IJK is a set of C++ classes, routines and programs for generating
isosurface. It includes programs for generating isosurface lookup
tables for arbitrary convex polyhedra in arbitrary dimensions. It
contains an implementation of the Marching Cubes Algorithm, the 4D
Marching Cubes Algorithm, the Marching Cubes Algorithm using negative,
equals and positive lookup tables, SnapMC which produces quality
isosurface triangles, SHREC for constructing isosurfaces with
sharp features using dual contouring and Religrad for computing
reliable gradients from scalar data. It also contains programs
for reporting
scalar data set information, for
generating regular grid samplings of scalar and gradient fields, for
measuring the angle distance between two surfaces, and for finding
sharp edges in a mesh.






Slices of timevarying isosurface for the Jet Shockwave data set along different axes.
Isovalue = 37, Timesteps = 5665.










Morphing using isosurfaces in 4D.




Interval volume for the sphere function constructed using 4D isosurfaces.



