Rotate PDF Pages with Rust via C++

This section describes how to change the page orientation from landscape to portrait and vice versa in an existing PDF file using Rust via C++.

Rotating pages ensures proper alignment for printing or displaying PDFs in professional settings

1. Open the PDF Document.
2. Rotate PDF Pages. The rotate function applies a specific rotation (in this case, 180 degrees) to a given page.
3. Save Changes to a New File. The save_as function creates a new PDF file to preserve the original while storing the updated version.

In this example, you rotate a specific page in a PDF document:

    use asposepdf::{Document, Rotation};

    fn main() -> Result<(), Box<dyn std::error::Error>> {
        // Open a PDF-document with filename
        let pdf = Document::open("sample.pdf")?;

        // Rotate PDF-document
        pdf.rotate(Rotation::On270)?;

        // Save the previously opened PDF-document with new filename
        pdf.save_as("sample_rotate.pdf")?;

        Ok(())
    }