This is due to the fact that your graphics card is specially designed to render triangles, and lots of them. When creating 3D models there are some things to keep in mind to make the model usable within Agency9 OpenCities Planner: SurfacesĪll surfaces should be created from triangles. Lookup the formats your software supports and maybe export to a format that can be imported in one of the tools mentioned above. Autodesk Maya, Autodesk 3D Studio Max, Trimble Sketchup or Safe Software FME has support to read a broad range of different 3D file formats and can be used to export to COLLADA. If your tool doesn’t support the COLLADA or KMZ file format it might be possible to export to COLLADA by using a third party tool. If your tool doesn’t support COLLADA or KMZ

This format is not supported by Agency9 3DMaps or Agency9 OpenCities Planner. dae files and might also contain one or more. When unzipped, the created folder should contain one. zip and then unzipped with WinZip or WinRar. To examine a KMZ file the file ending can be renamed to. KMZĪ KMZ file is a zip compressed file containing a KML file, one or more COLLADA files and/or one or more texture files. Sketchup is free to download and has good support for COLLADA. If you want to examine the content of a COLLADA file it can be opened in for example Trimble Sketchup. The file ending for a COLLADA file is often. Today COLLADA is supported by several major 3D and CAD applications and tools. The specification is defined by Khronos Group and is free and open for all to implement. All textures must be in JPEG or PNG formatĬOLLADA is an XML based data exchange format for 3D objects.All surfaces must be created from triangles.

All models must be in COLLADA 1.4.1 or KMZ file format with UTF-8 encoding.

Below follows a compilation on basic requirements and tips and tricks for how to create and/or prepare an existing model for use with Agency9 OpenCities Planner. It is desirable to create models that are small in disk size so that users with a slow Internet connection still can view the material without waiting.īy optimizing for these factors it is possible to create a model that works for a broad range of users in a heterogeneous computer environment. The loading time affects the user experience and determines the time it takes for a user to get a final picture of the current view. A models size on disk determines how fast the model will load over the network.

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