9.5.2

624 • CHAPTER 11
FUNCTIONS MENU • 625
This function is similar to Align Normals. Here, however, the normals are reversed. If no polygons are
selected, all the normals of a selected object are reversed. With an active selection only the normals
of the selected surfaces are considered.
Move Down Sequence, Move Up Sequence
These functions are mostly used with splines; hence, you’ll also nd these functions on the Structure
> Edit Spline submenu.
When the functions are applied to polygon objects, the effect is indirect: the order of the points is
changed for the selected polygons. This in turn changes the polygon coordinate system. Tools that use
the polygon coordinate system such as Matrix Extrude will then have a different effect when applied
to the polygons — see the example below.
Example
The Move Up Sequence function applied to two selected polygons (left) and the result of
applying Matrix Extrude to all of the polygons (right).
To learn about the polygon coordinate system, look up ‘Polygon object’ in the index.
Collapse
With the Collapse function, the selected points, edges or polygons are scaled down to a size of zero
towards their center point. These points are then welded together. The function works in all three
modes (point, edge and polygon).