Convert GeoCoordinates to Vector3 of three.js

[belopot]

Hello,
I want to get the position of a point of three.js scene from GeoCoordinates.
I used @here/harp-geoutils/Projection

My code is following as:

I'm getting the issue

Any advice?
Thank you

[nzjony]

@belopot , which projection do you want?

The class Projection is just an abstract class, see:

harp.gl/@here/harp-geoutils/lib/projection/Projection.ts

Line 35 in fe49b42

export abstract class Projection {

[belopot]

In this case, would you let me know how to use it?

[nzjony]

Which projection do you want the map to use?

Then use that projection to project the point, for example, if you want a globe, you would need to use the sphereProjection, see:

harp.gl/@here/harp-geoutils/lib/projection/SphereProjection.ts

Line 442 in 143b579

export const sphereProjection: Projection = new SphereProjection(EarthConstants.EQUATORIAL_RADIUS);

It is exported, so you just need to include it in your code and sphereProjection.projectPoint(....)

[belopot]

Now I'm going to add a 3D object on "A" position

GeoCoordinates of "A" is following as :
const InitCoordinates = new GeoCoordinates(-33.9034, 151.0066)

My code is following as:

cube : 3D object of three.js

What projection should I use for it?

[nzjony]

@belopot , that won't work. See: https://www.harp.gl/docs/master/examples/#threejs_add-object.html

You need to attach objects using mapAnchors.

[belopot]

I ever used it. I wanted to get the solution above

[belopot]

When I picked a point of map with mouse cursor, is it possible that we get the lat&long of the point?

[nzjony]

@belopot , see: https://www.harp.gl/docs/master/examples/codebrowser.html?src=src%2Fthreejs_add-object.ts

Search for: const geoPosition = mapView.getGeoCoordinatesAt(event.pageX, event.pageY);

[nzjony]

I ever used it. I wanted to get the solution above

This won't work, because we use a camera which is centred at 0,0,0 to increase precision, and all objects are moved relative to this position. If you want to do something specific, let me know why mapAnchors won't work.