Global scene parameters

The global scene parameters enable you to customize the way your scene is going to be generated globally (meaning these parameters apply to NDunes documents regardless of what OSM class they might be in initially).

The scene parameters are initialized by the Blueprint template. If you change your blueprint template, all your global scene parameters will be resetted to the stylesheet's values. So make sure you setup your blueprint document in the correct order : first input data, then customization.

Scene parameters

• Scene name : The name of the scene document that will be generated. It will also be the name of the city and network generated documents.
• Set generated scene as current : If checked, the generated scene will become the current scene right after the generation if finished. If unchecked, the scene document will be generated, but to display it you will need to drag and drop it from the scene treeview to the viewport, to make the generated scene current.

Terrain parameters

• Terrain style : A terrain document that has two possible behaviors.

1) You're generating the elevation using ASC files : the primary soil of the terrain document will be replaced by the generated ASC primary soil. All secondary soils in this "Terrain Style" will be applied on top of your generated elevation. The terrain document must be setup with secondary soils using the slopes and not the masks, because the generated ASC primary soil will not have masks setup. Ready-to-use terrain styles are downloadable from our store.

2) You're not using ASC files : this terrain style will be used "as is", as an artistic terrain, keeping its primary soil elevation. Artistic terrain can also be downloaded from our store.

• Terrain resolution (ASC only): The texture resolution in pixels of the ASC generated primary soil. It will impact the quality and generation time of the generated color, flow and densities textures of the primary soil.

• Compute AO (ASC only): Check to compute ambiant occlusion on the ASC generated primary soil during scene generation, uncheck to skip this step.

Vegetation parameters

• Outskirts biome : The biome document that will spawn in the "outskirts" of the generated scene. The outskirts are everywhere that is not inside an OSM land use area or a garden. This outskirt biome will not spawn in the land use / decal areas that do not have a specific biome defined : instead, no vegetation at all will spawn in these decal areas.

Fields generation

In OSM, farmland areas can often be defined as one single huge area, even though several separate fields actually compose this area in reality. The following two parameters enable you to automatically generate realistic fields in land use areas of type "farmland" or "farmyard", by subdividing the OSM area into smaller areas with straight contours.

• Farmland subdivide area (Ha) : The maximal area in Ha of one field. If the availiable area is bigger than this value, it will be subdivided. The smaller this parameter is, the smaller the fields are going to be (so there will be more fields to still fill the entire land use area).

• Farmland subdivide area variation (%) : The size variation between the fields. With a small value for area variation, the fields will all have roughly the same size. With a big value, you will have very small fields as well as very big ones.

Networks parameters

• Max control points distance (m) : The maximum distance between two gizmo control points on the network roads. Be aware that the more control points you ask for, the longer the network generation will take.
• Force flat roads: Check to force the generation of regular flat roads even in case of bridges.
• Generate parking spots: Check to automatically generate parking spots alongside roads when there is enough space. This option requires that you generate the sidewalks as well, which itself requires a cadastre file, city and network generation. Generated parking spots will pop when the algorithm decides the required conditions are met.

City parameters

If you chose to generate gardens using the cadastre file, you will specify a Garden Biome and a Fence Template for some of your buildings, see Customization of classes. The following two parameters let you decide how many hedges and fences you want to generate overall.

• Garden hedges coverage (%) : Percentage of generated gardens that will have a hedge. If 100%, all the gardens will have an hedge (provided all the specified garden biomes have hedge bushes).
• Garden fences coverage (%) : Percentage of generated gardens that will have a fence. If 100%, all the gardens will have an fence (provided you have specified at least one correct fence template for the OSM category).

Input data

Customization of classes