pfspanoramic(1) [suse man page]

pfspanoramic(1) 					      General Commands Manual						   pfspanoramic(1)

NAME

       pfspanoramic - Perform projective transformations of spherical images

SYNOPSIS

       pfspanoramic  <source  projection>+<target  projection>	[--width  <val>]  [--height <val>] [--oversample <val>] [--interpolate] [--xrotate
       <angle>] [--yrotate <angle>] [--zrotate <angle>]

DESCRIPTION

       Transform spherical maps between various projections. Currently polar (latitude-longitude), angular (light probe), mirrorball and cylindri-
       cal are supported. The syntax for specifying the transformation is source_projection+target_projection, where source_projection is the cur-
       rent mapping that source image uses and target_projection is the projection you'd like it to be transformed to. If the projection has  some
       optional parameters, you can specify them with syntax: <source projection>/<argument>/...+<target projection>/<argument>/...

       As  of  now  only  angular  supports  a parameter - angle - which defines how many degrees from the viewing direction the projection should
       cover, e.g. angular+angular/angle=180 converts angular image to show only half of a hemisphere around the viewing direction.

OPTIONS

       --width <val>, -w <val>

       --height <val>, -h <val>

	      Make the target image respectively <val> pixels wide and/or high. If only one is specified, the other is computed  from  the  target
	      projection's typical W/H ratio.  If neither is specified, the width is taken from the source image and height is computed as above.

       --oversample <val>, -o <val>

	      Oversample  each	target	pixel <val>x<val> times, improving quality in areas that are scaled down with respect to the source image.
	      Reasonable values are 2 to 5, while setting it higher may make the reprojection unbearably slow.

       --interpolate, -i

	      Use bilinear interpolation when sampling the source image. Increases quality in magnified areas.

       --xrotate <angle>, -x <angle>

	      Rotate the spherical image <angle> degrees around X axis.

       --yrotate <angle>, -y <angle>

	      Rotate the spherical image <angle> degrees around Y axis.

       --zrotate <angle>, -z <angle>

	      Rotate the spherical image <angle> degrees around Z axis.

EXAMPLES

       pfsin grace_probe.hdr | pfspanoramic angular+polar -i -o 3 -y 90 -w 500 | pfsout grace.hdr

	      Transform grace angular map to polar (latitude-longitude) projection applying bilinear interpolation  and  3x3  oversampling,  while
	      rotating	it  by	90  degrees  around Y axis. The image will be resized to 500x250 pixels (as the polar projection has 2:1 width-to-
	      height ratio) and finally saved in grace.hdr.

SEE ALSO

       pfsin(1) pfsout(1)

BUGS

       Please report bugs and comments to Miloslaw Smyk <thorgal@wfmh.org.pl>.

																   pfspanoramic(1)

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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)

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