How to change height of 3DModels?

CesiumJS
1

Hi everyone, I am trying to change the height of the 3D Model layer in this example but it doesn’t seem to work, I don’t know where I am wrong, someone help me
(Cesium Sandcastle)

2

Hello, welcome to the community!
The function fromCartesian takes a Cartesian3. That means that the input argument needs to be an instance of a Cartesian3. I see you have a point as an array. You can create a Cartesian3 from it by using the function Cartesian3.fromArray.

So instead of

const cartographic = Cesium.Cartographic.fromCartesian(
      tileset.boundingSphere.center = [1215023.915542779,
-4736356.058240178, 4081642.5349159874]
    );

We can do

const cartographic = Cesium.Cartographic.fromCartesian(
      Cesium.Cartesian3.fromArray([1215023.915542779,
-4736356.058240178, 4081642.5349159874])
    );

and it should work as you expect.

1 Like
3

sorry friend i copied the wrong link :frowning: can you help me check in this example, i am trying cesium Cesium Sandcastle

4

it seems the way 3Dmodel works is different from 3DSettile :thinking:

5

upppp

6

You can use Matrix4.multiplyByPoint to multiply x,y,z of cartesian3 as given below:

Cesium.knockout
  .getObservable(viewModel, "height")
  .subscribe(function (height) {
    height = Number(height);
    if (isNaN(height)) {
      return;
    }
console.log(entity,"entity");
    const cartographic = Cesium.Cartographic.fromCartesian(
     entity._position._value 
    );
    const surface = Cesium.Cartesian3.fromRadians(
      cartographic.longitude,
      cartographic.latitude,
      0.0
    );
    var newHpos = Cesium.Matrix4.multiplyByPoint(Cesium.Transforms.eastNorthUpToFixedFrame(surface),
                new Cesium.Cartesian3(0, 0, height), new Cesium.Cartesian3());
    entity.position.setValue(newHpos);
  });

Here is the working sandcastle example.

  • Regards
1 Like
7

fantastic, thank you very much, it’s so helpful

8

please help me with the case of rotating a 3Dtileset