convert world point to screen 2D point using specific camera

[Hartha]

HI,

How to convert  world point to screen 2D point using specific camera, 

I'm stuck and this is my try
 

https://www.babylonjs-playground.com/#25RB80#3

 

[jellix]

Hi,

have a look at https://www.babylonjs.com/demos/dragndrop 

Here you can see how the cursors position (2D) is transformed into a 3d-vector.

Maybe it helps?

[Hartha]

Thanks @jellix for your answer, but I need to convert 3D-vector to 2D position,

I found this way to do that :

 let p = BABYLON.Vector3.Project(vector, Identity, scene.getTransformMatrix(),
                    camera.viewport.toGlobal(engine.getRenderWidth(), engine.getRenderHeight()));

 

But I don't know how to modify it to convert the vector according to specific camera, I tried to change the camera view port but it dose not change anything as shown in the playground.

if anyone can explain the parameters it will be a good help, Thanks.

[GameMonetize]

Hello to take in account a specific camera you can just use this:

let p = BABYLON.Vector3.Project(vector, Identity, camera.getViewMatrix().multiply(camera.getProjectionMatrix()),
                    camera.viewport.toGlobal(engine.getRenderWidth(), engine.getRenderHeight()));

 

[Hartha]

Ok it works, Thank you Deltakosh