sub_arctic.lib
Interface traversal_xform

All Known Implementing Classes:

bounds_sem_draw_to_child, xform_rect_to_child, focus_sem_draw_to_child, sem_draw_to_child

public abstract interface traversal_xform

Interface representing an object that transforms a set of "parameter" values from those suitable for use by a parent object into a set suitable for use by a child object (for example, during a traversal using traverse_and_collect()).

See Also:

interactor.traverse_and_collect(int, int, sub_arctic.lib.interactor_pred, sub_arctic.lib.interactor_pred, sub_arctic.lib.traversal_xform, java.lang.Object, sub_arctic.input.pick_collector)

Method Summary

java.lang.Object

xform(java.lang.Object parent_parameters, interactor child_obj, int child_index) Perform the transformation.

Method Detail

xform

public java.lang.Object xform(java.lang.Object parent_parameters,
                              interactor child_obj,
                              int child_index)

Perform the transformation.

Parameters:

parent_parameters - an object representing parameter values as set up for the parent object.

child_obj - the child object that the parameter values should be transformed for use by (a common example would be to transform a point from the parent's coordinate system into this child object's coordinate system).

Returns:

the resulting transformed parameters object. Note: this can be the same object passes in.