MetaGraph.h

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/*  Copyright (C) 2003-2021 Free Electron Organization
    Any use of this software requires a license.  If a valid license
    was not distributed with this file, visit freeelectron.org. */

/** @file */

#ifndef __operator_MetaGraph_h__
#define __operator_MetaGraph_h__

namespace fe
{
namespace ext
{

/**************************************************************************//**
    @brief Common graph navigation for Houdini, Maya, etc

    @ingroup meta
*//***************************************************************************/
class FE_DL_EXPORT MetaGraph: public OperatorGraphI
{
    protected:

    class MetaNode: public DAGNode
    {
        public:
            void    set(void* a_nativeNode,String a_nodeName)
                    {   m_nativeNode=a_nativeNode;
                        m_nodeName=a_nodeName; }

            void*   m_nativeNode;       //* MObject.ptr for Maya
            String  m_nodeName;
    };

    public:
                    MetaGraph(void)                                         {}
virtual             ~MetaGraph(void)                                        {}

virtual U32         inputCount(String a_nodeName) const;
virtual String      inputConnector(String a_nodeName,U32 a_index) const;
virtual BWORD       hasInputConnector(String a_nodeName,
                            String a_inputConnector) const;
virtual String      inputNode(String a_nodeName,
                            String a_inputConnector) const;
virtual String      inputNodeOutputConnector(String a_nodeName,
                            String a_inputConnector) const;

virtual U32         outputCount(String a_nodeName) const;
virtual String      outputConnector(String a_nodeName,U32 a_index) const;
virtual BWORD       hasOutputConnector(String a_nodeName,
                            String a_outputConnector) const;
virtual String      outputNode(String a_nodeName,
                            String a_outputConnector) const;

        U32         inputCount(const void* a_rNativeNode) const;
        String      inputConnector(const void* a_rNativeNode,
                            U32 a_index) const;
        BWORD       hasInputConnector(const void* a_rNativeNode,
                            String a_inputConnector) const;
        void*       inputNode(const void* a_rNativeNode,
                            String a_inputConnector) const;

        U32         outputCount(const void* a_rNativeNode) const;
        String      outputConnector(const void* a_rNativeNode,
                            U32 a_index) const;
        BWORD       hasOutputConnector(const void* a_rNativeNode,
                            String a_outputConnector) const;
        void*       outputNode(const void* a_rNativeNode,
                            String a_outputConnector) const;

    protected:

        BWORD       addConnection(String a_outputName,String a_outputConnector,
                            String a_inputName,String a_inputConnector);
        BWORD       removeConnection(String a_inputName,
                            String a_inputConnector);
        void        clear(void);
        void        add(void* a_nativeNode,String a_nodeName);
        void        addInput(const void* a_nativeNode,
                            String a_inputConnector);
        void        addOutput(const void* a_nativeNode,
                            String a_outputConnector);
        BWORD       addConnection(void* a_outputNode,String a_outputConnector,
                            void* a_inputNode,String a_inputConnector);
        BWORD       removeConnection(void* a_inputNode,String a_inputConnector);

        void        dump(void) const;
        String      generateDot(void) const;

        sp<ImageI>  render(void);

    private:

        std::map< const void*, sp<MetaNode> >   m_nodeMap;
        std::map<String,const void*>            m_voidMap;
        std::map<const void*,String>            m_nameMap;

        String      m_source;
        sp<ImageI>  m_spRenderer;
};

} /* namespace ext */
} /* namespace fe */

#endif /* __operator_MetaGraph_h__ */