// Converts a PDF from a given file path, splits its slides into images, and puts these images into a designated folder
public static void ConvertPDF(string pdfPath)
{
//Get name of the pdf we are converting
var pdfName = Path.GetFileNameWithoutExtension(pdfPath);
// Create the name of the directory that the images of the PDF will be stored
var pdfImagesDirectory = parentFolderPath + "/" + presentationImagePath + "/" + pdfName;
// If the folder needed to house the images for this specific presentation doesn't yet exists (meaning, we haven't yet crated the PDF), then convert the PDF
if (!AssetDatabase.IsValidFolder(pdfImagesDirectory))
{
//Creates a folder to house image assets
AssetDatabase.CreateFolder(parentFolderPath + "/" + presentationImagePath, pdfName);
// Settings the density to 300 dpi will create an image with a better quality
MagickReadSettings settings = new MagickReadSettings();
settings.Density = new Density(350, 350);
// Create an image collection when splitting up the PDF
using (MagickImageCollection images = new MagickImageCollection())
{
// Reads the PDF, and creates images for eah of the pages
images.Read(pdfPath, settings);
int page = 1;
foreach (MagickImage image in images)
{
// Write page to file that contains the page number
var imagePath = pdfImagesDirectory + "/Slide_" + page.ToString("000") + ".jpg";
image.Write(imagePath);
// Import the newly created image and convert it to type Texture2D
#region KEEPING FOR FUTURE REFERENCE
// keeping this if we need it in the future
AssetDatabase.ImportAsset(imagePath);
TextureImporter importer = AssetImporter.GetAtPath(imagePath) as TextureImporter;
importer.textureType = TextureImporterType.Sprite;
AssetDatabase.WriteImportSettingsIfDirty(imagePath);
// Writing to a specific format works the same as for a single image
//image.Format = MagickFormat.Ptif;
//image.Write("PDF.Page" + page + ".tif");
#endregion
page++;
}
//refreshes the database to finanlize the import of the PDF images
AssetDatabase.Refresh();
}
}
// Sets the presentation manager pull path to the PDF folder derived from the PDF selected
PresentationManager.GetPresentionPath(presentationImagePath + "/" + pdfName);
}
