public void setMatrixIcons(final List<MatrixIcon> MATRIX_ICONS) {
        matrixIcons.setAll(MATRIX_ICONS);
        fireTileEvent(REDRAW_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