW}${IMGFILE}${ENDCOLOR} - ${YELLOW}${LINES}${ENDCOLOR} into ${YELLOW}${LOLFIELDS}${ENDCOLOR} fields"
+    message "LARGE mode: slicing ${YELLOW}${IMGFILE}${ENDCOLOR} - ${YELLOW}${LINES}${ENDCOLOR} into ${YELLOW}$((${LOLFIELDS}+1))${ENDCOLOR} fields"
     
     i=0
     while [ $i -le $LOLFIELDS ]
     do
       LN=$(($L+$LOLFIELDSIZE+1))
-            message "field ${YELLOW}${i}${ENDCOLOR}, lines ${YELLOW}${L}${ENDCOLOR} - ${YELLOW}${LN}${ENDCOLOR}"
+      message "field ${YELLOW}${i}/${LOLFIELDS}${ENDCOLOR}, lines ${YELLOW}${L}${ENDCOLOR} - ${YELLOW}${LN}${ENDCOLOR}"
       LOL[$i]="$(echo "$LOL_org" | sed -n "${L},$(($LN-1))p;${LN}q" )"
       L=$LN
       
       i=$(($i+1))
     done
   
+  elif [ $ANIMATION ]
+  then
+    
+    i=0
+    while  [ $i -lt $LOLFIELDS ]
+    do
+      if [ -z "$ALPHACOLOR" ]
+      then
+        message "load and shuffle pixels for frame ${YELLOW}$((${i}+1))/${LOLFIELDS}${ENDCOLOR}"
+        LOL[$i]="$(convertimg ${ANIFILE}-${i}.png | shuf)"
+      else
+        message "load and shuffle pixels for frame ${YELLOW}$((${i}+1))/${LOLFIELDS}${ENDCOLOR}, remove aplha color ${YELLOW}${ALPHACOLOR}${ENDCOLOR}"
+        LOL[$i]="$(convertimg ${ANIFILE}-${i}.png | grep -v $ALPHACOLOR | shuf)"
+      fi
+
+      #echo "${LOL[$i]}" | head
+      i=$(($i+1))
+    done
+    # ani
+    #~ echo ani ani
+    #~ exit 1
+    
   else
     for i in $(seq 1 $FLOOTFORKS)
       do
@@ -405,9 +487,20 @@ floot() {
   ;;
   
   *)
-    # generate a tmp file, as i have trouble atm to figure out
-    # why free space get lost when i generate the pixlist directly
-    # in ram
+    if [ $ANIMATION ]
+    then
+      checkfile $IMGFILE
+      message "ANIMATION mode, checking if ${YELLOW}${IMGFILE}${ENDCOLOR} is an GIF"
+      if [ "$(file $IMGFILE |awk '{print $2}')" == "GIF" ]
+      then
+        LOLFIELDS="$(identify $IMGFILE | wc -l )"
+        message "splitting ${YELLOW}${IMGFILE}${ENDCOLOR} up into ${YELLOW}${LOLFIELDS}${ENDCOLOR} frame images"
+        convert -coalesce $IMGFILE ${ANIFILE}.png || error
+      else
+        message error "Other filetypes then ${YELLOW}GIF${ENDCOLOR} are not supported at the moment for ${YELLOW}ANIMATION${ENDCOLOR}"
+        exit 1
+      fi
+    else 
       if [ $USECACHE ]
       then
        checkfile $PIXLIST
@@ -419,8 +512,8 @@ floot() {
        LOL_org="$(convertimg)"
        #convertimg > $PIXLIST
       fi
-      
-      message "prepare worker ${YELLOW}$i${ENDCOLOR} .."
+    fi
+    message "prepare worker .."
     #set -x 
     loadLOL
     #set +x 
@@ -428,8 +521,14 @@ floot() {
   ;;
   esac
 	
-  message "starting $FLOOTFORKS workers"
   
+  if [ $ANIMATION ]
+  then
+    frametick &
+  fi
+  
+  
+  message "starting ${YELLOW}${FLOOTFORKS}${ENDCOLOR} workers"
   
   while true
   do
@@ -439,7 +538,7 @@ floot() {
         if [ -z ${LOLPID[$i]} ] || ! ps -p ${LOLPID[$i]} > /dev/null
         then
           message "worker ${YELLOW}$i${ENDCOLOR} is not running, starting it"
-            if [ $LARGE ]
+            if [ $LARGE ] || [ $ANIMATION ]
             then
               flootworker $LOLFIELDS &
               LOLPID[$i]=$!
@@ -503,11 +602,22 @@ case $1 in
           
           ;;
         esac
-        if ! command -v convert > /dev/null
+        
+        for imgmgckCMD in convert identify
+        do
+          if ! command -v $imgmgckCMD > /dev/null
           then
-          message error "${YELLOW}convert${ENDCOLOR} not found"
+            message error "imagemagick ${YELLOW}${imgmgckCMD}${ENDCOLOR} not found"
             exit 1
           fi
+        done
+        
+        if [ $LARGE ] && [ $ANIMATION ]
+        then
+          message error "${YELLOW}LARGE${ENDCOLOR} and ${YELLOW}ANIMATION${ENDCOLOR} cannot be used at the same time. Please use only one of them."
+          exit 1
+        fi
+        
         message "all requirements satisfied ${GREEN}:)${ENDCOLOR}"
         floot
 	;;
@@ -536,6 +646,7 @@ case $1 in
     echo "SIZE(int), TEXT(string), FONTSIZE(int), BGCOLOR(hex), COLOR(hex)"
     echo "BORDERCOLOR(hex), X(int), Y(int), X_MAX(int), Y_MAX(int), H(int), W(int)"
     echo "RESIZE(int), ALPHACOLOR(hex), BOUNCESTEP(int), LARGE(bool), LOLFIELDSIZE(int)"
+    echo "ANIMATION(bool), FRAMETICKTIME(float)"
     
     exit 1
 		;;