added new UI for python version

Now python users can also enjoy the easy UI

Python Version/DatamoshLib/FFG_effects/jscripts/Shift.js

@@ -0,0 +1,74 @@
+// dd_RandomDamage(antiGrav).js
+// anitgravityify if threshold met for frame
+
+let threshold = 98;
+// global variable holding forward motion vectors from previous frames
+var old_mvs = [ ];
+// a variable for gravity
+var rt = 0;
+var gravity = 0
+var orig_gravity = 5;
+var TRIGGERED = 0;
+var frameCount = 10;
+var count = 0;
+
+function glitch_frame(frame)
+{
+	var do_or_not = Math.random() * 100;
+	// only do the glitch if our random number crosses the threshold
+	if(do_or_not > threshold | TRIGGERED == 1){
+		if(TRIGGERED == 0){
+			gravity = orig_gravity;
+			TRIGGERED = 1;
+			rt = 0;
+		}
+		// bail out if we have no motion vectors
+		let mvs = frame["mv"];
+		if ( !mvs )
+			return;
+		// bail out if we have no forward motion vectors
+		let fwd_mvs = mvs["forward"];
+		if ( !fwd_mvs )
+			return;
+
+		// buffer first set of vectors. . .
+		if(rt == 0){
+			let json_str = JSON.stringify(fwd_mvs);
+			let deep_copy = JSON.parse(json_str);
+			// push to the end of array
+			old_mvs[0] = (deep_copy);
+			rt = 1;
+		}
+
+		// clear horizontal element of all motion vectors
+		for ( let i = 0; i < fwd_mvs.length; i++ )
+		{
+			// loop through all rows
+			let row = fwd_mvs[i];
+			let old_row = old_mvs[0][i];
+			for ( let j = 0; j < row.length; j++ )
+			{
+				// loop through all macroblocks
+				let mv = row[j];
+				let omv = old_row[j];
+				// THIS IS WHERE THE MAGIC HAPPENS
+
+				mv[0] = mv[0];
+				//if(mv[1] < 0){
+					var nmv = mv[1];
+					mv[1] = omv[1];
+					omv[1] = nmv + omv[1] + gravity;
+					//gravity++;
+				//}else{
+				//	mv[1] = mv[1];
+				//}
+
+			}
+		}
+		count++;
+		if(count >= frameCount){
+			TRIGGERED = 0;
+			count = 0;
+		}
+	}
+}