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Flow visualization
VolumeData.TTransferNode Record
TTransferNode = record
  pos: single;
  grad: single;
  color: TColor;
  col: TVector3f;
  alpha: single;
  fixed: boolean;
  selected: boolean;
  end;
Members 
Description 
pos: single; 
position on screen - <-1..1> 
grad: single; 
unused 
color: TColor; 
Color in TColor format 
col: TVector3f; 
Color as 3d vector of <0..1> 
alpha: single; 
unused 
fixed: boolean; 
unused 
selected: boolean; 
unused 

Node of transfer function

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