CSG Modeling System

Basic System

#include "csg.h"

main(int argc, char **argv)
{
  CsgNode *t;
  if((t = csg_parse()) == NULL)
    exit(-1);
  else
    csg_write(t, stdout);
  exit(0);
}

Input-Output

(s{1.1 -.3 .5 0} & (s{.1 -3.01 0 5} | s{1 0 0 5}))

scene { csgobj = csg_inter { 
		csg_prim{sphere{radius = 0.1, center = {0, 0, 5}}},
		csg_union { csg_prim{sphere{radius = 0.1, center = {0, 0, 5}}},
			csg_prim{sphere{radius = 0.1, center = {0, 0, 5}}}
			}
		}
};

Extension Options

• Include visualization as 3 orthogonal views (XYZ) and an auxiliary view.

• Include transformations (operator "csg_transform"). The user should be able to group primitives and transform them.

• Include interactive capabilities. The user should be able to select and move individual primitives or groups of primitives.

• Include csg-tree display and manipulation. The user should be able to create and edit the csg-tree graphically.

• Include capabilities to compute object properties, such as volume, etc.

• Include support for a command language integrated with the interactive operations.