72 object *newcylinder(void *tex, vector ctr, vector axis, flt rad) {  in newcylinder()  argument
81     c->axis = axis;  in newcylinder()
98     VCross(&ry->d, &cyl->axis, &n);  in cylinder_intersect()
104         VDOT(d, rc, cyl->axis);  in cylinder_intersect()
105         D.x = rc.x - d * cyl->axis.x;  in cylinder_intersect()
106         D.y = rc.y - d * cyl->axis.y;  in cylinder_intersect()
107         D.z = rc.z - d * cyl->axis.z;  in cylinder_intersect()
120         VCross(&rc, &cyl->axis, &O);  in cylinder_intersect()
123         VCross(&n, &cyl->axis, &O);  in cylinder_intersect()
140     c = cyl->axis;  in cylinder_normal()
160 object *newfcylinder(void *tex, vector ctr, vector axis, flt rad) {  in newfcylinder()  argument
169     c->axis = axis;  in newfcylinder()
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()
211     VCross(&ry->d, &cyl->axis, &n);  in fcylinder_intersect()
225         VCross(&rc, &cyl->axis, &O);  in fcylinder_intersect()
228         VCross(&n, &cyl->axis, &O);  in fcylinder_intersect()
236         ctmp4 = cyl->axis;  in fcylinder_intersect()
244         VDOT(tmp3, cyl->axis, cyl->axis);  in fcylinder_intersect()
257         VDOT(tmp3, cyl->axis, cyl->axis);  in fcylinder_intersect()