Runtime camera and bearing strange behaviour

Durga_PrasadD — Thu, 19 Nov 2015 14:57:19 GMT

I find strange behavior with below implementation in Scene examples.The movement appears to have unexpected heading changes along the path.I have a set of points which are perfectly interpolated and are working fine in 2D animation.

public double generateBearing(double ox, double oy, double dx, double dy)

{

double bearing = 0.0;

double lon1 = ToRad(ox);

double lat1 = ToRad(oy);

double lon2 = ToRad(dx);

double lat2 = ToRad(dy);

double dLon = lon2 - lon1;

double y = Math.Sin(dLon) * Math.Cos(lat2);

double x = Math.Cos(lat1) * Math.Sin(lat2) - Math.Sin(lat1) * Math.Cos(lat2) * Math.Cos(dLon);

double bRad = Math.Atan2(y, x);

double tmpB = ToDegrees(bRad);

//bearing =360.0-(tmpB+270.0)%360.0;

bearing = tmpB;

return bearing;

}

private void CreateAnimationViewpoints()

{

_animationViewpoints = new List<Camera>();

Array.Reverse(x);

Array.Reverse(y);

heading = new double[nPointCount];

for (int i = 0; i < nPointCount-1; i++)

{

heading=generateBearing(x, y, x[i + 1], y[i + 1]);

// heading = getBearing(x, y, x[i + 1], y[i + 1]);

_animationViewpoints.Add(new Camera(new MapPoint(x, y, 50), heading, 70));

}

private async void MySceneView_SpatialReferenceChanged(object sender, System.EventArgs e)

{

MySceneView.SpatialReferenceChanged -= MySceneView_SpatialReferenceChanged;

try

{

for (int i = 0; i < nPointCount; i++)

{

await MySceneView.SetViewAsync(_animationViewpoints, 1, false);

}

// Set navigation in the order we want to animate the camera

}

catch (Exception ex)

{

MessageBox.Show("Error occured while navigating to the target viewpoint",

"An error occured");

Debug.WriteLine(ex.ToString());

}

Re: Runtime camera and bearing strange behaviour

EricBader — Tue, 24 Nov 2015 20:21:26 GMT

Hi Durga,

In a previous life I was a .NET programmer, and this code looks very familiar!

Have you also posted this question to our .NET forum? This one here is specific to Android.

Thanks!

Re: Runtime camera and bearing strange behaviour

AnttiKajanus1 — Thu, 26 Nov 2015 10:03:56 GMT

Could you provide a bit more details and/or full reproducible application to demonstrate the issue?

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Runtime camera and bearing strange behaviour

Re: Runtime camera and bearing strange behaviour

Re: Runtime camera and bearing strange behaviour