I will include the full rule file in the last post of the starter project, but for now I'll go through it in sections in more detail. I would advise that you make yourself familiar with theīasics of Rule-Based Modelling section of the Help (within CityEngine - if you have the software) if you are still are notĪware what the Scope, Geometry and Pivot attributes are and how operations are The starter project was a fun way to practise what I had learned and to try a few things to really get to grips with the software. These are fun but without coding my own rules I could never make CityEngine do what I wanted it to do. However, the syntax is unique but thankfully pretty simple to understand.īy now I had seen and played with a number of rule files that were within the tutorials and sales material from Esri. Yes, its a programming language so it has the same type of logic and structure as Python etc. I have been asked numerous times is it like such and such code. This allows the 3D environment artist to make use of the power of procedural modeling in CityEngine without have to leave the familiar Maya toolset. A CGA rule file is the code needed to string a list of operations together to create 3D content. Abstract CityEngine is a rule-based urban modeling software package. It provides a modifier node which enables the execution of CityEngine CGA rules within a Maya scene. At the very core of CityEngine is the shape grammar operations that take input 2D geometry and create 3D models.
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