void Object3D::set_look_at(const Object3DPtr &theLookAt)
{
set_look_at(-theLookAt->position() + position(), theLookAt->up());
}
void bc_free_camera::update(core_platform::bc_clock::update_param p_clock_update_param,
const platform::bc_pointing_device& p_pointing_device,
const platform::bc_key_device& p_key_device)
{
core::bc_vector3f l_position = get_position();
bcFLOAT l_move_speed = m_shift_pressed ? m_move_speed * 6 : m_ctrl_pressed ? m_move_speed * 0.25 : m_move_speed;
bcFLOAT l_rotate_speed = m_rotate_speed;
l_move_speed *= p_clock_update_param.m_elapsed_second;
l_rotate_speed *= p_clock_update_param.m_elapsed_second;
if (m_w_pressed)
{
l_position += get_forward() * l_move_speed;
}
if (m_s_pressed)
{
l_position += get_back() * l_move_speed;
}
if (m_a_pressed)
{
l_position += get_left() * l_move_speed;
}
if (m_d_pressed)
{
l_position += get_right() * l_move_speed;
}
if (m_e_pressed)
{
l_position += get_down() * l_move_speed;
}
if (m_q_pressed)
{
l_position += get_up() * l_move_speed;
}
core::bc_vector3f l_direction = get_direction();
if (m_rmb_pressed)
{
bcFLOAT l_pi = 3.14159265358979323846 / 2;
auto l_dx = -m_dx * l_rotate_speed;
auto l_dy = m_dy * l_rotate_speed;
if (m_dy > l_pi)
{
m_dy = l_pi;
}
if (m_dy < -l_pi)
{
m_dy = -l_pi;
}
core::bc_matrix3f l_rotation_y;
core::bc_matrix3f l_rotation_x;
core::bc_matrix3f l_rotation;
core::bc_vector3f l_right = get_right();
core::bc_vector3f l_up = get_up();
if(graphic::bc_render_api_info::is_left_handed())
{
l_rotation_y.rotation_euler_lh(l_up, -l_dx);
l_rotation_x.rotation_euler_lh(l_right, l_dy);
}
else
{
l_rotation_y.rotation_euler_rh(l_up, -l_dx);
l_rotation_x.rotation_euler_rh(l_right, l_dy);
}
l_rotation = l_rotation_y * l_rotation_x;
l_direction = l_rotation * l_direction;
l_direction.normalize();
}
auto l_lookat = l_position + l_direction;
set_look_at(l_position, l_lookat, core::bc_vector3f(0, 1, 0));
m_dx = 0;
m_dy = 0;
}