geometric normal, normalized values
normal
Returns the normal at the point currently displayed.
normal(nx,ny,nz)
Changes the normal (useful to program a 3D texture).
normal right right
normal right(x1,y1,z1,x2,y2,z2) right(x3,y3,z3,x4,y4,z4)
Returns points (x5,y5,z5) on WM1M2 and (x6,y6,z6) on M3M4 common
perpendiculars to lines M1M2 and M3M4
(see also normal segment segment).
normal fac vol
normal fac(f)vol(id)
Returns the facet f normal of volume id.
mormale fac(f)vol(id)=nx,ny,nz
When the normals to the facets were generated allows change
the facet f normal of volume id.
normal fac(f)anc vol(id)
Returns the facet f of volume id transformed by its matrix.
normal fac(f)generate vol(id)
Returns the normal to facet f of the
extension
or of fractal
of volume id.
normal fac(f)matrix vol(id)
Returns the normal to facet f of volume id transformed by its matrix.
normal line
normal line(x1,y1,z1,x2,y2,z2,x3,y3,z3,...)
Returns the average normale to the 3D polygonal line (x1,y1,z1),
(x2,y2,z2), ...
Note:
Requires at least 3 points, otherwise an error is returned.
normal poi vol
normal(d) poi(x,y,z) vol(id)
Returns the coordinates of projection point (x,y,z) on the volume id from distance d.
Note: d = 0 by default.
normal scalar
normal scalar(v1) scalar(v2)
Returns the scalar product of 2 vectors different dimensions.
normal segment
normal segment(x1,y1,z1,x2,y2,z2) segment(x3,y3,z3,x4,y4,z4)
Returns points (x5,y5,z5) on M1M2 and (x6,y6,z6) on M3M4
common perpendicular to segments M1M2 and M3M4, and NIL if one of these points is not inside
the corresponding segment (see also dist right right).
normal vertex
normal vertex(n1) var("x")
Returns the normals to certex n1of variable x.
Note:
line vertex(n1) var("x"); returns the tangent at vertex n1.
normal vertex(s)vol(id)
Returns the normal at vertex s of volume id.
Options:
anc: normal at vertex s of volume id transformed by its matrix.
generate: normal at vertex s of the
extension
or of fractal of volume id.
normal vertex(s)vol(id)=nx,ny,nz
When normal to vertices are generated, allows change the normal to vertex s
of volume id.
normal vertex(va)vol(a)vertex(vb)vol(b)
Does:
normal vertex(va)vol(a)=normal vertex(vb)vol(b);
normal vertex(s) anc vol(id)
Returns the normal at vertex s of volume id transformed by its matrix.
normal vertex(s) generate vol(id)
Returns the normal at vertex s of the extension of volume id.
See generate ext vol(id).
normal vol
normal vol(id)
Returns the normal property of volume id.
normal vol(id)=n
Changes this property.
1) If n=1 and if
no behind is active, behind facets will not be displayed.
2) If n=-1, normals will be reversed, in this case if
no behind is active, front facets will be displayed.
See also: