int main(int argc, char** argv) {
gua::init(argc, argv);
//create simple untextured material shader
auto lod_keep_input_desc = std::make_shared<gua::MaterialShaderDescription>("./data/materials/PLOD_use_input_color.gmd");
auto lod_keep_color_shader(std::make_shared<gua::MaterialShader>("PLOD_pass_input_color", lod_keep_input_desc));
gua::MaterialShaderDatabase::instance()->add(lod_keep_color_shader);
//create material for pointcloud
auto lod_rough = lod_keep_color_shader->make_new_material();
lod_rough->set_uniform("metalness", 0.2f);
lod_rough->set_uniform("roughness", 0.4f);
lod_rough->set_uniform("emissivity", 0.8f);
//configure lod backend
gua::LodLoader lod_loader;
lod_loader.set_out_of_core_budget_in_mb(512);
lod_loader.set_render_budget_in_mb(512);
lod_loader.set_upload_budget_in_mb(20);
//load a sample pointcloud
auto plod_node = lod_loader.load_lod_pointcloud(
"pointcloud",
"/opt/3d_models/lamure/plod/pig_pr.bvh",
lod_rough,
gua::LodLoader::NORMALIZE_POSITION | gua::LodLoader::NORMALIZE_SCALE | gua::LodLoader::MAKE_PICKABLE);
//load a sample mesh-based lod model
auto mlod_node = lod_loader.load_lod_trimesh(
//"tri_mesh",
"/opt/3d_models/lamure/mlod/xyzrgb_dragon_7219k.bvh",
//plod_rough,
gua::LodLoader::NORMALIZE_POSITION | gua::LodLoader::NORMALIZE_SCALE/* | gua::LodLoader::MAKE_PICKABLE*/
);
mlod_node->set_error_threshold(0.25);
//setup scenegraph
gua::SceneGraph graph("main_scenegraph");
auto scene_transform = graph.add_node<gua::node::TransformNode>("/", "transform");
auto mlod_transform = graph.add_node<gua::node::TransformNode>("/transform", "mlod_transform");
auto plod_transform = graph.add_node<gua::node::TransformNode>("/transform", "plod_transform");
graph.add_node("/transform/mlod_transform", mlod_node);
graph.add_node("/transform/plod_transform", plod_node);
mlod_transform->translate(-0.4, 0.0, 0.0);
plod_transform->rotate(180.0, 0.0, 1.0, 0.0);
plod_transform->translate(0.3, 0.08, 0.0);
//create a lightsource
auto light_transform = graph.add_node<gua::node::TransformNode>("/transform", "light_transform");
auto light = graph.add_node<gua::node::LightNode>("/transform/light_transform", "light");
light->data.set_type(gua::node::LightNode::Type::POINT);
light->data.set_enable_shadows(false);
light->data.set_shadow_map_size(4096);
light->data.brightness = 5.0f;
light->translate(0.f, 0.2f, 0.f);
light->scale(4.f);
light->translate(0.f, 0.f, 1.f);
auto screen = graph.add_node<gua::node::ScreenNode>("/", "screen");
screen->data.set_size(gua::math::vec2(1.92f, 1.08f));
screen->translate(0, 0, 1.0);
//add mouse interaction
scm::gl::trackball_manipulator trackball;
trackball.transform_matrix()*scm::math::make_translation(0.01f, 0.002f, 0.2f);
trackball.dolly(0.2f);
float dolly_sens = 1.5f;
gua::math::vec2 trackball_init_pos(0.f);
gua::math::vec2 last_mouse_pos(0.f);
int button_state = -1;
//setup rendering pipeline and window
auto resolution = gua::math::vec2ui(1920, 1080);
auto camera = graph.add_node<gua::node::CameraNode>("/screen", "cam");
camera->translate(0.0f, 0, 2.5f);
camera->config.set_resolution(resolution);
//use close near plane to allow inspection of details
//camera->config.set_near_clip(0.01f);
//camera->config.set_far_clip(200.0f);
camera->config.set_screen_path("/screen");
camera->config.set_scene_graph_name("main_scenegraph");
camera->config.set_output_window_name("main_window");
camera->config.set_enable_stereo(true);
auto PLod_Pass = std::make_shared<gua::PLodPassDescription>();
auto pipe = std::make_shared<gua::PipelineDescription>();
pipe->add_pass(std::make_shared<gua::MLodPassDescription>());
pipe->add_pass(PLod_Pass);
pipe->add_pass(std::make_shared<gua::BBoxPassDescription>());
pipe->add_pass(std::make_shared<gua::LightVisibilityPassDescription>());
pipe->add_pass(std::make_shared<gua::ResolvePassDescription>());
pipe->add_pass(std::make_shared<gua::DebugViewPassDescription>());
camera->set_pipeline_description(pipe);
pipe->get_resolve_pass()->tone_mapping_exposure(1.f);
pipe->get_resolve_pass()->tone_mapping_method(gua::ResolvePassDescription::ToneMappingMethod::UNCHARTED);
pipe->get_resolve_pass()->background_mode(gua::ResolvePassDescription::BackgroundMode::SKYMAP_TEXTURE);
pipe->get_resolve_pass()->background_texture("data/textures/envlightmap.jpg");
//init window and window behaviour
auto window = std::make_shared<gua::GlfwWindow>();
gua::WindowDatabase::instance()->add("main_window", window);
window->config.set_enable_vsync(false);
window->config.set_size(resolution);
window->config.set_resolution(resolution);
window->config.set_stereo_mode(gua::StereoMode::MONO);
window->on_resize.connect([&](gua::math::vec2ui const& new_size) {
window->config.set_resolution(new_size);
camera->config.set_resolution(new_size);
screen->data.set_size(gua::math::vec2(0.001 * new_size.x, 0.001 * new_size.y));
});
//trackball controls
bool drag_mode = false;
window->on_move_cursor.connect([&](gua::math::vec2 const& pos) {
float nx = 2.f * float(pos.x - (resolution.x/2))/float(resolution.x);
float ny = -2.f * float(resolution.y - pos.y - (resolution.y/2))/float(resolution.y);
if (button_state != -1) {
if (drag_mode) {
auto ssize = screen->data.get_size();
gua::math::vec3 trans = gua::math::vec3(ssize.x *(nx - last_mouse_pos.x), ssize.y * (ny - last_mouse_pos.y), 0.f);
auto object_trans = scm::math::inverse(screen->get_world_transform()) * mlod_transform->get_world_transform();
mlod_transform->set_world_transform(screen->get_world_transform() * scm::math::make_translation(trans) * object_trans);
}
else {
if (button_state == 0) { // left
trackball.rotation(trackball_init_pos.x, trackball_init_pos.y, nx, ny);
}
if (button_state == 1) { // right
trackball.dolly(dolly_sens*0.5f * (ny - trackball_init_pos.y));
}
if (button_state == 2) { // middle
float f = dolly_sens < 1.0f ? 0.02f : 0.3f;
trackball.translation(f*(nx - trackball_init_pos.x), f*(ny - trackball_init_pos.y));
}
trackball_init_pos.x = nx;
trackball_init_pos.y = ny;
}
}
last_mouse_pos.x = nx;
last_mouse_pos.y = ny;
});
window->on_button_press.connect([&](int mousebutton, int action, int mods) {
if (action == 1) {
drag_mode = mods == 1;
trackball_init_pos = last_mouse_pos;
button_state = mousebutton;
} else
button_state = -1;
});
window->on_key_press.connect(std::bind([&](gua::PipelineDescription& pipe, gua::SceneGraph& graph, int key, int scancode, int action, int mods) {
if (action == 0) return;
switch (std::tolower(key)) {
case '1':
PLod_Pass->mode(gua::PLodPassDescription::SurfelRenderMode::HQ_TWO_PASS);
PLod_Pass->touch();
break;
case '2':
PLod_Pass->mode(gua::PLodPassDescription::SurfelRenderMode::HQ_LINKED_LIST);
PLod_Pass->touch();
break;
default:
break;
}
},
std::ref(*(camera->get_pipeline_description())),
std::ref(graph),
std::placeholders::_1,
std::placeholders::_2,
std::placeholders::_3,
std::placeholders::_4));
window->open();
gua::Renderer renderer;
//application loop
gua::events::MainLoop loop;
gua::events::Ticker ticker(loop, 1.0 / 500.0);
ticker.on_tick.connect([&]() {
screen->set_transform(scm::math::inverse(gua::math::mat4(trackball.transform_matrix())));
light->rotate(0.1, 0.f, 1.f, 0.f);
window->process_events();
if (window->should_close()) {
renderer.stop();
window->close();
loop.stop();
}
else {
renderer.queue_draw({ &graph });
std::cout << "FPS: " << window->get_rendering_fps() << " Frametime: " << 1000.f / window->get_rendering_fps() << std::endl;
}
});
loop.start();
return 0;
}
int main(int argc, char** argv) {
// initialize guacamole
gua::init(argc, argv);
// setup scene
gua::SceneGraph graph("main_scenegraph");
gua::TriMeshLoader loader;
auto teapot_mat(gua::MaterialShaderDatabase::instance()
->lookup("gua_default_material")
->make_new_material());
teapot_mat->set_render_wireframe(false);
teapot_mat->set_show_back_faces(false);
auto transform = graph.add_node<gua::node::TransformNode>("/", "transform");
auto teapot(loader.create_geometry_from_file(
"teapot", "data/objects/teapot.obj",
teapot_mat,
gua::TriMeshLoader::NORMALIZE_POSITION |
gua::TriMeshLoader::NORMALIZE_SCALE) );
graph.add_node("/transform", teapot);
teapot->set_draw_bounding_box(true);
auto portal = graph.add_node<gua::node::TexturedQuadNode>("/", "portal");
portal->data.set_size(gua::math::vec2(1.2f, 0.8f));
portal->data.set_texture("portal");
portal->translate(0.5f, 0.f, -0.2f);
portal->rotate(-30, 0.f, 1.f, 0.f);
auto light2 = graph.add_node<gua::node::LightNode>("/", "light2");
light2->data.set_type(gua::node::LightNode::Type::POINT);
light2->data.brightness = 150.0f;
light2->scale(12.f);
light2->translate(-3.f, 5.f, 5.f);
auto screen = graph.add_node<gua::node::ScreenNode>("/", "screen");
screen->data.set_size(gua::math::vec2(1.92f, 1.08f));
screen->translate(0, 0, 1.0);
auto portal_screen =
graph.add_node<gua::node::ScreenNode>("/", "portal_screen");
portal_screen->translate(0.0, 0.0, 5.0);
portal_screen->rotate(90, 0.0, 1.0, 0.0);
portal_screen->data.set_size(gua::math::vec2(1.2f, 0.8f));
// add mouse interaction
gua::utils::Trackball trackball(0.01, 0.002, 0.2);
// setup rendering pipeline and window
auto resolution = gua::math::vec2ui(1920, 1080);
auto portal_camera =
graph.add_node<gua::node::CameraNode>("/portal_screen", "portal_cam");
portal_camera->translate(0, 0, 2.0);
portal_camera->config.set_resolution(gua::math::vec2ui(1200, 800));
portal_camera->config.set_screen_path("/portal_screen");
portal_camera->config.set_scene_graph_name("main_scenegraph");
portal_camera->config.set_output_texture_name("portal");
portal_camera->config.set_enable_stereo(false);
auto portal_pipe = std::make_shared<gua::PipelineDescription>();
portal_pipe->add_pass(std::make_shared<gua::TriMeshPassDescription>());
portal_pipe->add_pass(
std::make_shared<gua::LightVisibilityPassDescription>());
auto resolve_pass = std::make_shared<gua::ResolvePassDescription>();
resolve_pass->background_mode(
gua::ResolvePassDescription::BackgroundMode::QUAD_TEXTURE);
resolve_pass->tone_mapping_exposure(1.0f);
portal_pipe->add_pass(resolve_pass);
portal_pipe->add_pass(std::make_shared<gua::DebugViewPassDescription>());
portal_camera->set_pipeline_description(portal_pipe);
auto camera = graph.add_node<gua::node::CameraNode>("/screen", "cam");
camera->translate(0, 0, 2.0);
camera->config.set_resolution(resolution);
camera->config.set_screen_path("/screen");
camera->config.set_scene_graph_name("main_scenegraph");
camera->config.set_output_window_name("main_window");
camera->config.set_enable_stereo(false);
camera->set_pre_render_cameras({portal_camera});
camera->get_pipeline_description()->get_resolve_pass()->tone_mapping_exposure(
1.0f);
camera->get_pipeline_description()->add_pass(
std::make_shared<gua::DebugViewPassDescription>());
auto window = std::make_shared<gua::GlfwWindow>();
gua::WindowDatabase::instance()->add("main_window", window);
window->config.set_enable_vsync(false);
window->config.set_size(resolution);
window->config.set_resolution(resolution);
window->config.set_stereo_mode(gua::StereoMode::MONO);
window->on_resize.connect([&](gua::math::vec2ui const& new_size) {
window->config.set_resolution(new_size);
camera->config.set_resolution(new_size);
screen->data.set_size(
gua::math::vec2(0.001 * new_size.x, 0.001 * new_size.y));
});
window->on_move_cursor.connect(
[&](gua::math::vec2 const& pos) { trackball.motion(pos.x, pos.y); });
window->on_button_press.connect(
std::bind(mouse_button, std::ref(trackball), std::placeholders::_1,
std::placeholders::_2, std::placeholders::_3));
gua::Renderer renderer;
// application loop
gua::events::MainLoop loop;
gua::events::Ticker ticker(loop, 1.0 / 500.0);
ticker.on_tick.connect([&]() {
// apply trackball matrix to object
gua::math::mat4 modelmatrix =
scm::math::make_translation(trackball.shiftx(), trackball.shifty(),
trackball.distance()) *
gua::math::mat4(trackball.rotation());
transform->set_transform(modelmatrix);
if (window->should_close()) {
renderer.stop();
window->close();
loop.stop();
} else {
renderer.queue_draw({&graph});
}
});
loop.start();
return 0;
}
int main(int argc, char** argv) {
// initialize guacamole
gua::init(argc, argv);
// setup scene
gua::SceneGraph graph("main_scenegraph");
gua::TriMeshLoader loader;
auto transform = graph.add_node<gua::node::TransformNode>("/", "transform");
auto cube(loader.create_geometry_from_file(
"cube", "data/objects/cube.obj",
gua::TriMeshLoader::NORMALIZE_POSITION |
gua::TriMeshLoader::NORMALIZE_SCALE |
gua::TriMeshLoader::MAKE_PICKABLE) );
graph.add_node("/transform", cube);
scm::math::vec3d cube_translation(0.0, 0.0, -3.0);
cube->set_draw_bounding_box(true);
auto ray_geometry(loader.create_geometry_from_file(
"ray_geometry", "data/objects/cylinder.obj",
gua::TriMeshLoader::NORMALIZE_POSITION |
gua::TriMeshLoader::NORMALIZE_SCALE) );
graph.add_node("/", ray_geometry);
ray_geometry->scale(0.02, 0.02, 0.1);
auto light2 = graph.add_node<gua::node::LightNode>("/", "light2");
light2->data.set_type(gua::node::LightNode::Type::POINT);
light2->data.brightness = 150.0f;
light2->scale(12.f);
light2->translate(-3.f, 5.f, 5.f);
auto screen = graph.add_node<gua::node::ScreenNode>("/", "screen");
screen->data.set_size(gua::math::vec2(1.92f, 1.08f));
screen->translate(0, 0, 1.0);
// add mouse interaction
gua::utils::Trackball trackball(0.01, 0.002, 0.2);
// setup rendering pipeline and window
auto resolution = gua::math::vec2ui(1920, 1080);
auto camera = graph.add_node<gua::node::CameraNode>("/screen", "cam");
camera->translate(0, 0, 2.0);
camera->config.set_resolution(resolution);
camera->config.set_screen_path("/screen");
camera->config.set_scene_graph_name("main_scenegraph");
camera->config.set_output_window_name("Picking Example");
camera->config.set_enable_stereo(false);
camera->get_pipeline_description()->get_resolve_pass()->tone_mapping_exposure(
1.0f);
camera->get_pipeline_description()->add_pass(
std::make_shared<gua::DebugViewPassDescription>());
auto window = std::make_shared<gua::GlfwWindow>();
gua::WindowDatabase::instance()->add("Picking Example", window);
window->config.set_enable_vsync(false);
window->config.set_size(resolution);
window->config.set_resolution(resolution);
window->config.set_stereo_mode(gua::StereoMode::MONO);
window->on_resize.connect([&](gua::math::vec2ui const& new_size) {
window->config.set_resolution(new_size);
camera->config.set_resolution(new_size);
screen->data.set_size(
gua::math::vec2(0.001 * new_size.x, 0.001 * new_size.y));
});
window->on_move_cursor.connect(
[&](gua::math::vec2 const& pos) { trackball.motion(pos.x, pos.y); });
window->on_button_press.connect(
std::bind(mouse_button, std::ref(trackball), std::placeholders::_1,
std::placeholders::_2, std::placeholders::_3));
gua::Renderer renderer;
// application loop
gua::events::MainLoop loop;
gua::events::Ticker ticker(loop, 1.0 / 500.0);
scm::math::vec3d camera_positon(0.0, 0.0, 2.0);
scm::math::vec3d negative_z_viewing_direction(0.0, 0.0, -100.0);
scm::math::vec3d::value_type t_max(200.0);
//create ray that is located in the origin of the current screen and looks along the negative z-axis (pick ray is seen as circle)
gua::Ray ray_from_camera_position(camera_positon, negative_z_viewing_direction, t_max);
size_t frame_count = 0;
ticker.on_tick.connect([&]() {
// apply trackball matrix to object
gua::math::mat4 modelmatrix =
scm::math::make_translation(cube_translation[0], cube_translation[1], cube_translation[2]) *
scm::math::make_translation(trackball.shiftx(), trackball.shifty(),
trackball.distance()) *
gua::math::mat4(trackball.rotation());
transform->set_transform(modelmatrix);
if (window->should_close()) {
renderer.stop();
window->close();
loop.stop();
} else {
//std::set<gua::PickResult> pick_results;
//cube->ray_test_impl(ray_from_camera_position, gua::PickResult::Options::PICK_ONLY_FIRST_FACE, gua::Mask(), pick_results);
auto pick_results = graph.ray_test(ray_from_camera_position, gua::PickResult::Options::PICK_ONLY_FIRST_FACE | gua::PickResult::Options::GET_WORLD_POSITIONS);
if(0 == (++frame_count) % 100) {
if(pick_results.size()) {
//print first picked face world position result
std::cout << "World space intersection position: " << pick_results.begin()->world_position << "\n";
}
}
renderer.queue_draw({&graph});
}
});
loop.start();
return 0;
}
int main(int argc, char** argv)
{
// initialize guacamole
gua::init(argc, argv);
// setup scene
gua::SceneGraph graph("main_scenegraph");
gua::TriMeshLoader loader;
auto add_mesh = [&](int x, int y, int z) {
auto t = graph.add_node<gua::node::TransformNode>("/", "mesh_" + std::to_string(x) + "_" + std::to_string(y));
t->scale(0.5);
t->translate((x - COUNT * 0.5 + 0.5) / 2, (y - COUNT * 0.5 + 0.5) / 2, (z - COUNT * 0.5 + 0.5) / 2);
auto mesh(loader.create_geometry_from_file("teapot", "data/objects/teapot.obj", gua::TriMeshLoader::NORMALIZE_POSITION | gua::TriMeshLoader::NORMALIZE_SCALE));
t->add_child(mesh);
};
for(int x(0); x < COUNT; ++x)
{
for(int y(0); y < COUNT; ++y)
{
for(int z(0); z < COUNT; ++z)
{
add_mesh(x, y, z);
}
}
}
auto resolution = gua::math::vec2ui(1920, 1080);
auto light = graph.add_node<gua::node::LightNode>("/", "light");
light->data.set_type(gua::node::LightNode::Type::POINT);
light->scale(4.4f);
light->translate(1.f, 0.f, 2.f);
auto screen = graph.add_node<gua::node::ScreenNode>("/", "screen");
screen->data.set_size(gua::math::vec2(0.001 * resolution.x, 0.001 * resolution.y));
screen->translate(0, 0, 1.0);
auto camera = graph.add_node<gua::node::CameraNode>("/screen", "cam");
camera->translate(0, 0, 2.0);
camera->config.set_resolution(resolution);
camera->config.set_screen_path("/screen");
camera->config.set_scene_graph_name("main_scenegraph");
camera->config.set_output_window_name("main_window");
camera->get_pipeline_description()->get_resolve_pass()->tone_mapping_exposure(0.8f);
auto plane_transform = graph.add_node<gua::node::TransformNode>("/", "plane_transform");
auto add_clipping_plane = [&](gua::math::vec3 const& pos, gua::math::vec4 const& rot) {
auto clipping_plane = graph.add_node<gua::node::ClippingPlaneNode>("/plane_transform", "clipping_plane");
clipping_plane->rotate(rot.x, rot.y, rot.z, rot.w);
clipping_plane->translate(pos);
auto plane(loader.create_geometry_from_file("plane", "data/objects/plane.obj", gua::TriMeshLoader::NORMALIZE_POSITION | gua::TriMeshLoader::NORMALIZE_SCALE));
plane->rotate(-90, 1, 0, 0);
// clipping_plane->add_child(plane);
};
add_clipping_plane(gua::math::vec3(0, 0, -0.5), gua::math::vec4(180, 1, 0, 0));
add_clipping_plane(gua::math::vec3(0, 0, 0.5), gua::math::vec4(0, 0, 0, 0));
add_clipping_plane(gua::math::vec3(0, 0.5, 0), gua::math::vec4(-90, 1, 0, 0));
add_clipping_plane(gua::math::vec3(0, -0.5, 0), gua::math::vec4(90, 1, 0, 0));
add_clipping_plane(gua::math::vec3(-0.5, 0, 0), gua::math::vec4(-90, 0, 1, 0));
add_clipping_plane(gua::math::vec3(0.5, 0, 0), gua::math::vec4(90, 0, 1, 0));
// auto clipping_plane_2 = graph.add_node<gua::node::ClippingPlaneNode>("/plane_transform", "clipping_plane_2");
// clipping_plane_2->rotate(90, 1, 0, 0);
// clipping_plane_2->translate(0, 0.5, 0);
// add mouse interaction
gua::utils::Trackball trackball(0.01, 0.002, 0.2);
auto window = std::make_shared<gua::GlfwWindow>();
gua::WindowDatabase::instance()->add("main_window", window);
window->config.set_enable_vsync(true);
window->config.set_size(resolution);
window->config.set_resolution(resolution);
window->on_resize.connect([&](gua::math::vec2ui const& new_size) {
window->config.set_resolution(new_size);
camera->config.set_resolution(new_size);
screen->data.set_size(gua::math::vec2(0.001 * new_size.x, 0.001 * new_size.y));
});
window->on_move_cursor.connect([&](gua::math::vec2 const& pos) { trackball.motion(pos.x, pos.y); });
window->on_button_press.connect(std::bind(mouse_button, std::ref(trackball), std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
window->open();
gua::Renderer renderer;
// application loop
gua::events::MainLoop loop;
gua::events::Ticker ticker(loop, 1.0 / 500.0);
ticker.on_tick.connect([&]() {
// apply trackball matrix to object
gua::math::mat4 modelmatrix = scm::math::make_translation(gua::math::float_t(trackball.shiftx()), gua::math::float_t(trackball.shifty()), gua::math::float_t(trackball.distance())) *
gua::math::mat4(trackball.rotation());
plane_transform->set_transform(modelmatrix);
window->process_events();
if(window->should_close())
{
renderer.stop();
window->close();
loop.stop();
}
else
{
renderer.queue_draw({&graph});
}
});
loop.start();
return 0;
}
int main(int argc, char** argv) {
// initialize guacamole
gua::init(argc, argv);
auto load_mat = [](std::string const& file){
gua::MaterialShaderDescription desc;
desc.load_from_file(file);
auto shader(std::make_shared<gua::MaterialShader>(file, std::make_shared<gua::MaterialShaderDescription>(desc)));
gua::MaterialShaderDatabase::instance()->add(shader);
return shader->make_new_material();
};
// setup scene
gua::SceneGraph graph("main_scenegraph");
gua::TriMeshLoader loader;
auto transform = graph.add_node<gua::node::TransformNode>("/", "transform");
// load material and create monkey geometry
auto projective_material(load_mat("data/materials/Projective_Texture_Material.gmd"));
projective_material->set_uniform("projective_texture", std::string("data/textures/smiley.jpg"));
auto monkey(loader.create_geometry_from_file("monkey", "data/objects/monkey.obj", projective_material, gua::TriMeshLoader::NORMALIZE_POSITION | gua::TriMeshLoader::NORMALIZE_SCALE));
monkey->scale(3);
monkey->translate(0.0, 0.0, -1.0);
graph.add_node("/transform", monkey);
auto light2 = graph.add_node<gua::node::LightNode>("/", "light2");
light2->data.set_type(gua::node::LightNode::Type::POINT);
light2->data.brightness = 150.0f;
light2->scale(12.f);
light2->translate(-3.f, 5.f, 5.f);
auto screen = graph.add_node<gua::node::ScreenNode>("/", "screen");
screen->data.set_size(gua::math::vec2(1.92f, 1.08f));
screen->translate(0, 0, 1.0);
// add mouse interaction
gua::utils::Trackball trackball(0.01, 0.002, 0.2);
// setup rendering pipeline and window
auto resolution = gua::math::vec2ui(1920, 1080);
auto camera = graph.add_node<gua::node::CameraNode>("/screen", "cam");
camera->translate(0, 0, 2.0);
camera->config.set_resolution(resolution);
camera->config.set_screen_path("/screen");
camera->config.set_scene_graph_name("main_scenegraph");
camera->config.set_output_window_name("main_window");
camera->config.set_enable_stereo(false);
camera->get_pipeline_description()->add_pass(std::make_shared<gua::DebugViewPassDescription>());
// projector transform node, screen and transform node
auto projector_transform = graph.add_node<gua::node::TransformNode>("/", "projector_transform");
projector_transform->translate(0.7, 0.0, 0.7);
projector_transform->rotate(45.0, 0.0, 1.0, 0.0);
graph.add_node("/", projector_transform);
auto projector_screen = graph.add_node<gua::node::ScreenNode>("/projector_transform", "projector_screen");
projector_screen->data.set_size(gua::math::vec2(0.5f, 0.5f));
projector_screen->translate(0.0, 0.0, -1.0);
graph.add_node("/projector_transform", projector_screen);
auto projector_geometry(loader.create_geometry_from_file("projector_geometry", "data/objects/projector.obj", gua::TriMeshLoader::NORMALIZE_POSITION | gua::TriMeshLoader::LOAD_MATERIALS));
projector_geometry->scale(0.1);
graph.add_node("/projector_transform", projector_geometry);
auto window = std::make_shared<gua::GlfwWindow>();
gua::WindowDatabase::instance()->add("main_window", window);
window->config.set_enable_vsync(false);
window->config.set_size(resolution);
window->config.set_resolution(resolution);
window->config.set_stereo_mode(gua::StereoMode::MONO);
window->on_resize.connect([&](gua::math::vec2ui const& new_size) {
window->config.set_resolution(new_size);
camera->config.set_resolution(new_size);
screen->data.set_size(gua::math::vec2(0.001 * new_size.x, 0.001 * new_size.y));
});
window->on_move_cursor.connect([&](gua::math::vec2 const& pos) {
trackball.motion(pos.x, pos.y);
});
window->on_button_press.connect(std::bind(mouse_button, std::ref(trackball), std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
window->open();
gua::Renderer renderer;
// application loop
gua::events::MainLoop loop;
gua::events::Ticker ticker(loop, 1.0/500.0);
ticker.on_tick.connect([&]() {
// apply trackball matrix to object
gua::math::mat4 modelmatrix = scm::math::make_translation(gua::math::float_t(trackball.shiftx()),
gua::math::float_t(trackball.shifty()),
gua::math::float_t(trackball.distance())) * gua::math::mat4(trackball.rotation());
projector_transform->set_transform(modelmatrix);
// use the guacamole frustum to calculate a view mat and projection mat for the projection
auto projection_frustum = gua::Frustum::perspective(projector_transform->get_world_transform(),
projector_screen->get_scaled_world_transform(),
0.1f, 1000.0f);
auto projection_mat = projection_frustum.get_projection();
auto view_mat = projection_frustum.get_view();
// set these matrices as uniforms for the projection material
projective_material->set_uniform("projective_texture_matrix", gua::math::mat4f(projection_mat * view_mat));
projective_material->set_uniform("view_texture_matrix", gua::math::mat4f(view_mat));
window->process_events();
if (window->should_close()) {
renderer.stop();
window->close();
loop.stop();
} else {
renderer.queue_draw({&graph});
}
});
loop.start();
return 0;
}