array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'de', ), 'this' => array ( 0 => 'function.ps-translate.php', 1 => 'ps_translate', 2 => 'Sets translation', ), 'up' => array ( 0 => 'ref.ps.php', 1 => 'PS Funktionen', ), 'prev' => array ( 0 => 'function.ps-symbol-width.php', 1 => 'ps_symbol_width', ), 'next' => array ( 0 => 'book.rpminfo.php', 1 => 'RpmInfo', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/ps/functions/ps-translate.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

ps_translate

(PECL ps >= 1.1.0)

ps_translate — Sets translation

Beschreibung

ps_translate(resource $psdoc, float $x, float $y): bool

Sets a new initial point of the coordinate system.

Parameter-Liste

psdoc

Resource identifier of the postscript file as returned by ps_new().

x

x-coordinate of the origin of the translated coordinate system.

y

y-coordinate of the origin of the translated coordinate system.

Rückgabewerte

Gibt bei Erfolg true zurück. Bei einem Fehler wird false zurückgegeben.

Beispiele

Beispiel #1 Translation of the coordinate system

<?php
function rectangle($ps) {
ps_moveto($ps, 0, 0);
ps_lineto($ps, 0, 50);
ps_lineto($ps, 50, 50);
ps_lineto($ps, 50, 0);
ps_lineto($ps, 0, 0);
ps_stroke($ps);
}

$ps = ps_new();
if (!ps_open_file($ps, "translate.ps")) {
print "Cannot open PostScript file\n";
exit;
}

ps_set_info($ps, "Creator", "translate.php");
ps_set_info($ps, "Author", "Uwe Steinmann");
ps_set_info($ps, "Title", "Translated example");
ps_set_info($ps, "BoundingBox", "0 0 596 842");

$psfont = ps_findfont($ps, "Helvetica", "", 0);

ps_begin_page($ps, 596, 842);
ps_set_text_pos($ps, 100, 100);
ps_translate($ps, 500, 750);
rectangle($ps);
ps_translate($ps, -500, -750);
ps_setfont($ps, $psfont, 8.0);
ps_show($ps, "Text at initial position");
ps_end_page($ps);

ps_begin_page($ps, 596, 842);
ps_set_text_pos($ps, 100, 100);
ps_save($ps);
ps_translate($ps, 500, 750);
rectangle($ps);
ps_restore($ps);
ps_setfont($ps, $psfont, 8.0);
ps_show($ps, "Text at initial position");
ps_end_page($ps);

ps_delete($ps);
?>

The above example demonstrates two possible ways to place a graphic (in this case just a rectangle) at any position on the page, while the graphic itself uses its own coordinate system. The trick is to change the origin of the current coordinate system before drawing the rectangle. The translation has to be undone after the graphic has been drawn.

On the second page a slightly different and more elegant approach is applied. Instead of undoing the translation with a second call of ps_translate() the graphics context is saved before modifying the coordinate system and restored after drawing the rectangle.

Siehe auch