To see the first three tasks of MARS-lab go here.

## Task 4

In this task a spline should be rotated to generate a 3d object. This object was displayed using Geomview.

#### Input

#### rotate Output

## Task 5

The task was to visualize the steepness of a three dimensional spline. Based on different parameters, different measurements are displayed. The following shows two examples of the visualization.

## Task 6

The last task was to implement the marching cubes algorithm for some geometrical objects. The colouring is random to make triangles better visible.