Managing Models

Models are IFC files and terrain data that are visualized in projects.

Upload a Model

1. Open a project
2. Click "Upload" or drag files via Drag & Drop
3. Select one or more files
4. Conversion starts automatically

Multiple Files at Once

You can upload multiple files at once:

• Select multiple files in the file dialog (Ctrl+Click)
• Or drag multiple files via Drag & Drop into the upload area
• Upload progress is shown individually for each file
• IFC models and terrain data can be uploaded together

Supported Formats

BIM Models:

• IFC2x3 - Fully supported
• IFC4 - Fully supported
• IFC4x3 - Experimental
• CityJSON (.json) - City models
• CityGML (.gml, .xml) - City models

Terrain/DTM:

• GeoTIFF (.tif, .tiff) - Digital terrain models

Conversion Process

After upload, the IFC file is automatically converted:

1. Upload - File is transferred to the server
2. Validation - IFC structure is checked
3. Conversion - IFC → XKT (web-optimized format)
4. Ready - Model can be loaded

Progress is shown in the model list.

Upload Terrain/DTM

GeoTIFF files are displayed as 3D terrain models:

1. Upload a .tif or .tiff file
2. A preview with metadata is shown:
   • Resolution (Width × Height)
   • Coordinate system (CRS)
   • Elevation range (min/max)
   • Estimated triangles
3. Optional: Enable coordinate transformation
4. Click "Upload"

Automatic Decimation

Large terrain models are automatically decimated:

• Models over 200,000 triangles are simplified
• Resolution is proportionally reduced
• A warning shows the original and reduced size

Large DTMs

For very large GeoTIFF files (>1M triangles), a performant representation is automatically generated. Visual quality is preserved.

Load/Unload Model

Activate

Click the checkbox next to the model name to load it in the viewer.

During loading, a spinner is displayed. The checkbox is only enabled once the model is fully loaded.

Deactivate

Uncheck the box to unload the model from the viewer.

Loading Status

The checkbox status always reflects the actual state in the viewer. If a model could not be loaded for any reason, the checkbox remains unchecked.

Multiple Models

You can load multiple models simultaneously, e.g., Architecture + MEP + Structure.

Model Settings

Rename

1. Right-click on the model
2. "Rename"
3. Enter a new name

Delete

1. Right-click on the model
2. "Delete"
3. Confirm

Links

When deleting a model, all links to cost positions are deleted. The cost positions themselves are preserved.

Model Organization

Move Models to Folders

You can move models via drag & drop into folders:

1. Click and hold a model
2. Drag it onto a folder (e.g., "Architecture", "MEP")
3. The folder will be highlighted
4. Release to move the model into the folder
5. The folder expands automatically

Create Folders

Folders are based on the Folder-Name properties of models. You can use any folder names (e.g., "Architecture", "Structure", "MEP").

Sort Models Within a Folder

1. Click and hold a model
2. Drag it over another model in the same folder
3. A blue line shows the insertion position (above or below)
4. Release to save the order