demos/desertpillars/source/desertpillars.cpp

   1 #include <msp/fs/dir.h>
   2 #include <msp/gl/directionallight.h>
   3 #include <msp/gl/sequencebuilder.h>
   4 #include <msp/gl/renderer.h>
   5 #include <msp/gl/tests.h>
   6 #include <msp/input/keys.h>
   7 #include <msp/time/utils.h>
   8 #include "desertpillars.h"
   9
  10 using namespace std;
  11 using namespace Msp;
  12
  13 DesertPillars::Options::Options()
  14 {
  15         wnd_opts.width = 1920;
  16         wnd_opts.height = 1080;
  17         gl_opts.gl_version_major = Graphics::GLOptions::LATEST_VERSION;
  18         gl_opts.core_profile = true;
  19 }
  20
  21
  22 DesertPillars::DesertPillars(int, char **):
  23         window(display, opts.wnd_opts),
  24         gl_ctx(window, opts.gl_opts),
  25         keyboard(window),
  26         view(window, gl_ctx),
  27         camera(resources.get<GL::Camera>("Camera.camera")),
  28         sphere(resources.get<GL::Object>("Sphere.object")),
  29         sphere_morph(0.0f),
  30         sphere_frozen(false),
  31         sphere_stopped(false),
  32         sun(resources.get<GL::DirectionalLight>("Sun.light")),
  33         sun_angle(Geometry::Angle<float>::from_turns(0.1f)),
  34         camera_stopped(false)
  35 {
  36         window.set_title("Desert Pillars");
  37         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &DesertPillars::exit), 0));
  38         keyboard.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &DesertPillars::key_press), false));
  39
  40         env_seq = make_unique<GL::Sequence>();
  41         env_seq->set_clear_enabled(true);
  42         env_seq->set_debug_name("Environment sequence");
  43
  44         global_env = make_unique<GL::EnvironmentMap>(32, GL::RGB16F, 2, content, *env_seq);
  45         global_env->set_fixed_position(GL::Vector3(0.0f, 0.0f, 0.0f));
  46         global_env->set_debug_name("Global environment");
  47
  48         sky = make_unique<GL::Sky>(*global_env, sun);
  49         sky->set_debug_name("Sky");
  50
  51         shadow_seq = make_unique<GL::Sequence>();
  52         shadow_seq->set_clear_enabled(true);
  53         shadow_seq->set_debug_name("Shadow sequence");
  54         GL::Sequence::Step *step = &shadow_seq->add_step("shadow", content);
  55         step->set_depth_test(GL::LEQUAL);
  56
  57         shadow_map = make_unique<GL::ShadowMap>(8192, *sky, sun, *shadow_seq);
  58         shadow_map->set_debug_name("Shadow map");
  59         shadow_map->set_target(GL::Vector3(0.0f, 0.0f, 0.0f), 20.0f);
  60
  61         GL::SequenceBuilder seq_bld(resources.get<GL::SequenceTemplate>("Desert.seq"));
  62         seq_bld.set_renderable("content", *shadow_map);
  63         seq_bld.set_debug_name("Main sequence");
  64         sequence.reset(seq_bld.build(view));
  65
  66         step = &env_seq->add_step("", *shadow_map);
  67         step->set_lighting(&resources.get<GL::Lighting>("Desert.lightn"));
  68         step->set_depth_test(GL::LEQUAL);
  69
  70         env_map = make_unique<GL::EnvironmentMap>(256, GL::RGB16F, 7, sphere, *env_seq);
  71         env_map->set_debug_name("Environment map");
  72         sphere.set_matrix(GL::Matrix::translation(GL::Vector3(0.0f, 0.0f, 3.3f)));
  73
  74         content.add(resources.get<GL::Scene>("Background.scene"));
  75         content.add(*env_map);
  76
  77         camera.set_debug_name("Main camera");
  78
  79         view.set_content(sequence.get());
  80         view.set_camera(&camera);
  81
  82         const GL::Vector3 &sun_direction = sun.get_direction();
  83         sun_node = normalize(GL::Vector3(sun_direction.y, -sun_direction.x, 0.0f));
  84         sun_axis = normalize(cross(sun_direction, sun_node));
  85
  86         const GL::Vector3 &cam_pos = camera.get_position();
  87         camera_distance = cam_pos.norm();
  88         camera_angle = Geometry::atan2(cam_pos.y, cam_pos.x);
  89         camera_base_height = Geometry::atan2(cam_pos.z, cam_pos.slice<2>(0).norm());
  90 }
  91
  92 int DesertPillars::main()
  93 {
  94         window.show();
  95         return Application::main();
  96 }
  97
  98 void DesertPillars::tick()
  99 {
 100         Time::TimeStamp t = Time::now();
 101         Time::TimeDelta dt = (last_tick ? t-last_tick : Time::zero);
 102         last_tick = t;
 103
 104         if(!sphere_frozen)
 105         {
 106                 sphere_morph += dt/Time::sec;
 107                 sphere.set_morph(sphere_morph);
 108         }
 109
 110         if(!sphere_stopped)
 111         {
 112                 sphere_angle += Geometry::Angle<float>::from_degrees(36*dt/Time::sec);
 113                 sphere.set_matrix(GL::Matrix().translate(GL::Vector3(0.0f, 0.0f, 3.3f))
 114                         .rotate(sphere_angle, GL::Vector3(0.0f, 0.0f, 1.0f)).rotate(sphere_angle*0.5f, GL::Vector3(1.0f, 0.0f, 0.0f)));
 115         }
 116
 117         if(!camera_stopped)
 118         {
 119                 camera_angle += Geometry::Angle<float>::from_degrees(12*dt/Time::sec);
 120                 Geometry::Angle<float> cam_height = camera_base_height+Geometry::Angle<float>::from_degrees(15.0f*cos(camera_angle*1.5f));
 121                 GL::Vector3 cam_dir(cos(camera_angle)*cos(cam_height), sin(camera_angle)*cos(cam_height), sin(cam_height));
 122                 camera.set_position(GL::Vector3(0.0f, 0.0f, 2.0f)+cam_dir*camera_distance);
 123                 camera.set_look_direction(-cam_dir);
 124         }
 125
 126         sun_angle += Geometry::Angle<float>::from_degrees(4*dt/Time::sec);
 127         sun.set_direction(GL::Matrix::rotation(sun_angle, sun_axis)*-sun_node);
 128
 129         display.tick();
 130         view.render();
 131 }
 132
 133 void DesertPillars::key_press(unsigned key)
 134 {
 135         if(key==Input::KEY_ESC)
 136                 exit(0);
 137         else if(key==Input::KEY_SPACE)
 138                 camera_stopped = !camera_stopped;
 139         else if(key==Input::KEY_F)
 140                 sphere_frozen = !sphere_frozen;
 141         else if(key==Input::KEY_S)
 142                 sphere_stopped = !sphere_stopped;
 143 }
 144
 145
 146 DesertPillars::Resources::Resources()
 147 {
 148         FS::Path base_dir = FS::get_sys_data_dir()/"demos"/"desertpillars"/"data";
 149         source.add_directory(base_dir);
 150         source.add_directory(base_dir/"textures");
 151         source.add_directory(base_dir/"exported");
 152         add_source(source);
 153 }
 154
 155
 156 void DesertPillars::MorphSphere::set_morph(float m)
 157 {
 158         shdata.uniform("morph", m);
 159 }
 160
 161 void DesertPillars::MorphSphere::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 162 {
 163         ObjectInstance::setup_render(renderer, tag);
 164         renderer.add_shader_data(shdata);
 165 }