concerningAngleBuildingCheck.md

AcuteAngleBuildingCheck

Description

This check attempts to flag building who have angles between 80 and 89.9 degrees or between 90.1 and 100 degrees that need to be squared.

Configurables

angles:

• minLowAngleDiff: minimum angle difference between two building segments below 90 degrees.
• maxLowAngleDiff: maximum angle difference between two building segments below 90 degrees.
• minHighAngleDiff: minimum angle difference between two building segments above 90 degrees.
• maxHighAngleDiff: maximum angle difference between two building segments above 90 degrees.

angleCounts:

• min: minimum amount of nodes the building can have.
• max: maximum amount of nodes the building can have.

Live Examples

Building needs to have angles squared

1. The way id:791199437 needs to have its angle squared.

Code Review

This check evaluates Relations and Areas, it attempts to find buildings that have acute angles.

Validating the Object

We first validate that the incoming object:

• Is an area or relation AND is a building.

or

• Is part of a building.

Flagging the Edge

• Iterate through all Area/Relation based polygons associated with a building and check each angle.

To learn more about the code, please look at the comments in the source code for the check.
ConcerningAngleBuildingCheck.java