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cpdf_scale
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cpdf_scale

Name

cpdf_scale — Sets coordinate scaling

Synopsis

void cpdf_scale(pdfdoc, x, y); resource pdfdoc: PDF document identifier double x: X axis scale amount double y: Y axis scale amount

Returns

TRUE on success or FALSE on error

Description

Scales the coordinate system rather than the object itself. This affects not only x and y coordinates when placing shapes but the width, height, line width and radius of shapes as well.

In the example below, the coordinate system is scaled up by a factor of two each time. Note how the circle placement, the radius and the line width also change.

If the coordinate system needs to be reset after translating an object, use cpdf_save() and cpdf_restore() .

Version

Since versions 3.0.8 and 4.0

Example

Example 150. Scale coordinate system

// start a PDF document
$cpdf = cpdf_open(0, "test.pdf");

// create a 600x400 page
cpdf_page_init($cpdf, 1, 0, 600, 400, 1);

// draw a circle
cpdf_circle($cpdf, 50, 50, 10);
cpdf_stroke($cpdf); 

// scale coordinate system and draw circle
cpdf_scale($cpdf, 1.5, 1.5);
cpdf_circle($cpdf, 50, 50, 10);
cpdf_stroke($cpdf); 

// resale coordinate system and draw circle
cpdf_scale($cpdf, 1.5, 1.5);
cpdf_circle($cpdf, 100, 100, 10);
cpdf_stroke($cpdf); 

// close and write document
cpdf_finalize($cpdf);
cpdf_close($cpdf);

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.