Shear Warp Implementation

References

[1]	"Fast Volume Rendering Using a Shear-Warp Factorization of the Viewing Transformation" July, 1994 Philippe Lacroute and Marc Levoy This paper in the web.
[2]	"Fast Volume Rendering Using a Shear-Warp Factorization of the Viewing Transformation" 1995 Philippe Lacroute The dissertation in the web.
[3]	"The Perspective Shear-Warp Algorithm in A Virtual Environment" October, 2001 Jürgen P. Schulze, Roland Niemeier, Ulrich Lang This paper in the web.
[4]	"Shear-Warp Deluxe: The Shear-Warp Algorithm Revisited" 2002 Jon Sweeney and Klaus Mueller This paper in the web.