PurplePen.CoursePrinting.BandPageToLimitBitmapSize C# (CSharp) Method

        List<CoursePage> BandPageToLimitBitmapSize(CoursePage page, float dpi, long maxPixels)
        {
            List<CoursePage> list = new List<CoursePage>();
            bool landscape = page.landscape;

            // Figure out how many bands we need to limit the pixel size of each band.
            long pixelsOnPage = (long) Math.Round(page.printRectangle.Width * dpi / 100F) * (long) Math.Round(page.printRectangle.Height * dpi / 100F);
            int numBands = (int) Math.Ceiling((double)pixelsOnPage / (double) maxPixels);

            // Calculate the band size.
            float mapBandSize, printBandSize;
            if (landscape) {
                mapBandSize = page.mapRectangle.Width / numBands;
                printBandSize = page.printRectangle.Width / numBands;
            }
            else {
                mapBandSize = page.mapRectangle.Height / numBands;
                printBandSize = page.printRectangle.Height / numBands;
            }

            // Create the bands.
            for (int i = 0; i < numBands; ++i) {
                CoursePage band = new CoursePage();
                band.landscape = landscape;
                band.courseDesignator = page.courseDesignator;

                if (landscape) {
                    band.mapRectangle = new RectangleF(page.mapRectangle.Left + i * mapBandSize, page.mapRectangle.Top, mapBandSize, page.mapRectangle.Height);
                    band.printRectangle = new RectangleF(page.printRectangle.Left + i * printBandSize, page.printRectangle.Top, printBandSize, page.printRectangle.Height);
                }
                else {
                    band.mapRectangle = new RectangleF(page.mapRectangle.Left, page.mapRectangle.Top + (numBands - 1 - i) * mapBandSize, page.mapRectangle.Width, mapBandSize);
                    band.printRectangle = new RectangleF(page.printRectangle.Left, page.printRectangle.Top + i * printBandSize, page.printRectangle.Width, printBandSize);
                }

                list.Add(band);
            }

            // Return the list of bands.
            return list;
        }