Help with creating an animation from right to left

[rinaldop]

Hello,

I have a strange question that I hope I can explain well. I have created 60 frames of a line image that shrinks from right to left. Here is a representation to try and show what I am doing 

----->
--->
->

I did this by creating each image 7 pixels shorter and then displaying image 60 to 1 in a countdown 

What I want to do now is reverse the animation like this 

<------
<---
<-

The problem is that I am trying to do this in a program that is used to create graphics for PC Sensor Panels (Aida64)

Apparently it displays images left justified so the only way I can think to do this is to push the frames from right to left like this 

<-----
..<---
....<-

and make the ... transparent 

Is there an easier way?

Thanks