## CURVES EXTENSIONS |

EXTENSION OF EXPRESSION

EXTENSION OF A SURFACE

EXTENSION OF A TRAJECTORY

A first extension parameter gives the number of points added to each segment of the polygonal line.

A second parameter controls the curvature.

A third parameter allows you to regulary distribute the points on the curve.

If

See also

adjust.

`ext(e,c,f,x1,y1,z1,x2,y2,z2,...,xn,yn,zn)`

Returns a 3D polygonal line approximating a curve passing through the vertices Extension on a facet

Syntax:

`ext vol n=e,c,f;`

If

By default, the curvature coefficient is the same on the entire volume. Command coe vertex (s) vol(id)=c assigns coefficient

To create a fold on a surface (upper edge of a lip for example) it is sufficient to assign a zero coefficient to all the vertices of the line.

`ext fac(num) vol(id)=e,c,f;`

Assigns to facet

1) Two adjacent faces provided with extensions of different coefficients will present a geometric discontinuity at their junction.

2) The extension is calculated dynamically display the volume, however, the command generate ext can actually generate all the vertices and facets of the extension curve..

3) A volume with expansion and another property (like motif) will be applied to the extension.

`traj anc number 1;`

/* Builds a trajectory */
```
poi 0;poi 200,-200;poi 200,0;
```

end;

ext traj 1=20,1;

/* geometric smoothing */