s = vrml_surf (x, y, z [, options] ) - code for a VRML surface
s = vrml_surf (z [, options] )
Returns vrml97 code for a Shape -> IndexedFaceSet node representing a
surface passing through the given points.
x : RxC or C : X coordinates of the points on the surface
y : RxC or R : Y " "
z : RxC : Z " "
s : string : The code
If x and y are omitted, they are assumed to be linspace(-1,1,C or R).
Points presenting one or more 'inf' or 'nan' coordinates are ignored.
Options :
"col" , col : 3 : RGB Color, default = [0.3,0.4,0.9]
or 3x(R*C): Color of vertices (vrml colorPerVertex is TRUE).
or 3x((R-1)*(C-1))
: Color of facets
or 1 : Reflectivity (equivalent to [col,col,col] in RGB)
or R x C : Reflectivity of vertices
or 1x(R*C)
or (R-1)x(C-1)
or (R-1)*(C-1)
: Reflectivity of facets.
RGB and reflectivity values should be in the [0,1] interval.
"checker", c : 1x2 : Color as a checker. If c(1) is positive, checker has
c(1) rows. If it is negative, each checker row is c(1) facets
high c(2) likewise determines width of checker columns.
"checker", c : 1x1 : Same as [c,c].
"zcol", zc : 3xN : Specify a colormap. The color of each vertex is
interpolated according to its height (z).
"zgray" : Black-to-white colormap. Same as "zcol", [0 1;0 1;0 1].
"zrb" : Red-to-blue. Same as "zcol", [0 7 10;0 0 2;7 19 2]/10.
"steps" : Represent surface as a piecewise constant Z = f(X,Y) function
"bars" : Represent surface as a bar plot
"tran", tran : 1x1 : Transparency, default = 0
"creaseAngle", a
: 1 : vrml creaseAngle The browser may smoothe the fold
between facets forming an angle less than a.
default = 0
"smooth" : same as "creaseAngle",pi.
"tex", texFile
See also: vmesh(), vrml_faces(), test_moving_surf()
Package: vrml
