man Imager::Transform () - a library of register machine image transformations
NAME
Imager::Transform - a library of register machine image transformations
SYNOPSIS
# get a list of transformations my @funcs = Imager::Transform->list; # create a transformation object my $tran = Imager::Transform->new($name); # describe it print $tran->describe; # a list of constant names my @constants = $tran->constants; # information about some of the constants my @info = $tran->constants(@constants);
DESCRIPTION
This module provides a library of transformations that use the Imager transform2() function.
The aim is to provide a place to collect these transformations.
At some point there might be an interface to add new functions, but there's not a whole lot of point to that.
The interface is a little sparse as yet.
METHODS
Returns a list of the transformations. Describes a transformation specified either by name (as a class method) or by reference (as an instance method). The class method returns undef if there is no such transformation. Create a new transformation object. Returns undef if there is no such transformation. Returns a list of input image descriptions, or the number of them, depending on content. The list contains hashrefs, which current contain only one member, desc, a description of the use of the input image. Perform the image transformation. Returns the new image on success, or undef on failure, in which case you can use CW$tran->errstr to get an error message.
- $tran->errstr
- The error message, if any from the last image transformation.
BUGS
Needs more transformations.