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input_output.cc
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input_output.cc
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/* input_output.cc */
void mesh::read_mesh(ifstream &input_file){
/* format of <filename.wire> is as follows:
number of vertices
valence of vertex 0 list of vertices adjacent to vertex 0 location of vertex 0
valence of vertex 1 list of vertices adjacent to vertex 1 location of vertex 1
and so on. */
ivec I;
point p;
int i,j,k,vertices,valence;
ADJ.resize(0); // initialize vertex list data
LOC.resize(0); // initialize vertex location data
input_file >> vertices;
for(i=0;i<vertices;i++){
I.resize(0);
input_file >> valence;
for(j=0;j<valence;j++){
input_file >> k;
I.push_back(k);
};
ADJ.push_back(I);
input_file >> p[0];
input_file >> p[1];
input_file >> p[2];
LOC.push_back(p);
};
incolor=newpoint(1.0,1.0,0.8);
outcolor=newpoint(0.8,0.8,1.0); // default colors in case not specified
for(i=0;i<3;i++){
input_file >> incolor[i];
};
for(i=0;i<3;i++){
input_file >> outcolor[i];
};
WIRE=true; // nicer default
verbose=true; // nicer default
isobar=false; // nicer default
iheight=0.01; // nice default
if(verbose){
cout << "Read mesh from file. " << vertices << " vertices.\n";
};
};
void mesh::eps_draw(){ // write mesh to .eps file
string S;
ofstream output_file;
int i,j,k,l;
double t;
point N;
cout << "Enter name of file to write to: ";
getline(cin, S, '\n');
cout << "Writing to file " << S << "\n";
output_file.open(S.c_str());
output_file << "%!PS-Adobe-2.0 EPSF-2.0 \n";
output_file << "%%BoundingBox: 0 0 500 500 \n";
output_file << "gsave \n";
output_file << "100 100 scale \n";
output_file << "1 100 div setlinewidth \n";
output_file << "2.5 2.5 translate \n";
if(isobar==false){ // standard shaded mode
output_file << "/t {9 dict begin \n";
output_file << " /c3 exch def \n";
output_file << " /c2 exch def \n";
output_file << " /c1 exch def \n";
output_file << " /y3 exch def \n";
output_file << " /x3 exch def \n";
output_file << " /y2 exch def \n";
output_file << " /x2 exch def \n";
output_file << " /y1 exch def \n";
output_file << " /x1 exch def \n";
output_file << " gsave \n";
output_file << " c1 c2 c3 setrgbcolor \n";
output_file << " newpath \n";
output_file << " x1 y1 moveto \n";
output_file << " x2 y2 lineto \n";
output_file << " x3 y3 lineto \n";
output_file << " closepath \n";
output_file << " fill \n";
output_file << " stroke \n";
output_file << " grestore \n";
output_file << "end} def \n";
sort_faces();
for(i=0;i<(int) FAC.size();i++){
j=FAC[i][0];
k=FAC[i][1];
l=FAC[i][2];
output_file << LOC[j][0] << " " << -LOC[j][1] << " ";
output_file << LOC[k][0] << " " << -LOC[k][1] << " ";
output_file << LOC[l][0] << " " << -LOC[l][1] << " ";
N = (LOC[k]-LOC[j])*(LOC[l]-LOC[k]);
N=N/norm(N);
t=N[2];
if(t>=0.0){
output_file << 0.2+(0.6*t*outcolor[0]) << " " << 0.2+(0.6*t*outcolor[1]) << " " << 0.2+(0.6*t*outcolor[2]) << " t\n";
} else {
output_file << 0.2-(0.6*t*incolor[0]) << " " << 0.2-(0.6*t*incolor[1]) << " " << 0.2-(0.6*t*incolor[2]) << " t\n";
};
};
} else { // isobar mode
output_file << "/t {6 dict begin \n";
output_file << " /y3 exch def \n";
output_file << " /x3 exch def \n";
output_file << " /y2 exch def \n";
output_file << " /x2 exch def \n";
output_file << " /y1 exch def \n";
output_file << " /x1 exch def \n";
output_file << " gsave \n";
output_file << " 1 setgray \n";
output_file << " newpath \n";
output_file << " x1 y1 moveto \n";
output_file << " x2 y2 lineto \n";
output_file << " x3 y3 lineto \n";
output_file << " closepath \n";
output_file << " fill \n";
output_file << " stroke \n";
output_file << " grestore \n";
output_file << "end} def \n";
output_file << "/l {4 dict begin \n";
output_file << " /y2 exch def \n";
output_file << " /x2 exch def \n";
output_file << " /y1 exch def \n";
output_file << " /x1 exch def \n";
output_file << " newpath \n";
output_file << " x1 y1 moveto \n";
output_file << " x2 y2 lineto \n";
output_file << " stroke \n";
output_file << "end} def \n";
sort_faces();
for(i=0;i<(int) FAC.size();i++){
j=FAC[i][0];
k=FAC[i][1];
l=FAC[i][2];
output_file << LOC[j][0] << " " << -LOC[j][1] << " ";
output_file << LOC[k][0] << " " << -LOC[k][1] << " ";
output_file << LOC[l][0] << " " << -LOC[l][1] << " t\n";
draw_stripy_eps_triangle(LOC[j],LOC[k],LOC[l],iheight,output_file);
};
};
output_file << "grestore \n";
output_file << "%eof \n";
output_file.close();
cout << "wrote to file.\n";
};
void mesh::write_mesh_to_file(){ // write mesh to file
string S;
ofstream output_file;
int i,j;
cout << "Enter name of file to write to: ";
getline(cin, S, '\n');
cout << "Writing to file " << S << "\n";
output_file.open(S.c_str());
output_file << (int) ADJ.size() << "\n"; // number of vertices
for(i=0;i<(int) ADJ.size();i++){
output_file << (int) ADJ[i].size() << " "; // valence
for(j=0;j<(int) ADJ[i].size();j++){
output_file << ADJ[i][j] << " "; // adjacency data
};
output_file << " " << LOC[i][0] << " " << LOC[i][1] << " " << LOC[i][2] << "\n";
};
for(i=0;i<3;i++){ // incolor
output_file << incolor[i] << " ";
};
output_file << "\n";
for(i=0;i<3;i++){ // outcolor
output_file << outcolor[i] << " ";
};
output_file.close();
cout << "wrote to file.\n";
};
void mesh::write_povray_file(){ // write output in povray format
string S;
ofstream output_file;
int i,j,k,l;
cout << "Enter name of file to write to: ";
getline(cin, S, '\n');
cout << "Writing to file " << S << "\n";
output_file.open(S.c_str());
output_file << "camera { \n";
output_file << " location <0, 0, 3>\n";
output_file << " look_at <0, 0, 0>\n";
output_file << "} \n";
output_file << "background {color rgb <1,1,1>}\n";
output_file << "light_source { <0, 0, 10> color rgb<1, 1, 1> }\n";
output_file << "#declare Topcolor = texture {\n";
output_file << " pigment { color rgb< ";
output_file << outcolor[0] << " , " << outcolor[1] << " , " << outcolor[2] << " > }\n";
output_file << " finish { ambient 0.2 diffuse 0.5 }\n";
output_file << "}\n";
output_file << "mesh {\n";
sort_faces();
for(i=0;i<(int) FAC.size();i++){
j=FAC[i][0];
k=FAC[i][1];
l=FAC[i][2];
output_file << " triangle { <" << LOC[j][0] << " , " << LOC[j][1] << " , " << LOC[j][2] << " >,";
output_file << " <" << LOC[k][0] << " , " << LOC[k][1] << " , " << LOC[k][2] << " >,";
output_file << " <" << LOC[l][0] << " , " << LOC[l][1] << " , " << LOC[l][2] << " >\n";
output_file << " texture { Topcolor }\n";
output_file << " }\n";
};
output_file << "}\n";
output_file.close();
cout << "wrote to file.\n";
};
void mesh::write_mesh_to_cout(){ // write mesh to cout
int i,j;
for(i=0;i<(int) ADJ.size();i++){
cout << "vertex " << i << " ";
for(j=0;j<(int) ADJ[i].size();j++){
cout << ADJ[i][j] << " ";
};
cout << " " << LOC[i][0] << " " << LOC[i][1] << " " << LOC[i][2] << "\n";
};
cout << "incolor: ";
for(i=0;i<3;i++){
cout << incolor[i] << " ";
};
cout << "outcolor: ";
for(i=0;i<3;i++){
cout << outcolor[i] << " ";
};
cout << "\n";
};