Water Connection Generator and I3S: Difference between pages

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The Water Connection Generator enables users to generate (and remove) underground [[buildings]] such as [[Culvert_(Water_Overlay)|culverts]] using a set of parameters. This generator can be used for example when creating a project with the [[Water Overlay]], but a dataset with all culverts is not available.
3D models in different formats, such as BIM data or a SketchUp model, can be converted to the I3S format with a SLPK file. See the text below to learn more about this.
The parameters are explained below under [[#Advanced Options|Advanced Options]].


[[File:Water_connection_generator.PNG|The Water Connection Generator panel]]
==What is I3S?==
==Function selection==
The I3S (Indexed 3D Scene Layer Specification) is a format for large 3D Geo datasets. The specification is especially designed for streaming large 3D data over the web. The specification originates from Esri and was adopted as a Community Standard by the OGC (Open Geospatial Consortium) in 2017. An I3S dataset is also called a Scene Layer.
[[File:Water_connection_generator_function.png|thumb|left|200px|Select the function and the location of the to be generated connections]]
<br clear=all>
Choose the type of function for the generated [[Construction|constructions]]. <br>
Select in which [[Neighborhood| neighborhood]] constructions should be generated or choose the entire project area.


==Advanced Options==
==What is an SLPK?==
[[File:Water_connection_generator_advanced.png|thumb|right|200px|The advanced options]]
A Scene Layer Package (SLPK) is a file format for the storage/exchange of one I3S layer.


===Mininimum and maximum length===
Both the minimum and maximum length in meters can be provided to set the length of the created water connections and to limit the amount of created connections. The length is measured as the closest points between two water bodies.


===Large road threshold===
==See also==
A road is considered large (and therefore impassable by a water connection) when the road's size is larger than the set threshold value. This parameter can be used to prevent water connections crossing large roads. The large road threshold is provided as a surface size in m2. The surface size of each road polygon is then checked against the threshold value.
* [[How_to_import_i3s_scene_layer_in_new_project|How to create a new project with existing I3S data]]
* [[How_to_prepare_a_3D_plan_for_importing|How to prepare a 3D plan before importing]]
* [[How_to_create_a_SLPK_file|How to create a SLPK file from other 3D data formats]]
* [[How_to_import_a_SLKP_file|How to import a SLKP file into the {{software}}]]


=== Large road straight===
{{Template:GeoDataOverview}}
The large road straight parameter is used to measure if waterways are perpendicular to each other. It is measured by extending the placed water connection by x meters and if it is still in a waterway or body, then it is perpendicular and accepted. For parallel waterways, this check will not create a water connection when the defined x is sufficiently large.
<ul>
<li style = "display:inline-block">[[File:large_straight.jpeg|400px|thumb|Culverts generated with a 30 meter large road straight setting. Notice that in the case of the waterways separated by large roads, culverts are only generated when a waterway is perpendicular to each other.]]</li>
<li style = "display:inline-block">[[File:small_straight.jpeg|400px|thumb|Culverts generated with a less restrictive, 5 meter large road straight setting.]]</li>
</ul>
 
=== Maximum height difference ===
The maximum height difference in meters that is allowed for the water connection te be generated. The height difference is measured on the surface where the water connection would be. This parameter can therefore be used to detect levees on the surface and prevent water connections through them. Additionally, this same parameter can be used to prevent connections being created for water ways that have very different water levels.
<ul>
<li style = "display:inline-block">[[File:water_connection_max_height.jpg|400px|thumb|Two waterways with a levee inbetween. A stricter max height difference can prevent the creation of an unrealistic water connection.]]</li>
<li style = "display:inline-block">[[File:water_connection_height_difference.jpeg|400px|thumb|Two waterways, of which one is situated 5 meters lower than the other, where there typically would be no water connection.]]</li>
</ul>
 
=== Width ===
The generated water construction will have its width set to this value when generated. The width is provided in meters. For [[Culvert_(Water_Overlay)|culverts]], the width will be the [[Culvert_diameter_(Water_Overlay)|culvert diameter]].
 
=== Ignore upstream ===
Sometimes multiple water connections can be created for the same water bodies. The ignore upstream parameter can be used to remove connections of which its end point differ by more than the indicated amount in meters. It is somewhat  similar to the parameter '''Maximum height difference''', but more restrictive in its application.
 
=== Include water bodies ===
When selected, both [[Terrain_Type#Surface|waterways]] and [[Terrain_Type#Surface|water bodies]] are taken into account as water terrains where water connections to and from are generated. When not selected, only [[Terrain_Type#Surface|waterways]] are taken into account.
 
==Reset and remove==
[[File:Water_connection_generator_reset.png|thumb|right|200px|Reset and remove buttons]]
 
* The '''Reset to defaults''' action reverts the values of the advanced options back to the default settings.
* The '''Remove generated''' action removes all generated constructions of the selected function. Note that this also removes not generated constructions of this function. For example constructions which were imported or manually drawn.
<br clear=all>
 
==See also==
* [[File:YoutubeLogo1.jpg|thumb|left|link=https://youtu.be/Ac2yAKAh9aY|Editing the Water Connection Generator (Dutch Only)]]
<br clear = all>
* [[Culvert (Water_Overlay)]]
* [[Hydraulic structures (Water_Overlay)]]

Revision as of 14:13, 15 March 2021

3D models in different formats, such as BIM data or a SketchUp model, can be converted to the I3S format with a SLPK file. See the text below to learn more about this.

What is I3S?

The I3S (Indexed 3D Scene Layer Specification) is a format for large 3D Geo datasets. The specification is especially designed for streaming large 3D data over the web. The specification originates from Esri and was adopted as a Community Standard by the OGC (Open Geospatial Consortium) in 2017. An I3S dataset is also called a Scene Layer.

What is an SLPK?

A Scene Layer Package (SLPK) is a file format for the storage/exchange of one I3S layer.


See also