source: trunk/tests/md2_test/md2_test.cc @ 229

#include <nv/common.hh>
#include <iomanip>
#include <nv/gfx/keyframed_mesh.hh>
#include <nv/interface/vertex_buffer.hh>
#include <nv/gl/gl_device.hh>
#include <nv/gfx/image.hh>
#include <nv/interface/context.hh>
#include <nv/interface/window.hh>
#include <nv/interface/program.hh>
#include <nv/interface/texture2d.hh>
#include <nv/interface/mesh_loader.hh>
#include <nv/io/c_file_system.hh>
#include <nv/formats/md2_loader.hh>
#include <nv/profiler.hh>
#include <nv/logging.hh>
#include <nv/logger.hh>
#include <nv/math.hh>
#include <nv/time.hh>
#include <nv/string.hh>
#include <nv/interface/mesh.hh>
#include <glm/gtx/rotate_vector.hpp>
#include <glm/gtc/matrix_access.hpp>
#include <glm/gtx/matrix_interpolation.hpp>

class mesh_part
{
public:
        mesh_part( const std::string& path, nv::program* program, nv::window* window )
        {
                NV_PROFILE("mesh_construct");
                nv::md2_loader* loader;
                {
                        NV_PROFILE("loader->load");
                        nv::c_file_system fs;
                        nv::stream* mesh_file = fs.open( path.c_str() );
                        loader = new nv::md2_loader();
                        loader->load( *mesh_file );
                        m_mesh_data = loader->release_mesh_data();
                        delete mesh_file;
                        delete loader;
                }

                {
                        NV_PROFILE("create_mesh");
                        m_mesh      = new nv::keyframed_mesh_gpu( window->get_context(), m_mesh_data, program );
                }

        }

        void setup_animation( nv::uint32 start, nv::uint32 stop, nv::uint32 fps, bool loop )
        {
                m_mesh->setup_animation( start, stop, fps, loop );
        }

        void update( nv::uint32 ms )
        {
                m_mesh->update( ms );
        }

        size_t get_max_frames()
        {
                return m_mesh->get_max_frames();
        }

        void draw( nv::render_state& rstate, const glm::mat4& m, const glm::mat4& v, const glm::mat4& p )
        {
                NV_PROFILE( "mesh-draw" );
                glm::mat4 mv = v * m;
                m_mesh->get_program()->set_opt_uniform( "nv_m_modelview", mv );
                m_mesh->get_program()->set_opt_uniform( "nv_m_normal", glm::transpose(glm::inverse(glm::mat3(mv))) );
                m_mesh->get_program()->set_uniform( "matrix_mvp", p * mv );
                m_mesh->draw( rstate );
        }

        ~mesh_part()
        {
                delete m_mesh_data;
                delete m_mesh;
        }

private:
        nv::mesh_data*           m_mesh_data;
        nv::keyframed_mesh_gpu*  m_mesh;
};

class application
{
public:
        application();
        bool initialize();
        bool run();
        ~application();
protected:
        nv::device*       m_device;
        nv::window*       m_window;
        nv::texture2d*    m_diffuse;
        nv::clear_state   m_clear_state;
        nv::render_state  m_render_state;

        mesh_part*   m_mesh;
        nv::program* m_program;
};

application::application()
{
        NV_PROFILE( "app_construct" );
        m_device = new nv::gl_device();
        m_window = m_device->create_window( 800, 600 );

        nv::sampler sampler( nv::sampler::LINEAR, nv::sampler::REPEAT );
        nv::image_data* data = m_device->create_image_data( "data/manc.png" );
        m_diffuse  = m_device->create_texture2d( data->get_size(), nv::RGB, nv::UBYTE, sampler, (void*)data->get_data() );
        delete data;

        m_clear_state.buffers = nv::clear_state::COLOR_AND_DEPTH_BUFFER;
        m_render_state.depth_test.enabled = true;
        m_render_state.culling.enabled    = true;
        m_render_state.blending.enabled   = false;
        m_render_state.blending.src_rgb_factor   = nv::blending::SRC_ALPHA;
        m_render_state.blending.dst_rgb_factor   = nv::blending::ONE_MINUS_SRC_ALPHA;
        m_render_state.blending.src_alpha_factor = nv::blending::SRC_ALPHA;
        m_render_state.blending.dst_alpha_factor = nv::blending::ONE_MINUS_SRC_ALPHA;
}

bool application::initialize()
{
        NV_PROFILE( "app_initialize" );
        m_program = m_device->create_program( nv::slurp( "obj.vert" ), nv::slurp( "obj.frag" ) );
        m_mesh    = new mesh_part( "data/manc.md2", m_program, m_window );
        return true;
}

bool application::run()
{
        nv::profiler::pointer()->log_report(); 
        NV_PROFILE( "app_run" );
        int keypress = 0;

        glm::vec3 move( 0, 25.f, 0 );

        nv::uint32 ticks   = m_device->get_ticks();
        nv::uint32 last_ticks;
        nv::fps_counter_class< nv::system_us_timer > fps_counter;

        m_mesh->setup_animation( 0, m_mesh->get_max_frames(), 2, true );

        while(!keypress) 
        {
                last_ticks = ticks;
                ticks      = m_device->get_ticks();
                nv::uint32 elapsed = ticks - last_ticks;
                m_mesh->update( elapsed );
                {
                        NV_PROFILE( "clear" );
                        m_window->get_context()->clear( m_clear_state );
                }

                glm::mat4 view;
                glm::mat4 projection;
                {
                        NV_PROFILE( "update_sh" );

                        glm::vec3 source( 100.0f, 0.0f, 0.0f );
                        glm::vec3 eye = glm::rotate( source, (ticks / 20.f), glm::vec3( 0.0,1.0,0.0 ) );

                        view       = glm::lookAt(eye + move, glm::vec3(0.0f, 0.0f, 0.0f) + move, glm::vec3(0.0, 1.0, 0.0));
                        projection = glm::perspective(60.0f, 1.0f*800.0f/600.0f, 0.1f, 1000.0f);

                        m_diffuse->bind( 0 );
                        m_program->set_opt_uniform( "nv_m_projection", projection );
                        m_program->set_uniform( "light_position", glm::vec3(120.0, 120.0, 0) );
                        m_program->set_uniform( "light_diffuse",  glm::vec4(1.0,1.0,1.0,1.0) );
                        m_program->set_uniform( "light_specular", glm::vec4(1.0,1.0,1.0,1.0) );
                        m_program->set_uniform( "diffuse", 0 );
                }

                {
                        NV_PROFILE( "draw" );
                        glm::mat4 model      = glm::mat4(1.0f);
                        m_mesh->draw( m_render_state, model, view, projection );
                }

                {
                        NV_PROFILE( "swap" );
                        m_window->swap_buffers();
                }

                {
                        NV_PROFILE( "pollevent" );
                        nv::io_event event;
                        while(m_window->poll_event(event)) 
                        {      
                                switch (event.type) 
                                {
                                case nv::EV_QUIT:
                                        keypress = 1;
                                        break;
                                case nv::EV_KEY:
                                        if (event.key.pressed)
                                        {
                                                switch (event.key.code) 
                                                {
                                                case nv::KEY_ESCAPE : keypress = 1; break;
                                                case nv::KEY_F1 : nv::profiler::pointer()->log_report(); break;
                                                default: break;
                                                }
                                        }
                                        break;
                                default: break;
                                }
                        }
                }
                fps_counter.tick();
        }
        return true;
}

application::~application()
{
        delete m_program;
        delete m_mesh;
        delete m_diffuse;
        delete m_window;
        delete m_device;
}


int main(int, char* [])
{
        nv::logger log(nv::LOG_TRACE);
        log.add_sink( new nv::log_file_sink("log.txt"), nv::LOG_TRACE );
        log.add_sink( new nv::log_console_sink(), nv::LOG_TRACE );
        
        NV_LOG( nv::LOG_NOTICE, "Logging started" );
        application app;
        if ( app.initialize() )
        {
                app.run();
        }
        NV_LOG( nv::LOG_NOTICE, "Logging stopped" );

        return 0;
}