git.sesse.net Git - casparcg/blob - common/diagnostics/graph.cpp

   1 #include "../stdafx.h"\r
   2 \r
   3 #include "graph.h"\r
   4 \r
   5 #pragma warning (disable : 4244)\r
   6 \r
   7 #include "../concurrency/executor.h"\r
   8 #include "../utility/timer.h"\r
   9 \r
  10 #include <SFML/Graphics.hpp>\r
  11 \r
  12 #include <boost/foreach.hpp>\r
  13 #include <boost/optional.hpp>\r
  14 #include <boost/circular_buffer.hpp>\r
  15 #include <boost/range/algorithm_ext/erase.hpp>\r
  16 \r
  17 #include <numeric>\r
  18 #include <map>\r
  19 #include <array>\r
  20 \r
  21 namespace caspar { namespace diagnostics {\r
  22                 \r
  23 struct drawable : public sf::Drawable\r
  24 {\r
  25         virtual ~drawable(){}\r
  26         virtual void render(sf::RenderTarget& target) = 0;\r
  27         virtual void Render(sf::RenderTarget& target) const { const_cast<drawable*>(this)->render(target);}\r
  28 };\r
  29 \r
  30 class context : public drawable\r
  31 {       \r
  32         timer timer_;\r
  33         sf::RenderWindow window_;\r
  34         \r
  35         std::list<std::shared_ptr<drawable>> drawables_;\r
  36                 \r
  37         executor executor_;\r
  38 public:                                 \r
  39 \r
  40         template<typename Func>\r
  41         static auto begin_invoke(Func&& func) -> boost::unique_future<decltype(func())> // noexcept\r
  42         {       \r
  43                 return get_instance().executor_.begin_invoke(std::forward<Func>(func)); \r
  44         }\r
  45 \r
  46         static void register_drawable(const std::shared_ptr<drawable>& drawable)\r
  47         {\r
  48                 begin_invoke([=]\r
  49                 {\r
  50                         get_instance().do_register_drawable(drawable);\r
  51                 });\r
  52         }\r
  53                         \r
  54 private:\r
  55         context()\r
  56         {\r
  57                 executor_.start();\r
  58                 executor_.begin_invoke([this]\r
  59                 {\r
  60                         window_.Create(sf::VideoMode(600, 1000), "CasparCG Diagnostics");\r
  61                         window_.SetPosition(0, 0);\r
  62                         window_.SetActive();\r
  63                         glEnable(GL_BLEND);\r
  64                         glEnable(GL_LINE_SMOOTH);\r
  65                         glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);\r
  66                         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);\r
  67                         tick();\r
  68                 });\r
  69         }\r
  70 \r
  71         void tick()\r
  72         {\r
  73                 sf::Event e;\r
  74                 while(window_.GetEvent(e)){}            \r
  75                 glClear(GL_COLOR_BUFFER_BIT);\r
  76                 window_.Draw(*this);\r
  77                 window_.Display();\r
  78                 timer_.tick(1.0/50.0);\r
  79                 executor_.begin_invoke([this]{tick();});\r
  80         }\r
  81 \r
  82         void render(sf::RenderTarget& target)\r
  83         {\r
  84                 auto count = std::max<size_t>(10, drawables_.size());\r
  85                 float target_dy = 1.0f/static_cast<float>(count);\r
  86 \r
  87                 float last_y = 0.0f;\r
  88                 int n = 0;\r
  89                 for(auto it = drawables_.begin(); it != drawables_.end(); ++n)\r
  90                 {\r
  91                         auto& drawable = *it;\r
  92                         if(!drawable.unique())\r
  93                         {\r
  94                                 drawable->SetScale(static_cast<float>(window_.GetWidth()), static_cast<float>(target_dy*window_.GetHeight()));\r
  95                                 float target_y = std::max(last_y, static_cast<float>(n * window_.GetHeight())*target_dy);\r
  96                                 drawable->SetPosition(0.0f, target_y);                  \r
  97                                 target.Draw(*drawable);                         \r
  98                                 ++it;           \r
  99                         }\r
 100                         else    \r
 101                                 it = drawables_.erase(it);                      \r
 102                 }               \r
 103         }       \r
 104         \r
 105         void do_register_drawable(const std::shared_ptr<drawable>& drawable)\r
 106         {\r
 107                 drawables_.push_back(drawable);\r
 108         }\r
 109         \r
 110         static context& get_instance()\r
 111         {\r
 112                 static context impl;\r
 113                 return impl;\r
 114         }\r
 115 };\r
 116 \r
 117 class guide : public drawable\r
 118 {\r
 119         float value_;\r
 120         color c_;\r
 121 public:\r
 122         guide(color c = color(1.0f, 1.0f, 1.0f, 0.6f)) \r
 123                 : value_(0.0f)\r
 124                 , c_(c){}\r
 125 \r
 126         guide(float value, color c = color(1.0f, 1.0f, 1.0f, 0.6f)) \r
 127                 : value_(value)\r
 128                 , c_(c){}\r
 129                         \r
 130         void set_color(color c) {c_ = c;}\r
 131 \r
 132         void render(sf::RenderTarget&)\r
 133         {               \r
 134                 glEnable(GL_LINE_STIPPLE);\r
 135                 glLineStipple(3, 0xAAAA);\r
 136                 glBegin(GL_LINE_STRIP); \r
 137                         glColor4f(c_.red, c_.green, c_.blue+0.2f, c_.alpha);            \r
 138                         glVertex3f(0.0f, (1.0f-value_) * 0.8f + 0.1f, 0.0f);            \r
 139                         glVertex3f(1.0f, (1.0f-value_) * 0.8f + 0.1f, 0.0f);    \r
 140                 glEnd();\r
 141                 glDisable(GL_LINE_STIPPLE);\r
 142         }\r
 143 };\r
 144 \r
 145 class line : public drawable\r
 146 {\r
 147         boost::optional<diagnostics::guide> guide_;\r
 148         boost::circular_buffer<std::pair<float, bool>> line_data_;\r
 149 \r
 150         std::vector<float>              tick_data_;\r
 151         bool                                    tick_tag_;\r
 152         color c_;\r
 153 public:\r
 154         line(size_t res = 600)\r
 155                 : line_data_(res)\r
 156                 , tick_tag_(false)\r
 157                 , c_(1.0f, 1.0f, 1.0f)\r
 158         {\r
 159                 line_data_.push_back(std::make_pair(-1.0f, false));\r
 160         }\r
 161         \r
 162         void update(float value)\r
 163         {\r
 164                 tick_data_.push_back(value);\r
 165         }\r
 166         \r
 167         void tag()\r
 168         {\r
 169                 tick_tag_ = true;\r
 170         }\r
 171 \r
 172         void guide(const guide& guide)\r
 173         {\r
 174                 guide_ = guide;\r
 175                 guide_->set_color(c_);\r
 176         }\r
 177         \r
 178         void set_color(color c)\r
 179         {\r
 180                 c_ = c;\r
 181                 if(guide_)\r
 182                         guide_->set_color(c_);\r
 183         }\r
 184 \r
 185         color get_color() const { return c_; }\r
 186         \r
 187         void render(sf::RenderTarget& target)\r
 188         {\r
 189                 float dx = 1.0f/static_cast<float>(line_data_.capacity());\r
 190                 float x = static_cast<float>(line_data_.capacity()-line_data_.size())*dx;\r
 191 \r
 192                 if(!tick_data_.empty())\r
 193                 {\r
 194                         float sum = std::accumulate(tick_data_.begin(), tick_data_.end(), 0.0) + std::numeric_limits<float>::min();\r
 195                         line_data_.push_back(std::make_pair(static_cast<float>(sum)/static_cast<float>(tick_data_.size()), tick_tag_));\r
 196                         tick_data_.clear();\r
 197                 }\r
 198                 else if(!line_data_.empty())\r
 199                 {\r
 200                         line_data_.push_back(std::make_pair(line_data_.back().first, tick_tag_));\r
 201                 }\r
 202                 tick_tag_ = false;\r
 203 \r
 204                 if(guide_)\r
 205                         target.Draw(*guide_);\r
 206                 \r
 207                 glBegin(GL_LINE_STRIP);\r
 208                 glColor4f(c_.red, c_.green, c_.blue, 1.0f);             \r
 209                 for(size_t n = 0; n < line_data_.size(); ++n)           \r
 210                         if(line_data_[n].first > -0.5)\r
 211                                 glVertex3f(x+n*dx, std::max(0.05f, std::min(0.95f, (1.0f-line_data_[n].first)*0.8f + 0.1f)), 0.0f);             \r
 212                 glEnd();\r
 213                                 \r
 214                 glEnable(GL_LINE_STIPPLE);\r
 215                 glLineStipple(3, 0xAAAA);\r
 216                 for(size_t n = 0; n < line_data_.size(); ++n)   \r
 217                 {\r
 218                         if(line_data_[n].second)\r
 219                         {\r
 220                                 glBegin(GL_LINE_STRIP);\r
 221                                 glColor4f(c_.red, c_.green, c_.blue, c_.alpha);                                 \r
 222                                         glVertex3f(x+n*dx, 0.0f, 0.0f);                         \r
 223                                         glVertex3f(x+n*dx, 1.0f, 0.0f);         \r
 224                                 glEnd();\r
 225                         }\r
 226                 }\r
 227                 glDisable(GL_LINE_STIPPLE);\r
 228         }\r
 229 };\r
 230 \r
 231 struct graph::implementation : public drawable\r
 232 {\r
 233         std::map<std::string, diagnostics::line> lines_;\r
 234         std::string name_;\r
 235 \r
 236         implementation(const std::string& name) \r
 237                 : name_(name){}\r
 238 \r
 239         void update(const std::string& name, float value)\r
 240         {\r
 241                 context::begin_invoke([=]\r
 242                 {\r
 243                         lines_[name].update(value);\r
 244                 });\r
 245         }\r
 246 \r
 247         void tag(const std::string& name)\r
 248         {\r
 249                 context::begin_invoke([=]\r
 250                 {\r
 251                         lines_[name].tag();\r
 252                 });\r
 253         }\r
 254 \r
 255         void set_color(const std::string& name, color c)\r
 256         {\r
 257                 context::begin_invoke([=]\r
 258                 {\r
 259                         lines_[name].set_color(c);\r
 260                 });\r
 261         }\r
 262         \r
 263         void guide(const std::string& name, float value)\r
 264         {\r
 265                 context::begin_invoke([=]\r
 266                 {\r
 267                         lines_[name].guide(diagnostics::guide(value));\r
 268                 });\r
 269         }\r
 270 \r
 271 private:\r
 272         void render(sf::RenderTarget& target)\r
 273         {\r
 274                 const size_t text_size = 15;\r
 275                 const size_t text_margin = 2;\r
 276                 const size_t text_offset = text_size+text_margin*2;\r
 277 \r
 278                 sf::String text(name_.c_str(), sf::Font::GetDefaultFont(), text_size);\r
 279                 text.SetStyle(sf::String::Italic);\r
 280                 text.Move(text_margin, text_margin);\r
 281                 \r
 282                 glPushMatrix();\r
 283                         glScaled(1.0f/GetScale().x, 1.0f/GetScale().y, 1.0f);\r
 284                         target.Draw(text);\r
 285                         float x_offset = text.GetPosition().x + text.GetRect().Right + text_margin*4;\r
 286                         for(auto it = lines_.begin(); it != lines_.end(); ++it)\r
 287                         {                                               \r
 288                                 sf::String line_text(it->first, sf::Font::GetDefaultFont(), text_size);\r
 289                                 line_text.SetPosition(x_offset, text_margin);\r
 290                                 auto c = it->second.get_color();\r
 291                                 line_text.SetColor(sf::Color(c.red*255.0f, c.green*255.0f, c.blue*255.0f, c.alpha*255.0f));\r
 292                                 target.Draw(line_text);\r
 293                                 x_offset = line_text.GetRect().Right + text_margin*2;\r
 294                         }\r
 295 \r
 296                         glDisable(GL_TEXTURE_2D);\r
 297                 glPopMatrix();\r
 298 \r
 299                 glBegin(GL_QUADS);\r
 300                         glColor4f(1.0f, 1.0f, 1.0f, 0.2f);      \r
 301                         glVertex2f(1.0f, 0.99f);\r
 302                         glVertex2f(0.0f, 0.99f);\r
 303                         glVertex2f(0.0f, 0.01f);        \r
 304                         glVertex2f(1.0f, 0.01f);        \r
 305                 glEnd();\r
 306 \r
 307                 glPushMatrix();\r
 308                         glTranslated(0.0f, text_offset/GetScale().y, 1.0f);\r
 309                         glScaled(1.0f, 1.0-text_offset/GetScale().y, 1.0f);\r
 310                 \r
 311                         target.Draw(diagnostics::guide(1.0f, color(1.0f, 1.0f, 1.0f, 0.6f)));\r
 312                         target.Draw(diagnostics::guide(0.0f, color(1.0f, 1.0f, 1.0f, 0.6f)));\r
 313 \r
 314                         for(auto it = lines_.begin(); it != lines_.end(); ++it)         \r
 315                                 target.Draw(it->second);\r
 316                 \r
 317                 glPopMatrix();\r
 318         }\r
 319 \r
 320         implementation(implementation&);\r
 321         implementation& operator=(implementation&);\r
 322 };\r
 323         \r
 324 graph::graph(const std::string& name) : impl_(new implementation(name))\r
 325 {\r
 326         context::register_drawable(impl_);\r
 327 }\r
 328 \r
 329 void graph::update(const std::string& name, float value){impl_->update(name, value);}\r
 330 void graph::tag(const std::string& name){impl_->tag(name);}\r
 331 void graph::guide(const std::string& name, float value){impl_->guide(name, value);}\r
 332 void graph::set_color(const std::string& name, color c){impl_->set_color(name, c);}\r
 333 \r
 334 safe_ptr<graph> create_graph(const std::string& name)\r
 335 {\r
 336         return safe_ptr<graph>(new graph(name));\r
 337 }\r
 338 \r
 339 }}