source/3d/vehicletype.cpp

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2010  Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <msp/gl/meshbuilder.h>
   9 #include <msp/gl/technique.h>
  10 #include <msp/gl/texture2d.h>
  11 #include <msp/gl/vector.h>
  12 #include "catalogue.h"
  13 #include "vehicletype.h"
  14
  15 using namespace std;
  16 using namespace Msp;
  17
  18 namespace {
  19
  20 template<typename T>
  21 T get(const map<string, string> &params, const string &key, T def = T())
  22 {
  23         map<string, string>::const_iterator i = params.find(key);
  24         if(i==params.end())
  25                 return def;
  26
  27         return lexical_cast<T>(i->second);
  28 }
  29
  30 }
  31
  32 namespace R2C2 {
  33
  34 VehicleType3D::VehicleType3D(const Catalogue3D &c, const VehicleType &t):
  35         catalogue(c),
  36         type(t),
  37         body_object(0),
  38         axle_objects(1)
  39 {
  40         body_object = get_object(type.get_object());
  41
  42         const vector<VehicleType::Axle> &axles = type.get_axles();
  43         for(vector<VehicleType::Axle>::const_iterator i=axles.begin(); i!=axles.end(); ++i)
  44                 axle_objects[0].push_back(get_object(i->object));
  45
  46         const vector<VehicleType::Bogie> &bogies = type.get_bogies();
  47         for(vector<VehicleType::Bogie>::const_iterator i=bogies.begin(); i!=bogies.end(); ++i)
  48         {
  49                 bogie_objects.push_back(get_object(i->object));
  50                 axle_objects.push_back(vector<GL::Object *>());
  51                 for(vector<VehicleType::Axle>::const_iterator j=i->axles.begin(); j!=i->axles.end(); ++j)
  52                         axle_objects.back().push_back(get_object(j->object));
  53         }
  54 }
  55
  56 VehicleType3D::~VehicleType3D()
  57 {
  58         for(map<string, GL::Object *>::iterator i=objects.begin(); i!=objects.end(); ++i)
  59                 delete i->second;
  60 }
  61
  62 const GL::Object *VehicleType3D::get_axle_object(unsigned i) const
  63 {
  64         if(i>=axle_objects[0].size())
  65                 throw InvalidParameterValue("Axle index out of range");
  66         return axle_objects[0][i];
  67 }
  68
  69 const GL::Object *VehicleType3D::get_bogie_object(unsigned i) const
  70 {
  71         if(i>=bogie_objects.size())
  72                 throw InvalidParameterValue("Bogie index out of range");
  73         return bogie_objects[i];
  74 }
  75
  76 const GL::Object *VehicleType3D::get_bogie_axle_object(unsigned i, unsigned j) const
  77 {
  78         if(i>=bogie_objects.size())
  79                 throw InvalidParameterValue("Bogie index out of range");
  80         if(j>=axle_objects[i+1].size())
  81                 throw InvalidParameterValue("Axle index out of range");
  82         return axle_objects[i+1][j];
  83 }
  84
  85 GL::Object *VehicleType3D::get_object(const string &name)
  86 {
  87         if(name.empty())
  88                 return 0;
  89
  90         GL::Object *&ptr = objects[name];
  91         if(!ptr)
  92         {
  93                 if(name[0]==':')
  94                 {
  95                         string::size_type colon = name.find(':', 1);
  96                         string kind = name.substr(1, colon-1);
  97
  98                         map<string, string> params;
  99                         params["length"] = lexical_cast(type.get_length()*1000);
 100                         params["width"] = lexical_cast(type.get_width()*1000);
 101                         params["height"] = lexical_cast(type.get_height()*1000);
 102                         if(colon!=string::npos)
 103                         {
 104                                 string::size_type start = colon+1;
 105                                 while(1)
 106                                 {
 107                                         string::size_type equals = name.find('=', start);
 108                                         string::size_type comma = name.find(',', start);
 109                                         if(equals<comma)
 110                                                 params[name.substr(start, equals-start)] = name.substr(equals+1, comma-equals-1);
 111                                         else
 112                                                 params[name.substr(start, comma-start)] = string();
 113
 114                                         if(comma==string::npos)
 115                                                 break;
 116                                         start = comma+1;
 117                                 }
 118                         }
 119
 120                         GL::Mesh *mesh = 0;
 121                         if(kind=="openwagon")
 122                                 mesh = create_open_wagon(params);
 123                         else if(kind=="coveredwagon")
 124                                 mesh = create_covered_wagon(params);
 125                         else if(kind=="flatwagon")
 126                                 mesh = create_flat_wagon(params);
 127
 128                         if(mesh)
 129                         {
 130                                 ptr = new GL::Object;
 131                                 ptr->set_mesh(mesh);
 132                                 ptr->set_technique(create_technique(params));
 133                         }
 134                 }
 135                 else
 136                 {
 137                         ptr = new GL::Object;
 138                         DataFile::load(*ptr, name);
 139                 }
 140         }
 141         return ptr;
 142 }
 143
 144 GL::Technique *VehicleType3D::create_technique(const map<string, string> &params)
 145 {
 146         string color_str = get<string>(params, "color", "808080");
 147         unsigned color = lexical_cast<unsigned>(color_str, "x");
 148         string color2_str = get<string>(params, "color2", color_str);
 149         unsigned color2 = lexical_cast<unsigned>(color2_str, "x");
 150
 151         GL::Technique *tech = new GL::Technique;
 152         GL::RenderPass &pass = tech->add_pass(GL::Tag());
 153         GL::Material *mat = new GL::Material;
 154         mat->set_diffuse(GL::Color(1));
 155         pass.set_material(mat);
 156         GL::Texture2D *tex = new GL::Texture2D;
 157         tex->storage(GL::RGB, 2, 1, 0);
 158         tex->set_min_filter(GL::NEAREST);
 159         tex->set_mag_filter(GL::NEAREST);
 160         unsigned char data[6] = { color>>16, color>>8, color, color2>>16, color2>>8, color2 };
 161         tex->image(0, GL::RGB, GL::UNSIGNED_BYTE, data);
 162         pass.set_texture(0, tex);
 163
 164         return tech;
 165 }
 166
 167 GL::Mesh *VehicleType3D::create_open_wagon(const map<string, string> &params)
 168 {
 169         float length = get<float>(params, "length")/1000;
 170         float width = get<float>(params, "width")/1000;
 171         float height = get<float>(params, "height")/1000;
 172         float clearance = get<float>(params, "clearance", 900*catalogue.get_catalogue().get_scale())/1000;
 173         float border = get<float>(params, "border", 40*catalogue.get_catalogue().get_scale())/1000;
 174
 175         GL::Mesh *mesh = new GL::Mesh((GL::NORMAL3, GL::TEXCOORD2, GL::VERTEX3));
 176         GL::MeshBuilder bld(*mesh);
 177
 178         for(unsigned i=0; i<16; ++i)
 179         {
 180                 float x = length/2;
 181                 float y = width/2;
 182                 if(i>=8)
 183                 {
 184                         x -= border;
 185                         y -= border;
 186                 }
 187                 if((i+1)%4<2)
 188                         x = -x;
 189                 if(i%4<2)
 190                         y = -y;
 191
 192                 float z = height;
 193                 if(i<4)
 194                         z = clearance;
 195                 else if(i>=12)
 196                         z = clearance+0.1*catalogue.get_catalogue().get_scale();
 197
 198                 bld.texcoord((i>=12 ? 0.75 : 0.25), 0.5);
 199                 bld.normal(0, 0, (i<4 ? -1 : 1));
 200                 bld.vertex(x, y, z);
 201                 bld.texcoord((i>=8 ? 0.75 : 0.25), 0.5);
 202                 bld.normal(((x<0)==(i<8) ? -1 : 1), 0, 0);
 203                 bld.vertex(x, y, z);
 204                 bld.normal(0, ((y<0)==(i<8) ? -1 : 1), 0);
 205                 bld.vertex(x, y, z);
 206         }
 207
 208         bld.begin(GL::QUADS);
 209         for(unsigned i=0; i<3; ++i)
 210                 for(unsigned j=0; j<4; ++j)
 211                 {
 212                         unsigned k = (i==1 ? 0 : 2-j%2);
 213                         bld.element((i*4+j)*3+k);
 214                         bld.element((i*4+(j+1)%4)*3+k);
 215                         bld.element(((i+1)*4+(j+1)%4)*3+k);
 216                         bld.element(((i+1)*4+j)*3+k);
 217                 }
 218         for(unsigned i=4; i--;)
 219                 bld.element(i*3);
 220         for(unsigned i=0; i<4; ++i)
 221                 bld.element((12+i)*3);
 222         bld.end();
 223
 224         return mesh;
 225 }
 226
 227 GL::Mesh *VehicleType3D::create_covered_wagon(const map<string, string> &params)
 228 {
 229         float length = get<float>(params, "length")/1000;
 230         float width = get<float>(params, "width")/1000;
 231         float height = get<float>(params, "height")/1000;
 232         float clearance = get<float>(params, "clearance", 900*catalogue.get_catalogue().get_scale())/1000;
 233         float roof = get<float>(params, "roof", width*250)/1000;
 234
 235         GL::Mesh *mesh = new GL::Mesh((GL::NORMAL3, GL::TEXCOORD2, GL::VERTEX3));
 236         GL::MeshBuilder bld(*mesh);
 237
 238         for(unsigned i=0; i<12; ++i)
 239         {
 240                 float x = length/2;
 241                 float y = width/2;
 242                 if(i>=8)
 243                         y /= 3;
 244                 if((i+1)%4<2)
 245                         x = -x;
 246                 if(i%4<2)
 247                         y = -y;
 248
 249                 float z = height;
 250                 if(i<4)
 251                         z = clearance;
 252                 else if(i<8)
 253                         z -= roof;
 254
 255                 if(i<4)
 256                 {
 257                         bld.normal(0, 0, -1);
 258                         bld.texcoord(0.25, 0.5);
 259                 }
 260                 else
 261                 {
 262                         float a = atan2(roof/(i>=8 ? 3 : 1), width/2);
 263                         if(y<0)
 264                                 a = -a;
 265                         bld.normal(0, sin(a), cos(a));
 266                         bld.texcoord(0.75, 0.5);
 267                 }
 268                 bld.vertex(x, y, z);
 269
 270                 bld.texcoord(0.25, 0.5);
 271                 bld.normal((x<0 ? -1 : 1), 0, 0);
 272                 bld.vertex(x, y, z);
 273                 bld.normal(0, (y<0 ? -1 : 1), 0);
 274                 bld.vertex(x, y, z);
 275         }
 276
 277         bld.begin(GL::QUADS);
 278         for(unsigned i=0; i<2; ++i)
 279                 for(unsigned j=0; j<4; ++j)
 280                 {
 281                         unsigned k = ((i==1 && j%2==0) ? 0 : 2-j%2);
 282                         bld.element((i*4+j)*3+k);
 283                         bld.element((i*4+(j+1)%4)*3+k);
 284                         bld.element(((i+1)*4+(j+1)%4)*3+k);
 285                         bld.element(((i+1)*4+j)*3+k);
 286                 }
 287         for(unsigned i=4; i--;)
 288                 bld.element(i*3);
 289         for(unsigned i=0; i<4; ++i)
 290                 bld.element((8+i)*3);
 291         bld.end();
 292
 293         return mesh;
 294 }
 295
 296 GL::Mesh *VehicleType3D::create_flat_wagon(const map<string, string> &params)
 297 {
 298         float length = get<float>(params, "length")/1000;
 299         float width = get<float>(params, "width")/1000;
 300         float height = get<float>(params, "height")/1000;
 301         float clearance = get<float>(params, "clearance", 900*catalogue.get_catalogue().get_scale())/1000;
 302
 303         GL::Mesh *mesh = new GL::Mesh((GL::NORMAL3, GL::TEXCOORD2, GL::VERTEX3));
 304         GL::MeshBuilder bld(*mesh);
 305
 306         for(unsigned i=0; i<8; ++i)
 307         {
 308                 float x = length/2;
 309                 float y = width/2;
 310                 if((i+1)%4<2)
 311                         x = -x;
 312                 if(i%4<2)
 313                         y = -y;
 314
 315                 float z = (i<4 ? clearance : height);
 316
 317                 bld.texcoord((i>=4 ? 0.75 : 0.25), 0.5);
 318                 bld.normal(0, 0, (i<4 ? -1 : 1));
 319                 bld.vertex(x, y, z);
 320                 bld.texcoord(0.25, 0.5);
 321                 bld.normal(((x<0)==(i<8) ? -1 : 1), 0, 0);
 322                 bld.vertex(x, y, z);
 323                 bld.normal(0, ((y<0)==(i<8) ? -1 : 1), 0);
 324                 bld.vertex(x, y, z);
 325         }
 326
 327         bld.begin(GL::QUADS);
 328         for(unsigned i=0; i<4; ++i)
 329         {
 330                 unsigned j = 2-i%2;
 331                 bld.element(i*3+j);
 332                 bld.element(((i+1)%4)*3+j);
 333                 bld.element((4+(i+1)%4)*3+j);
 334                 bld.element((4+i)*3+j);
 335         }
 336         for(unsigned i=4; i--;)
 337                 bld.element(i*3);
 338         for(unsigned i=0; i<4; ++i)
 339                 bld.element((4+i)*3);
 340         bld.end();
 341
 342         return mesh;
 343 }
 344
 345 } // namespace R2C2