// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution.  The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt

function plot3d2(x,y,z,vect,theta,alpha,leg,flag,ebox)
    // plot3d2(x,y,z,vect,T,A,leg,flags,ebox)
    // (x,y,z) description of a set of surfaces
    // to Scilab description + call to plot3d
    // (x,y,z) are three matrices which describe a surface
    // the surface is composed of four sided polygons
    // The x-coordinates of a facet are given by x(i,j),x(i+1,j),x(i,j+1),
    //	x(i+1,j+1)
    // the vect vector is used when multiple surfaces are coded
    // in the same (x,y,z) matrices. vect(j) gives the line
    // at which the coding of the jth surface begins
    // if vect==-1 means that vect is useless
    //---------------------------------------------------------
    [lhs,rhs]=argn(0);
    if rhs<3 then
        error(msprintf(gettext("%s: Wrong number of input argument(s): At least %d expected.\n"), "plot3d2", 3))
    end
    isvect=1
    if exists("vect","local")==0 then isvect=1 ;vect=-1,end
    if vect<>-1 then
        nobjs=prod(size(vect))+1;
        [rx,cx]=size(x);
        vect1=[0,vect,rx];
        xx=[],yy=[],zz=[];
        for i=1:nobjs;
            [xxl,yyl,zzl]=nf3d(x(vect1(i)+1:vect1(i+1),:),...
            y(vect1(i)+1:vect1(i+1),:),...
            z(vect1(i)+1:vect1(i+1),:)),...
            xx=[xx,xxl];yy=[yy,yyl];zz=[zz,zzl];
        end;
    else
        [xx,yy,zz]=nf3d(x,y,z)
    end

    opts=[]
    if exists("theta","local")==1 then
        opts=[opts,"theta=theta"]
    end
    if exists("alpha","local")==1 then
        opts=[opts,"alpha=alpha"]
    end
    if exists("leg"  ,"local")==1 then
        opts=[opts,"leg=leg"]
    end
    if exists("flag" ,"local")==1 then
        opts=[opts,"flag=flag"]
    end
    if exists("ebox" ,"local")==1 then
        opts=[opts,"ebox=ebox"]
    end

    if size(opts,2)+isvect+3 <rhs then
        error(msprintf(gettext("%s: Wrong value for input argument: ''%s'', ''%s'', ''%s'', ''%s'' or ''%s'' expected.\n"),"plot3d2","theta","alpha","leg","flag","ebox"));
    end

    execstr("plot3d(xx,yy,zz,"+strcat(opts,",")+")")
endfunction