#include <HPolyPoly.h>
Public Member Functions | |
TK_Status | Clone (BStreamFileToolkit &tk, BBaseOpcodeHandler **handler) const |
TK_Status | Execute (BStreamFileToolkit &tk) alter |
HTK_PolyPolypoint (unsigned char op) | |
TK_Status | Interpret (BStreamFileToolkit &tk, ID_Key key, char const *special) alter |
TK_Status | Interpret (BStreamFileToolkit &tk, ID_Key key, int variant=-1) alter |
void | Reset () alter |
Protected Attributes | |
HC_KEY * | m_keys |
list of entities keys |
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.
HTK_PolyPolypoint::HTK_PolyPolypoint | ( | unsigned char | op | ) | [inline] |
constructor
TK_Status HTK_PolyPolypoint::Clone | ( | BStreamFileToolkit & | tk, | |
BBaseOpcodeHandler ** | handler | |||
) | const [virtual] |
Copies the opcode handler
tk | A reference to the BStreamFileToolkit object. | |
handler | A pointer to the opcode handler object. Passed by reference. |
Reimplemented from TK_PolyPolypoint.
TK_Status HTK_PolyPolypoint::Execute | ( | BStreamFileToolkit & | tk | ) | [virtual] |
Processes the binary data that has been read for the current object, which involves passing the data to application-specific data structures.
tk | A reference to the BStreamFileToolkit object. |
Reimplemented from TK_PolyPolypoint.
TK_Status HTK_PolyPolypoint::Interpret | ( | BStreamFileToolkit & | tk, | |
ID_Key | key, | |||
char const * | special | |||
) | [inline, virtual] |
Extracts graphics data (typically from the application's scene-graph) and maps it to the opcode handler's data members in preparation for writing out an object to the file.
tk | A reference to the BStreamFileToolkit object. | |
key | An identifier to the object (for example, the HOOPS key of a geometry item) | |
special | A string value of particular data |
Reimplemented from BBaseOpcodeHandler.
References BBaseOpcodeHandler::Interpret().
TK_Status HTK_PolyPolypoint::Interpret | ( | BStreamFileToolkit & | tk, | |
ID_Key | key, | |||
int | variant = -1 | |||
) | [virtual] |
Extracts graphics data (typically from the application's scene-graph) and maps it to the opcode handler's data members in preparation for writing out an object to the file.
tk | A reference to the BStreamFileToolkit object. | |
key | An identifier to the object (for example, the HOOPS key of a geometry item) | |
variant | optional specification of an alternate form, such as a Level-of-Detail representation |
Reimplemented from BBaseOpcodeHandler.
void HTK_PolyPolypoint::Reset | ( | ) | [inline, virtual] |
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.
Reimplemented from TK_PolyPolypoint.
References TK_PolyPolypoint::Reset().