# Features

**Interactive, Textual User-Interface (TUI)**

**Fast Ray-Tracing Engine**

**_Software Laser Engine-Device (SLED)_**

**Pure Constructive Solid Geometry (CSG)**

**11 Primitives**

**Simple & Compound Objects**

**Shapes/Color/Lighting/Shadows**

**Phong Shading**

**Transformations**

**Transparency/Reflection**

**Hierarchical Mediums**

**Platonic Solids (Convex Polyhedra)**

**Checkerboards**

**3D Cartesian Coordinate System (xyz)**

**Bitmap Output File Format (.BMP)**

**Ray-Tracing Interface Input File Format (.RTI)**

**User’s Guide, 3rd Edition (47 pages)**

**Laser Ray Coordinates Readout**

**Elapsed Time Readout**