Overlay

An overlay is a layer drawn over the 3D world to illustrate different properties. They do not contain all the information of a given visualization, but serve as a supplement. By adding these properties onto the same view, the additional information can immediately be made understandable in the same way. A reason to split information off into other layers in this fashion can be to avoid overwhelming a user with too much information.

How do overlays relate to the Tygron Platform interface

Overlays are implemented in the Tygron Platform as part of the interface. Properties such as ownership and zoning are important pieces of information to the user, but would be very overwhelming to display at all times. Instead, a user can activate on overlay to make these pieces of information visible. In principle, all spatially varied information is accessible as an overlay.

How to access overlays in a project

File:Overlays-Icons.jpg

How to access overlays

Overlays available to stakeholders appear as buttons on the right side of the interface. Clicking on any of these buttons will switch the view to the specific overlay. Clicking on the "City" overlay will switch the view back to default. Some overlays are automatically added when a project is created. Some overlays are closely related to indicators, such as Heatstress and Livability.

Parent Overlay

Overlays can be combined into collections of a Parent Overlay with one or multiple Child Overlays. This allows for a large amount of Overlays to be organized into an easier-to-use hierarchy. Hovering over any of the Overlays in the Overlay menu will show additional icons for the Child Overlays of that Overlay, if any exist.

Every Overlay is considered a Parent Overlay, unless it has a Parent Overlay set, in which case it becomes a Child Overlay of that Parent Overlay. Overlays with Child Overlays cannot be a Child Overlay to another Overlay. Result Child Type Overlays are always Child Overlays of other Overlays.

When a Parent Overlay is removed, it's Child Overlays are not removed. Instead, they simply have no Parent Overlay set anymore.

List of available Overlays

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Default Overlays

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How-to's

Add and remove an overlay

Notes

The following overlays are available by default when creating a new project: City, Neighborhoods, Ownership and Zoning
Grid overlays have the ability to show the difference between the maquette and the original state. The difference visualization uses its own legend. The option to show the difference can be turned on or off per Grid Overlay.
Overlays can be given attributes. Some of these attributes are used by their calculation model.