How Can I Check that entity Box overlap with terrain and 3D tile Building?

Gwondori · August 17, 2021, 3:13am

For Geofecning I have to check the Entity Box Overlap Others

I made a 3D Grid on cesium and have to set as Geofence if the Box overlap others

so I find an Library but I don’t sure I can use this.

Esri/terraformer/blob/master/docs/core.md

# Terraformer Core

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## Terraformer.Primitive

Terraformer Primitives are JavaScript objects that map directly to their GeoJSON couterparts. Converting a GeoJSON object into a Terraformer Primitive will allow you use convenience methods like `point.within(polygon)`.

Every `Primitive` inherits from the `Terraformer.Primitive` base class, thus all other Primitives share the `Terraformer.Primitive` methods.

There is a Primitive for every type of GeoJSON object, plus a `Circle` Primitive which represents a circle as a polygon.

### Constructor

You create a new `Terraformer.Primitive` object by passing it a valid [GeoJSON Object](./glossary.md#geojson). This will return a `Terraformer.Primitive` with the same type as your GeoJSON object.

```js
var point = new Terraformer.Primitive({
  type: "Point",
  coordinates: [1, 2],

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sam.rothstein · August 17, 2021, 5:45pm

@Gwondori

Thank you for sharing this information. The library that you referenced seems like a great resource. However, I am unclear how you intend to use it. Could you please provide a little bit more information on your use case?

-Sam

Gwondori · August 19, 2021, 1:44am

I want detect something inside of 3D grid box entity, so I think I can use terraformer’s intersects method but that seems to use only in 2D polygon. so I ruined everything.

sam.rothstein · August 19, 2021, 2:11pm

@Gwondori

The terraformer idea seems promising to me. Could you possibly overlay your 3D grid with 2D polygons? This would allow you to have a 3D grid and detect intersections accurately. Let me know what you think! I would love to see a demo of what you have so far

-Sam

Gwondori · August 20, 2021, 2:16am

In now time I just made 3D Box Entity Grid and Geojson buildings only, I found so many references but I can’t get a Idea, 2D intersect are has some references but 3D is not.

sam.rothstein · August 20, 2021, 2:18pm

@Gwondori

Thank you for sharing this! This looks awesome Do you have a sandcastle demo that you can show the community?

-Sam