public virtual bool GetFirstNonTransparentValue(
	out double value,
	out SbVec3i32 pos,
	out SbVec3f objPos,
	bool realValue
)

Public Overridable Function GetFirstNonTransparentValue ( 
	<OutAttribute> ByRef value As Double,
	<OutAttribute> ByRef pos As SbVec3i32,
	<OutAttribute> ByRef objPos As SbVec3f,
	realValue As Boolean
) As Boolean

public:
virtual bool GetFirstNonTransparentValue(
	[OutAttribute] double% value, 
	[OutAttribute] SbVec3i32% pos, 
	[OutAttribute] SbVec3f% objPos, 
	bool realValue
)

abstract GetFirstNonTransparentValue : 
        value : float byref * 
        pos : SbVec3i32 byref * 
        objPos : SbVec3f byref * 
        realValue : bool -> bool 
override GetFirstNonTransparentValue : 
        value : float byref * 
        pos : SbVec3i32 byref * 
        objPos : SbVec3f byref * 
        realValue : bool -> bool 

Parameters

value

Type: SystemDouble

the double value of the first non-transparent voxel along the pick ray.

pos

Type: OIV.InventorSbVec3i32

the position of the picked voxel in data space (IJK voxel coordinates)

objPos

Type: OIV.InventorSbVec3f

the position of the picked voxel in object space (XYZ world coordinates).

realValue

Type: SystemBoolean

if true, the integer value is fetched from the full resolution data. If false, it returns the voxel value from the (possibly subsampled) data currently in GPU memory, thus the voxel value that is displayed in the render area. The displayed voxel is not necessarily in full resolution.

Return Value

false if all voxels along the ray pick are fully transparent, thus all out parameters are meaningless

Depending on the argument realValue, the voxel value is either fetched from the real value in full resolution data or fetched from the displayed data tile on the GPU which is not necessarily in full resolution. Fetching the data in full resolution may require a read from the disk if the full-resolution data is not currently in memory.

Caution
To use GPU picking, you must specify realValue = false.

Reference