--- /dev/null
+## Copyright (C) 2002 Etienne Grossmann <etienne@egdn.net>
+##
+## This program is free software; you can redistribute it and/or modify it under
+## the terms of the GNU General Public License as published by the Free Software
+## Foundation; either version 3 of the License, or (at your option) any later
+## version.
+##
+## This program is distributed in the hope that it will be useful, but WITHOUT
+## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+## details.
+##
+## You should have received a copy of the GNU General Public License along with
+## this program; if not, see <http://www.gnu.org/licenses/>.
+
+## s = vrml_points(x,options)
+##
+## x : 3xP : 3D points
+##
+## Makes a vrml2 "point [ ... ]" node from a 3xP matrix x.
+##
+## OPTIONS (name and size/type, if applicable):
+## ---------------------------------------
+## "balls" : Displays spheres rather than points. Overrides the
+## "hide" options and no Coordinate node is defined;makes
+## "name" ineffective.
+##
+## "boxes" or
+## "cubes" : Displays cubes rather than points. Overrides the "hide"
+## options and no Coordinate node is defined;makes "name"
+## ineffective.
+##
+## "rad", 1 or P: Radius of balls/size of cubes. default = 0.1
+##
+## "nums" : Displays numbers rather than points. Overrides the
+## "hide" options and no Coordinate node is defined;
+## makes "name" ineffective.
+##
+## WARNING : This option seems to make freewrl 0.34 hang, so that it
+## is necessary to kill it (do vrml_browse ("-kill")). Other
+## browsers can can view the code produced by this option.
+##
+## "col", 3x1 : Points will have RGB col. default = [0.3,0.4,0.9]
+## or 3xP : The color of each point.
+## "tran", 1x1 : Transparency default = 0
+## "emit", e : Use or not emissiveColor default = 1
+##
+## "name", str : The Coordinate node will be called name
+## (default="allpoints").
+## "hide" : The points will be defined, but not showed.
+
+function s = vrml_points(x,varargin)
+## varargin
+hide = 0;
+cubes = balls = nums = 0;
+rad = 0.1 ;
+name = "allpoints" ;
+col = [0.3 0.4 0.9];
+emit = 1;
+tran = 0;
+
+i = 1; # pos 2.1.39
+
+while i <= nargin-1
+
+ tmp = varargin{i++};
+ if strcmp(tmp,"hide") ,
+ hide = 1;
+ elseif strcmp(tmp,"balls") ,
+ balls = 1;
+ elseif strcmp(tmp,"cubes") || strcmp(tmp,"boxes") ,
+ cubes = 1;
+ elseif strcmp(tmp,"rad") ,
+
+ rad = varargin{i++};
+ elseif strcmp(tmp,"nums") ,
+ nums = 1;
+ elseif strcmp(tmp,"emit") ,
+
+ emit = varargin{i++};
+ elseif strcmp(tmp,"col") ,
+
+ col = varargin{i++};
+ elseif strcmp(tmp,"name") ,
+
+ name = varargin{i++};
+ elseif strcmp(tmp,"tran") ,
+ tran = varargin{i++};
+ end
+end
+
+if rows (x) != 3,
+ if columns (x) == 3,
+ x = x' ;
+ else
+ error ("vrml_points : input is neither 3xP or Px3\n");
+ ## keyboard
+ end
+end
+P = columns (x) ;
+ # Produce a PointSet
+if !balls && !cubes && !nums,
+
+ if prod (size (col)) == 3*P # One color per point
+ smat = "";
+ scol = sprintf (" color Color { color [\n %s]\n }\n",\
+ sprintf (" %8.3f %8.3f %8.3f\n", col));
+ else # One color
+ smat = [" appearance Appearance {\n",\
+ vrml_material(col, emit),"\n",\
+ " }\n"];
+ scol = "";
+ end
+
+ s = sprintf(["Shape {\n",\
+ smat,\
+ " geometry PointSet {\n",\
+ scol,\
+ " coord DEF %s Coordinate {\n point [\n " ],name); # ]
+
+
+ s0 = sprintf("%10.6g %10.6g %10.6g ,\n ",x);
+
+ s = sprintf("%s%s]\n }\n }\n }\n",s,s0); # [
+
+ if hide, s = ["Switch {\nchoice\n[\n",s,"\n]\n}"]; end
+
+ # Use numbers
+elseif nums,
+ printf ("Foo\n");
+ s = "";
+ if prod (size (col)) == 3, col = col(:) * ones (1,P); end
+ for i = 1:P,
+ s0 = sprintf([\
+ "Transform {\n",\
+ " translation %10.6g %10.6g %10.6g\n",\
+ " children [\n",\ # ]
+ " Billboard {\n",\
+ " children [\n",\ # ]
+ " Shape {\n",\
+ " appearance Appearance {\n",\
+ vrml_material(col(:,i), emit, tran),"\n",\
+ " }\n",\
+ " geometry Text {\n",\
+ " string \"%s\"\n",\
+ " fontStyle FontStyle { size 0.25 }\n",\
+ " }\n",\
+ " }\n",\
+ " ]\n",\
+ " }\n",\
+ " ]\n",\
+ "}\n"],\ # [
+ x(:,i),sprintf("%d",i-1));
+ ## x(:,i),col,col,sprintf("%d",i-1));
+ ## " emissiveColor %8.3f %8.3f %8.3f\n",\
+ ## " axisOfRotation 0.0 0.0 0.0\n",\
+
+ s = sprintf("%s%s",s,s0);
+ end
+else
+ # If all radiuses are the same, do a single
+ # geometry node for all points
+ if all (size (rad) == 1) || ! any (abs (diff (rad))>eps)
+ all_same_rad = 1;
+ if balls, shapestr = sprintf("Sphere { radius %8.3f}",rad) ;
+ else shapestr = sprintf("Box { size %8.3f %8.3f %8.3f}",rad,rad,rad) ;
+ end
+ else
+ all_same_rad = 0;
+ end
+
+ # If all colors are the same, do a single
+ # geometry node for all points
+ if prod (size (col)) == 3 || ! any (abs (diff (col'))>eps)
+ all_same_col = 1;
+ colorstr = vrml_material (col(1:3), emit);
+ else
+ all_same_col = 0;
+ end
+
+ s = "";
+ for i = 1:P
+ # If some radiuses differ, I must do
+ # geometry nodes individually
+ if ! all_same_rad
+ # Skip zero-sized objects
+ if ! rad(:,i), continue; end
+
+ if balls
+ shapestr = sprintf("Sphere { radius %8.3f}",rad(:,i));
+ else
+ shapestr = sprintf("Box { size %8.3f %8.3f %8.3f}",rad(:,[i,i,i]));
+ end
+ end
+ # If some colors differ, I must do material
+ # nodes individually
+ if ! all_same_col, colorstr = vrml_material (col(:,i), emit); end
+
+ s0 = sprintf([\
+ "Transform {\n",\
+ " translation %10.6g %10.6g %10.6g\n",\
+ " children [\n",\ # ]
+ " Shape {\n",\
+ " appearance Appearance {\n",\
+ colorstr,"\n",\
+ " }\n",\
+ " geometry ",shapestr,"\n",\
+ " }\n",\
+ " ]\n",\
+ "}\n"],\
+ x(:,i));
+ ## " emissiveColor %8.3f %8.3f %8.3f\n",\
+ ## x(:,i),col,col,shape);
+ s = sprintf("%s%s",s,s0);
+ end
+end
+endfunction
+
+
git://git.creatis.insa-lyon.fr / CreaPhase.git / blobdiff