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- /* Copyright (c) 1986 Regents of the University of California */
-
- /* SCCSid "@(#)cone.h 2.1 11/12/91 LBL" */
-
- /*
- * cone.h - header file for cones (cones, cylinders, rings, cups, tubes).
- *
- * Storage of arguments in the cone structure is a little strange.
- * To save space, we use an index into the real arguments of the
- * object structure through ca. The indices are for the axis
- * endpoints and radii: p0, p1, r0 and r1.
- *
- * 2/12/86
- */
-
- typedef struct cone {
- FLOAT *ca; /* cone arguments (o->oargs.farg) */
- char p0, p1; /* indices for endpoints */
- char r0, r1; /* indices for radii */
- FVECT ad; /* axis direction vector */
- FLOAT al; /* axis length */
- FLOAT sl; /* side length */
- FLOAT (*tm)[4]; /* pointer to transformation matrix */
- } CONE;
-
- #define CO_R0(co) ((co)->ca[(co)->r0])
- #define CO_R1(co) ((co)->ca[(co)->r1])
- #define CO_P0(co) ((co)->ca+(co)->p0)
- #define CO_P1(co) ((co)->ca+(co)->p1)
-
- extern CONE *getcone();
-