Class: HorizonProjection
Defined in: src/sdk/components/horizon/HorizonProjection.ts:165
A perspective projection from the point of view of an airplane.
Constructors
Constructor
new HorizonProjection(
projectedWidth,projectedHeight,fov):HorizonProjection
Defined in: src/sdk/components/horizon/HorizonProjection.ts:232
Constructor.
Parameters
| Parameter | Type | Description |
|---|---|---|
projectedWidth | number | The initial projected width of the projection, in pixels. |
projectedHeight | number | The initial projected height of the projection, in pixels. |
fov | number | The initial field of view of the projection, in degrees. |
Returns
HorizonProjection
Methods
applyQueued()
applyQueued():
void
Defined in: src/sdk/components/horizon/HorizonProjection.ts:471
Applies the set of queued projection changes, if any are queued.
Returns
void
getAltitude()
getAltitude():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:253
Gets the altitude of this projection, in meters above mean sea level.
Returns
number
The altitude of this projection, in meters above mean sea level.
getFocalLength()
getFocalLength():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:323
Gets the focal length of this projection, in meters. The focal length is set such that one meter at a distance from the camera equal to the focal length subtends an angle equal to the field of view.
Returns
number
The focal length of this projection, in meters.
getFov()
getFov():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:304
Gets the field of view of this projection, in degrees.
Returns
number
The field of view of this projection, in degrees.
getFovEndpoints()
getFovEndpoints():
ReadonlyFloat64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:314
Gets the projected endpoints at which the field of view is measured, as [x1, y1, x2, y2], with each component
expressed relative to the width or height of the projected window.
Returns
The projected endpoints at which the field of view is measured, as [x1, y1, x2, y2], with each
component expressed relative to the width or height of the projected window.
getHeading()
getHeading():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:261
Gets the true heading of this projection, in degrees.
Returns
number
The true heading of this projection, in degrees.
getHeadingScaleFactor()
getHeadingScaleFactor():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:348
Gets the heading angle scale factor of this projection. When a point is projected, its relative heading angle is scaled by this value before projection. The relative heading angle of a point is the difference between the bearing of the point from the airplane and the airplane's heading. A scaling factor of 1 leaves points unchanged. Factors less than 1 cause points to be projected closer to the lubber line. Factors greater than 1 cause points to be projected farther from the lubber line.
Returns
number
The heading angle scale factor of this projection.
getOffset()
getOffset():
ReadonlyFloat64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:288
Gets the offset of this projection's camera relative to the airplane, as [x, y, z] in meters using the
airplane's coordinate system. The positive z axis points in the forward direction of the airplane, the positive x
axis points in the upward direction, and the positive y axis points to the right.
Returns
The offset of this projection's camera relative to the airplane, as [x, y, z] in meters using the
airplane's coordinate system.
getOffsetCenterProjected()
getOffsetCenterProjected():
ReadonlyFloat64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:373
Gets the projected center of this projection, including offset, as [x, y] in pixels.
Returns
The projected center of this projection, including offset, as [x, y] in pixels.
getPitch()
getPitch():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:269
Gets the pitch of this projection, in degrees. Positive values indicate upward pitch.
Returns
number
The pitch of this projection, in degrees.
getPitchScaleFactor()
getPitchScaleFactor():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:336
Gets the pitch angle scale factor of this projection. When a point is projected, its relative zero-roll pitch angle is scaled by this value before projection. The relative zero-roll pitch angle of a point is the pitch angle of the point relative to the camera if the airplane had zero degrees of roll. A scaling factor of 1 leaves points unchanged. Factors less than 1 cause points to be projected closer to the pitch line corresponding to the airplane's pitch. Factors greater than 1 cause points to be projected farther from the pitch line corresponding to the airplane's pitch.
Returns
number
The pitch angle scale factor of this projection.
getPosition()
getPosition():
GeoPointReadOnly
Defined in: src/sdk/components/horizon/HorizonProjection.ts:245
Gets the position of this projection.
Returns
The position of this projection.
getProjectedOffset()
getProjectedOffset():
ReadonlyFloat64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:365
Gets the projected offset of this projection's center, as [x, y] in pixels.
Returns
The projected offset of this projection's center, as [x, y] in pixels.
getProjectedSize()
getProjectedSize():
ReadonlyFloat64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:296
Gets the size of the projected window, as [width, height] in pixels.
Returns
The size of the projected window, as [width, height] in pixels.
getRoll()
getRoll():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:277
Gets the roll of this projection, in degrees. Positive values indicate rightward roll.
Returns
number
The roll of this projection, in degrees.
getScaleFactor()
getScaleFactor():
number
Defined in: src/sdk/components/horizon/HorizonProjection.ts:357
Gets the nominal scale factor of this projection. At a distance from the camera equal to the focal length, one meter will be projected to a number of pixels equal to the nominal scale factor.
Returns
number
The nominal scale factor of this projection.
invertToCameraRelativeAngles()
invertToCameraRelativeAngles(
x,y,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:794
Inverts a pair of projected coordinates to calculate the pitch angle and true bearing (both relative to the horizontal plane with origin at the camera) of the set of points in 3D space that are projected to those coordinates.
Parameters
| Parameter | Type | Description |
|---|---|---|
x | number | The projected x coordinate to invert. |
y | number | The projected y coordinate to invert. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The pitch angle and true bearing (both relative to the horizontal plane with origin at the camera) of the
set of points in 3D space that are projected to the specified coordinates, as [pitch angle, true bearing] in
degrees.
isInProjectedBounds()
Call Signature
isInProjectedBounds(
point,altitude,bounds?):boolean
Defined in: src/sdk/components/horizon/HorizonProjection.ts:883
Checks whether a point falls within certain projected bounds.
Parameters
| Parameter | Type | Description |
|---|---|---|
point | Readonly<LatLonInterface> | The lat/lon coordinates of the point to check. |
altitude | number | The altitude of the point to check, in meters. |
bounds? | Readonly<Omit<Float64Array<ArrayBufferLike>, "set" | "sort" | "copyWithin">> | The bounds to check against, expressed as [left, top, right, bottom] in pixels. Defaults to the bounds of the projected window. |
Returns
boolean
Whether the point falls within the projected bounds.
Call Signature
isInProjectedBounds(
point,bounds?):boolean
Defined in: src/sdk/components/horizon/HorizonProjection.ts:891
Checks whether a projected point falls within certain projected bounds.
Parameters
| Parameter | Type | Description |
|---|---|---|
point | ReadonlyFloat64Array | The projected point to check, as [x, y] in pixels. |
bounds? | Readonly<Omit<Float64Array<ArrayBufferLike>, "set" | "sort" | "copyWithin">> | The bounds to check against, expressed as [left, top, right, bottom] in pixels. Defaults to the bounds of the projected window. |
Returns
boolean
Whether the point falls within the projected bounds.
onChange()
onChange(
listener):Subscription
Defined in: src/sdk/components/horizon/HorizonProjection.ts:539
Subscribes a change listener to this projection. The listener will be called every time this projection changes. A listener can be subscribed multiple times; it will be called once for every time it is registered.
Parameters
| Parameter | Type | Description |
|---|---|---|
listener | HorizonProjectionChangeListener | The change listener to subscribe. |
Returns
The new subscription.
project()
project(
position,altitude,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:550
Projects a point represented by a set of lat/lon coordinates and altitude.
Parameters
| Parameter | Type | Description |
|---|---|---|
position | Readonly<LatLonInterface> | The lat/lon coordinates of the point to project. |
altitude | number | The altitude of the point to project, in meters. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
projectCameraRelativeAngular()
projectCameraRelativeAngular(
distance,bearing,pitch,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:747
Projects a point relative to the position of the projection camera in Euclidean space. The point to project is expressed in terms of distance, bearing and pitch. The coordinate system is defined at the position of the camera, with the vertical axis perpendicular to the surface of the Earth and the horizontal plane parallel to the Earth's surface at the point directly underneath the camera.
Parameters
| Parameter | Type | Description |
|---|---|---|
distance | number | The Euclidean distance from the point to project to the camera, in meters. |
bearing | number | The true bearing from the camera to the point to project, in degrees. |
pitch | number | The pitch angle from the camera to the point to project, in degrees. The pitch angle is measured relative to the horizontal plane, with positive angles sweeping above the plane. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
projectCameraRelativeCoordinates()
Call Signature
projectCameraRelativeCoordinates(
x,y,z,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:693
Projects a set of 3D coordinates defined relative to the camera, as [x, y, z] in meters with the coordinate
system defined as follows for an airplane with heading/roll/pitch of zero degrees:
- The positive z axis points in the direction of the airplane.
- The positive x axis points directly upward.
- The positive y axis points to the right.
Parameters
| Parameter | Type | Description |
|---|---|---|
x | number | The x component of the coordinates to project. |
y | number | The y component of the coordinates to project. |
z | number | The z component of the coordinates to project. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
Call Signature
projectCameraRelativeCoordinates(
coords,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:704
Projects a set of 3D coordinates defined relative to the camera, as [x, y, z] in meters with the coordinate
system defined as follows for an airplane with heading/roll/pitch of zero degrees:
- The positive z axis points in the direction of the airplane.
- The positive x axis points directly upward.
- The positive y axis points to the right.
Parameters
| Parameter | Type | Description |
|---|---|---|
coords | ReadonlyFloat64Array | The coordinates to project. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
projectCameraRelativeEuclidean()
projectCameraRelativeEuclidean(
bearing,distance,height,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:725
Projects a point relative to the position of the projection camera in Euclidean space. The point to project is expressed in terms of bearing, horizontal distance, and height. The coordinate system is defined at the position of the camera, with the vertical axis perpendicular to the surface of the Earth and the horizontal plane parallel to the Earth's surface at the point directly underneath the camera.
Parameters
| Parameter | Type | Description |
|---|---|---|
bearing | number | The true bearing from the camera to the point to project, in degrees. |
distance | number | The Euclidean horizontal distance from the point to project to the camera, in meters. |
height | number | The Euclidean height of the point to project relative to the camera, in meters. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
projectRelativeAngular()
projectRelativeAngular(
distance,bearing,pitch,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:642
Projects a point relative to the position of the airplane in Euclidean space. The point to project is expressed in terms of distance, relative bearing and pitch. The coordinate system is defined at the position of the airplane, with the vertical axis perpendicular to the surface of the Earth and the horizontal plane parallel to the Earth's surface at the point directly underneath the airplane.
Parameters
| Parameter | Type | Description |
|---|---|---|
distance | number | The Euclidean distance from the point to project to the airplane, in meters. |
bearing | number | The relative bearing from the airplane to the point to project, in degrees. The relative bearing is measured relative to the airplane's heading, with positive angles sweeping clockwise when viewed from above. |
pitch | number | The pitch angle from the airplane to the point to project, in degrees. The pitch angle is measured relative to the horizontal plane, with positive angles sweeping above the plane. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
projectRelativeCoordinates()
Call Signature
projectRelativeCoordinates(
x,y,z,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:571
Projects a set of 3D coordinates defined relative to the airplane, as [x, y, z] in meters with the coordinate
system defined as follows for an airplane with heading/roll/pitch of zero degrees:
- The positive z axis points in the direction of the airplane.
- The positive x axis points directly upward.
- The positive y axis points to the right.
Parameters
| Parameter | Type | Description |
|---|---|---|
x | number | The x component of the coordinates to project. |
y | number | The y component of the coordinates to project. |
z | number | The z component of the coordinates to project. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
Call Signature
projectRelativeCoordinates(
coords,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:582
Projects a set of 3D coordinates defined relative to the airplane, as [x, y, z] in meters with the coordinate
system defined as follows for an airplane with heading/roll/pitch of zero degrees:
- The positive z axis points in the direction of the airplane.
- The positive x axis points directly upward.
- The positive y axis points to the right.
Parameters
| Parameter | Type | Description |
|---|---|---|
coords | ReadonlyFloat64Array | The coordinates to project. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
projectRelativeEuclidean()
projectRelativeEuclidean(
bearing,distance,height,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:619
Projects a point relative to the position of the airplane in Euclidean space. The point ot project is expressed in terms of bearing, horizontal distance, and height. The coordinate system is defined at the position of the airplane, with the vertical axis perpendicular to the surface of the Earth and the horizontal plane parallel to the Earth's surface at the point directly underneath the airplane.
Parameters
| Parameter | Type | Description |
|---|---|---|
bearing | number | The true bearing from the airplane to the point to project, in degrees. |
distance | number | The Euclidean horizontal distance from the point to project to the airplane, in meters. |
height | number | The Euclidean height of the point to project relative to the airplane, in meters. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
projectRelativeSpherical()
projectRelativeSpherical(
bearing,distance,height,out):Float64Array
Defined in: src/sdk/components/horizon/HorizonProjection.ts:600
Projects a point relative to the position of the airplane in spherical space.
Parameters
| Parameter | Type | Description |
|---|---|---|
bearing | number | The true bearing from the airplane to the point to project, in degrees. |
distance | number | The geodetic horizontal distance from the point to project to the airplane, in meters. |
height | number | The geodetic height of the point to project relative to the airplane, in meters. |
out | Float64Array | The 2D vector to which to write the result. |
Returns
Float64Array
The projected point, as [x, y] in pixels.
set()
set(
parameters):void
Defined in: src/sdk/components/horizon/HorizonProjection.ts:424
Sets this projection's parameters. Parameters not explicitly defined in the parameters argument will be left unchanged.
Parameters
| Parameter | Type | Description |
|---|---|---|
parameters | HorizonProjectionParameters | The new parameters. |
Returns
void
setQueued()
setQueued(
parameters):void
Defined in: src/sdk/components/horizon/HorizonProjection.ts:463
Sets the projection parameters to be applied when applyQueued() is called.
Parameters
| Parameter | Type | Description |
|---|---|---|
parameters | HorizonProjectionParameters | The parameter changes to queue. |
Returns
void