public void visualizeInterval(Drawing drawing, Interval interval, int length, int windowSize) {
int[] styleArray = new int[sequence.size()];
Arrays.fill(styleArray, -1);
markInterval(interval, null, styleArray, length, windowSize);
NodeStyle style = null;
for (int i = 0; i < styleArray.length; i++) {
if (styleArray[i] != -1) {
style = TikzConstants.CELL_STYLES[styleArray[i]];
} else {
style = TikzConstants.LIGHT_BLUE_CELL;