you can define here the main properties of each building lot that will be used to create a building.
all these parameters define the height, the perimeter and the location of each lot. the parameters are then sent to the chosen building library for a lot, in charge of creating the building shapes inside the lot.(see the Buildings/Categories tab)

Object name

(default is Building or City depending on the building creation mode).
this parameter defines the building objects family name.


Min and Max define the number of floors interval for the lots. these parameters work with the building elevations data source.

Var is a random variation of the computed number of floors for a lot : 0 means no variation, 1 means a reduction from 0 to 100% of the 'step' number of floors.

  • Var can give elevation variations even if the source image is flat.
  • 'step' : when the floor interval is large, like from 1 to 100 floors, a stairway phenomena can occur with the kind of configuration below :

    note that the floor height are always the same here, 3 meters per floor. buildings goes from 1 to 100 floors, and Var is zero. to the right, the elevation map used is a material with a blend texture. the result :

    this is due to the red channel value that is used by the floor interval to compute the number of floors of a lot : the value range is from 0.1 to 1.0, 10 levels. therefore if the floor interval is 100, the step between 2 lot height is 10. below is the same configuration with Var 0.5, then 1 :


Floor Height

1stMin, Min and Max define the height interval of a building floor for each lot (in meters). if the interval is min 2.7 and max 3.5, it means you can obtain an 8 floors building with 3,5 meters/floor, higher than a 10 floors building with 2.7 meters/floor.
1stMin is a factor applied to the computed floor height of a lot to define the first floor height. this one is often bigger than the greater floors. 1 means the height will be the same, else it will be bigger in proportion.
a large floor height interval can also compensate the stairway phenomena described above.

Lot area

these parameters deal with the building lot dimensions, and not the ones of the building itself (which the libraries will car of) : these are the dimensions of the area that will be given to the chosen library.

H/W ratio

in the real world, on Earth, in 2010, the higher the building, the larger it is. this option avoids the creation of anorexic building lots, even if a very little minimum lenght has been configured for the sides of the lot. a value of 6 means that the minimum side lenght will be equal to its height divided by 6, IF this value is greater than the minimum side lenght.
enables this option.



Front and Yard lenght min/max define the lenght of the front and the yard sides of the lot. here fronts and yards can range from 15 to 25 meters.
Depth/sides lenght min/max do the same for the sides of the lot.


Balance of lots

building lots are created one by one in each block, anti-clockwise. if the block is small, the first lots are the biggest if Var is close to 1, but lots will be balanced is the Var is 0.5.



Lots Intervals minimum and maximum values in meters between each building lot.
sticked lots is a probability : if the Var is close to 1, lots will almost all be sticked together, else the interval is used.


Minimum side lenght

when a lot must avoid intersection with another lot, or when it adapts to a particular angle of the block, the generated lot can be quirky, with new and non parallel sides. in such cases, the script cannot create side with lenght lower than the Min value.


Building Layers

allows to define the Blender layers in which the buildings will be created.

Last Updated on Monday, 17 May 2010 12:39