<?php
/*
 * 3D Starter:
 * Load a 3D model and create a 3D annotation from it.
 *
 * Define a 3D view and load some 3D data with the view defined. Then create
 * an annotation containing the loaded 3D data with the defined 3D view as the
 * initial view.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 10
 * Required data: PRC data file
 */

// This is where the data files are. Adjust if necessary.
$searchpath = dirname(__FILE__,3)."/input";
$outfile = "";

try {
    $p = new PDFlib();

    $p->set_option("searchpath={" . $searchpath . "}");

    // This means we must check return values of load_font() etc.
    $p->set_option("errorpolicy=return");

    // Start the document
    if ($p->begin_document($outfile, "") == 0) {
        echo("Error: " . $p->get_errmsg());
        exit(1);
    }

    $p->set_info("Creator", "PDFlib Cookbook");
    $p->set_info("Title", "Starter 3D");

    $p->begin_page_ext(0, 0, "width=a4.width height=a4.height");

    // Define a 3D view which shows the model from the top
    $optlist = "type=PRC name=FirstView background={fillcolor=Lavender}" .
               " camera2world={-1 0 0 0 1 0 0 0 -1 0.5 0 300}";
    if (($view = $p->create_3dview("First view", $optlist)) == 0) {
        echo("Error: " . $p->get_errmsg());
        exit(1);
    }

    // Load some 3D data with the view defined above
    $buf = "type=PRC views={$view}";
    if (($data = $p->load_3ddata("riemann.prc", $buf)) == 0) {
        echo("Error: " . $p->get_errmsg());
        exit(1);
    }

    // Create an annotation containing the loaded 3D data with the
    // defined 3D view as the initial view
    //
    $buf = "name=annot usercoordinates contents=PRC 3Ddata=$data 3Dactivate={enable=open} 3Dinitialview=$view";
    $p->create_annotation(116, 200, 447, 580, "3D", $buf);

    $p->end_page_ext("");

    $p->end_document("");

    $buf = $p->get_buffer();
    $len = strlen($buf);

    header("Content-type: application/pdf");
    header("Content-Length: $len");
    header("Content-Disposition: inline; filename=starter_3d.pdf");
    print $buf;

}
catch (PDFlibException $e) {
    echo("PDFlib exception occurred in starter_3d sample:\n" .
        "[" . $e->get_errnum() . "] " . $e->get_apiname() . ": " .
        $e->get_errmsg() . "\n");
    exit(1);
}
catch (Throwable $e) {
    echo($e);
    exit(1);
}

$p = 0;
?>