HTK_PolyPolypoint

Detailed Description

class HTK_PolyPolypoint : public TK_PolyPolypoint

Provides HOOPS/3dGS-specific handling of the TKE_Polyline and TKE_Line opcodes.

This class complements the read/write functionality implemented in the base class by overloading the Interpret and Execute methods to provide HOOPS/3dGS-specific opcode handling.

The Interpret phase of this opcode is a little unusual. Since we are dealing with multiple primitives, instead of just one, Interpret operates on all of the geometry in the currently open segment, rather than what is specified as part of its “key” parameter. The “key” that is currently passed into interpret refers to the first line or polyline that was encountered by the segment tree traversal, but we need to get all of the lines and polylines in the segment.

Writing: The HOOPS/3dGS database is queried in the Interpret method, and this data is then written to the HSF file by the Write method Reading: The data is read from the HSF file by the Read method, and is mapped to the HOOPS/3dGS scene-graph within the Execute method.

Export/import of additional user-data (which is associated with this HSF object) would typically be done by overloading the Write and Read methods.

Public Functions

inline HTK_PolyPolypoint(unsigned char op)

constructor

inline ~HTK_PolyPolypoint()
virtual TK_Status Execute(BStreamFileToolkit &tk)

Processes the binary data that has been read for the current object, which involves passing the data to application-specific data structures.

Parameters:tk – A reference to the BStreamFileToolkit object.
Returns:The result of the function call.
TK_Status Interpret(BStreamFileToolkit &tk, ID_Key key, int variant = -1)
inline TK_Status Interpret(BStreamFileToolkit &tk, ID_Key key, char const *special)
virtual TK_Status Clone(BStreamFileToolkit &tk, BBaseOpcodeHandler **handler) const

Copies the opcode handler

Parameters:
  • tk – A reference to the BStreamFileToolkit object.
  • handler – A pointer to the opcode handler object. Passed by reference.
Returns:

The result of the function call.

inline virtual void Reset()

Resets the current opcode handler. This is called by the toolkit when it is done processing an opcode. This method reinitializes any opcode handler variables and frees up temporary data.