[Papervision3D] random point in a sphere

[Romuald Quantin]

Hi,

 

Sorry for the basic questions but when I google it I only get distributing
point on a sphere, and it is not exactly what I want.

 

I'm testing line random drawing with the addNewLine property of the class
Line3D

 

I'm trying to get a random point IN a sphere, here my code in a circle:

 

Radius = 200;

var theta:Number = Math.random() * (Math.PI * 2);

x = Math.cos(theta) * (Math.sqrt(Math.random()) * Radius);

y = Math.sin(theta) * (Math.sqrt(Math.random()) * Radius);

 

If I want to apply it in a sphere, how do I calculate the z value?

 

Thanks

 

Romu

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