From: Francois Fleuret Date: Fri, 31 Mar 2017 17:23:59 +0000 (+0200) Subject: Started to implement the gravity by making the pulling optional. X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=commitdiff_plain;h=4a824920ad843ba0d1bd3d9b10a8eb0188a2bc63;p=flatland.git Started to implement the gravity by making the pulling optional. --- diff --git a/flatland.c b/flatland.c index a77d7c1..df5075b 100644 --- a/flatland.c +++ b/flatland.c @@ -18,10 +18,11 @@ #include "sequence_generator.h" -THByteTensor *generate_sequence(long nb_sequences, +THByteTensor *generate_sequence(int pulling, + long nb_sequences, long nb_images, long image_height, long image_width, - int nb_shapes, + long nb_shapes, int random_shape_size, int random_colors) { long nb_channels = 3; @@ -49,6 +50,7 @@ THByteTensor *generate_sequence(long nb_sequences, a = THByteTensor_storage(result)->data + THByteTensor_storageOffset(result) + s * st0; fl_generate_sequence(nb_images, image_width, image_height, nb_shapes, random_shape_size, random_colors, + pulling, tmp_buffer); unsigned char *r = tmp_buffer; for(k = 0; k < nb_images; k++) { diff --git a/flatland.h b/flatland.h index ba91f67..cdde100 100644 --- a/flatland.h +++ b/flatland.h @@ -1,6 +1,7 @@ -THByteTensor *generate_sequence(long nb_sequences, +THByteTensor *generate_sequence(int pulling, + long nb_sequences, long nb_images, long image_height, long image_width, - int nb_shapes, + long nb_shapes, int random_shape_size, int random_colors); diff --git a/sequence_generator.cc b/sequence_generator.cc index ddc337b..bfba036 100644 --- a/sequence_generator.cc +++ b/sequence_generator.cc @@ -69,6 +69,7 @@ extern "C" void fl_generate_sequence(int nb_images, int width, int height, int nb_shapes, int random_shape_size, int random_colors, + int pulling, unsigned char *output) { const scalar_t super_definition = 8; @@ -115,12 +116,14 @@ extern "C" void fl_generate_sequence(int nb_images, const int max_total_nb_attempts = 1000000; do { - if(random_grasp) { - grab_start_x = world_width * (0.1 + 0.8 * drand48()); - grab_start_y = world_height * (0.1 + 0.8 * drand48()); - } else { - grab_start_x = world_width * 0.5; - grab_start_y = world_height * 0.75; + if(pulling) { + if(random_grasp) { + grab_start_x = world_width * (0.1 + 0.8 * drand48()); + grab_start_y = world_height * (0.1 + 0.8 * drand48()); + } else { + grab_start_x = world_width * 0.5; + grab_start_y = world_height * 0.75; + } } do { @@ -188,45 +191,41 @@ extern "C" void fl_generate_sequence(int nb_images, } } - grabbed_polygon = universe->pick_polygon(grab_start_x, grab_start_y); - - } while(!grabbed_polygon); + if(pulling) { + grabbed_polygon = universe->pick_polygon(grab_start_x, grab_start_y); + } + } while(pulling and !grabbed_polygon); failed = 0; - scalar_t grab_relative_x = grabbed_polygon->relative_x(grab_start_x, grab_start_y); - scalar_t grab_relative_y = grabbed_polygon->relative_y(grab_start_x, grab_start_y); + scalar_t grab_relative_x, grab_relative_y; + + if(pulling) { + grab_relative_x = grabbed_polygon->relative_x(grab_start_x, grab_start_y); + grab_relative_y = grabbed_polygon->relative_y(grab_start_x, grab_start_y); + } for(int s = 0; !failed && s < nb_simulated_frames; s++) { if(s % every_nth == 0) { int t = s / every_nth; - // scalar_t xf = grabbed_polygon->absolute_x(grab_relative_x, grab_relative_y); - // scalar_t yf = grabbed_polygon->absolute_y(grab_relative_x, grab_relative_y); - - // canvases[2 * t + 0]->clear(); - // draw_grabbing_point_on_canvas(canvases[2 * t + 0], scaling, - // xf, yf, 0.0, 0.0, 0.0); - // canvases[2 * t + 1]->clear(); - // draw_universe_on_canvas(canvases[2 * t + 1], scaling, universe); canvases[t]->clear(); draw_universe_on_canvas(canvases[t], scaling, universe); - - // if(show_grabbing_point) { - // draw_grabbing_point_on_canvas(canvases[2 * t + 1], scaling, - // xf, yf, 1.0, 0.0, 0.0); - // } } if(s < nb_simulated_frames - 1) { // Run the simulation for(int i = 0; i < nb_iterations_per_steps; i++) { - scalar_t xf = grabbed_polygon->absolute_x(grab_relative_x, grab_relative_y); - scalar_t yf = grabbed_polygon->absolute_y(grab_relative_x, grab_relative_y); - if (xf < 0 || xf >= world_width || yf < 0 || yf >= world_height) { - failed = 1; + if(pulling) { + scalar_t xf = grabbed_polygon->absolute_x(grab_relative_x, grab_relative_y); + scalar_t yf = grabbed_polygon->absolute_y(grab_relative_x, grab_relative_y); + if (xf < 0 || xf >= world_width || yf < 0 || yf >= world_height) { + failed = 1; + } + grabbed_polygon->apply_force(dt, xf, yf, 0.0, -1.0); + } else { + // Gravity } - grabbed_polygon->apply_force(dt, xf, yf, 0.0, -1.0); universe->update(dt, 1.0 / scaling); } } diff --git a/sequence_generator.h b/sequence_generator.h index 7bfc7ea..daaf36b 100644 --- a/sequence_generator.h +++ b/sequence_generator.h @@ -7,6 +7,7 @@ void fl_generate_sequence(int nb_images, int width, int height, int nb_shapes, int random_shape_size, int random_colors, + int pulling, unsigned char *output); #ifdef __cplusplus diff --git a/test.py b/test.py index ac3eb7e..e058269 100755 --- a/test.py +++ b/test.py @@ -9,8 +9,8 @@ from _ext import flatland ###################################################################### parser = argparse.ArgumentParser( - description='Dummy test of the flatland sequence generation.', - formatter_class=argparse.ArgumentDefaultsHelpFormatter + description = 'Dummy test of the flatland sequence generation.', + formatter_class = argparse.ArgumentDefaultsHelpFormatter ) parser.add_argument('--seed', @@ -84,7 +84,8 @@ def sequences_to_image(x, gap = 1, gap_color = (0, 128, 255)): ###################################################################### -x = flatland.generate_sequence(args.nb_sequences, +x = flatland.generate_sequence(False, + args.nb_sequences, args.nb_images_per_sequences, args.height, args.width, args.nb_shapes,