src/model/model.cpp

   1 #include "Model.hpp"
   2 #include "ModelRegistry.hpp"
   3 #include "Instance.hpp"
   4 #include "Part.hpp"
   5
   6 #include "Shape.hpp"
   7 #include "ShapeRegistry.hpp"
   8 #include "../io/TokenStreamReader.hpp"
   9 #include "../graphics/DirectionalLighting.hpp"
  10 #include "../graphics/EntityMesh.hpp"
  11 #include "../shared/ResourceIndex.hpp"
  12
  13 #include <iostream>
  14 #include <glm/gtx/quaternion.hpp>
  15 #include <glm/gtx/io.hpp>
  16
  17
  18 namespace blank {
  19
  20 Instance::Instance()
  21 : model(nullptr)
  22 , state() {
  23
  24 }
  25
  26 Instance::~Instance() {
  27
  28 }
  29
  30 Part::State &Instance::BodyState() noexcept {
  31         return state[model->GetBodyPart().ID()];
  32 }
  33
  34 glm::mat4 Instance::BodyTransform() const noexcept {
  35         return model->GetBodyPart().GlobalTransform(*this);
  36 }
  37
  38 Part::State &Instance::EyesState() noexcept {
  39         return state[model->GetEyesPart().ID()];
  40 }
  41
  42 glm::mat4 Instance::EyesTransform() const noexcept {
  43         return model->GetEyesPart().GlobalTransform(*this);
  44 }
  45
  46 void Instance::Render(const glm::mat4 &M, DirectionalLighting &prog) {
  47         model->RootPart().Render(M, *this, prog);
  48 }
  49
  50
  51 Model::Model()
  52 : id(0)
  53 , root()
  54 , part()
  55 , body_id(0)
  56 , eyes_id(0) {
  57
  58 }
  59
  60 void Model::Enumerate() {
  61         part.clear();
  62         part.resize(root.Enumerate(0), nullptr);
  63         root.Index(part);
  64 }
  65
  66 void Model::Instantiate(Instance &inst) const {
  67         inst.model = this;
  68         inst.state.clear();
  69         inst.state.resize(part.size());
  70 }
  71
  72
  73 ModelRegistry::ModelRegistry()
  74 : models()
  75 , name_index() {
  76
  77 }
  78
  79 Model &ModelRegistry::Add(const std::string &name) {
  80         models.emplace_back(new Model());
  81         models.back()->ID(models.size());
  82         name_index[name] = &*models.back();
  83         return *models.back();
  84 }
  85
  86 Model &ModelRegistry::Get(const std::string &name) {
  87         auto entry = name_index.find(name);
  88         if (entry != name_index.end()) {
  89                 return *entry->second;
  90         } else {
  91                 throw std::runtime_error("unknown model " + name);
  92         }
  93 }
  94
  95 const Model &ModelRegistry::Get(const std::string &name) const {
  96         auto entry = name_index.find(name);
  97         if (entry != name_index.end()) {
  98                 return *entry->second;
  99         } else {
 100                 throw std::runtime_error("unknown model " + name);
 101         }
 102 }
 103
 104
 105 Part::Part()
 106 : parent(nullptr)
 107 , shape(nullptr)
 108 , children()
 109 , tex_map()
 110 , mesh()
 111 , initial()
 112 , hsl_mod(0, 255, 255)
 113 , rgb_mod(255, 255, 255)
 114 , id(0) {
 115
 116 }
 117
 118 Part::~Part() {
 119
 120 }
 121
 122 void Part::Read(TokenStreamReader &in, ResourceIndex &tex_index, const ShapeRegistry &shapes) {
 123         std::string name;
 124         std::string shape_name;
 125         std::string tex_name;
 126         glm::vec3 color_conv;
 127         in.Skip(Token::ANGLE_BRACKET_OPEN);
 128         while (in.HasMore() && in.Peek().type != Token::ANGLE_BRACKET_CLOSE) {
 129                 in.ReadIdentifier(name);
 130                 in.Skip(Token::EQUALS);
 131                 if (name == "shape") {
 132                         in.ReadIdentifier(shape_name);
 133                         shape = &shapes.Get(shape_name);
 134                 } else if (name == "position") {
 135                         in.ReadVec(initial.position);
 136                 } else if (name == "orientation") {
 137                         in.ReadQuat(initial.orientation);
 138                 } else if (name == "hsl_mod") {
 139                         in.ReadVec(color_conv);
 140                         hsl_mod = glm::tvec3<unsigned char>(color_conv * 255.0f);
 141                 } else if (name == "rgb_mod") {
 142                         in.ReadVec(color_conv);
 143                         rgb_mod = glm::tvec3<unsigned char>(color_conv * 255.0f);
 144                 } else if (name == "textures") {
 145                         in.Skip(Token::BRACKET_OPEN);
 146                         while (in.HasMore() && in.Peek().type != Token::BRACKET_CLOSE) {
 147                                 in.ReadString(tex_name);
 148                                 tex_map.push_back(tex_index.GetID(tex_name));
 149                                 if (in.Peek().type == Token::COMMA) {
 150                                         in.Skip(Token::COMMA);
 151                                 }
 152                         }
 153                         in.Skip(Token::BRACKET_CLOSE);
 154                 } else if (name == "children") {
 155                         in.Skip(Token::BRACKET_OPEN);
 156                         while (in.HasMore() && in.Peek().type != Token::BRACKET_CLOSE) {
 157                                 Part &child = AddChild();
 158                                 child.Read(in, tex_index, shapes);
 159                                 if (in.Peek().type == Token::COMMA) {
 160                                         in.Skip(Token::COMMA);
 161                                 }
 162                         }
 163                         in.Skip(Token::BRACKET_CLOSE);
 164                 } else {
 165                         while (in.HasMore() && in.Peek().type != Token::SEMICOLON) {
 166                                 in.Next();
 167                         }
 168                 }
 169                 in.Skip(Token::SEMICOLON);
 170         }
 171         in.Skip(Token::ANGLE_BRACKET_CLOSE);
 172 }
 173
 174 Part &Part::AddChild() {
 175         children.emplace_back();
 176         children.back().parent = this;
 177         return children.back();
 178 }
 179
 180 std::uint16_t Part::Enumerate(std::uint16_t counter) noexcept {
 181         id = counter++;
 182         for (Part &part : children) {
 183                 counter = part.Enumerate(counter);
 184         }
 185         return counter;
 186 }
 187
 188 void Part::Index(std::vector<Part *> &index) noexcept {
 189         index[id] = this;
 190         for (Part &part : children) {
 191                 part.Index(index);
 192         }
 193 }
 194
 195 glm::mat4 Part::LocalTransform(const Instance &inst) const noexcept {
 196         glm::mat4 transform(toMat4(initial.orientation * inst.state[id].orientation));
 197         transform[3] = glm::vec4(initial.position + inst.state[id].position, 1.0f);
 198         return transform;
 199 }
 200
 201 glm::mat4 Part::GlobalTransform(const Instance &inst) const noexcept {
 202         if (parent) {
 203                 return parent->GlobalTransform(inst) * LocalTransform(inst);
 204         } else {
 205                 return LocalTransform(inst);
 206         }
 207 }
 208
 209 namespace {
 210
 211 EntityMesh::Buffer buf;
 212
 213 }
 214
 215 void Part::Render(
 216         const glm::mat4 &M,
 217         const Instance &inst,
 218         DirectionalLighting &prog
 219 ) const {
 220         glm::mat4 transform = M * LocalTransform(inst);
 221         if (shape && shape->IndexCount() > 0) {
 222                 if (!mesh) {
 223                         buf.Clear();
 224                         buf.hsl_mods.resize(shape->VertexCount(), hsl_mod);
 225                         buf.rgb_mods.resize(shape->VertexCount(), rgb_mod);
 226                         shape->Fill(buf, tex_map);
 227                         mesh.reset(new EntityMesh());
 228                         mesh->Update(buf);
 229                 }
 230                 prog.SetM(transform);
 231                 mesh->Draw();
 232         }
 233         for (const Part &part : children) {
 234                 part.Render(transform, inst, prog);
 235         }
 236 }
 237
 238 }