// scale the initial size of overviewpanel to shape of alignment
float initialScale = (float) ranges.getAbsoluteAlignmentWidth()
/ (float) ranges.getAbsoluteAlignmentHeight();
// scale the initial size of overviewpanel to shape of alignment
float initialScale = (float) ranges.getAbsoluteAlignmentWidth()
/ (float) ranges.getAbsoluteAlignmentHeight();