## clip

### clip

Returns the clipping window in the x and y (the default current window).
### clip(x1,y1,x2,y2)

Change this window.
## clip line line

### clip line(L1) line(L2)

Returns the 3D line **L1** clipped by the 3D **L2**.
**Notes:**

1) The two lines **L1** and **L2** must be coplanar and same orientation.

2) The line **L1** must have at least one vertex inside the line **L2** .

3) The two lines should have enough points.

**Options:**

**ext(e1) ext(e2)**: allows extend the line **L1** and **L2** if they do not satisfy the third property.

**coe(c1,...) coe(c2,...)**: allows to assign coefficients of curvature at vertices of lines **L1** and **L2** .

**ang(an)**: eliminates points aligned near **an** (an = 0 by default).
## clip line line

### clip line(L1) limit(L2)

Returns the line **L1** clipped by the window **L2**.

Si L2=x1,x2: all values of **L1** will be limited to the interval [x1, x2].

Si L2=x1,y1,x2,y2: all values of **L1** will be limited to the interval [x1,y1]*[y1,x2].

Si L2=x1,y1,z1,x2,y2,z2: all values of **L1** will be limited to the interval [x1,y1,z1]*[y1,x2,z2].
## clip vol

### clip vol(id)

Returns paramater ´clip´ of volume **id**.
### clip vol(id)=c

Change this parameter:

**c = 0**: inhibits the clipping of volume **id**.

sinon: active clipping of volume **id**.

**Note:**

**c = 1**: the bounding box will be clipped exactly (by default).

**c = 2**: the clipping will be a box twice as large.

etc...
## See also: