73     cylinder *c;  in newcylinder()  local
75     c = (cylinder *)rt_getmem(sizeof(cylinder));  in newcylinder()
76     memset(c, 0, sizeof(cylinder));  in newcylinder()
77     c->methods = &cylinder_methods;  in newcylinder()
79     c->tex = (texture *)tex;  in newcylinder()
80     c->ctr = ctr;  in newcylinder()
81     c->axis = axis;  in newcylinder()
82     c->rad = rad;  in newcylinder()
83     return (object *)c;  in newcylinder()
135     vector a, b, c;  in cylinder_normal()  local
140     c = cyl->axis;  in cylinder_normal()
142     VNorm(&c);  in cylinder_normal()
144     VDOT(t, a, c);  in cylinder_normal()
146     b.x = c.x * t + cyl->ctr.x;  in cylinder_normal()
147     b.y = c.y * t + cyl->ctr.y;  in cylinder_normal()
148     b.z = c.z * t + cyl->ctr.z;  in cylinder_normal()
161     cylinder *c;  in newfcylinder()  local
163     c = (cylinder *)rt_getmem(sizeof(cylinder));  in newfcylinder()
164     memset(c, 0, sizeof(cylinder));  in newfcylinder()
165     c->methods = &fcylinder_methods;  in newfcylinder()
167     c->tex = (texture *)tex;  in newfcylinder()
168     c->ctr = ctr;  in newfcylinder()
169     c->axis = axis;  in newfcylinder()
170     c->rad = rad;  in newfcylinder()
172     return (object *)c;  in newfcylinder()
176     cylinder *c = (cylinder *)obj;  in fcylinder_bbox()  local
179     mintmp.x = c->ctr.x;  in fcylinder_bbox()
180     mintmp.y = c->ctr.y;  in fcylinder_bbox()
181     mintmp.z = c->ctr.z;  in fcylinder_bbox()
182     maxtmp.x = c->ctr.x + c->axis.x;  in fcylinder_bbox()
183     maxtmp.y = c->ctr.y + c->axis.y;  in fcylinder_bbox()
184     maxtmp.z = c->ctr.z + c->axis.z;  in fcylinder_bbox()
189     min->x -= c->rad;  in fcylinder_bbox()
190     min->y -= c->rad;  in fcylinder_bbox()
191     min->z -= c->rad;  in fcylinder_bbox()
196     max->x += c->rad;  in fcylinder_bbox()
197     max->y += c->rad;  in fcylinder_bbox()
198     max->z += c->rad;  in fcylinder_bbox()