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// x3d.cmd
// Makes x3d file for surface.
// Usage: Use the edge and facet "show" commands to control which are done.
// Facets with different front and back colors are included twice.
// Run "x3d" and re-direct output to file, e.g.
// Enter command: x3d >>> "myfile.x3d";
// Programmer: Ken Brakke, brakke@susqu.edu, http://www.susqu.edu/brakke
define vertex attribute order_num integer // for x3d vertex index
x3d := {
local counter,minx, maxx, miny, maxy, minz, maxz, maxsize, eyex, eyey, eyez;
local dirx, diry, dirz, angle, perlinecount;
counter := 0;
if torus then
{ errprintf "Cannot run 'x3d' command in torus mode. Do 'detorus' first.\n";
abort;
};
if symmetry_group then
{ errprintf "Cannot run 'x3d' command in symmetry group mode. Do 'detorus' first.\n";
abort;
};
if space_dimension != 3 then
{ errprintf "The 'x3d' command must be run in three-dimensional space.\n";
abort;
};
if surface_dimension == 1 then
{ errprintf "The 'x3d' command is not meant for the string model.\n";
abort;
};
if simplex_representation then
{ errprintf "The 'x3d' command is not meant for the simplex model.\n";
abort;
};
if lagrange_order >= 2 then
{ errprintf "The 'x3d' command is meant for the linear model, not quadratic or Lagrange.\n";
abort;
};
if rgb_colors then
{ errprintf "The 'x3d' command does not do RGB colors; do rgb_colors off.\n";
abort;
};
foreach vertex jvv do
{
set jvv order_num counter; counter := counter + 1;
};
printf "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
printf "<!DOCTYPE X3D PUBLIC \"ISO//Web3D//DTD X3D 3.1//EN\"\n";
printf " \"http://www.web3d.org/specifications/x3d-3.1.dtd\">\n";
printf "<X3D profile='Immersive' version='3.0'>\n";
printf " <head>\n";
printf " <meta name=\"title\" content=\"cube.x3d\"/>\n";
printf " <meta name=\"description\" content=\"triangulated surface\"/>\n";
printf " <meta name=\"generator\" content=\"Surface Evolver, x3d.cmd\"/>\n";
printf " </head>\n";
printf " <Scene>\n";
printf " <NavigationInfo type=\"EXAMINE\"/>\n";
// Figure out viewpoint, from bounding box, giving same view
// as initial view of Evolver.
minx := min(vertex,x); maxx := max(vertex,x);
miny := min(vertex,x); maxy := max(vertex,y);
minz := min(vertex,x); maxz := max(vertex,z);
maxsize := maximum(maxx-minx,maximum(maxy-miny,maxz-minz));
// eye position
eyex := (maxx+minx)/2 + 2*maxsize;
eyey := (maxy+miny)/2;
eyez := (maxz+minz)/2;
// eye orientation, rotation from default (0,0,-1)
dirx := 1;
diry := 1;
dirz := 1;
angle := 2*pi/3;
printf " <Viewpoint description=\"Initial view\" position='%g %g %g'\n",
eyex,eyey,eyez;
printf " orientation='%g %g %g %g'/>\n",dirx,diry,dirz,angle;
printf " <Transform>\n";
printf " <DirectionalLight ambientIntensity='0.39' direction='-.56 0.34 -0.75'/>\n";
printf " <Background skyColor='.4 .8 1'/>\n";
// Facets
{
printf " <Shape>\n";
printf " <Appearance> <Material diffuseColor='1 1 1'/></Appearance>\n";
printf " <IndexedFaceSet \n";
printf " coordIndex=' \n";
foreach facet jff where show and color >= 0 do
{ printf " %g,%g,%g,-1, %g,%g,%g,-1, \n",
jff.vertex[1].order_num,
jff.vertex[2].order_num,jff.vertex[3].order_num,
jff.vertex[3].order_num,jff.vertex[2].order_num,
jff.vertex[1].order_num;
};
printf " ' \n";
printf " colorIndex='\n ";
perlinecount := 0;
foreach facet jff where show and color >= 0 do
{
printf "%d,%d, ",jff.frontcolor,jff.backcolor;
perlinecount += 1;
if perlinecount >= 10 then
{ printf "\n ";
perlinecount := 0;
};
};
if perlinecount == 0 then
printf " ' \n"
else printf " '\n";
printf " colorPerVertex='false'\n";
printf " solid='true'\n";
printf " >\n";
printf " colorPerVertex='false'\n";
printf " solid='false'\n";
printf " >\n";
printf " <Coordinate DEF='TheVertices' point='\n";
foreach vertex jvv do
{ printf " %g %g %g,\n",jvv.x,jvv.y,jvv.z;
};
printf " ' /> \n";
printf " <Color DEF='EvolverColors' \n";
printf " color=' 0.0 0.0 0.0 , 0.0 0.0 0.5 , 0.0 0.5 0.0 ,\n";
printf " 0.0 0.5 0.5 , 0.5 0.0 0.0 , 0.5 0.0 0.5 ,\n";
printf " 0.5 0.25 0. , 0.3 0.3 0.3 , .15 .15 .15 ,\n";
printf " .25 .25 0.5 , .25 0.5 .25 , .25 0.5 0.5 ,\n";
printf " 0.5 .25 .25 , 0.5 .25 0.5 , .5 .5 .0 , .5 .5 .5'/>\n";
// printf " <Coordinate USE='TheVertices'/>\n";
// printf " <Color USE='EvolverColors' /> \n";
printf " </IndexedFaceSet>\n";
printf " </Shape>\n";
};
// Edges
printf " <Shape>\n";
printf " <Appearance> <Material diffuseColor='0 0 0'/></Appearance>\n";
printf " <IndexedLineSet \n";
printf " coordIndex=' \n";
foreach edge jff where show and color >= 0 do
{ printf " %g,%g,-1, \n",jff.vertex[1].order_num,
jff.vertex[2].order_num;
};
printf " ' \n";
printf " colorIndex='\n ";
perlinecount := 0;
foreach edge jff where show and color >= 0 do
{ printf "%d,",jff.color;
perlinecount += 1;
if perlinecount >= 20 then
{ printf "\n ";
perlinecount := 0;
}
};
if perlinecount == 0 then
printf " '\n"
else
printf " '\n";
printf " colorPerVertex='false'\n";
printf " >\n";
printf " <Coordinate USE='TheVertices'/>\n";
printf " <Color USE='EvolverColors' /> \n";
printf " </IndexedLineSet>\n";
printf " </Shape>\n";
printf " </Transform>\n\n";
printf " </Scene>\n";
printf "</X3D>\n";
} // end x3d
// End x3d.cmd
// Usage: Use the edge and facet "show" commands to control which are done.
// Run "x3d" and re-direct output to file, e.g.
// Enter command: x3d >>> "myfile.x3d";
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