src/main.h

   1 #include "common.h"
   2
   3 #include "document.h"
   4 #include "view.h"
   5 #include "screen.h"
   6 #include <unistd.h>
   7
   8
   9 using namespace std;
  10 using namespace IPDF;
  11
  12 inline void OverlayBMP(Document & doc, const char * input, const char * output, const Rect & bounds = Rect(0,0,1,1), const Colour & c = Colour(0.f,0.f,0.f,1.f))
  13 {
  14
  15         Screen scr;
  16         View view(doc, scr, bounds, c);
  17         if (input != NULL)
  18                 scr.RenderBMP(input);
  19         view.Render();
  20         if (output != NULL)
  21                 scr.ScreenShot(output);
  22         scr.Present();
  23 }
  24
  25 // It is the only way.
  26 // Dear god what have I done
  27 void RatCatcher(int x, int y, int buttons, int wheel, Screen * scr, View * view)
  28 {
  29         static bool oldButtonDown = false;
  30         static int oldx, oldy;
  31         if (buttons == 3 && !oldButtonDown)
  32         {
  33                 oldButtonDown = true;
  34                 view->ToggleGPUTransform();
  35                 oldx = x;
  36                 oldy = y;
  37                 return;
  38         }
  39         if (buttons == 2 && !oldButtonDown)
  40         {
  41                 oldButtonDown = true;
  42                 view->ToggleGPURendering();
  43                 oldx = x;
  44                 oldy = y;
  45         }
  46         if (buttons && !oldButtonDown)
  47         {
  48                 // We're beginning a drag.
  49                 oldButtonDown = true;
  50                 oldx = x;
  51                 oldy = y;
  52                 scr->SetMouseCursor(Screen::CursorMove);
  53         }
  54         if (buttons)
  55         {
  56                 #if REALTYPE == REAL_RATIONAL
  57                         view->Translate(Real(oldx, scr->ViewportWidth()) -Real(x,scr->ViewportWidth()), Real(oldy, scr->ViewportHeight()) - Real(y,scr->ViewportHeight()));
  58                 #else
  59                         view->Translate(Real(oldx-x)/Real(scr->ViewportWidth()), Real(oldy-y)/Real(scr->ViewportHeight()));
  60                 #endif
  61         }
  62         else
  63         {
  64                 oldButtonDown = false;
  65                 scr->SetMouseCursor(Screen::CursorArrow);
  66         }
  67         oldx = x;
  68         oldy = y;
  69
  70         if (wheel)
  71         {
  72                 #if REALTYPE == REAL_RATIONAL
  73                         view->ScaleAroundPoint(Real(x,scr->ViewportWidth()), Real(y,scr->ViewportHeight()), Real(20-wheel, 20));
  74                 #else
  75                         view->ScaleAroundPoint(Real(x)/Real(scr->ViewportWidth()),Real(y)/Real(scr->ViewportHeight()), Real(expf(-wheel/20.f)));
  76                 #endif
  77
  78         }
  79 }
  80
  81
  82 inline void MainLoop(Document & doc, Screen & scr, View & view)
  83 {
  84         // order is important... segfaults occur when screen (which inits GL) is not constructed first -_-
  85
  86         scr.DebugFontInit("fonts/DejaVuSansMono.ttf");
  87         scr.SetMouseHandler(RatCatcher);
  88
  89         double total_cpu_time = 0;
  90         double total_gpu_time = 0;
  91         double total_real_time = 0;
  92         struct timespec real_clock_start;
  93         struct timespec real_clock_now;
  94         struct timespec real_clock_prev;
  95         clock_gettime(CLOCK_MONOTONIC_RAW, &real_clock_start);
  96         real_clock_now = real_clock_start;
  97         double frames = 0;
  98         double data_rate = 0; // period between data output to stdout (if <= 0 there will be no output)
  99         uint64_t data_points = 0;
 100         setbuf(stdout, NULL);
 101         while (scr.PumpEvents())
 102         {
 103                 real_clock_prev = real_clock_now;
 104                 ++frames;
 105                 scr.Clear();
 106                 //view.ForceBoundsDirty();
 107                 //view.ForceBufferDirty();
 108                 //view.ForceRenderDirty();
 109
 110                 view.Render(scr.ViewportWidth(), scr.ViewportHeight());
 111
 112                 double cpu_frame = scr.GetLastFrameTimeCPU();
 113                 double gpu_frame = scr.GetLastFrameTimeGPU();
 114                 clock_gettime(CLOCK_MONOTONIC_RAW, &real_clock_now);
 115                 double real_frame = (real_clock_now.tv_sec - real_clock_prev.tv_sec) + 1e-9*(real_clock_now.tv_nsec - real_clock_prev.tv_nsec);
 116
 117
 118                 total_real_time += real_frame; total_cpu_time += cpu_frame; total_gpu_time += gpu_frame;
 119                 if (data_rate > 0 && total_real_time > data_rate*(data_points+1))
 120                 {
 121                         printf("%lu\t%f\t%f\t%f\t%f\t%f\t%f\n", (long unsigned int)frames, total_real_time, total_cpu_time, total_gpu_time, real_frame, cpu_frame, gpu_frame);
 122                         data_points++;
 123                 }
 124                 scr.DebugFontPrintF("Rendered frame %lu\n", (uint64_t)frames);
 125                 scr.DebugFontPrintF("[CPU] Render took %lf ms (%lf FPS) (total %lf s, avg FPS %lf)\n", cpu_frame*1e3, 1.0/cpu_frame, total_cpu_time,frames/total_cpu_time);
 126                 scr.DebugFontPrintF("[GPU] Render took %lf ms (%lf FPS) (total %lf s, avg FPS %lf)\n", gpu_frame*1e3, 1.0/gpu_frame, total_gpu_time, frames/total_gpu_time);
 127                 scr.DebugFontPrintF("[REALTIME] Render+Present+Cruft took %lf ms (%lf FPS) (total %lf s, avg FPS %lf)\n", real_frame*1e3, 1.0/real_frame, total_real_time,frames/total_real_time);
 128                 scr.DebugFontPrintF("View bounds: %s\n", view.GetBounds().Str().c_str());
 129                 scr.DebugFontPrintF("type of Real == %s\n", g_real_name[REALTYPE]);
 130                 #if REALTYPE == REAL_MPFRCPP
 131                         scr.DebugFontPrintf("Precision: %s\nRounding: %s\n");
 132                 #endif
 133
 134                 if (view.UsingGPUTransform())
 135                 {
 136                         scr.DebugFontPrint("Doing coordinate transform on the GPU.\n");
 137                 }
 138                 else
 139                 {
 140                         scr.DebugFontPrint("Doing coordinate transform on the CPU.\n");
 141                 }
 142                 if (view.UsingGPURendering())
 143                 {
 144                         scr.DebugFontPrint("Doing rendering using GPU.\n");
 145                 }
 146                 else
 147                 {
 148                         scr.DebugFontPrint("Doing rendering using CPU.\n");
 149                 }
 150                 scr.Present();
 151         }
 152 }