src/gui/profilergraph.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4 Copyright (C) 2018 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU Lesser General Public License as published by
   8 the Free Software Foundation; either version 2.1 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU Lesser General Public License for more details.
  15
  16 You should have received a copy of the GNU Lesser General Public License along
  17 with this program; if not, write to the Free Software Foundation, Inc.,
  18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 */
  20
  21 #include "profilergraph.h"
  22 #include "util/string.h"
  23
  24 void ProfilerGraph::put(const Profiler::GraphValues &values)
  25 {
  26         m_log.emplace_back(values);
  27
  28         while (m_log.size() > m_log_max_size)
  29                 m_log.erase(m_log.begin());
  30 }
  31
  32 void ProfilerGraph::draw(s32 x_left, s32 y_bottom, video::IVideoDriver *driver,
  33                 gui::IGUIFont *font) const
  34 {
  35         // Do *not* use UNORDERED_MAP here as the order needs
  36         // to be the same for each call to prevent flickering
  37         std::map<std::string, Meta> m_meta;
  38
  39         for (const Piece &piece : m_log) {
  40                 for (const auto &i : piece.values) {
  41                         const std::string &id = i.first;
  42                         const float &value = i.second;
  43                         std::map<std::string, Meta>::iterator j = m_meta.find(id);
  44
  45                         if (j == m_meta.end()) {
  46                                 m_meta[id] = Meta(value);
  47                                 continue;
  48                         }
  49
  50                         if (value < j->second.min)
  51                                 j->second.min = value;
  52
  53                         if (value > j->second.max)
  54                                 j->second.max = value;
  55                 }
  56         }
  57
  58         // Assign colors
  59         static const video::SColor usable_colors[] = {video::SColor(255, 255, 100, 100),
  60                         video::SColor(255, 90, 225, 90),
  61                         video::SColor(255, 100, 100, 255),
  62                         video::SColor(255, 255, 150, 50),
  63                         video::SColor(255, 220, 220, 100)};
  64         static const u32 usable_colors_count =
  65                         sizeof(usable_colors) / sizeof(*usable_colors);
  66         u32 next_color_i = 0;
  67
  68         for (auto &i : m_meta) {
  69                 Meta &meta = i.second;
  70                 video::SColor color(255, 200, 200, 200);
  71
  72                 if (next_color_i < usable_colors_count)
  73                         color = usable_colors[next_color_i++];
  74
  75                 meta.color = color;
  76         }
  77
  78         s32 graphh = 50;
  79         s32 textx = x_left + m_log_max_size + 15;
  80         s32 textx2 = textx + 200 - 15;
  81         s32 meta_i = 0;
  82
  83         for (const auto &p : m_meta) {
  84                 const std::string &id = p.first;
  85                 const Meta &meta = p.second;
  86                 s32 x = x_left;
  87                 s32 y = y_bottom - meta_i * 50;
  88                 float show_min = meta.min;
  89                 float show_max = meta.max;
  90
  91                 if (show_min >= -0.0001 && show_max >= -0.0001) {
  92                         if (show_min <= show_max * 0.5)
  93                                 show_min = 0;
  94                 }
  95
  96                 s32 texth = 15;
  97                 char buf[10];
  98                 snprintf(buf, 10, "%.3g", show_max);
  99                 font->draw(utf8_to_wide(buf).c_str(),
 100                                 core::rect<s32>(textx, y - graphh, textx2,
 101                                                 y - graphh + texth),
 102                                 meta.color);
 103                 snprintf(buf, 10, "%.3g", show_min);
 104                 font->draw(utf8_to_wide(buf).c_str(),
 105                                 core::rect<s32>(textx, y - texth, textx2, y), meta.color);
 106                 font->draw(utf8_to_wide(id).c_str(),
 107                                 core::rect<s32>(textx, y - graphh / 2 - texth / 2, textx2,
 108                                                 y - graphh / 2 + texth / 2),
 109                                 meta.color);
 110                 s32 graph1y = y;
 111                 s32 graph1h = graphh;
 112                 bool relativegraph = (show_min != 0 && show_min != show_max);
 113                 float lastscaledvalue = 0.0;
 114                 bool lastscaledvalue_exists = false;
 115
 116                 for (const Piece &piece : m_log) {
 117                         float value = 0;
 118                         bool value_exists = false;
 119                         Profiler::GraphValues::const_iterator k = piece.values.find(id);
 120
 121                         if (k != piece.values.end()) {
 122                                 value = k->second;
 123                                 value_exists = true;
 124                         }
 125
 126                         if (!value_exists) {
 127                                 x++;
 128                                 lastscaledvalue_exists = false;
 129                                 continue;
 130                         }
 131
 132                         float scaledvalue = 1.0;
 133
 134                         if (show_max != show_min)
 135                                 scaledvalue = (value - show_min) / (show_max - show_min);
 136
 137                         if (scaledvalue == 1.0 && value == 0) {
 138                                 x++;
 139                                 lastscaledvalue_exists = false;
 140                                 continue;
 141                         }
 142
 143                         if (relativegraph) {
 144                                 if (lastscaledvalue_exists) {
 145                                         s32 ivalue1 = lastscaledvalue * graph1h;
 146                                         s32 ivalue2 = scaledvalue * graph1h;
 147                                         driver->draw2DLine(
 148                                                         v2s32(x - 1, graph1y - ivalue1),
 149                                                         v2s32(x, graph1y - ivalue2),
 150                                                         meta.color);
 151                                 }
 152
 153                                 lastscaledvalue = scaledvalue;
 154                                 lastscaledvalue_exists = true;
 155                         } else {
 156                                 s32 ivalue = scaledvalue * graph1h;
 157                                 driver->draw2DLine(v2s32(x, graph1y),
 158                                                 v2s32(x, graph1y - ivalue), meta.color);
 159                         }
 160
 161                         x++;
 162                 }
 163
 164                 meta_i++;
 165         }
 166 }