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3.5.2 CLIM Transformation Protocol

transformation [Protocol Class]	

Summary: The protocol class of all transformations. There are one or more subclasses of transformation that implement transformations, the exact names of which are explicitly unspecified. If you want to create a new class that behaves like a transformation, it should be a subclass of transformation . Subclasses of transformation obey the transformation protocol.

All of the instantiable transformation classes provided by CLIM are immutable.

transformationp [Function]	

Arguments: object

Summary: Returns t if object is a transformation; otherwise, it returns nil .


Summary: An instance of a transformation that is guaranteed to be an identity transformation, that is, the transformation that "does nothing."


Summary: The class that is the superclass of the following three conditions. This class is a subclass of error .


Summary: The error that is signaled when make-3-point-transformation is given three collinear image points.


Summary: The error that is signaled when make-reflection-transformation is given two coincident points.


Summary: The error that is signaled when invert-transformation is called on a singular transformation, that is, a transformation that has no inverse.

Common Lisp Interface Manager 2.0 User Guide - 14 Dec 2001

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