/** applies the transformation to the source MelodyPart */
public void execute() {
Trace.log(2, "executing SideSlipCommand");
int start = original.getSize();
if (direction.equals("up")) { // slide up
cm.execute(new ShiftPitchesCommand(distance, dest, 0, start, 0, 128, keySig));
} else if (direction.equals("down")) { // slide down
cm.execute(new ShiftPitchesCommand(-1 * distance, dest, 0, start, 0, 128, keySig));
}
// add two of the same melodies with one transposed
source.setSize(dest.getSize() * 2);
source.pasteOver(dest, start);
}
/** Redoes the side slip. */
public void redo() {
if (source != null && dest != null) {
dest.pasteOver(source, source.getSize());
}
}
