The bild file format is a simple format for displaying geometry in Chimera. The bild writer supports points, spheres, cyliners, and segments.
You are probably better off using the IMP::display::ChimeraWriter unless you want a human-readable file. ChimeraWriter supports better interactivity and more types of geometry.

Public Member Functions | |
| BildWriter (TextOutput of) | |
| virtual std::string | get_type_name () const |
| virtual ::IMP::VersionInfo | get_version_info () const |
Protected Member Functions | |
| virtual void | on_close () |
| virtual void | on_open () |
| bool | process (CylinderGeometry *g, Color color, std::string name) |
| bool | process (SphereGeometry *g, Color color, std::string name) |
| bool | process (TriangleGeometry *g, Color color, std::string name) |
| bool | process (PolygonGeometry *g, Color color, std::string name) |
| bool | process (SegmentGeometry *g, Color color, std::string name) |
| bool | process (PointGeometry *g, Color color, std::string name) |
| void | process (Color color) |