geopackage-sdk/src/main/java/mil/nga/geopackage/tiles/TileGenerator.java
private void adjustGeoPackageBounds(
            BoundingBox requestWebMercatorBoundingBox, int zoom) {
        // Get the fitting tile grid and determine the bounding box that
        // fits it
        TileGrid tileGrid = TileBoundingBoxUtils.getTileGrid(
                requestWebMercatorBoundingBox, zoom);
        tileGridBoundingBox = TileBoundingBoxUtils.getWebMercatorBoundingBox(tileGrid, zoom);
        matrixWidth = tileGrid.getMaxX() + 1 - tileGrid.getMinX();
        matrixHeight = tileGrid.getMaxY() + 1 - tileGrid.getMinY();
    }
private void adjustGeoPackageBounds(
            BoundingBox requestWebMercatorBoundingBox, int zoom) {
        // Get the fitting tile grid and determine the bounding box that
        // fits it
        TileGrid tileGrid = TileBoundingBoxUtils.getTileGrid(
                requestWebMercatorBoundingBox, zoom);
        tileGridBoundingBox = TileBoundingBoxUtils.getWebMercatorBoundingBox(tileGrid, zoom);
        matrixWidth = tileGrid.getMaxX() + 1 - tileGrid.getMinX();
        matrixHeight = tileGrid.getMaxY() + 1 - tileGrid.getMinY();
    }
Adjust the tile matrix set and web mercator bounds for GeoPackage format.
Determine the tile grid width and height

@param requestWebMercatorBoundingBox
@param zoom