generate.cc

   1
   2 ////////////////////////////////////////////////////////////////////
   3 // START_IP_HEADER                                                //
   4 //                                                                //
   5 // Written by Francois Fleuret                                    //
   6 // Contact <francois.fleuret@idiap.ch> for comments & bug reports //
   7 //                                                                //
   8 // END_IP_HEADER                                                  //
   9 ////////////////////////////////////////////////////////////////////
  10
  11 // for i in {0..49}; do u=$(printf %03d $i); mkdir $u && mv dyn_${u}* ${u}; done
  12
  13 #include <iostream>
  14 #include <fstream>
  15 #include <cmath>
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <stdint.h>
  19 #include <errno.h>
  20 #include <string.h>
  21 #include <sys/stat.h>
  22
  23 using namespace std;
  24
  25 #include "misc.h"
  26 #include "task.h"
  27 #include "simple_window.h"
  28 #include "universe.h"
  29 #include "plotter.h"
  30 #include "retina.h"
  31 #include "manipulator.h"
  32 #include "intelligence.h"
  33 #include "canvas_cairo.h"
  34
  35 void generate_png(Universe *universe, scalar_t scale, FILE *file) {
  36   CanvasCairo canvas(scale, universe->width(), universe->height());
  37   canvas.set_line_width(2.0);
  38   universe->draw(&canvas);
  39   canvas.write_png(file);
  40 }
  41
  42 int main(int argc, char **argv) {
  43   const scalar_t world_width = 400;
  44   const scalar_t world_height = 400;
  45   const scalar_t grab_start_x = world_width * 0.5;
  46   const scalar_t grab_start_y = world_height * 0.75;
  47   const int nb_blocks = 1;
  48   const scalar_t block_size = 80;
  49   const int nb_iterations = 250;
  50
  51   Universe *universe;
  52   Polygon *grabbed_polygon;
  53
  54   if(argc < 2 || argc > 3) {
  55     cerr << argv[0] << " <nb pairs to generate> [<dir> [<seed>]]" << endl;
  56     exit(1);
  57   }
  58
  59   int nb_pairs = atoi(argv[1]);
  60
  61   char dir[1024] = "/tmp/";
  62
  63   if(argc > 2) {
  64     strncpy(dir, argv[2], sizeof(dir) / sizeof(char) - 1);
  65   }
  66
  67   if(argc > 3) {
  68     srand48(atoi(argv[1]));
  69   }
  70
  71   universe = new Universe(10, world_width, world_height);
  72
  73   for(int n = 0; n < nb_pairs; n++) {
  74     if(n%1000 == 0) { cout << "Example #" << n+1 << endl; }
  75
  76     do {
  77       universe->clear();
  78
  79       const int nb_attempts_max = 100;
  80       int nb_attempts = 0;
  81
  82       for(int u = 0; u < nb_blocks; u++) {
  83         Polygon *pol = 0;
  84
  85         nb_attempts = 0;
  86
  87         do {
  88           scalar_t x[] = {
  89             - block_size * 0.5,
  90             + block_size * 0.5,
  91             + block_size * 0.5,
  92             - block_size * 0.5,
  93           };
  94
  95           scalar_t y[] = {
  96             - block_size * 0.5,
  97             - block_size * 0.5,
  98             + block_size * 0.5,
  99             + block_size * 0.5,
 100           };
 101
 102           scalar_t delta = block_size / sqrt(2.0);
 103           scalar_t object_center_x = delta + (world_width - 2 * delta) * drand48();
 104           scalar_t object_center_y = delta + (world_height - 2 * delta) * drand48();
 105           scalar_t red, green, blue;
 106           red = 1.00;
 107           green = red;
 108           blue = red;
 109           delete pol;
 110           pol = new Polygon(0.5,
 111                             red, green, blue,
 112                             x, y, sizeof(x)/sizeof(scalar_t));
 113           pol->set_position(object_center_x, object_center_y, M_PI * 2 * drand48());
 114           pol->set_speed(0, 0, 0);
 115           universe->initialize_polygon(pol);
 116           nb_attempts++;
 117         } while(nb_attempts < nb_attempts_max && universe->collide(pol));
 118
 119         if(nb_attempts == nb_attempts_max) {
 120           delete pol;
 121           u = 0;
 122           universe->clear();
 123           nb_attempts = 0;
 124         } else {
 125           universe->add_polygon(pol);
 126         }
 127       }
 128
 129       grabbed_polygon = universe->pick_polygon(grab_start_x, grab_start_y);
 130     } while(!grabbed_polygon);
 131
 132     const scalar_t scaling = 0.16;
 133
 134     CanvasCairo grab_trace(scaling, world_width, world_height);
 135
 136     {
 137       char buffer[1024];
 138       sprintf(buffer, "%s/%03d/", dir, n/1000);
 139       mkdir(buffer, 0777);
 140     }
 141
 142     {
 143       char buffer[1024];
 144       sprintf(buffer, "%s/%03d/dyn_%06d_world_0.png", dir, n/1000, n);
 145       FILE *file = fopen(buffer, "w");
 146       generate_png(universe, scaling, file);
 147       fclose(file);
 148     }
 149
 150     scalar_t grab_relative_x = grabbed_polygon->relative_x(grab_start_x, grab_start_y);
 151     scalar_t grab_relative_y = grabbed_polygon->relative_y(grab_start_x, grab_start_y);
 152     // scalar_t grab_previous_x = grab_start_x, grab_previous_y = grab_start_y;
 153
 154     {
 155       int n = 36;
 156       scalar_t xp[n], yp[n];
 157       for(int k = 0; k < n; k++) {
 158         scalar_t radius = 1/scaling;
 159         scalar_t alpha = 2 * M_PI * scalar_t(k) / scalar_t(n);
 160         xp[k] = grab_start_x + radius * cos(alpha);
 161         yp[k] = grab_start_y + radius * sin(alpha);
 162       }
 163       grab_trace.set_drawing_color(0.0, 0.0, 0.0);
 164       grab_trace.set_line_width(1.0);
 165       grab_trace.draw_polygon(1, n, xp, yp);
 166     }
 167
 168     scalar_t dt = 0.1;
 169     for(int i = 0; i < nb_iterations; i++) {
 170       scalar_t xf = grabbed_polygon->absolute_x(grab_relative_x, grab_relative_y);
 171       scalar_t yf = grabbed_polygon->absolute_y(grab_relative_x, grab_relative_y);
 172       grabbed_polygon->apply_force(dt, xf, yf, 0.0, -1.0);
 173       universe->update(dt);
 174
 175       /*
 176         {
 177         scalar_t xp[2], yp[2];
 178         xp[0] = grab_previous_x;
 179         yp[0] = grab_previous_y;
 180         xp[1] = xf;
 181         yp[1] = yf;
 182         grab_previous_x = xf;
 183         grab_previous_y = yf;
 184
 185         grab_trace.set_drawing_color(0.0, 0.0, 0.0);
 186         grab_trace.draw_polygon(1, 2, xp, yp);
 187         }
 188       */
 189     }
 190
 191     {
 192       char buffer[1024];
 193       sprintf(buffer, "%s/%03d/dyn_%06d_grab.png", dir, n/1000, n);
 194       FILE *file = fopen(buffer, "w");
 195       grab_trace.write_png(file);
 196       fclose(file);
 197     }
 198
 199     {
 200       char buffer[1024];
 201       sprintf(buffer, "%s/%03d/dyn_%06d_world_1.png", dir, n/1000, n);
 202       FILE *file = fopen(buffer, "w");
 203       generate_png(universe, scaling, file);
 204       fclose(file);
 205     }
 206   }
 207
 208   delete universe;
 209 }