bool load_content() {
// *********************************
// Create shadow map- use screen size
shadow = shadow_map(renderer::get_screen_width(), renderer::get_screen_height());
// Create plane mesh
meshes["plane"] = mesh(geometry_builder::create_plane());
// Create "teapot" mesh by loading in models/teapot.obj
meshes["teapot"] = mesh(geometry("models/teapot.obj"));
// Need to rotate the teapot on x by negative pi/2
meshes["teapot"].get_transform().rotate(vec3(-90.0, 0.0, 0.0));
// Scale the teapot - (0.1, 0.1, 0.1)
meshes["teapot"].get_transform().scale = vec3(0.1,0.1,0.1);
// ***********************
// Set materials
// - all emissive is black
// - all specular is white
// - all shininess is 25
// ***********************
// White plane
meshes["plane"].get_material().set_emissive(vec4(0.0f, 0.0f, 0.0f, 1.0f));
meshes["plane"].get_material().set_diffuse(vec4(1.0f, 1.0f, 1.0f, 1.0f));
meshes["plane"].get_material().set_specular(vec4(1.0f, 1.0f, 1.0f, 1.0f));
meshes["plane"].get_material().set_shininess(25.0f);
// Red teapot
meshes["teapot"].get_material().set_emissive(vec4(0.0f, 0.0f, 0.0f, 1.0f));
meshes["teapot"].get_material().set_diffuse(vec4(1.0f, 0.0f, 0.0f, 1.0f));
meshes["teapot"].get_material().set_specular(vec4(1.0f, 1.0f, 1.0f, 1.0f));
meshes["teapot"].get_material().set_shininess(25.0f);
// *********************************
// Set spot properties
// Pos (20, 30, 0), White
// Direction (-1, -1, 0) normalized
// 50 range, 10 power
spot.set_position(vec3(20.0f, 30.0f, 0.0f));
spot.set_light_colour(vec4(1.0f, 1.0f, 1.0f, 1.0f));
spot.set_direction(normalize(vec3(-1.0f, -1.0f, 0.0f)));
spot.set_range(50.0f);
spot.set_power(10.0f);
// Load in shaders
shadow_eff.add_shader("50_Spot_Light/spot.vert", GL_VERTEX_SHADER);
shadow_eff.add_shader("50_Spot_Light/spot.frag", GL_FRAGMENT_SHADER);
// Build effect
shadow_eff.build();
// Set camera properties
cam.set_position(vec3(0.0f, 20.0f, -30.0f));
cam.set_target(vec3(0.0f, 0.0f, 0.0f));
cam.set_projection(quarter_pi<float>(), renderer::get_screen_aspect(), 0.1f, 1000.0f);
return true;
}
bool update(float delta_time) {
// Rotate the teapot
meshes["teapot"].get_transform().rotate(vec3(0.0f, 0.0f, half_pi<float>()) * delta_time);
// *********************************
// Update the shadow map properties from the spot light
shadow.light_position = spot.get_position();
shadow.light_dir = spot.get_direction();
// *********************************
// Press s to save
if (glfwGetKey(renderer::get_window(), 'S') == GLFW_PRESS) {
shadow.buffer->save("test.png");
}
cam.update(delta_time);
return true;
}
bool load_content() {
// *********************************
// Create shadow map- use screen size
// Create plane mesh
// Create "teapot" mesh by loading in models/teapot.obj
// Need to rotate the teapot on x by negative pi/2
// Scale the teapot - (0.1, 0.1, 0.1)
// *********************************
// Load texture
tex = texture("textures/checker.png");
// ***********************
// Set materials
// - all emissive is black
// - all specular is white
// - all shininess is 25
// ***********************
// White plane
meshes["plane"].get_material().set_emissive(vec4(0.0f, 0.0f, 0.0f, 1.0f));
meshes["plane"].get_material().set_diffuse(vec4(1.0f, 1.0f, 1.0f, 1.0f));
meshes["plane"].get_material().set_specular(vec4(1.0f, 1.0f, 1.0f, 1.0f));
meshes["plane"].get_material().set_shininess(25.0f);
// Red teapot
meshes["teapot"].get_material().set_emissive(vec4(0.0f, 0.0f, 0.0f, 1.0f));
meshes["teapot"].get_material().set_diffuse(vec4(1.0f, 1.0f, 1.0f, 1.0f));
meshes["teapot"].get_material().set_specular(vec4(1.0f, 1.0f, 1.0f, 1.0f));
meshes["teapot"].get_material().set_shininess(25.0f);
// *******************
// Set spot properties
// *******************
// Pos (20, 30, 0), White
// Direction (-1, -1, 0) normalized
// 50 range, 10 power
spot.set_position(vec3(30.0f, 20.0f, 0.0f));
spot.set_light_colour(vec4(1.0f, 1.0f, 1.0f, 1.0f));
spot.set_direction(normalize(vec3(-1.0f, -1.0f, 0.0f)));
spot.set_range(500.0f);
spot.set_power(10.0f);
// Load in shaders
main_eff.add_shader("54_Shadowing/shadow.vert", GL_VERTEX_SHADER);
vector<string> frag_shaders{"54_Shadowing/shadow.frag", "shaders/part_spot.frag", "shaders/part_shadow.frag"};
main_eff.add_shader(frag_shaders, GL_FRAGMENT_SHADER);
shadow_eff.add_shader("50_Spot_Light/spot.vert", GL_VERTEX_SHADER);
shadow_eff.add_shader("50_Spot_Light/spot.frag", GL_FRAGMENT_SHADER);
// Build effects
main_eff.build();
shadow_eff.build();
// Set camera properties
cam.set_position(vec3(0.0f, 50.0f, -75.0f));
cam.set_target(vec3(0.0f, 0.0f, 0.0f));
cam.set_projection(quarter_pi<float>(), renderer::get_screen_aspect(), 0.1f, 1000.0f);
return true;
}