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// File: VrmlData_Node.hxx
// Created: 25.05.06 14:58:45
// Author: Alexander GRIGORIEV
// Copyright: Open Cascade 2006
#ifndef VrmlData_Node_HeaderFile
#define VrmlData_Node_HeaderFile
#include <Handle_Standard_Type.hxx>
#include <NCollection_List.hxx>
#include <Standard_DefineHandle.hxx>
#include <Standard_TypeDef.hxx>
#include <TCollection_AsciiString.hxx>
#include <VrmlData_ErrorStatus.hxx>
#define VRMLDATA_LCOMPARE(aa, bb) \
((strncmp (aa, bb, sizeof(bb)-1)) ? 0L : (aa += sizeof(bb)-1))
struct VrmlData_InBuffer;
class VrmlData_Scene;
class gp_XY;
class gp_XYZ;
class Handle_VrmlData_Node;
class TCollection_AsciiString;
/**
* Abstract VRML Node
*/
class VrmlData_Node : public Standard_Transient
{
public:
// ---------- PUBLIC METHODS ----------
/**
* Empty constructor
*/
Standard_EXPORT VrmlData_Node ();
/**
* Destructor
*/
virtual ~VrmlData_Node () {}
/**
* Query the Scene that contains this Node
*/
inline const VrmlData_Scene& Scene () const
{ return * myScene; }
/**
* Query the name
*/
inline const char * Name () const { return myName; }
/**
* Read a complete node definition from VRML stream
* @param theBuffer
* Buffer receiving the input data.
* @param theNode
* <tt>[out]</tt> Node restored from the buffer data
* @param Type
* Node type to be checked. If it is NULL(default) no type checking is done.
* Otherwise the created node is matched and an error is returned if
* no match detected.
*/
Standard_EXPORT VrmlData_ErrorStatus
ReadNode (VrmlData_InBuffer& theBuffer,
Handle(VrmlData_Node)&theNode,
const Handle(Standard_Type)& Type
= NULL);
/**
* Read the Node from input stream.
*/
Standard_EXPORT virtual VrmlData_ErrorStatus
Read (VrmlData_InBuffer& theBuffer) = 0;
/**
* Write the Node to output stream.
*/
Standard_EXPORT virtual VrmlData_ErrorStatus
Write (const char * thePrefix) const;
/**
* Returns True if the node is default, then it would not be written.
*/
Standard_EXPORT virtual Standard_Boolean
IsDefault () const;
/**
* Write the closing brace in the end of a node output.
*/
Standard_EXPORT VrmlData_ErrorStatus
WriteClosing () const;
/**
* Create a copy of this node.
* If the parameter is null, a new copied node is created. Otherwise new node
* is not created, but rather the given one is modified.<p>
* This method nullifies the argument node if its member myScene differs
* from that one of the current instance.
*/
Standard_EXPORT virtual Handle(VrmlData_Node)
Clone (const Handle(VrmlData_Node)&)const;
/**
* Read one boolean value (TRUE or FALSE).
*/
Standard_EXPORT static VrmlData_ErrorStatus
ReadBoolean (VrmlData_InBuffer& theBuffer,
Standard_Boolean& theResult);
/**
* Read one quoted string, the quotes are removed.
*/
Standard_EXPORT static VrmlData_ErrorStatus
ReadString (VrmlData_InBuffer& theBuffer,
TCollection_AsciiString& theRes);
/**
* Read one quoted string, the quotes are removed.
*/
Standard_EXPORT static VrmlData_ErrorStatus
ReadMultiString
(VrmlData_InBuffer& theBuffer,
NCollection_List<TCollection_AsciiString>& theRes);
/**
* Read one integer value.
*/
Standard_EXPORT static VrmlData_ErrorStatus
ReadInteger (VrmlData_InBuffer& theBuffer,
long& theResult);
static inline Standard_Boolean OK (const VrmlData_ErrorStatus theStat)
{ return theStat == VrmlData_StatusOK; }
static inline Standard_Boolean OK (VrmlData_ErrorStatus& outStat,
const VrmlData_ErrorStatus theStat)
{ return (outStat = theStat) == VrmlData_StatusOK; }
/**
* Define the common Indent in spaces, for writing all nodes.
*/
static inline Standard_Integer GlobalIndent ()
{ return 2; }
protected:
// ---------- PROTECTED METHODS ----------
/**
* Constructor
*/
Standard_EXPORT VrmlData_Node (const VrmlData_Scene& theScene,
const char * theName);
/**
* Read the closing brace. If successful, theBufrfer is incremented.
* If no brace is found, theBuffer stays in untouched and the method returns
* VrmlFormatError.
*/
Standard_EXPORT static VrmlData_ErrorStatus
readBrace (VrmlData_InBuffer& theBuffer);
private:
// ---------- PRIVATE METHODS ----------
/**
* Method called from VrmlData_Scene when a name should be assigned
* automatically.
*/
Standard_EXPORT void setName (const char * theName,
const char * theSuffix = 0L);
private:
// ---------- PRIVATE FIELDS ----------
const VrmlData_Scene * myScene;
const char * myName; ///< name of the node
#ifdef _DEBUG
Standard_Integer myLineCount;
#endif
friend class VrmlData_Group;
friend class VrmlData_Scene;
public:
// Declaration of CASCADE RTTI
DEFINE_STANDARD_RTTI (VrmlData_Node)
};
// Definition of HANDLE object using Standard_DefineHandle.hxx
DEFINE_STANDARD_HANDLE (VrmlData_Node, Standard_Transient)
Standard_EXPORT Standard_Integer HashCode(const Handle_VrmlData_Node& theNode,
const Standard_Integer theUpper);
Standard_EXPORT Standard_Boolean IsEqual (const Handle(VrmlData_Node)& theOne,
const Handle(VrmlData_Node)& theTwo);
#endif
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