demos/desertpillars/source/desertpillars.cpp

   1 #include <msp/fs/dir.h>
   2 #include <msp/gl/directionallight.h>
   3 #include <msp/gl/lighting.h>
   4 #include <msp/gl/sequencebuilder.h>
   5 #include <msp/gl/pointlight.h>
   6 #include <msp/gl/renderer.h>
   7 #include <msp/gl/tests.h>
   8 #include <msp/input/keys.h>
   9 #include <msp/time/utils.h>
  10 #include "desertpillars.h"
  11
  12 using namespace std;
  13 using namespace Msp;
  14
  15 DesertPillars::Options::Options()
  16 {
  17         wnd_opts.width = 1920;
  18         wnd_opts.height = 1080;
  19         gl_opts.gl_version_major = Graphics::GLOptions::LATEST_VERSION;
  20         gl_opts.core_profile = true;
  21 }
  22
  23
  24 DesertPillars::DesertPillars(int, char **):
  25         window(display, opts.wnd_opts),
  26         gl_ctx(window, opts.gl_opts),
  27         keyboard(window),
  28         view(window, gl_ctx),
  29         camera(resources.get<GL::Camera>("Camera.camera")),
  30         lighting(resources.get<GL::Lighting>("Desert.lightn")),
  31         sphere(resources.get<GL::Object>("Sphere.object")),
  32         sphere_morph(0.0f),
  33         sphere_frozen(false),
  34         sphere_stopped(false),
  35         sun(resources.get<GL::DirectionalLight>("Sun.light")),
  36         sun_angle(Geometry::Angle<float>::from_turns(0.1f)),
  37         wisp(resources.get<GL::PointLight>("Wisp.light")),
  38         flare(resources.get<GL::Object>("Flare.object"), lighting.find_light_index(wisp)),
  39         camera_stopped(false)
  40 {
  41         window.set_title("Desert Pillars");
  42         window.signal_close.connect(sigc::bind(sigc::mem_fun(this, &DesertPillars::exit), 0));
  43         keyboard.signal_button_press.connect(sigc::bind_return(sigc::mem_fun(this, &DesertPillars::key_press), false));
  44
  45         env_seq = make_unique<GL::Sequence>();
  46         env_seq->set_clear_enabled(true);
  47         env_seq->set_debug_name("Environment sequence");
  48
  49         global_env = make_unique<GL::EnvironmentMap>(32, GL::RGB16F, 2, content, *env_seq);
  50         global_env->set_fixed_position(GL::Vector3(0.0f, 0.0f, 0.0f));
  51         global_env->set_debug_name("Global environment");
  52
  53         sky = make_unique<GL::Sky>(*global_env, sun);
  54         sky->set_debug_name("Sky");
  55
  56         shadow_seq = make_unique<GL::Sequence>();
  57         shadow_seq->set_clear_enabled(true);
  58         shadow_seq->set_debug_name("Shadow sequence");
  59         GL::Sequence::Step *step = &shadow_seq->add_step("shadow", content);
  60         step->set_depth_test(GL::LEQUAL);
  61
  62         shadow_seq_thsm = make_unique<GL::Sequence>();
  63         shadow_seq_thsm->set_clear_enabled(true);
  64         shadow_seq_thsm->set_debug_name("Shadow sequence");
  65         step = &shadow_seq_thsm->add_step("shadow_thsm", content);
  66         step->set_depth_test(GL::LEQUAL);
  67
  68         shadow_map = make_unique<GL::ShadowMap>(6144, 4096, *sky, lighting);
  69         shadow_map->set_debug_name("Shadow map");
  70         shadow_map->add_light(sun, 4096, *shadow_seq);
  71         shadow_map->add_light(resources.get<GL::PointLight>("Wisp.light"), 2048, *shadow_seq_thsm);
  72         shadow_map->set_target(GL::Vector3(0.0f, 0.0f, 0.0f), 20.0f);
  73
  74         GL::SequenceBuilder seq_bld(resources.get<GL::SequenceTemplate>("Desert.seq"));
  75         seq_bld.set_renderable("content", *shadow_map);
  76         seq_bld.set_debug_name("Main sequence");
  77         sequence.reset(seq_bld.build(view));
  78
  79         step = &env_seq->add_step("", *shadow_map);
  80         step->set_lighting(&lighting);
  81         step->set_depth_test(GL::LEQUAL);
  82
  83         env_map = make_unique<GL::EnvironmentMap>(256, GL::RGB16F, 7, sphere, *env_seq);
  84         env_map->set_debug_name("Environment map");
  85         sphere.set_matrix(GL::Matrix::translation(GL::Vector3(0.0f, 0.0f, 3.3f)));
  86
  87         content.add(resources.get<GL::Scene>("Background.scene"));
  88         content.add(*env_map);
  89         content.add(flare);
  90
  91         camera.set_debug_name("Main camera");
  92
  93         view.set_content(sequence.get());
  94         view.set_camera(&camera);
  95
  96         const GL::Vector3 &sun_direction = sun.get_direction();
  97         sun_node = normalize(GL::Vector3(sun_direction.y, -sun_direction.x, 0.0f));
  98         sun_axis = normalize(cross(sun_direction, sun_node));
  99
 100         wisp_base_color = wisp.get_color();
 101
 102         const GL::Vector3 &cam_pos = camera.get_position();
 103         camera_distance = cam_pos.norm();
 104         camera_angle = Geometry::atan2(cam_pos.y, cam_pos.x);
 105         camera_base_height = Geometry::atan2(cam_pos.z, cam_pos.slice<2>(0).norm());
 106 }
 107
 108 int DesertPillars::main()
 109 {
 110         window.show();
 111         return Application::main();
 112 }
 113
 114 void DesertPillars::tick()
 115 {
 116         Time::TimeStamp t = Time::now();
 117         Time::TimeDelta dt = (last_tick ? t-last_tick : Time::zero);
 118         last_tick = t;
 119
 120         if(!sphere_frozen)
 121         {
 122                 sphere_morph += dt/Time::sec;
 123                 sphere.set_morph(sphere_morph);
 124         }
 125
 126         if(!sphere_stopped)
 127         {
 128                 sphere_angle += Geometry::Angle<float>::from_degrees(36*dt/Time::sec);
 129                 sphere.set_matrix(GL::Matrix().translate(GL::Vector3(0.0f, 0.0f, 3.3f))
 130                         .rotate(sphere_angle, GL::Vector3(0.0f, 0.0f, 1.0f)).rotate(sphere_angle*0.5f, GL::Vector3(1.0f, 0.0f, 0.0f)));
 131         }
 132
 133         if(!camera_stopped)
 134         {
 135                 camera_angle += Geometry::Angle<float>::from_degrees(12*dt/Time::sec);
 136                 Geometry::Angle<float> cam_height = camera_base_height+Geometry::Angle<float>::from_degrees(15.0f*cos(camera_angle*1.5f));
 137                 GL::Vector3 cam_dir(cos(camera_angle)*cos(cam_height), sin(camera_angle)*cos(cam_height), sin(cam_height));
 138                 camera.set_position(GL::Vector3(0.0f, 0.0f, 2.0f)+cam_dir*camera_distance);
 139                 camera.set_look_direction(-cam_dir);
 140         }
 141
 142         sun_angle += Geometry::Angle<float>::from_degrees(4*dt/Time::sec);
 143         sun.set_direction(GL::Matrix::rotation(sun_angle, sun_axis)*-sun_node);
 144
 145         wisp_angle += Geometry::Angle<float>::from_degrees(6*dt/Time::sec);
 146         float r = 3.1f+1.1f*cos(4.0f*wisp_angle);
 147         GL::Vector3 p(cos(wisp_angle)*r, sin(wisp_angle)*r, 3.6f+0.4f*sin(1.6f*wisp_angle));
 148         wisp.set_position(p);
 149         float twilight = 0.8f-min(max(sin(sun_angle), -0.05f), 0.2f)*4.0f;
 150         wisp.set_color(wisp_base_color*((3.0f-2.0f*twilight)*twilight*twilight));
 151         flare.set_matrix(GL::Matrix::translation(p));
 152
 153         display.tick();
 154         view.render();
 155 }
 156
 157 void DesertPillars::key_press(unsigned key)
 158 {
 159         if(key==Input::KEY_ESC)
 160                 exit(0);
 161         else if(key==Input::KEY_SPACE)
 162                 camera_stopped = !camera_stopped;
 163         else if(key==Input::KEY_F)
 164                 sphere_frozen = !sphere_frozen;
 165         else if(key==Input::KEY_S)
 166                 sphere_stopped = !sphere_stopped;
 167 }
 168
 169
 170 DesertPillars::Resources::Resources()
 171 {
 172         FS::Path base_dir = FS::get_sys_data_dir()/"demos"/"desertpillars"/"data";
 173         source.add_directory(base_dir);
 174         source.add_directory(base_dir/"textures");
 175         source.add_directory(base_dir/"exported");
 176         add_source(source);
 177 }
 178
 179
 180 void DesertPillars::MorphSphere::set_morph(float m)
 181 {
 182         shdata.uniform("morph", m);
 183 }
 184
 185 void DesertPillars::MorphSphere::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 186 {
 187         ObjectInstance::setup_render(renderer, tag);
 188         renderer.add_shader_data(shdata);
 189 }
 190
 191
 192 DesertPillars::LightFlare::LightFlare(const GL::Object &o, unsigned i):
 193         ObjectInstance(o)
 194 {
 195         shdata.uniform("flare_light_index", static_cast<int>(i));
 196 }
 197
 198 void DesertPillars::LightFlare::setup_render(GL::Renderer &renderer, GL::Tag tag) const
 199 {
 200         ObjectInstance::setup_render(renderer, tag);
 201         renderer.add_shader_data(shdata);
 202 }