void
echoCylinderSet(echoObject *cylind,
int axis) {
if (cylind && echoTypeCylinder == cylind->type) {
CYLINDER(cylind)->axis = axis;
}
return;
}
t_intersectInfo *cylinder_intersection(t_cylinder *cylinder, t_ray r)
{
t_intersectInfo *i;
t_vector nray_origin;
t_vector nray_direction;
t_cylinder ncylinder;
t_ray nray;
if (!(i = (t_intersectInfo *)malloc(sizeof(t_intersectInfo))))
return (NULL);
nray_origin = SUB(r.origin,
mult(cylinder->direction, DOT_PROD(r.origin, cylinder->direction)));
nray_direction = SUB(r.direction, mult(cylinder->direction,
DOT_PROD(r.direction, cylinder->direction)));
ncylinder = CYLINDER(SUB(cylinder->origin,
mult(cylinder->direction,
DOT_PROD(cylinder->origin, cylinder->direction))),
cylinder->direction, cylinder->radius, cylinder->color);
nray = RAY(nray_origin, nray_direction);
if (!(project_2d_cylinder(&(ncylinder), nray, i)))
return (NULL);
return (end_int(cylinder, r, i));
}
