# What is CGA?

Procedural Modeling

##### Post Metadata
- Posted at: almost 8 years ago
- Net upvotes: 1


## Comments
### Comment 1

CGA (Computer Generated Architecture) is a unique programming language specified to generate architectural 3D content. The idea of grammar-based modeling is to define procedural rules, or CGA rules in CityEngine, that iteratively refine a design by creating more and more detail.

##### Comment Metadata
- Posted at: almost 8 years ago
- Author title: Product Marketing at Esri




## Related Product
[ArcGIS CityEngine](https://www.g2.com/products/arcgis-cityengine/reviews)

## Related Category
[Urban Planning and Design](https://www.g2.com/categories/urban-planning-and-design)

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