<filter/>
¶Filter is a special kind of solver which “solves” the problem using another solvers.
It calculates its output using input of similar type and changing it in some way, for example translating it from one space to another (2D > 3D, 3D > 2D, etc.).
Filter has one or more inputs and one output (output provider, named out
).
Attributes: 


Filter can transfer data between two geometry objects only if the first is successor of the second in the geometry graph (first is in subtree with rooted with second). In case of geometries, filter can transfer data between two geometries only if main object of the first geometry is successor of the second geometry. By a main object of a geometry we mean:
Filter supposes that each input solver provides data in whole bounding box of geometry which is used by this solver (we mean 2D box in case of 2D geometry). If bounding boxes of two input geometries overlap after transformation to output geometry, then source of filter data is undetermined in points belonged to overlapped fragment.
Some information about connecting filters with solvers are in the connects
sections.