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ladybird/Userland/Applications/3DFileViewer/main.cpp

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/*
* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/ElapsedTimer.h>
#include <LibCore/File.h>
#include <LibCore/System.h>
#include <LibFileSystemAccessClient/Client.h>
#include <LibGL/GL/gl.h>
#include <LibGL/GLContext.h>
#include <LibGUI/ActionGroup.h>
#include <LibGUI/Application.h>
#include <LibGUI/FilePicker.h>
#include <LibGUI/Icon.h>
#include <LibGUI/Label.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Menubar.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Widget.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Palette.h>
#include <LibMain/Main.h>
#include "Mesh.h"
#include "WavefrontOBJLoader.h"
class GLContextWidget final : public GUI::Frame {
C_OBJECT(GLContextWidget);
public:
bool load_path(String const& fname);
bool load_file(Core::File& file);
void toggle_rotate_x() { m_rotate_x = !m_rotate_x; }
void toggle_rotate_y() { m_rotate_y = !m_rotate_y; }
void toggle_rotate_z() { m_rotate_z = !m_rotate_z; }
void set_rotation_speed(float speed) { m_rotation_speed = speed; }
void set_stat_label(RefPtr<GUI::Label> l) { m_stats = l; };
void set_wrap_s_mode(GLint mode) { m_wrap_s_mode = mode; }
void set_wrap_t_mode(GLint mode) { m_wrap_t_mode = mode; }
void set_texture_scale(float scale) { m_texture_scale = scale; }
void set_texture_enabled(bool texture_enabled) { m_texture_enabled = texture_enabled; }
void set_mag_filter(GLint filter) { m_mag_filter = filter; }
void toggle_show_frame_rate()
{
m_show_frame_rate = !m_show_frame_rate;
m_stats->set_visible(m_show_frame_rate);
}
private:
GLContextWidget()
: m_mesh_loader(adopt_own(*new WavefrontOBJLoader()))
{
constexpr u16 RENDER_WIDTH = 640;
constexpr u16 RENDER_HEIGHT = 480;
m_bitmap = Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, { RENDER_WIDTH, RENDER_HEIGHT }).release_value_but_fixme_should_propagate_errors();
m_context = GL::create_context(*m_bitmap);
start_timer(20);
GL::make_context_current(m_context);
glFrontFace(GL_CCW);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
// Enable lighting
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_LIGHT2);
// Set projection matrix
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
auto const half_aspect_ratio = static_cast<double>(RENDER_WIDTH) / RENDER_HEIGHT / 2;
glFrustum(-half_aspect_ratio, half_aspect_ratio, -0.5, 0.5, 1, 1500);
m_init_list = glGenLists(1);
glNewList(m_init_list, GL_COMPILE);
{
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClearDepth(1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
glEndList();
}
virtual void drop_event(GUI::DropEvent&) override;
virtual void paint_event(GUI::PaintEvent&) override;
virtual void resize_event(GUI::ResizeEvent&) override;
virtual void timer_event(Core::TimerEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void mousewheel_event(GUI::MouseEvent&) override;
virtual void keydown_event(GUI::KeyEvent&) override;
private:
RefPtr<Mesh> m_mesh;
RefPtr<Gfx::Bitmap> m_bitmap;
OwnPtr<GL::GLContext> m_context;
NonnullOwnPtr<WavefrontOBJLoader> m_mesh_loader;
GLuint m_init_list { 0 };
bool m_rotate_x = true;
bool m_rotate_y = false;
bool m_rotate_z = true;
float m_angle_x = 0.0;
float m_angle_y = 0.0;
float m_angle_z = 0.0;
Gfx::IntPoint m_last_mouse;
float m_rotation_speed = 60.f;
bool m_show_frame_rate = false;
int m_cycles = 0;
int m_accumulated_time = 0;
RefPtr<GUI::Label> m_stats;
GLint m_wrap_s_mode = GL_REPEAT;
GLint m_wrap_t_mode = GL_REPEAT;
bool m_texture_enabled { true };
float m_texture_scale = 1.0f;
GLint m_mag_filter = GL_NEAREST;
float m_zoom = 1;
};
void GLContextWidget::drop_event(GUI::DropEvent& event)
{
if (!event.mime_data().has_urls())
return;
event.accept();
if (event.mime_data().urls().is_empty())
return;
for (auto& url : event.mime_data().urls()) {
if (url.protocol() != "file")
continue;
auto response = FileSystemAccessClient::Client::the().try_request_file(window(), url.path(), Core::OpenMode::ReadOnly);
if (response.is_error())
return;
load_file(response.value());
}
}
void GLContextWidget::paint_event(GUI::PaintEvent& event)
{
GUI::Frame::paint_event(event);
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.draw_scaled_bitmap(frame_inner_rect(), *m_bitmap, m_bitmap->rect());
}
void GLContextWidget::resize_event(GUI::ResizeEvent& event)
{
GUI::Frame::resize_event(event);
if (m_stats)
m_stats->set_x(width() - m_stats->width() - 6);
};
void GLContextWidget::mousemove_event(GUI::MouseEvent& event)
{
if (event.buttons() == GUI::MouseButton::Primary) {
int delta_x = m_last_mouse.x() - event.x();
int delta_y = m_last_mouse.y() - event.y();
m_angle_x -= delta_y / 2.0f;
m_angle_y -= delta_x / 2.0f;
}
m_last_mouse = event.position();
}
void GLContextWidget::mousewheel_event(GUI::MouseEvent& event)
{
if (event.wheel_delta_y() > 0)
m_zoom /= 1.1f;
else
m_zoom *= 1.1f;
}
void GLContextWidget::keydown_event(GUI::KeyEvent& event)
{
if (event.key() == Key_Escape && window()->is_fullscreen()) {
window()->set_fullscreen(false);
return;
}
}
void GLContextWidget::timer_event(Core::TimerEvent&)
{
auto timer = Core::ElapsedTimer::start_new();
static unsigned int light_counter = 0;
glCallList(m_init_list);
if (m_rotate_x)
m_angle_x -= m_rotation_speed * 0.01f;
if (m_rotate_y)
m_angle_y -= m_rotation_speed * 0.01f;
if (m_rotate_z)
m_angle_z -= m_rotation_speed * 0.01f;
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0, 0, -8.5);
glRotatef(m_angle_x, 1, 0, 0);
glRotatef(m_angle_y, 0, 1, 0);
glRotatef(m_angle_z, 0, 0, 1);
glPushMatrix();
glLoadIdentity();
// Disco time ;)
GLfloat const light0_position[4] = { -4.0f, 0.0f, 0.0f, 0.0f };
GLfloat const light0_diffuse[4] = { 1.0f, 0.0f, 0.0f, 0.0f };
GLfloat const light0_specular[4] = { 0.75f, 0.75f, 0.75f };
GLfloat const light1_position[4] = { 4.0f, 0.0f, 0.0f, 0.0f };
GLfloat const light1_diffuse[4] = { 0.0f, 1.0f, 0.0f, 0.0f };
GLfloat const light1_specular[4] = { 0.75f, 0.75f, 0.75f };
GLfloat const light2_position[4] = { 0.0f, 5.0f, 0.0f, 0.0f };
GLfloat const light2_diffuse[4] = { 0.0f, 0.0f, 1.0f, 0.0f };
GLfloat const light2_specular[4] = { 0.75f, 0.75f, 0.75f };
glLightfv(GL_LIGHT0, GL_POSITION, &light0_position[0]);
glLightfv(GL_LIGHT0, GL_DIFFUSE, &light0_diffuse[0]);
glLightfv(GL_LIGHT0, GL_SPECULAR, &light0_specular[0]);
glLightfv(GL_LIGHT1, GL_POSITION, &light1_position[0]);
glLightfv(GL_LIGHT1, GL_DIFFUSE, &light1_diffuse[0]);
glLightfv(GL_LIGHT1, GL_SPECULAR, &light1_specular[0]);
glLightfv(GL_LIGHT2, GL_POSITION, &light2_position[0]);
glLightfv(GL_LIGHT2, GL_DIFFUSE, &light2_diffuse[0]);
glLightfv(GL_LIGHT2, GL_SPECULAR, &light2_specular[0]);
GLfloat const material_specular_color[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
glMaterialf(GL_FRONT, GL_SHININESS, 45.0f);
glMaterialfv(GL_FRONT, GL_SPECULAR, &material_specular_color[0]);
glPopMatrix();
if (m_texture_enabled) {
glEnable(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, m_wrap_s_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, m_wrap_t_mode);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, m_mag_filter);
} else {
glDisable(GL_TEXTURE_2D);
}
glScalef(m_zoom, m_zoom, m_zoom);
if (!m_mesh.is_null())
m_mesh->draw(m_texture_scale);
m_context->present();
if ((m_cycles % 30) == 0) {
auto render_time = m_accumulated_time / 30.0;
auto frame_rate = render_time > 0 ? 1000 / render_time : 0;
m_stats->set_text(String::formatted("{:.0f} fps, {:.1f} ms", frame_rate, render_time));
m_accumulated_time = 0;
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_LIGHT2);
light_counter++;
if ((light_counter % 3) == 0)
glDisable(GL_LIGHT0);
else if ((light_counter % 3) == 1)
glDisable(GL_LIGHT1);
else
glDisable(GL_LIGHT2);
}
update();
m_accumulated_time += timer.elapsed();
m_cycles++;
}
bool GLContextWidget::load_path(String const& filename)
{
auto file = Core::File::construct(filename);
if (!file->open(Core::OpenMode::ReadOnly) && file->error() != ENOENT) {
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: {}", filename, strerror(errno)), "Error"sv, GUI::MessageBox::Type::Error);
return false;
}
return load_file(file);
}
bool GLContextWidget::load_file(Core::File& file)
{
auto const& filename = file.filename();
if (!filename.ends_with(".obj"sv)) {
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: invalid file type", filename), "Error"sv, GUI::MessageBox::Type::Error);
return false;
}
if (file.is_device()) {
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: Can't open device files", filename), "Error"sv, GUI::MessageBox::Type::Error);
return false;
}
if (file.is_directory()) {
GUI::MessageBox::show(window(), String::formatted("Opening \"{}\" failed: Can't open directories", filename), "Error"sv, GUI::MessageBox::Type::Error);
return false;
}
auto new_mesh = m_mesh_loader->load(file);
if (new_mesh.is_null()) {
GUI::MessageBox::show(window(), String::formatted("Reading \"{}\" failed.", filename), "Error"sv, GUI::MessageBox::Type::Error);
return false;
}
// Determine whether or not a texture for this model resides within the same directory
StringBuilder builder;
builder.append(filename.split('.').at(0));
builder.append(".bmp"sv);
String texture_path = Core::File::absolute_path(builder.string_view());
// Attempt to open the texture file from disk
RefPtr<Gfx::Bitmap> texture_image;
if (Core::File::exists(texture_path)) {
auto bitmap_or_error = Gfx::Bitmap::try_load_from_file(texture_path);
if (!bitmap_or_error.is_error())
texture_image = bitmap_or_error.release_value_but_fixme_should_propagate_errors();
} else {
auto response = FileSystemAccessClient::Client::the().try_request_file(window(), builder.string_view(), Core::OpenMode::ReadOnly);
if (!response.is_error()) {
auto texture_file = response.value();
auto bitmap_or_error = Gfx::Bitmap::try_load_from_fd_and_close(texture_file->leak_fd(), texture_file->filename());
if (!bitmap_or_error.is_error())
texture_image = bitmap_or_error.release_value_but_fixme_should_propagate_errors();
}
}
GLuint tex;
glGenTextures(1, &tex);
if (texture_image) {
// Upload texture data to the GL
glBindTexture(GL_TEXTURE_2D, tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, texture_image->width(), texture_image->height(), 0, GL_BGRA, GL_UNSIGNED_BYTE, texture_image->scanline(0));
} else {
dbgln("3DFileViewer: Couldn't load texture for {}", filename);
}
m_mesh = new_mesh;
dbgln("3DFileViewer: mesh has {} triangles.", m_mesh->triangle_count());
return true;
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
auto app = TRY(GUI::Application::try_create(arguments));
TRY(Core::System::pledge("stdio thread recvfd sendfd rpath unix prot_exec"));
TRY(Core::System::unveil("/tmp/user/%uid/portal/filesystemaccess", "rw"));
TRY(Core::System::unveil("/home/anon/Documents/3D Models", "r"));
TRY(Core::System::unveil("/res", "r"));
TRY(Core::System::unveil("/usr/lib", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
// Construct the main window
auto window = GUI::Window::construct();
auto app_icon = GUI::Icon::default_icon("app-3d-file-viewer"sv);
window->set_icon(app_icon.bitmap_for_size(16));
window->set_title("3D File Viewer");
window->resize(640 + 4, 480 + 4);
window->set_resizable(false);
window->set_double_buffering_enabled(true);
auto widget = TRY(window->try_set_main_widget<GLContextWidget>());
auto& time = widget->add<GUI::Label>();
time.set_visible(false);
time.set_foreground_role(ColorRole::HoverHighlight);
time.set_relative_rect({ 0, 8, 100, 10 });
time.set_text_alignment(Gfx::TextAlignment::CenterRight);
time.set_x(widget->width() - time.width() - 6);
widget->set_stat_label(time);
auto& file_menu = window->add_menu("&File");
file_menu.add_action(GUI::CommonActions::make_open_action([&](auto&) {
auto response = FileSystemAccessClient::Client::the().try_open_file(window);
if (response.is_error())
return;
auto file = response.value();
if (widget->load_file(*file)) {
auto canonical_path = Core::File::absolute_path(file->filename());
window->set_title(String::formatted("{} - 3D File Viewer", canonical_path));
}
}));
file_menu.add_separator();
file_menu.add_action(GUI::CommonActions::make_quit_action([&](auto&) {
app->quit();
}));
auto& view_menu = window->add_menu("&View");
view_menu.add_action(GUI::CommonActions::make_fullscreen_action([&](auto&) {
window->set_fullscreen(!window->is_fullscreen());
}));
auto& rotation_axis_menu = view_menu.add_submenu("Rotation &Axis");
auto rotation_x_action = GUI::Action::create_checkable("&X", [&widget](auto&) {
widget->toggle_rotate_x();
});
auto rotation_y_action = GUI::Action::create_checkable("&Y", [&widget](auto&) {
widget->toggle_rotate_y();
});
auto rotation_z_action = GUI::Action::create_checkable("&Z", [&widget](auto&) {
widget->toggle_rotate_z();
});
rotation_axis_menu.add_action(*rotation_x_action);
rotation_axis_menu.add_action(*rotation_y_action);
rotation_axis_menu.add_action(*rotation_z_action);
rotation_x_action->set_checked(true);
rotation_z_action->set_checked(true);
auto& rotation_speed_menu = view_menu.add_submenu("Rotation &Speed");
GUI::ActionGroup rotation_speed_actions;
rotation_speed_actions.set_exclusive(true);
auto no_rotation_action = GUI::Action::create_checkable("N&o Rotation", [&widget](auto&) {
widget->set_rotation_speed(0.f);
});
auto slow_rotation_action = GUI::Action::create_checkable("&Slow", [&widget](auto&) {
widget->set_rotation_speed(30.f);
});
auto normal_rotation_action = GUI::Action::create_checkable("&Normal", [&widget](auto&) {
widget->set_rotation_speed(60.f);
});
auto fast_rotation_action = GUI::Action::create_checkable("&Fast", [&widget](auto&) {
widget->set_rotation_speed(90.f);
});
rotation_speed_actions.add_action(*no_rotation_action);
rotation_speed_actions.add_action(*slow_rotation_action);
rotation_speed_actions.add_action(*normal_rotation_action);
rotation_speed_actions.add_action(*fast_rotation_action);
rotation_speed_menu.add_action(*no_rotation_action);
rotation_speed_menu.add_action(*slow_rotation_action);
rotation_speed_menu.add_action(*normal_rotation_action);
rotation_speed_menu.add_action(*fast_rotation_action);
normal_rotation_action->set_checked(true);
auto show_frame_rate_action = GUI::Action::create_checkable("Show Frame &Rate", [&widget](auto&) {
widget->toggle_show_frame_rate();
});
view_menu.add_action(*show_frame_rate_action);
auto& texture_menu = window->add_menu("&Texture");
auto texture_enabled_action = GUI::Action::create_checkable("&Enable Texture", [&widget](auto& action) {
widget->set_texture_enabled(action.is_checked());
});
texture_enabled_action->set_checked(true);
texture_menu.add_action(texture_enabled_action);
auto& wrap_u_menu = texture_menu.add_submenu("Wrap &S");
GUI::ActionGroup wrap_s_actions;
wrap_s_actions.set_exclusive(true);
auto wrap_u_repeat_action = GUI::Action::create_checkable("&Repeat", [&widget](auto&) {
widget->set_wrap_s_mode(GL_REPEAT);
});
auto wrap_u_mirrored_repeat_action = GUI::Action::create_checkable("&Mirrored Repeat", [&widget](auto&) {
widget->set_wrap_s_mode(GL_MIRRORED_REPEAT);
});
auto wrap_u_clamp_action = GUI::Action::create_checkable("&Clamp", [&widget](auto&) {
widget->set_wrap_s_mode(GL_CLAMP);
});
wrap_s_actions.add_action(*wrap_u_repeat_action);
wrap_s_actions.add_action(*wrap_u_mirrored_repeat_action);
wrap_s_actions.add_action(*wrap_u_clamp_action);
wrap_u_menu.add_action(*wrap_u_repeat_action);
wrap_u_menu.add_action(*wrap_u_mirrored_repeat_action);
wrap_u_menu.add_action(*wrap_u_clamp_action);
wrap_u_repeat_action->set_checked(true);
auto& wrap_t_menu = texture_menu.add_submenu("Wrap &T");
GUI::ActionGroup wrap_t_actions;
wrap_t_actions.set_exclusive(true);
auto wrap_t_repeat_action = GUI::Action::create_checkable("&Repeat", [&widget](auto&) {
widget->set_wrap_t_mode(GL_REPEAT);
});
auto wrap_t_mirrored_repeat_action = GUI::Action::create_checkable("&Mirrored Repeat", [&widget](auto&) {
widget->set_wrap_t_mode(GL_MIRRORED_REPEAT);
});
auto wrap_t_clamp_action = GUI::Action::create_checkable("&Clamp", [&widget](auto&) {
widget->set_wrap_t_mode(GL_CLAMP);
});
wrap_t_actions.add_action(*wrap_t_repeat_action);
wrap_t_actions.add_action(*wrap_t_mirrored_repeat_action);
wrap_t_actions.add_action(*wrap_t_clamp_action);
wrap_t_menu.add_action(*wrap_t_repeat_action);
wrap_t_menu.add_action(*wrap_t_mirrored_repeat_action);
wrap_t_menu.add_action(*wrap_t_clamp_action);
wrap_t_repeat_action->set_checked(true);
auto& texture_scale_menu = texture_menu.add_submenu("S&cale");
GUI::ActionGroup texture_scale_actions;
texture_scale_actions.set_exclusive(true);
auto texture_scale_025_action = GUI::Action::create_checkable("0.25x", [&widget](auto&) {
widget->set_texture_scale(0.25f);
});
auto texture_scale_05_action = GUI::Action::create_checkable("0.5x", [&widget](auto&) {
widget->set_texture_scale(0.5f);
});
auto texture_scale_1_action = GUI::Action::create_checkable("1x", [&widget](auto&) {
widget->set_texture_scale(1);
});
auto texture_scale_2_action = GUI::Action::create_checkable("2x", [&widget](auto&) {
widget->set_texture_scale(2);
});
auto texture_scale_4_action = GUI::Action::create_checkable("4x", [&widget](auto&) {
widget->set_texture_scale(4);
});
texture_scale_actions.add_action(*texture_scale_025_action);
texture_scale_actions.add_action(*texture_scale_05_action);
texture_scale_actions.add_action(*texture_scale_1_action);
texture_scale_actions.add_action(*texture_scale_2_action);
texture_scale_actions.add_action(*texture_scale_4_action);
texture_scale_menu.add_action(*texture_scale_025_action);
texture_scale_menu.add_action(*texture_scale_05_action);
texture_scale_menu.add_action(*texture_scale_1_action);
texture_scale_menu.add_action(*texture_scale_2_action);
texture_scale_menu.add_action(*texture_scale_4_action);
texture_scale_1_action->set_checked(true);
auto& texture_mag_filter_menu = texture_menu.add_submenu("Mag Filter");
GUI::ActionGroup texture_mag_filter_actions;
texture_mag_filter_actions.set_exclusive(true);
auto texture_mag_filter_nearest_action = GUI::Action::create_checkable("&Nearest", [&widget](auto&) {
widget->set_mag_filter(GL_NEAREST);
});
auto texture_mag_filter_linear_action = GUI::Action::create_checkable("&Linear", [&widget](auto&) {
widget->set_mag_filter(GL_LINEAR);
});
texture_mag_filter_actions.add_action(*texture_mag_filter_nearest_action);
texture_mag_filter_actions.add_action(*texture_mag_filter_linear_action);
texture_mag_filter_menu.add_action(*texture_mag_filter_nearest_action);
texture_mag_filter_menu.add_action(*texture_mag_filter_linear_action);
texture_mag_filter_nearest_action->set_checked(true);
auto& help_menu = window->add_menu("&Help");
help_menu.add_action(GUI::CommonActions::make_about_action("3D File Viewer", app_icon, window));
window->show();
auto filename = arguments.argc > 1 ? arguments.argv[1] : "/home/anon/Documents/3D Models/teapot.obj";
if (widget->load_path(filename)) {
auto canonical_path = Core::File::absolute_path(filename);
window->set_title(String::formatted("{} - 3D File Viewer", canonical_path));
}
return app->exec();
}
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