public void setMatrixSize(final int COLUMNS, final int ROWS) {
        _matrixSize = new int[] { Helper.clamp(2, 1000, COLUMNS), Helper.clamp(2, 1000, ROWS) };
        fireTileEvent(RECALC_EVENT);
    }
The distance between 2 major tick marks (used in SliderTileSkin)
@return the distance between 2 major tick marks
src/main/java/eu/hansolo/tilesfx/Tile.java