make_navigation_state()

NavigationState MayaFlux::Kinesis::make_navigation_state

(

const NavigationConfig &

config

)

Construct a NavigationState from a NavigationConfig.

Derives initial yaw and pitch from the look direction (config.initial_target - config.initial_eye) so the first frame does not produce a view jump.

Parameters

config

Source configuration

Returns

Initialised NavigationState

Definition at line 5 of file NavigationState.cpp.

{
    NavigationState st;
    st.eye = config.initial_eye;
    st.move_speed = config.move_speed;
    st.mouse_sensitivity = config.mouse_sensitivity;
    st.scroll_speed = config.scroll_speed;
    st.fov_radians = config.fov_radians;
    st.near_plane = config.near_plane;
    st.far_plane = config.far_plane;
 
    const glm::vec3 dir = glm::normalize(config.initial_target - config.initial_eye);
    st.yaw = std::atan2(dir.x, dir.z);
    st.pitch = std::asin(glm::clamp(dir.y, -1.0F, 1.0F));
 
    return st;
}

References MayaFlux::Kinesis::NavigationState::eye, MayaFlux::Kinesis::NavigationConfig::far_plane, MayaFlux::Kinesis::NavigationState::far_plane, MayaFlux::Kinesis::NavigationConfig::fov_radians, MayaFlux::Kinesis::NavigationState::fov_radians, MayaFlux::Kinesis::NavigationConfig::initial_eye, MayaFlux::Kinesis::NavigationConfig::initial_target, MayaFlux::Kinesis::NavigationConfig::mouse_sensitivity, MayaFlux::Kinesis::NavigationState::mouse_sensitivity, MayaFlux::Kinesis::NavigationConfig::move_speed, MayaFlux::Kinesis::NavigationState::move_speed, MayaFlux::Kinesis::NavigationConfig::near_plane, MayaFlux::Kinesis::NavigationState::near_plane, MayaFlux::Kinesis::NavigationState::pitch, MayaFlux::Kinesis::NavigationConfig::scroll_speed, MayaFlux::Kinesis::NavigationState::scroll_speed, and MayaFlux::Kinesis::NavigationState::yaw.

Referenced by MayaFlux::bind_viewport_preset().

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