__________ SaGA Gallery __________

Welcome to the SaGA Gallery - a collection of pictures created with functions in the SaGA toolbox.

Here are some nice 3-d surfaces which can be made with various graphics functions in the SaGA.

Knots collection - a series of "Knots" - periodic surfaces created with KNOTS and TUBES functions

Mebius strip - the "Mebius strip" of the first order, created with MEBIUS (and TUBES) function

Boolean operations with polygons - various 2-D polygons computations: intersection, union, difference, exclusive OR.

- topographic map filled with CONTOURF command

These are a few pictures illustrating Delaunay triangulation/tesselation programs.

2-d Delaunay triangulation This is a triangulation of a planar 200-points random normal set obtained and plotted with TRIANGUL function.

Voronoi diagram This is a planar Voronoi diagram - partition of a plane (tesselation) into regions closest to a gibven point of a set. This diagram illustrates the duality of Voronoi tesselation and Delaunay triangulation procedures.

3-d Delaunay Delaunay tetrahedral tesselation of a 3-d set of points. Created with DELAUNAY function. only a few tetrahedral facets are "filled".

Triangulated "membrane" surface - MATLAB logo in a triangular form. Obtained with SURFTRI function by triangulation of 500 random points with TRIANGUL routine.

Here is another very important concept in computational geometry: convex hull of a set of points

3-d Convex hull - convex hull of a a set of 100 uniformly distributed points on a sphere. The set is produced with EQDSPH function, the conveh hull - with CONVEXH function.

3-d Convex hull Convex hull of a a set of 100 randomly distributed points on a sphere. The set is produced with RANDSPH function, the convex hull - with CONVEXH function.

Points inside/out of a 3-d polyhedron Function INPOLYHD determines whether points are inside, outside or on the boundary of a 3-dimensional polyhedra

Continue to part 2 ...

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