Hi, I’m using the three-globe library to create an earth. I have things orbiting around the earth, and I want to position the globe towards the camera based on it’s current lat/lng position on page render. I’ve tried everything under the sun to try to convert the lat/lng to x,y,z coordinates, but th…

As I said: [image] PavelBoytchev: it all depends on the orientations of the global coordinate system and the globe. Here is a version with three-globe. The command for rotation is different, because the orientation is different (snapshot showing Tokyo, rotation is in lines 49-54): https://c…

/cc [Cinta] Threejs Globe, how to rotate to a specific lat/long? three.js, webgl-globe asked by Cinta on 07:43PM - 11 Oct 23 UTC

[image] prisoner849: /cc Hi, yes this is also my post, but I got no answer on stackoverflow so I thought I’d try my luck in this forum instead

function spericalCoordsToCartesianCoords(r, long, lat){ //lat from -PI/2 (southpole) to +PI/2 (northpole), 0 is equator //long from -PI to PI, 0 is greenwich const x = r * cos(lat) * cos(long); const y = r * cos(lat) * sin(long); const z = r * sin(lat); return {x, y, z}; } If y…

Thank you for the answer! I tried your suggestion but alas, it didn’t work. I think perhaps I’m setting the values wrong on the globe? Here is what I tried: var paris = { lat: 48.864716, lon: 2.349014 }; var parisPosition = spericalCoordsToCartesianCoords( Globe.getGlobeRadius(), paris…

Try to rotate globe’s geometry: geometry.rotateY(Math.PI * 0.5)

You have to pass radians instead of degrees. But if you prefer to pass degrees then you have to convert them to radians. function spericalCoordsToCartesianCoords(r, long, lat){ //deg to rad const rad = Math.PI / 180; //lat from -90 (S) to +90 (N), 0 is equator //long from -180 (W) to …

I see, thank you for clarifying! I’m pretty new at this. I tried this: function spericalCoordsToCartesianCoords ( r, lat, long ) { const x = r * Math.cos( lat ) * Math.cos( long ); const y = r * Math.cos( lat ) * Math.sin( long ); const z = r * Math.sin( lat ); return { x, y, z }; } //paris v…

Yes, I just read it, that’s where my paris coords came from. unfortunately the example did not help my case. As I dont need to place an object at a certain lat/lang, I need to twist the globe to center the lat lang towards the camera.

Ah, I have to correct my answer. [Screenshot_20231012_185350_Chrome] Our convention is a.) and not b.) This means z and y must be swapped. function spericalCoordsToCartesianCoords(r, long, lat){ //lat from -PI/2 (S) to +PI/2 (N), 0 is equator //long from -PI (W) to PI (E), 0 is greenwich …

Rotate globe using lat/long values

Questions

prisoner849 October 12, 2023, 12:40pm 9

The topic reminds me about another one: Azimuth, polar and radius from xyz - #7 by prisoner849

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Rotate globe using lat/long values

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