Cloud Window

struct CloudWindow

Cloud Window Struct.

Public Functions

CloudWindow()

const CloudWindow &operator=(const CloudWindow&)

assignment operator only copies properties, not state.

void Update(vec3 wind_spd_ms, float dt)

void Reset()

Reset offsets.

void InitWindowCentre(double lat_degrees, double long_degrees, double x_heading_degrees)

Initialize the window.

float UpdateWindowCentre(double lat_degrees, double long_degrees, double heading_degrees)

Returns updated x heading in degrees.

Returns updated x heading in degrees. We pass in the viewpoint lat/long, this is what we want to keep the window centre close to. The cloud volume is offset from the origin by the windOffset.

void MoveCloudWindowGridCentreTexel(int x, int y)

Translate the cloud window by the given x and y.

void MoveCloudWindowInitialTexel(int x, int y)

void CheckForOriginChange(crossplatform::Quaterniond new_origin, const CloudRenderingOptions &opts)

Check if the cloud window origin has changed, and update values if it has.

void SetTrueWindOffset()

void SetAccumulatedWindOffsetKm(vec3 accumulatedWindOffset)

void GetLatitudeLongitudeHeading(vec3 pos, double &lat, double &lon, double &head) const

Get the latitude/longitude referred to by the specified position value.

void GetOriginLatitudeLongitudeHeading(double &lat_deg, double &lon_deg, double &head_deg) const

Get the latitude/longitude referred to by the specified quaternion.

double GetOriginLatitudeDegrees() const

Get the latitude referred to by the origin quaternion.

double GetOriginLongitudeDegrees() const

Get the longitude referred to by the origin quaternion.

double GetOriginHeadingDegrees() const

vec3 GlobalQuaternionToLocalOffsetKm(crossplatform::Quaterniond global_quat) const

vec3 WGS84PositionToLocal(vec3d pos_km) const

vec3 WGS84DirectionToLocal(vec3d dir) const

vec3d LocalPositionToWGS84(vec3d pos) const

vec3d LocalDirectionToWGS84(vec3d dir) const

int2 GetGridOffset(int2 old_ctr) const

Public Members

float MinimumHeightKm

int3 VolumeTextureGrid

vec3 windOffsetKm

vec3 accumulatedWindOffsetKm

crossplatform::Quaterniond origin

int WindowGridX

int WindowGridZ

int PrecipitationGridDivisorX

int PrecipitationGridDivisorZ

vec3 WindowScaleKm

int2 initialCentreTexelPos = int2(0, 0)

int2 WindowGridCentreTexel

unsigned window_checksum

crossplatform::Quaterniond last_origin

vec3 EdgeNoiseOffsetKm

vec3 WorleyOffsetKm

vec3 GridOriginKm

float planetRadiusKm

Public Static Functions

static void GetLatitudeLongitudeHeadingDegrees(crossplatform::Quaterniond new_origin, vec3 pos, float planetRadiusKm, double &lat, double &lon, double &head)

static crossplatform::Quaterniond LatLongHeadingDegreesToQuaternion(double lat_deg, double long_deg, double heading_deg)

static crossplatform::Quaterniond LatLongHeadingToQuaternion(double lat_radians, double long_radians, double heading_radians)

static crossplatform::Quaterniond XYZToQuaternion(vec3d pos)