void GLAppMain::idle()
{
float ratio = (float)window_width / (float) window_height;
projection.perspective(45,ratio,1,10000);
vec3 lat = vec3(0,1,0)^lookat;
lat.normalize();
// keyboard events
if(keys[KEY_ESC]) exit();
if(keys[' ']){
goon = !goon;
keys[' '] = 0;
}
if(keys[KEY_UP]) {
pos += lookat*(50/fps);
keys[KEY_UP] = 0;
}
if(keys[KEY_DOWN]) {
pos -= lookat*(50/fps);
keys[KEY_DOWN] = 0;
}
if(keys[KEY_LEFT]) {
pos += lat*(50/fps);
keys[KEY_LEFT] = 0;
}
if(keys[KEY_RIGHT]) {
pos -= lat*(50/fps);
keys[KEY_RIGHT] = 0;
}
static int look = 0;
if(!look && mouse_button & BUTTON_LEFT) {
setCursor(window_width / 2,window_height / 2);
mouse_x = window_width / 2;
mouse_y = window_height / 2;
look = 1;
}
if(mouse_button & BUTTON_RIGHT) look = 0;
if(look) {
showCursor(0);
mat3 m;
m.rotate( lat, (mouse_y - window_height / 2) * 0.2 );
lookat = m*lookat;
m.rotate_y( -(mouse_x - window_width / 2) * 0.2 );
lookat = m*lookat;
setCursor(window_width / 2,window_height / 2);
} else showCursor(1);
vec3 up = lookat^lat;
up.normalize();
modelview.look_at(pos,pos+lookat,up);
}
void opengl_display()
{
// glBindFramebuffer(GL_FRAMEBUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER, frame_buffer);
if(torus_mesh.program != NULL)
{
glViewport(0,0,1024,1024);
glClearColor(0.004,0.01,0.01,0.01);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
view_matrix.look_at(vec3(0,0,distance_z), vec3(0,0,0), vec3(0,1,0));
view_proj_matrix = quad_proj_matrix * view_matrix * world_matrix;
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE);
glUseProgram(torus_mesh.program->get_program());
glUniformMatrix4fv(torus_mesh.loc_view_proj_matrix, 1, GL_FALSE, &view_proj_matrix[0]);
torus_mesh.draw();
}
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if(quad_mesh.program != NULL)
{
glViewport(0,0,width, height);
glClearColor(0.004,0.01,0.01,0.01);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDisable(GL_BLEND);
// view_proj_matrix = mat4();
glUseProgram(quad_mesh.program->get_program());
// glUniformMatrix4fv(quad_mesh.loc_view_proj_matrix, 1, GL_FALSE, &view_proj_matrix[0]);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, quad_mesh.texs_idxs[0]);
glUniform1i(quad_mesh.texs_locs[0], 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, quad_mesh.texs_idxs[1]);
glUniform1i(quad_mesh.texs_locs[1], 1);
quad_mesh.draw();
}
}
void opengl_display()
{
static double start = get_time();
float current_time = get_time()-start;
light_dir.x = sin(current_time * 0.6f);
light_dir.z = cos(current_time * 0.6f);
light_pos.x = -light_dir.x * 100.f;
light_pos.z = -light_dir.z * 100.f;
light_pos.y = 10.f * sin(current_time * 0.5f);
/* background and object ******************************************************************/
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//-------------------------------------------------------------------
view_matrix.look_at(vec3(0,0,distance_z), vec3(0,0,0), vec3(0,1,0));
world_view_matrix = view_matrix * world_matrix;
world_view_proj_matrix = proj_matrix * world_view_matrix;
vec3 viewpos = world_view_matrix.inverse() * vec3(0,0,0);
view_pos = vec4(viewpos.x, viewpos.y, viewpos.z, 1.0);
glUseProgram(object_program.p_program->get_program());
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture_bump);
glUniform1i(object_program.texs_locs[0], 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, texture_obj);
glUniform1i(object_program.texs_locs[1], 1);
glUniformMatrix4fv(object_program.loc_world_view_proj, 1, GL_FALSE, &world_view_proj_matrix[0]);
glUniform4fv(object_program.loc_light_pos, 1, &light_pos.x);
glUniform4fv(object_program.loc_light_dir, 1, &light_dir.x);
glUniform4fv(object_program.loc_view_pos, 1, &view_pos.x);
draw(&object_program, &object_mesh);
}
void opengl_display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
static double start = get_time();
float t = get_time()-start;
cos_time = cos(t)*0.2f;
sin_time = sin(t)*0.2f;
view_matrix.look_at(vec3(0,0,distance_z), vec3(0,0,0), vec3(0,1,0));
world_view_matrix = view_matrix * world_matrix;
world_view_proj_matrix = projection_matrix * world_view_matrix;
if(earth_mesh.program != NULL)
{
glUseProgram(earth_mesh.program->get_program());
glUniformMatrix4fv(earth_mesh.loc_world_view_matrix, 1, GL_FALSE, &world_view_matrix[0]);
glUniformMatrix4fv(earth_mesh.loc_world_view_proj_matrix, 1, GL_FALSE, &world_view_proj_matrix[0]);
glUniform1f(earth_mesh.loc_cos_time, cos_time);
glUniform1f(earth_mesh.loc_sin_time, sin_time);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, earth_mesh.texs_idxs[0]);
glUniform1i(earth_mesh.texs_locs[0], 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, earth_mesh.texs_idxs[1]);
glUniform1i(earth_mesh.texs_locs[1], 1);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, earth_mesh.texs_idxs[2]);
glUniform1i(earth_mesh.texs_locs[2], 2);
earth_mesh.draw();
}
}
void opengl_display()
{
glBindFramebuffer(GL_FRAMEBUFFER, render_fbo);
if(model_mesh.program != NULL)
{
glViewport(0,0,512,512);
glClearColor(0,0,0,0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
world_view_matrix.look_at(vec3(0,0,distance_z), vec3(0,0,0), vec3(0,1,0));
world_view_matrix *= world_matrix;
view_proj_matrix = quad_proj_matrix * world_view_matrix;
glUseProgram(model_mesh.program->get_program());
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, model_mesh.texs_idxs[0]);
glUniform1i(model_mesh.texs_locs[0], 0);
glUniformMatrix4fv(model_mesh.loc_view_proj_matrix, 1, GL_FALSE, &view_proj_matrix[0]);
glUniformMatrix4fv(model_mesh.loc_view_matrix, 1, GL_FALSE, &world_view_matrix[0]);
model_mesh.draw();
}
glBindFramebuffer(GL_FRAMEBUFFER, blur_fbo);
if(blur_mesh.program != NULL)
{
glViewport(0,0,512, 512);
glClearColor(0,0,0,0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDisable(GL_DEPTH_TEST);
glUseProgram(blur_mesh.program->get_program());
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, blur_mesh.texs_idxs[0]);
glUniform1i(blur_mesh.texs_locs[0], 0);
blur_mesh.draw();
}
glBindFramebuffer(GL_FRAMEBUFFER, 0);
if(combine_mesh.program != NULL)
{
glViewport(0,0,width, height);
glClearColor(0,0,0,0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glDisable(GL_DEPTH_TEST);
glUseProgram(combine_mesh.program->get_program());
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, combine_mesh.texs_idxs[0]);
glUniform1i(combine_mesh.texs_locs[0], 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, combine_mesh.texs_idxs[1]);
glUniform1i(combine_mesh.texs_locs[1], 1);
combine_mesh.draw();
}
}
void opengl_display()
{
static double start = get_time();
float t = get_time()-start;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
t *= 25.f;
background_world.rotate_y(t);
vec3 eye = vec3(0,0,distance_z);
view.look_at(eye, vec3(0,0,0), vec3(0,1,0));
//render background
wvp = projection * background_world;
if(background_mesh.program != NULL)
{
glDisable(GL_CULL_FACE);
glUseProgram(background_mesh.program->get_program());
glUniformMatrix4fv(background_mesh.wvp_loc, 1, GL_FALSE, &wvp[0]);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_CUBE_MAP, background_mesh.texs_idxs[0]);
glUniform1i(background_mesh.texs_locs[0], 0);
glUniformMatrix4fv(background_mesh.wvp_loc, 1, GL_FALSE, &wvp[0]);
background_mesh.draw();
}
//render statue
env_inv_world = background_world.inverse();
wvp = projection * view;
wvp *= statue_world;
eye = env_inv_world * eye;
if(statue_mesh.program != NULL)
{
glEnable(GL_CULL_FACE);
glUseProgram(statue_mesh.program->get_program());
glUniformMatrix4fv(statue_mesh.wvp_loc, 1, GL_FALSE, &wvp[0]);
glUniformMatrix4fv(statue_mesh.world_loc, 1, GL_FALSE, &statue_world[0]);
glUniformMatrix4fv(statue_mesh.env_inv_world_loc, 1,GL_FALSE, &env_inv_world[0]);
glUniform3fv(statue_mesh.eye_loc, 1, &eye.x);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, statue_mesh.texs_idxs[0]);
glUniform1i(statue_mesh.texs_locs[0], 0);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_CUBE_MAP, statue_mesh.texs_idxs[1]);
glUniform1i(statue_mesh.texs_locs[1], 1);
statue_mesh.draw();
}
}
