1. A computer implemented method comprising: receiving an object representative of a new element of a scene to be simulated; providing a probabilistic prediction of coordinates of the new element in the scene; placing the new element in the scene as a function of rules for combining objects in the scene; and providing a visual representation of the simulated scene including the new element; wherein the combining rules for placing objects in the scene include leaving an existing voxel representing an element untouched, using an incoming voxel of the new element, and using a combination of both; and wherein the combination rules comprise spatio-probabilistic model probabilities rules.