When picking the displayed volume, information regarding the selected voxel are displayed (color, position, tile, resolution). Then we set up the voxelOutline and the voxelizedRendering fields from SoVolumeRenderingQuality to TRUE in order to obtain the Voxelized rendering.
SoVolumeRender, SoVolumeRenderingQuality, SoRayPickAction, SoVolumeRenderDetail, SoMouseButtonEvent, SoLocation2Event, SoEventCallback