#Cityengine street creation manuals

LetвЂ™s identify the other walls by makingВ them all the same red color. Some building were drawn in the same direction, while others were not. For a GIS Technician/Analyst, the direction in which a polygon is digitized is not important, only that the tabular data and geometryВ are as accurate as possible. This is EXTREMELY common in real world datasets. Notice how all the fronts are calculated but not necessarily in the correct direction. Since the New York City Footprint dataset is so massive, here are some other examples to illustrate how different directions of a digitized building can affect CityEngineвЂ™s results. The source is from one of New York CityвЂ™s Footprint shapefile. HereвЂ™s a building IвЂ™ve generated with only the front part of the building wall colored. DonвЂ™t be discouraged by this, it sounds harder than it is. This also means if you have a building, then you will have to add each floor and each side to create the building.

These represent the different sides of the building you create in CityEngine. So the Component function has the front, back, left, right, top, & bottom. Therefore, it can be more useful and sometimes necessary, to use cardinal directions or building facing streets. Simply put, CityEngine goes by how the building footprint was digitized. Wait! How does CityEngine know whatвЂ™s the front, back, etc.? I wonвЂ™t be covering these (at least for now) since I want to only cover the basics of the comp(f) function when it comes to structures. There are multiple ways to create the sides of buildings such as using cardinal directions ( North, South, East, West) as well as calculating what direction the building faces the street. There are numerous calculations that the comp(f) function can do, in this case we will stick to the most basic ones: front, back, left, right, top, & bottom. The Component (AKA comp(f)-) function allows the user to selectВ several different aspects of a created shape. These are important first steps when using CityEngine and it should be easier to understand the comp(f) functions IвЂ™m about to go over. So far, weвЂ™ve discussed the extruding of a building, linking attributes to buildings, and creating shapes using the вЂњextrudeвЂќ and вЂњroofвЂќ commands. I suspect this is one reason why there is a severe lack of CityEngine tutorials available.

#Cityengine street creation manuals

Mainly because itвЂ™s hard to explain without illustrating, and even then, IвЂ™ve still had to consult manuals and forums so that I can at least half-way explain it properly. The truth of the matter is that I have had this particular section in my draft bin for at least 6 months.

It motivates me to continue writing them and I certainly appreciate the shout out that CityEngine gave me on Facebook.Д«etween more than a few life changing events, I havenвЂ™t been able to be as diligent about continuing these tutorials like I should be.

Perhaps itвЂ™s selfish but I created these tutorials for my personal reference and I am so glad that this blog is being used by people.