public BallApi CreateBall(Player player, IBallCreationPosition ballCreator, float radius, float mass)
{
// calculate mass and scale
var m = player.TableToWorld;
var localPos = ballCreator.GetBallCreationPosition(_table).ToUnityFloat3();
var localVel = ballCreator.GetBallCreationVelocity(_table).ToUnityFloat3();
localPos.z += radius;
//float4x4 model = player.TableToWorld * Matrix4x4.TRS(localPos, Quaternion.identity, new float3(radius));
var worldPos = m.MultiplyPoint(localPos);
var scale3 = new Vector3(
m.GetColumn(0).magnitude,
m.GetColumn(1).magnitude,
m.GetColumn(2).magnitude
);
var scale = (scale3.x + scale3.y + scale3.z) / 3.0f; // scale is only scale (without radiusfloat now, not vector.
var material = BallMaterial.CreateMaterial();
var mesh = GetSphereMesh();
// create ball entity
EngineProvider<IPhysicsEngine>.Get()
.BallCreate(mesh, material, worldPos, localPos, localVel, scale, mass, radius);
return null;
}