void generateMesh(int width, int length, int height, vector <vector <vector<Chamber> > > cells) { //note that this is lwh of actual cells (including walls)
Mesh maze;
srand(time(NULL));
maze.request_face_normals();
maze.request_vertex_normals();
maze.request_vertex_texcoords2D();
//maze.add_property(v_index);
//GENERATE MAIN VERTICES THAT WILL ANCHOR THE WALLS
Mesh::VertexHandle mainVert[length+1][height+1][width+1];
for (int i = 0; i <= height; i++){
for (int j = 0; j <= width; j++){
for (int k = 0; k <= length; k++){
double distortx = (double)(rand() % maxDistort)/(1.5*maxDistort/tileSize);
double distorty = (double)(rand() % maxDistort)/(1.5*maxDistort/tileSize);
double distortz = (double)(rand() % maxDistort)/(1.5*maxDistort/tileSize);
if (k != length-1 && (k%2==1 || k == 0)) distortx = -distortx;
if (j != width-1 && (j%2==1 || j == 0)) distortz = -distortz;
if (i != height-1 && (i%2==1 || i == 0)) distorty = -distorty;
Vec3f point(k * tileSize + distortx, i * tileSize + distorty, j * tileSize + distortz);
mainVert[k][i][j] = maze.add_vertex(point);
//maze.property(v_index, mainVert[k][i][j]) = i*height + j*width + k;
//maze.set_texcoord2D(mainVert[k][i][j], Vec2f(0,0));
}
}
}
//LINK UP MESH
vector<Mesh::VertexHandle> face_vhandles;
for (int i = 0; i < height; i++){
for (int j = 0; j < width; j++){
for (int k = 0; k < length; k++){
if (cells[k][i][j].isWall()){ //if it is a wall
int type = cells[k][i][j].type();
if (type == FC || type == YWALL){
//bottom
if (i == 0 || !cells[k][i-1][j].isWall() ){
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i][j]);
face_vhandles.push_back(mainVert[k][i][j+1]);
face_vhandles.push_back(mainVert[k+1][i][j+1]);
maze.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(mainVert[k+1][i][j]);
face_vhandles.push_back(mainVert[k][i][j]);
face_vhandles.push_back(mainVert[k+1][i][j+1]);
maze.add_face(face_vhandles);
n_faces += 2;
}
//top
if (i == height-1 || !cells[k][i+1][j].isWall()){
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i+1][j]);
face_vhandles.push_back(mainVert[k+1][i+1][j+1]);
face_vhandles.push_back(mainVert[k][i+1][j+1]);
maze.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i+1][j]);
face_vhandles.push_back(mainVert[k+1][i+1][j]);
face_vhandles.push_back(mainVert[k+1][i+1][j+1]);
maze.add_face(face_vhandles);
n_faces += 2;
}
}
if(type == FC || type == CORE || type == XWALL){
//left
if (k == 0 || !cells[k-1][i][j].isWall()){
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i][j]);
face_vhandles.push_back(mainVert[k][i+1][j]);
face_vhandles.push_back(mainVert[k][i+1][j+1]);
maze.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i][j]);
face_vhandles.push_back(mainVert[k][i+1][j+1]);
face_vhandles.push_back(mainVert[k][i][j+1]);
maze.add_face(face_vhandles);
n_faces += 2;
}
//right
if (k == length-1 || !cells[k+1][i][j].isWall()){
face_vhandles.clear();
face_vhandles.push_back(mainVert[k+1][i][j]);
face_vhandles.push_back(mainVert[k+1][i+1][j+1]);
face_vhandles.push_back(mainVert[k+1][i+1][j]);
maze.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(mainVert[k+1][i][j]);
face_vhandles.push_back(mainVert[k+1][i][j+1]);
face_vhandles.push_back(mainVert[k+1][i+1][j+1]);
maze.add_face(face_vhandles);
n_faces += 2;
}
}
if(type == FC || type == CORE || type == ZWALL){
//close
if (j == 0 || !cells[k][i][j-1].isWall()){
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i][j]);
face_vhandles.push_back(mainVert[k+1][i+1][j]);
face_vhandles.push_back(mainVert[k][i+1][j]);
maze.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i][j]);
face_vhandles.push_back(mainVert[k+1][i][j]);
face_vhandles.push_back(mainVert[k+1][i+1][j]);
maze.add_face(face_vhandles);
n_faces += 2;
}
//far
if (j == width-1 || !cells[k][i][j+1].isWall()){
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i][j+1]);
face_vhandles.push_back(mainVert[k][i+1][j+1]);
face_vhandles.push_back(mainVert[k+1][i+1][j+1]);
maze.add_face(face_vhandles);
face_vhandles.clear();
face_vhandles.push_back(mainVert[k][i][j+1]);
face_vhandles.push_back(mainVert[k+1][i+1][j+1]);
face_vhandles.push_back(mainVert[k+1][i][j+1]);
maze.add_face(face_vhandles);
n_faces += 2;
}
}
}
}
}
}
// subdivide
Loop sDivide;
sDivide.attach(maze);
bool success = sDivide(3);
sDivide.detach();
maze.update_normals();
double scale = max(max(length, width), height)*tileSize;
for (Mesh::ConstVertexIter vIt = maze.vertices_begin(); vIt != maze.vertices_end(); ++vIt){
Vec3f vert = maze.point(vIt);
double effect = 0.5 * octave_noise_3d(6.0, .75, 2, vert[0]/scale, vert[1]/scale, vert[2]/scale);
Vec3f shift(effect*maze.normal(vIt)[0], effect*maze.normal(vIt)[1], effect*maze.normal(vIt)[2]);
maze.set_point(vIt, vert - shift);
maze.set_texcoord2D(vIt, Vec2f(0,0));
}
maze.update_normals();
//WRITE OBJ FILE
IO::Options wopt;
wopt += IO::Options::VertexNormal;
wopt += IO::Options::VertexTexCoord;
if (!OpenMesh::IO::write_mesh(maze, "maze.obj", wopt))
{
std::cerr << "write error\n";
exit(1);
}
}
