SpatialNode

Introduction

SpatialNode is conceived as a general-purpose Qt-based library aimed at developing Node Editors for various applications. The library could be used for simple graph visualization and editing or extended further for using the Dataflow paradigm .

The library is written using the Model-View approach. The whole graph structure is defined by a class derived from AbstractGraphModel. It is possible to create or add Nodes and Connections. The underlying data structures could be of any arbitrary type or representation.

An instance of AbstractGraphModel could or could not be attached to specialized QGraphicsScene and QGraphicsView objects. I.e. the so-called "headless" modus operandi is possible.

Data Flow Paradigm

The extended model class DataFlowGraphModel allows to register "processing algorithms" represented by nodes and is equipped with a set of Qt's signals and slots for propagating the data though the nodes.

The node's algorithm is triggered upon arriving of any new input data. The computed result is propagated to the output connections. Each new connection fetches available data and propagates is further. Each change in the source node is immediately propagated through all the connections updating the whole graph.

Acknowledge

This project is forked form nodeeditor originally but rewrite to pure python project, which can integrate with python package well.