General Modeling Tips

The following tips may be useful when creating a model, or fixing meshing issues, in Examine3D:

  • The ground surface should be identified as a surface using the Locate Surface option in the Object Tools menu.  See Tutorial 7 (pg 167) for more information.
  • Always run the Object Check (in the Toolbox menu of the Modeler), which will find problems with the mesh.
  • In Examine3D, the mesh edges must all be edge-connected, meaning that all edges must be shared by two elements and two elements only.  To get the edges to properly line up, you have to build the polylines correctly.  See Tutorial 4 (pg 145) for details.
  • In order to skin polylines, the polylines have to have the same number of vertices.  In addition, the vertices have to be ordered such that the first vertex on one polyline attaches to the first vertex on the other polyline, the second to the second, and so on.
  • If your model is particularly complex, you may find it easier to use a program like Rhino to build your geometry.  See "How to Create a Model in Rhinoceros 4.0 and Import it into Examine3D" and Tutorial 11 for details.
  • The most common issue with mining geometry is that the coordinates are usually huge.  You need to transform the coordinates closer to the origin as Examine3D uses only 6 digits of precision.
  • You can bring in multiple polylines and skin them within Examine3D to form excavations.
  • Examine3D can import AutoCAD DXF files containing closed 3D objects formed with 3D faces that are all properly edge connected (not leaky).