source/3d/vehicletype.cpp

   1 #include <msp/gl/meshbuilder.h>
   2 #include <msp/gl/technique.h>
   3 #include <msp/gl/texture2d.h>
   4 #include <msp/gl/vector.h>
   5 #include "catalogue.h"
   6 #include "vehicletype.h"
   7
   8 using namespace std;
   9 using namespace Msp;
  10
  11 namespace {
  12
  13 template<typename T>
  14 T get(const map<string, string> &params, const string &key, T def = T())
  15 {
  16         map<string, string>::const_iterator i = params.find(key);
  17         if(i==params.end())
  18                 return def;
  19
  20         return lexical_cast<T>(i->second);
  21 }
  22
  23 }
  24
  25 namespace R2C2 {
  26
  27 VehicleType3D::VehicleType3D(Catalogue3D &c, const VehicleType &t):
  28         catalogue(c),
  29         type(t),
  30         body_object(0),
  31         axle_objects(1)
  32 {
  33         body_object = get_object(type.get_object());
  34
  35         const vector<VehicleType::Axle> &axles = type.get_fixed_axles();
  36         for(vector<VehicleType::Axle>::const_iterator i=axles.begin(); i!=axles.end(); ++i)
  37                 axle_objects[0].push_back(get_object(i->object));
  38
  39         const vector<VehicleType::Bogie> &bogies = type.get_bogies();
  40         for(vector<VehicleType::Bogie>::const_iterator i=bogies.begin(); i!=bogies.end(); ++i)
  41         {
  42                 bogie_objects.push_back(get_object(i->object));
  43                 axle_objects.push_back(vector<GL::Object *>());
  44                 for(vector<VehicleType::Axle>::const_iterator j=i->axles.begin(); j!=i->axles.end(); ++j)
  45                         axle_objects.back().push_back(get_object(j->object));
  46         }
  47
  48         const vector<VehicleType::Rod> &rods = type.get_rods();
  49         for(vector<VehicleType::Rod>::const_iterator i=rods.begin(); i!=rods.end(); ++i)
  50                 rod_objects.push_back(get_object(i->object));
  51 }
  52
  53 VehicleType3D::~VehicleType3D()
  54 {
  55         for(map<string, GL::Object *>::iterator i=objects.begin(); i!=objects.end(); ++i)
  56                 delete i->second;
  57 }
  58
  59 const GL::Object *VehicleType3D::get_fixed_axle_object(unsigned i) const
  60 {
  61         if(i>=axle_objects[0].size())
  62                 throw InvalidParameterValue("Axle index out of range");
  63         return axle_objects[0][i];
  64 }
  65
  66 const GL::Object *VehicleType3D::get_bogie_object(unsigned i) const
  67 {
  68         if(i>=bogie_objects.size())
  69                 throw InvalidParameterValue("Bogie index out of range");
  70         return bogie_objects[i];
  71 }
  72
  73 const GL::Object *VehicleType3D::get_bogie_axle_object(unsigned i, unsigned j) const
  74 {
  75         if(i>=bogie_objects.size())
  76                 throw InvalidParameterValue("Bogie index out of range");
  77         if(j>=axle_objects[i+1].size())
  78                 throw InvalidParameterValue("Axle index out of range");
  79         return axle_objects[i+1][j];
  80 }
  81
  82 const GL::Object *VehicleType3D::get_rod_object(unsigned i) const
  83 {
  84         if(i>=rod_objects.size())
  85                 throw InvalidParameterValue("Rod index out of range");
  86         return rod_objects[i];
  87 }
  88
  89 GL::Object *VehicleType3D::get_object(const string &name)
  90 {
  91         if(name.empty())
  92                 return 0;
  93
  94         GL::Object *&ptr = objects[name];
  95         if(!ptr)
  96         {
  97                 if(name[0]==':')
  98                 {
  99                         string::size_type colon = name.find(':', 1);
 100                         string kind = name.substr(1, colon-1);
 101
 102                         map<string, string> params;
 103                         params["length"] = lexical_cast(type.get_length()*1000);
 104                         params["width"] = lexical_cast(type.get_width()*1000);
 105                         params["height"] = lexical_cast(type.get_height()*1000);
 106                         if(colon!=string::npos)
 107                         {
 108                                 string::size_type start = colon+1;
 109                                 while(1)
 110                                 {
 111                                         string::size_type equals = name.find('=', start);
 112                                         string::size_type comma = name.find(',', start);
 113                                         if(equals<comma)
 114                                                 params[name.substr(start, equals-start)] = name.substr(equals+1, comma-equals-1);
 115                                         else
 116                                                 params[name.substr(start, comma-start)] = string();
 117
 118                                         if(comma==string::npos)
 119                                                 break;
 120                                         start = comma+1;
 121                                 }
 122                         }
 123
 124                         GL::Mesh *mesh = 0;
 125                         if(kind=="openwagon")
 126                                 mesh = create_open_wagon(params);
 127                         else if(kind=="coveredwagon")
 128                                 mesh = create_covered_wagon(params);
 129                         else if(kind=="flatwagon")
 130                                 mesh = create_flat_wagon(params);
 131
 132                         if(mesh)
 133                         {
 134                                 ptr = new GL::Object;
 135                                 ptr->set_mesh(mesh);
 136                                 ptr->set_technique(create_technique(params));
 137                         }
 138                 }
 139                 else
 140                         return catalogue.get<GL::Object>(name);
 141         }
 142         return ptr;
 143 }
 144
 145 GL::Technique *VehicleType3D::create_technique(const map<string, string> &params)
 146 {
 147         string color_str = get<string>(params, "color", "808080");
 148         unsigned color = lexical_cast<unsigned>(color_str, "x");
 149         string color2_str = get<string>(params, "color2", color_str);
 150         unsigned color2 = lexical_cast<unsigned>(color2_str, "x");
 151
 152         GL::Technique *tech = new GL::Technique;
 153         GL::RenderPass &pass = tech->add_pass(GL::Tag());
 154         GL::Material *mat = new GL::Material;
 155         mat->set_diffuse(GL::Color(1));
 156         pass.set_material(mat);
 157         GL::Texture2D *tex = new GL::Texture2D;
 158         tex->storage(GL::RGB, 2, 1);
 159         tex->set_min_filter(GL::NEAREST);
 160         tex->set_mag_filter(GL::NEAREST);
 161         unsigned char data[6] = { color>>16, color>>8, color, color2>>16, color2>>8, color2 };
 162         tex->image(0, GL::RGB, GL::UNSIGNED_BYTE, data);
 163         pass.set_texture(0, tex);
 164
 165         return tech;
 166 }
 167
 168 GL::Mesh *VehicleType3D::create_open_wagon(const map<string, string> &params)
 169 {
 170         float length = get<float>(params, "length")/1000;
 171         float width = get<float>(params, "width")/1000;
 172         float height = get<float>(params, "height")/1000;
 173         float clearance = get<float>(params, "clearance", 900*catalogue.get_catalogue().get_scale())/1000;
 174         float border = get<float>(params, "border", 40*catalogue.get_catalogue().get_scale())/1000;
 175
 176         GL::Mesh *mesh = new GL::Mesh((GL::NORMAL3, GL::TEXCOORD2, GL::VERTEX3));
 177         GL::MeshBuilder bld(*mesh);
 178
 179         for(unsigned i=0; i<16; ++i)
 180         {
 181                 float x = length/2;
 182                 float y = width/2;
 183                 if(i>=8)
 184                 {
 185                         x -= border;
 186                         y -= border;
 187                 }
 188                 if((i+1)%4<2)
 189                         x = -x;
 190                 if(i%4<2)
 191                         y = -y;
 192
 193                 float z = height;
 194                 if(i<4)
 195                         z = clearance;
 196                 else if(i>=12)
 197                         z = clearance+0.1*catalogue.get_catalogue().get_scale();
 198
 199                 bld.texcoord((i>=12 ? 0.75 : 0.25), 0.5);
 200                 bld.normal(0, 0, (i<4 ? -1 : 1));
 201                 bld.vertex(x, y, z);
 202                 bld.texcoord((i>=8 ? 0.75 : 0.25), 0.5);
 203                 bld.normal(((x<0)==(i<8) ? -1 : 1), 0, 0);
 204                 bld.vertex(x, y, z);
 205                 bld.normal(0, ((y<0)==(i<8) ? -1 : 1), 0);
 206                 bld.vertex(x, y, z);
 207         }
 208
 209         bld.begin(GL::QUADS);
 210         for(unsigned i=0; i<3; ++i)
 211                 for(unsigned j=0; j<4; ++j)
 212                 {
 213                         unsigned k = (i==1 ? 0 : 2-j%2);
 214                         bld.element((i*4+j)*3+k);
 215                         bld.element((i*4+(j+1)%4)*3+k);
 216                         bld.element(((i+1)*4+(j+1)%4)*3+k);
 217                         bld.element(((i+1)*4+j)*3+k);
 218                 }
 219         for(unsigned i=4; i--;)
 220                 bld.element(i*3);
 221         for(unsigned i=0; i<4; ++i)
 222                 bld.element((12+i)*3);
 223         bld.end();
 224
 225         return mesh;
 226 }
 227
 228 GL::Mesh *VehicleType3D::create_covered_wagon(const map<string, string> &params)
 229 {
 230         float length = get<float>(params, "length")/1000;
 231         float width = get<float>(params, "width")/1000;
 232         float height = get<float>(params, "height")/1000;
 233         float clearance = get<float>(params, "clearance", 900*catalogue.get_catalogue().get_scale())/1000;
 234         float roof = get<float>(params, "roof", width*250)/1000;
 235
 236         GL::Mesh *mesh = new GL::Mesh((GL::NORMAL3, GL::TEXCOORD2, GL::VERTEX3));
 237         GL::MeshBuilder bld(*mesh);
 238
 239         for(unsigned i=0; i<12; ++i)
 240         {
 241                 float x = length/2;
 242                 float y = width/2;
 243                 if(i>=8)
 244                         y /= 3;
 245                 if((i+1)%4<2)
 246                         x = -x;
 247                 if(i%4<2)
 248                         y = -y;
 249
 250                 float z = height;
 251                 if(i<4)
 252                         z = clearance;
 253                 else if(i<8)
 254                         z -= roof;
 255
 256                 if(i<4)
 257                 {
 258                         bld.normal(0, 0, -1);
 259                         bld.texcoord(0.25, 0.5);
 260                 }
 261                 else
 262                 {
 263                         float a = atan2(roof/(i>=8 ? 3 : 1), width/2);
 264                         if(y<0)
 265                                 a = -a;
 266                         bld.normal(0, sin(a), cos(a));
 267                         bld.texcoord(0.75, 0.5);
 268                 }
 269                 bld.vertex(x, y, z);
 270
 271                 bld.texcoord(0.25, 0.5);
 272                 bld.normal((x<0 ? -1 : 1), 0, 0);
 273                 bld.vertex(x, y, z);
 274                 bld.normal(0, (y<0 ? -1 : 1), 0);
 275                 bld.vertex(x, y, z);
 276         }
 277
 278         bld.begin(GL::QUADS);
 279         for(unsigned i=0; i<2; ++i)
 280                 for(unsigned j=0; j<4; ++j)
 281                 {
 282                         unsigned k = ((i==1 && j%2==0) ? 0 : 2-j%2);
 283                         bld.element((i*4+j)*3+k);
 284                         bld.element((i*4+(j+1)%4)*3+k);
 285                         bld.element(((i+1)*4+(j+1)%4)*3+k);
 286                         bld.element(((i+1)*4+j)*3+k);
 287                 }
 288         for(unsigned i=4; i--;)
 289                 bld.element(i*3);
 290         for(unsigned i=0; i<4; ++i)
 291                 bld.element((8+i)*3);
 292         bld.end();
 293
 294         return mesh;
 295 }
 296
 297 GL::Mesh *VehicleType3D::create_flat_wagon(const map<string, string> &params)
 298 {
 299         float length = get<float>(params, "length")/1000;
 300         float width = get<float>(params, "width")/1000;
 301         float height = get<float>(params, "height")/1000;
 302         float clearance = get<float>(params, "clearance", 900*catalogue.get_catalogue().get_scale())/1000;
 303
 304         GL::Mesh *mesh = new GL::Mesh((GL::NORMAL3, GL::TEXCOORD2, GL::VERTEX3));
 305         GL::MeshBuilder bld(*mesh);
 306
 307         for(unsigned i=0; i<8; ++i)
 308         {
 309                 float x = length/2;
 310                 float y = width/2;
 311                 if((i+1)%4<2)
 312                         x = -x;
 313                 if(i%4<2)
 314                         y = -y;
 315
 316                 float z = (i<4 ? clearance : height);
 317
 318                 bld.texcoord((i>=4 ? 0.75 : 0.25), 0.5);
 319                 bld.normal(0, 0, (i<4 ? -1 : 1));
 320                 bld.vertex(x, y, z);
 321                 bld.texcoord(0.25, 0.5);
 322                 bld.normal(((x<0)==(i<8) ? -1 : 1), 0, 0);
 323                 bld.vertex(x, y, z);
 324                 bld.normal(0, ((y<0)==(i<8) ? -1 : 1), 0);
 325                 bld.vertex(x, y, z);
 326         }
 327
 328         bld.begin(GL::QUADS);
 329         for(unsigned i=0; i<4; ++i)
 330         {
 331                 unsigned j = 2-i%2;
 332                 bld.element(i*3+j);
 333                 bld.element(((i+1)%4)*3+j);
 334                 bld.element((4+(i+1)%4)*3+j);
 335                 bld.element((4+i)*3+j);
 336         }
 337         for(unsigned i=4; i--;)
 338                 bld.element(i*3);
 339         for(unsigned i=0; i<4; ++i)
 340                 bld.element((4+i)*3);
 341         bld.end();
 342
 343         return mesh;
 344 }
 345
 346 } // namespace R2C2