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Screen to world


Numa
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Hi there, 

I believe that's how you go from world to screen coordinates:

var screenPoint = BABYLON.Vector3.Project(worldPoint, 
            BABYLON.Matrix.Identity(), 
            scene.getTransformMatrix(), 
            camera.viewport.toGlobal(engine));

To go from screen to world I found the Unproject function, is there any example of how to use it? And do those functions take the camera radius into account?

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Here is an example of getting the 3D position of your scene from where you click your mouse on the canvas area. Hope it helps.

canvas.addEventListener("pointerdown", function (evt) {
    
    var pickResult = scene.pick(evt.clientX, evt.clientY, function (mesh) {
        return mesh;
    });
    
    if (pickResult.hit) {
        console.debug("3D position", pickResult.pickedPoint);
    }
    
}, false);

 

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It looks like sprites don't get hit by rays?

(open console to see logs)

http://www.babylonjs-playground.com/#EVYAT

 

edit: I found pickSprite but it doesn't return the hit point hehe. 

 

All I want to do is draw a line from a point on a sprite to the center of the scene. How do I get that point on the sprite converted to the 3d world? I've got a feeling I'm missing something really obvious.

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