A streamline is a line that is everywhere tangent to the vector field. Scalar values also are calculated along the streamline and can be used to color the line. Streamlines are calculated by integrating from a starting point through the vector field. It also is possible to compute vorticity along the streamline.
Smaller values result in more line primitives but smoother streamlines.
Thus, the line segments will be smaller in areas of low velocity and larger in regions of high velocity. This is different than the IntegrationStepLength defined by the superclass vtkStreamer . This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkStreamer . Reimplemented in vtkDashedStreamLine .