diff --git a/.gitignore b/.gitignore
index 19e49bf..59c0ca4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,17 @@
 *.code-workspace
 *.ist
 
+# additional folders not required
+BundleTrack-master/
+TEASER-plusplus-master/
+20objects/
+quellen/
+
+# ffmpeg
+frame*.png
+palette.png
+*.gif
+
 ## Core latex/pdflatex auxiliary files:
 *.aux
 *.lof
diff --git a/assets/5grad5cm.png b/assets/5grad5cm.png
deleted file mode 100644
index 405b729..0000000
Binary files a/assets/5grad5cm.png and /dev/null differ
diff --git a/assets/5grad5cm.scad b/assets/5grad5cm.scad
deleted file mode 100644
index 5e4e9af..0000000
--- a/assets/5grad5cm.scad
+++ /dev/null
@@ -1,5 +0,0 @@
-color([1,0,0]) rotate([0,0,0]) translate([0,0,0]) cube(10,true);
-color([0,0,1,0.5]) rotate([5,5,5]) translate([5,5,5]) cube(10,true);
-
-translate([20,-5,-8]) rotate([90,0,90]) text("<-------->", 2);
-translate([20,-3.5,-10]) rotate([90,0,90]) text("10 cm", 2);
\ No newline at end of file
diff --git a/assets/5grad5cm/5grad5cm.png b/assets/5grad5cm/5grad5cm.png
new file mode 100644
index 0000000..62f7ac0
Binary files /dev/null and b/assets/5grad5cm/5grad5cm.png differ
diff --git a/assets/5grad5cm/5grad5cm.scad b/assets/5grad5cm/5grad5cm.scad
new file mode 100644
index 0000000..c962402
--- /dev/null
+++ b/assets/5grad5cm/5grad5cm.scad
@@ -0,0 +1,25 @@
+// Set viewport
+$vpt=[0,0,0];
+$vpr = [58, 0, 138];
+$vpd = 70;
+
+// working with 25 FPS and 100 steps
+move = $t*5;
+echo(move);
+
+// side-length of cube
+length = 10;
+
+// move to origin
+translate([length/2, length/2, length/2]){
+    // blue origin position
+    color([0,0,1]) rotate([0,0,0]) translate([0,0,0]) cube(length,true);
+    // red translated and rotated position
+    color([1,0,0,0.9]) rotate([move,move,move]) translate([-move,move,move]) cube(length,true);
+    // arrow
+    translate([5,-5,-8]) rotate([90,0,90]) text("<-------->", 2);
+    // text annotation
+    translate([5,-3.5,-10]) rotate([90,0,90]) text("10 cm", 2);
+}
+
+// to export check "Dump Images" on the animation view
\ No newline at end of file
diff --git a/assets/5grad5cm/creategif.sh b/assets/5grad5cm/creategif.sh
new file mode 100755
index 0000000..2c2548c
--- /dev/null
+++ b/assets/5grad5cm/creategif.sh
@@ -0,0 +1,2 @@
+ffmpeg -i frame%5d.png -vf palettegen palette.png
+ffmpeg -v warning -framerate 25 -i frame000%2d.png -i palette.png -lavfi "paletteuse,setpts=6*PTS" -y sample.gif