Defining a Trivector

The trivector can be attached to the start or the end point of a spline curve. It creates two new vectors which enclose an angle of 120 degrees.


Figure 1: Possible trivector arrangements (standard=positiv, inverse=negativ).

The direction can be choosen to orient these two vectors so that they point into the same direction (positiv) as the base vector. If you choose the negativ direction, the new vectors point in the opposite direction.
The new vectors receive their length from a second element. This length can be multiplied by a scale factor. If the working surface is a Coons surface the trivector will be projected.

Usage:

Result:

Script process and parameter: def_tri_vector

Defining a Quintvector

A quintvector consists of five vectors which divide a circle into 5 segments with an angular spacing of 72 degrees.

The direction can be choosen to orient these three vectors so that they point into the same direction (positiv) as the base vector. If you choose the negativ direction, the new vectors point in the opposite direction.
If the working surface is a Coons surface the quintvector will be projected.


Figure 2: Possible quintvector arrangements (standard=positiv, inverse=negativ).

Usage:

Result:

Script process and parameter: def_quint_vector

{Build by Martin Hepperle} {Rebuild 845: Saturday, 31, 1997 at 11:46:32, March, by Olaf Brodersen}