internal void CalculateCameraParameters(NativeCameraState nativeCameraState, out DoubleVector3 cameraPositionECEF, out DoubleVector3 interestPointECEF, out Vector3 cameraUpECEF)
{
var scaledInterestPoint = ScaleInterestPointWithEnvironmentFlattening(nativeCameraState.interestPointECEF);
Vector3 forward, up;
DoubleVector3 positionECEF;
CameraHelpers.CalculateLookAt(
scaledInterestPoint,
nativeCameraState.interestBasisForwardECEF,
nativeCameraState.pitchDegrees * Mathf.Deg2Rad,
nativeCameraState.distanceToInterestPoint,
out positionECEF, out forward, out up);
interestPointECEF = scaledInterestPoint;
cameraPositionECEF = positionECEF;
cameraUpECEF = up;
}
internal void ApplyNativeCameraState(NativeCameraState nativeCameraState, UnityEngine.Camera controlledCamera)
{
// assuming uniform scale
var mapScale = m_root.transform.lossyScale;
Debug.Assert(Mathf.Approximately(mapScale.x, mapScale.y) && Mathf.Approximately(mapScale.x, mapScale.z),
"When using built-in camera controls the map must have a uniform scale (identical along all axes).");
controlledCamera.fieldOfView = nativeCameraState.fieldOfViewDegrees;
controlledCamera.nearClipPlane = nativeCameraState.nearClipPlaneDistance * mapScale.x;
controlledCamera.farClipPlane = nativeCameraState.farClipPlaneDistance * mapScale.x;
DoubleVector3 cameraPositionECEF, interestPointECEF;
Vector3 cameraUpECEF;
CalculateCameraParameters(nativeCameraState, out cameraPositionECEF, out interestPointECEF, out cameraUpECEF);
m_interestPointProvider.UpdateFromNative(interestPointECEF);
var cameraRotation = new Quaternion();
if (m_coordinateSystem == CoordinateSystem.ECEF)
{
var position = (cameraPositionECEF - m_originECEF).ToSingleVector();
var interestPointPosition = (interestPointECEF - m_originECEF).ToSingleVector();
var cameraToInterestPoint = interestPointPosition - position;
controlledCamera.transform.position = m_root.transform.TransformPoint(position);
cameraRotation.SetLookRotation(cameraToInterestPoint.normalized, cameraUpECEF);
controlledCamera.transform.rotation = m_root.transform.rotation * cameraRotation;
}
else // if (m_coordinateSystem == CoordinateSystem.UnityWorld)
{
var localCameraPosition = m_frame.ECEFToLocalSpace(cameraPositionECEF);
controlledCamera.transform.position = m_root.transform.TransformPoint(localCameraPosition);
var localUp = m_frame.ECEFToLocalRotation * cameraUpECEF;
var cameraToInterestPointECEF = (interestPointECEF - cameraPositionECEF).ToSingleVector();
var localViewDirection = m_frame.ECEFToLocalRotation * cameraToInterestPointECEF;
cameraRotation.SetLookRotation(localViewDirection.normalized, localUp);
controlledCamera.transform.rotation = m_root.transform.rotation * cameraRotation;
}
}
internal void ApplyNativeCameraState(NativeCameraState nativeCameraState, UnityEngine.Camera controlledCamera)
{
controlledCamera.fieldOfView = nativeCameraState.fieldOfViewDegrees;
controlledCamera.nearClipPlane = nativeCameraState.nearClipPlaneDistance;
controlledCamera.farClipPlane = nativeCameraState.farClipPlaneDistance;
var interestBasis = new EcefTangentBasis(
nativeCameraState.interestPointECEF,
nativeCameraState.interestBasisRightECEF,
nativeCameraState.interestBasisUpECEF,
nativeCameraState.interestBasisForwardECEF);
Vector3 forward, up;
DoubleVector3 positionECEF;
CameraHelpers.CalculateLookAt(
interestBasis.PointEcef,
interestBasis.Forward,
nativeCameraState.pitchDegrees * Mathf.Deg2Rad,
nativeCameraState.distanceToInterestPoint,
out positionECEF, out forward, out up);
m_interestPointProvider.UpdateFromNative(nativeCameraState.interestPointECEF);
if (m_coordinateSystem == CoordinateSystem.ECEF)
{
var position = (positionECEF - m_originECEF).ToSingleVector();
controlledCamera.transform.position = position;
controlledCamera.transform.LookAt((interestBasis.PointEcef - m_originECEF).ToSingleVector(), up);
}
else // if (m_coordinateSystem == CoordinateSystem.UnityWorld)
{
controlledCamera.transform.position = m_frame.ECEFToLocalSpace(positionECEF);
controlledCamera.transform.LookAt(m_frame.ECEFToLocalSpace(interestBasis.PointEcef), m_frame.ECEFToLocalRotation * up);
}
}