public int RequestData(
	int resolution,
	SbBox3i32 subVolume0,
	SbVec2i32 coord,
	SoBufferObject bufferObj
)

Public Function RequestData ( 
	resolution As Integer,
	subVolume0 As SbBox3i32,
	coord As SbVec2i32,
	bufferObj As SoBufferObject
) As Integer

public:
int RequestData(
	int resolution, 
	SbBox3i32 subVolume0, 
	SbVec2i32 coord, 
	SoBufferObject^ bufferObj
)

member RequestData : 
        resolution : int * 
        subVolume0 : SbBox3i32 * 
        coord : SbVec2i32 * 
        bufferObj : SoBufferObject -> int 

Parameters

resolution

Type: SystemInt32

subVolume0

Type: OIV.InventorSbBox3i32

coord

Type: OIV.InventorSbVec2i32

bufferObj

Type: OIV.Inventor.DevicesSoBufferObject

Return Value

The trace is identified by a YZ voxel coordinate. The range of values returned is the intersection of the trace with the specified subvolume (which may be the full dimensions of the volume). The resolution is the power of 2 of the desired subsampling level (0:1/1, 1:1/2, 2:1/4, ...). NOTE: The data is copied.

Returns a request ID. If requestID is positive, this value will be passed to the OIV.LDM.SoLDMDataAccess.EndRequest(System.Int32) method when the requested data is ready, and can then be used with the getRequestedData method to complete the transaction. If requestID is negative, the data is already in memory, so endRequest will not be called, and -requestID (a positive value) should be used with the getRequestedData method.

Call this method with buffer = NULL to get the required size of the application buffer (in the bufferSize member of OIV.LDM.SoLDMDataAccess.DataInfoTrace). Limitations :

• it is not possible to perform an asynchronous data request within GLRender action

  

Reference