imagerotate(3) [php man page]

IMAGEROTATE(3)								 1							    IMAGEROTATE(3)

imagerotate - Rotate an image with a given angle

SYNOPSIS

       resource imagerotate (resource  $image, float  $angle, int  $bgd_color, [int  $ignore_transparent])

DESCRIPTION

	Rotates the $image image using the given $angle in degrees.

	The center of rotation is the center of the image, and the rotated image may have different dimensions than the original image.

PARAMETERS

	      o $
		image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).

	      o $angle
		- Rotation angle, in degrees. The rotation angle is interpreted as the number of degrees to rotate the image anticlockwise.

	      o $bgd_color
		- Specifies the color of the uncovered zone after the rotation

	      o $ignore_transparent
		- If set and non-zero, transparent colors are ignored (otherwise kept).

RETURN VALUES

	Returns an image resource for the rotated image, or FALSE on failure.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.5.0	|						    |
       |	|						    |
       |	|  This  function is now affected by the interpola- |
       |	| tion method set by  the  imagesetinterpolation(3) |
       |	| function.					    |
       |	|						    |
       | 5.1.0	|						    |
       |	|						    |
       |	|	   $ignore_transparent was added.	    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      Rotate an image 180 degrees

	       This example rotates an image 180 degrees - upside down.

	      <?php
	      // File and rotation
	      $filename = 'test.jpg';
	      $degrees = 180;

	      // Content type
	      header('Content-type: image/jpeg');

	      // Load
	      $source = imagecreatefromjpeg($filename);

	      // Rotate
	      $rotate = imagerotate($source, $degrees, 0);

	      // Output
	      imagejpeg($rotate);

	      // Free the memory
	      imagedestroy($source);
	      imagedestroy($rotate);
	      ?>

	      The above example will output something similar to:[NOT DISPLAYABLE MEDIA]Output of example : Rotate an image 180 degrees

NOTES

       Note

	      This function is affected by the interpolation method set by imagesetinterpolation(3).

SEE ALSO

       imagesetinterpolation(3).

PHP Documentation Group 													    IMAGEROTATE(3)

mlib_ImageRotate_Fp(3MLIB)				    mediaLib Library Functions					mlib_ImageRotate_Fp(3MLIB)

NAME

       mlib_ImageRotate_Fp - rotate image

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status  mlib_ImageRotate_Fp(mlib_image  *dst,  const  mlib_image *src, mlib_d64 angle, mlib_d64 xcenter, mlib_d64 ycenter, mlib_filter
       filter, mlib_edge edge);

DESCRIPTION

       The mlib_ImageRotate_Fp() function rotates a floating-point source image around a user-defined rotation center in the user-defined radians.

       The width and height of the destination image can be different from the width and height of the source image.  The (xcenter, ycenter) point
       of  the	source	image  is mapped to the center of the destination image.  You should ensure that the destination buffer is large enough to
       hold the resulting bounding box to avoid clipping part of the image.

       The center of the upper-left corner pixel of an image is located at (0.5, 0.5).

PARAMETERS

       The function takes the following arguments:

       dst	       Pointer to destination image.

       src	       Pointer to source image.

       angle	       Angle of rotation. The angle is measured in radians clockwise.

       xcenter	       X coordinate of rotation center in the source image.

       ycenter	       Y coordinate of rotation center in the source image.

       filter	       Type of resampling filter. It can be one of the following:

		       MLIB_NEAREST
		       MLIB_BILINEAR
		       MLIB_BICUBIC
		       MLIB_BICUBIC2

       edge	       Type of edge condition. It can be one of the following:

		       MLIB_EDGE_DST_NO_WRITE
		       MLIB_EDGE_DST_FILL_ZERO
		       MLIB_EDGE_OP_NEAREST
		       MLIB_EDGE_SRC_EXTEND
		       MLIB_EDGE_SRC_PADDED

RETURN VALUES

       The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_ImageRotate(3MLIB), mlib_ImageRotateIndex(3MLIB), attributes(5)

SunOS 5.10							    10 Nov 2004 					mlib_ImageRotate_Fp(3MLIB)