3D Roller-coaster Modelling

Why 3D Modelling is used

Introduction

3D Modelling involves developing a mathematical representation of any 3D surface of an object, with the product being a 3D model. All of which is created with specialized software. Models may be created automatically or manually.
Above is an example of a roller-coaster that has been designed on 3D modelling software. Imagine how hard it would be to draw. Also with 3D modelling it is way easier to change something.