Problem in "transformationMatrix" When using "geometry-templates"

[HibaDoi]

I'm struggling with a problem while working with CityJSON. I'm using a geometry template, but I encountered a very unusual issue. I tried using the following template( the same template in here::
{
"type": "CityJSON",
"version": "1.1",
"CityObjects": {
"mybigtree": {
"type": "SolitaryVegetationObject",
"attributes": {
"size": "very big",
"shape": "kind of a box"
},
"geometry": [
{
"type": "GeometryInstance",
"template": 0,
"boundaries": [0],
"transformationMatrix": [1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]
}
]
}
},
"vertices": [[174000,875000,0]],
"geometry-templates": {
"vertices-templates": [
[0,0,5],[10,0,5],[10,10,5],[0,10,5],[0,0,15],[10,0,15],[10,10,15],[0,10,15]
],
"templates": [
{
"boundaries": [[[0,3,2,1]],[[4,5,6,7]],[[0,1,5,4]],[[1,2,6,5]],[[2,3,7,6]],[[0,4,7,3]]],
"lod": "1",
"type": "MultiSurface"
}
]
},
"transform": {
"scale": [0.001,0.001,0.001],
"translate": [85000,446000,0]
},
"metadata": {
"referenceSystem": "https://www.opengis.net/def/crs/EPSG/0/7415"
}
}

However, when I change the transformationMatrix from
"transformationMatrix": [1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]
to:
"transformationMatrix": [0,1,0,0,-1,0,0,0,0,0,1,0,0,0,0,1]

the entire position of the object changes, which seems absurd because I’m only applying a rotation.

i display the cityjson in piero here

[hugoledoux]

but the transformation matrix is not only doing a rotation, see the matrices there: https://www.cityjson.org/dev/geom-templates/

[HibaDoi]

yess, i applied here only the rotation part i did not add translation as you see the last column is 0 0 0 1.

[HibaDoi]

i just applied a 90 ° rotation around the Z axis .

[clausnagel]

The points are rotated about the origin (0,0,0). Try and move the origin to the center of your template geometry (at least on the xy-plane if you want to rotate around the z-axis).

[HibaDoi]

I hanged the vertices-templates to that:"geometry-templates"
:{"vertices-templates":[[ -5.00 , -5.00 , -5],
[ 5.0 , -5.00 , -5],
[ 5.0 , 5.0 , -5],
[ -5.00 , 5.0 , -5],
[ -5.00 , -5.00 , 5],
[ 5.0 , -5.00 , 5],
[ 5.0 , 5.0 , 5],
[ -5.00 , 5.0 , 5]]

the center of this template is 0 0 0 but i have the same problem with the coordinate.

[clausnagel]

Maybe a software issue of your viewer? Works for me using the KITModelViewer. I used a 45° rotation for visibility reasons.

[HibaDoi]

Intersting ,I think the problem is indeed in the viewer