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Place brick-built (UGC) property models at their saved position/rotation (#131)

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UGC LXFML brick transforms are relative to the model's own origin, but the
LDD viewer added the bricks straight to the scene and never applied the
model's properties_contents position/rotation, so the models ended up around
(0,0,0), far below the property ground plane. Properties with only
brick-built models showed just the green ground.

Build each LXFML into its own THREE.Group placed with the saved
position/quaternion (like pre-built models), load each file into a fresh
Scene, and target the single-model camera at the placed model.

Co-authored-by: bob-g-code <346622190+bob-g-code@users.noreply.github.com>
This commit is contained in:
Bob G
2026-10-27 13:46:14 -07:00
committed by GitHub
parent 6b3a0902c8
commit 1c2f07025c
1 changed files with 30 additions and 8 deletions
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38
app/templates/ldd/ldd.html.j2
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@@ -533,11 +533,19 @@
LoadScene(filename){
if(this.database.initok){
// Each LXFML file is its own model with its own placement,
// so start from a fresh scene instead of accumulating bricks
this.scene = new Scene()
this.scene.AddScene(filename)
}
}
Export(filename){
// Builds the meshes for the currently loaded LXFML scene.
// The brick transforms in a UGC LXFML are relative to the model's own origin,
// so the meshes are collected into a group which is then placed in the world
// using the position/rotation stored for the model (properties_contents).
Export(filename, positions = []){
let modelGroup = new THREE.Group()
let allMaterials = new Materials(this.database.filelist['Materials.xml'].read())
let invert = new Matrix3D()
//invert.n33 = -1 //uncomment to invert the Z-Axis
@@ -717,15 +725,26 @@
let mesh = new THREE.Mesh(geometry, materials);
mesh.matrixAutoUpdate = false
mesh.matrix = m
{% if not center %}
brick_pos.setFromMatrixPosition( m );
{% endif %}
scene.add(mesh);
modelGroup.add(mesh);
// let vnh = new VertexNormalsHelper( mesh, 5 );
// scene.add( vnh );
}
}
}
if (positions.length === 0) {
positions = [{x: 0, y: 0, z: 0, rx: 0, ry: 0, rz: 0, rw: 1}]
}
for (const [j, pos] of positions.entries()) {
let model = (j === 0) ? modelGroup : modelGroup.clone()
model.position.set(pos.x, pos.y, pos.z)
model.quaternion.set(pos.rx, pos.ry, pos.rz, pos.rw)
model.updateMatrixWorld(true)
scene.add(model)
{% if not center %}
new THREE.Box3().setFromObject(model).getCenter(brick_pos)
{% endif %}
}
}
}
@@ -1036,7 +1055,10 @@
let lxfml_file_list = [
{% for model in content %}
{% if model.lot == 14 %}
"{{url_for('properties.get_model', id=model.id, file_format='lxfml', lod=lod)}}"{{ ", " if not loop.last else "" }}
{
"url": "{{url_for('properties.get_model', id=model.id, file_format='lxfml', lod=lod)}}",
"pos": {{ model.pos|tojson }}
},
{% endif %}
{% endfor %}
]
@@ -1047,9 +1069,9 @@
let converter = new Converter()
converter.LoadDBURL(ldddburl)
for (let i = 0; i < lxfml_file_list.length; i++) {
converter.LoadScene(lxfml_file_list[i])
converter.LoadScene(lxfml_file_list[i].url)
converter.Export('test.webgl', lxfml_file_list[i].pos)
}
converter.Export('test.webgl')
}
else {