Drawing & bitmap handling

[aligatrjoe]

Trying to calculate and  incrementally draw lines and save the changed bitmap for later display. Goal is to speedup the display of motion on the screen.  I have a large array of bitmaps, but all elements are the same.  Don't understand how to draw and save the added line increment to a changed bitmap.  Any help would be appreciated.

[InunoTaishou]

What have you tried? Post your code? What array of bitmaps?