import (
    "github.com/gogpu/gg/recording"
    _ "github.com/gogpu/gg-pdf" // Register PDF backend
)

func main() {
    // Create a recorder
    rec := recording.NewRecorder(800, 600)

    // Draw something
    rec.SetFillRGBA(1, 0, 0, 1) // Red
    rec.DrawRectangle(100, 100, 200, 150)
    rec.Fill()

    // Finish recording
    r := rec.FinishRecording()

    // Create PDF backend
    backend, err := recording.NewBackend("pdf")
    if err != nil {
        log.Fatal(err)
    }

    // Playback to PDF
    r.Playback(backend)

    // Save to file
    if fb, ok := backend.(recording.FileBackend); ok {
        fb.SaveToFile("output.pdf")
    }
}

import "github.com/gogpu/gg-pdf"

func main() {
    doc := pdf.NewDocument()
    doc.SetTitle("My Document")
    doc.SetAuthor("Author Name")

    // Page 1
    p1 := doc.NewPage(800, 600)
    // ... draw on p1 ...

    // Page 2
    p2 := doc.NewPage(600, 800)
    // ... draw on p2 ...

    // Save
    doc.SaveToFile("document.pdf")
}