Algorithm 3 Camera location

1:$step\_size\leftarrow 2\pi /(1-n)$ 2:for i < n do 3:  $\theta \leftarrow random(i,i+1)$        ▹ Random float in the range of [i, i+1] 4:  $x\leftarrow cos(step\_size\times \theta )\times r$ 5:  $y\leftarrow sin(step\_size\times \theta )\times r$ 6:  $z\leftarrow random(z_{min},z_{max})$ 7:end for